https://wiki.k2patel.in/ 2026-04-12T05:53:34+00:00 https://wiki.k2patel.in/ https://wiki.k2patel.in/lib/exe/fetch.php?media=wiki:dokuwiki.svg text/html 2020-08-10T02:35:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=add_ssh_key_to_multiple_host&rev=1597026936&do=diff SSH Key adding - Assuming you already have key setup for your machine. #!/bin/bash hostlist=( 'alpha.lan' 'beta.lan' 'gamma.lan' 'delta.lan' 'epsilon.lan' ) # get number of elements in the array chost=${#hostlist[@]} for (( i=0;i<$chost;i++)); do echo ${hostlist[${i}]} file=`cat /dev/urandom|od -N4 -An -i` scp ${hostlist[${i}]}:.ssh/authorized_keys /tmp/$file if cat /tmp/$file | grep "`cat mike.pub`" then echo "Key already exists" rm -rf /tmp/$file else cat mike.pub >> /tm… text/html 2020-08-10T02:35:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=apache_1.3.x_mod_gzip_sample_config&rev=1597026936&do=diff Apache 1.3.x + mod_gzip + sample config Installation It is easy to install but make sure your apache version is up2date just to avoid any errors. First Need to build mod_gzip. cd /usr/ports/www/mod_gzip perl -pi -e Makefile 's/APXS=${APXS}/APXS=\/www\/apache\/bin\/apxs/g' make make install clean text/html 2020-08-10T02:35:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=apache_2.2_httpready_filter_issue&rev=1597026936&do=diff Apache 2.x 'httpready' No such file or directory:Failed to enable the ‘httpready’ Accept Filter Above error appear when accf_http_load set to “NO” To fix the error you can run following. kldload accf_http And setup to load during next boot use edit file loader.conf. text/html 2020-08-10T02:35:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=apache&rev=1597026936&do=diff Apache Related Quick Help * DDOS Prevention module * HTTP Error Codes * Jboss Load Balancing Compile apache from source Good known required configuration ./configure --prefix=/srv/www --enable-access --enable-autoindex --enable-env --enable-info --enable-mime --enable-proxy --enable-status --enable-usertrack --enable-actions --enable-imap --enable-log_agent --enable-rewrite --enable-alias --enable-auth --enable-cgi --enable-dir --enable-include --enable-log_config --enable-mime_m… text/html 2020-08-10T02:35:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=apache2_php_.la_is_not_a_dso_file&rev=1597026936&do=diff DSO Issue This is a issuse with apache when you try to install any module to it it gives error. e.g. If you are running the php install as module ./configure ----- OK make ------ OK But, make install ---- Failed with message .la is not a dso file ./libtool --mode=install cp libphp5.la /usr/lib/apache/modules/ ./libtool --finish Now, you might need the non apache version of application. in that case you need to get rid of APXS2 variable from configure. text/html 2020-08-10T02:35:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=arch&rev=1597026936&do=diff Arch Linux Recently started using arch linux, seems like really cool distro. Package Manager it uses “pacman” as package manager. Following is some use full commands. pacman queries the local package database with the -Q flag. $ pacman -Q --help text/html 2020-08-10T02:35:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=at&rev=1597026936&do=diff at (linux) In Unix-like computer operating systems, the at command is used to schedule commands to be executed once, at a particular time in the future. More precisely, it reads a series of commands from standard input and collects them into one text/html 2020-08-10T02:35:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=augeas&rev=1597026936&do=diff Augeas this is nice tool to modify / edit file using script or puppet. Here are the few command line reference || example. Using with Puppet Inbuilt lenses. augeas { "sudoers": lens => "Sudoers.lns", incl => "/foo/sudoers", changes => "...", } text/html 2020-08-10T02:35:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=autoconf-2.62_-_build_error&rev=1597026936&do=diff autoconf-2.62 build error Following error i got during the build of autoconf-2.62 restore=: && backupdir=".am$$" && \ am__cwd=`pwd` && cd . && \ rm -rf $backupdir && mkdir $backupdir && \ if (/bin/sh /usr/ports/devel/autoconf262/work/autoconf-2.62/build-aux/missing --run makeinfo --version) >/dev/null 2>&1; then \ for f in autoconf-2.62.info autoconf-2.62.info-[0-9] autoconf-2.62.info-[0-9][0-9] autoconf-2.62.i[0-9] autoconf-2.62.i[0-9][0-9]; do \ if test -f $f; then mv $f $backupdir; restore… text/html 2020-08-10T02:35:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=aws_how_to&rev=1597026936&do=diff Amazon Cloud How to These are the commands i have used during my course of action. Sending Regular SSL / Key / Bundle to ELB Forget what they say and print on form. Format require - * Key - RSA * CRT - x509 * CA Bundle - What ever supplied. text/html 2020-08-10T02:35:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=aws_scripts&rev=1597026936&do=diff Scripts I Use to Manage EC2 / AWS * Snapshot Backup text/html 2020-08-10T02:35:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=awstats&rev=1597026937&do=diff Awstats Installing Linux Modify apache httpd.conf ------------------------ export i=/www/apache/conf/httpd.conf ####################### Check following exists ####################### <Directory "/var/www/awstats/"> AuthGroupFile /dev/null AuthUserFile /usr/www/virtual/.htpasswd AuthType Basic AuthName "Site Statistics" <Limit GET POST> require valid-user </Limit> </Directory> Alias /icons/ "/www/apache/icons/" Alias /cpeditor /www/apache/editor Alias /awstatsclasses "/… text/html 2020-08-10T02:35:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=bad_bot_list&rev=1597026937&do=diff Bad bot This is something keep busy system administrator for few days questioning. I have found no 100% list of bad bot online as it require to keep updated. Here is my version, will try to update but can not guarantee. Place below in the root of your server. text/html 2020-08-10T02:35:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=bash_functions&rev=1597026937&do=diff Bash Functions index # Print the position of $2 in $1 index() #@ Print the position of $2 in $1 { #@ USAGE: index STRING SUBSTRING local idx case $1 in *$2*) idx=${1%%$2*} echo $(( ${#idx} + 1 )) ;; *) echo 0 ;; esac } From Article die # Exit with error code and optional message text/html 2020-08-10T02:35:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=bash&rev=1597026937&do=diff Bash * Floating Point Calculation Bash Short-Cut CTRL Key Bound Ctrl + a - Jump to the start of the line Ctrl + b - Move back a char Ctrl + c - Terminate the command Ctrl + d - Delete from under the cursor Ctrl + e - Jump to the end of the line Ctrl + f - Move forward a char Ctrl + k - Delete to EOL Ctrl + l - Clear the screen Ctrl + r - Search the history backwards Ctrl + R - Search the history backwards with multi occurrence Ctrl + u - Delete from the cursor to the beginning of the line… text/html 2020-08-10T02:35:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=bc_calculator&rev=1597026937&do=diff bc Few Samples to understand usage How it looks.. desk:~/# bc 2048 * 3 6144 256 * 6 1536 quit Simple calculation echo "56.8 + 77.7" | bc Calculation with floating point echo 2/5 | bc -l bc -l works, but it sets scale=20 which gives: 1/3 .33333333333333333333 most of the time I just want two decimal places. there may be an easier way, but what works for me is the following: in .bashrc in your home directory add BC_ENV_ARGS=~/.bc export BC_ENV_ARGS then create .bc also in your hom… text/html 2020-08-10T02:35:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=bind&rev=1597026937&do=diff bind bind is used for DNS. This instruction on how to install it on CentOS chrooted. yum install bind bind-chroot bind-libs bind-utils caching-nameserver text/html 2020-08-10T02:35:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=bitchx&rev=1597026937&do=diff BitchX (IRC Client) * BitchX referance * BitchX Command List Search the conversation for some word /last <word> Windows on BitchX It is possible using BitchX to create another “invisible window” and switch between the two simultaneously. to do this type [#bash] /win new hide text/html 2020-08-10T02:35:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=bruteforce_prevention&rev=1597026937&do=diff How to prevent Bruteforce Install Bruteblock cd /usr/ports/security/bruteblock; make && make install Configure Bruteblock vi /usr/local/etc/bruteblock/ssh.conf Add line similar to following example according to your log in auth.log also you can use line below for commercial SSH text/html 2020-08-10T02:35:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=building_mariadb_on_freebsd&rev=1597026937&do=diff Build / Compile MariaDB on FreeBSD Getting Source get source from MariaDB extract to /usr/local/src/mariadb Configure Modular configure (usually you need to load plugins with my.cnf) i am using this one. ./configure --with-extra-charsets=all --localstatedir=/var/db/mysql text/html 2020-08-10T02:35:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=cablevision&rev=1597026937&do=diff Cablevision Do not call Here are the numbers to dial to stop Cablevision from calling and mailing you for their products. Do Not Call - 1-888-425-2088 ( Do not call for sales related Information ) Do Not Mail - 1-888-425-2090 ( Do not Mail for sales related Information ) Do Not Disclose - 1-888-425-2089 ( Do not Provide My Information to 3rd Party ) text/html 2020-08-10T02:35:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=can_not_mount_boot_larger_hdd_to_freebsd&rev=1597026937&do=diff Can not mount off the Large disk This might be resolved by disabling the udma. if you say that BIOSes provide switching between PIO0 to PIO4. but there is no way to control UDMA in a BIOS. Because every Operating System (without DOS) is taking control after the bootstrap over the hardware and even FreeBSD. text/html 2020-08-10T02:35:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=centos_nginx_backuppc4.x&rev=1597026937&do=diff CentOS / RHEL7 / Fedora + Nginx + Backuppc This combination gave me no documentation online, Recently Backuppc is available as SCGI Script version. I did not had luck setting that up, as nginx lack documentation for scgi. So let's get started, If you are here you might already know there is no packaged version of Backuppc 4.x available. I've decided to take shortcut and repackaged latest version available from fedora 27. text/html 2020-08-10T02:35:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=change_default_mta&rev=1597026937&do=diff Changing MTA During Changing MTA on centos / redhat i had issue getting terminal UI. which is specified and documented here Changing Default MTA. But there is alternate way to do so. alternatives --config mta Usually when you move from sendmail to postfix you should be using text/html 2020-08-10T02:35:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=check_service_and_restart_if_failed&rev=1597026939&do=diff Check service and restart if failed Check the service if nginx is running and if not start #!/usr/bin/env bash # Enable System level logging # Redirect log to logger exec 1> >(logger -t $(basename $0)) 2>&1 STATUS="$(systemctl is-active nginx.service)" if [ "${STATUS}" != "active" ]; then echo "Not running starting Service : Nginx" systemctl start nginx.service fi text/html 2020-08-10T02:35:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=chrome&rev=1597026937&do=diff Chrome Project Google chromium Special @ Pages * about:memory * about:stats * about:network * about:internets * about:histograms * about:dns * about:cache * about:crash * about:plugins * about:version text/html 2020-08-10T02:35:37+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=college&rev=1597026937&do=diff College AdventureWorks2016CTP3 (suspect) During my course after importing database every time my laptop goes to sleep. So following set of command restore the working database. EXEC sp_resetstatus AdventureWorks2016CTP3; ALTER DATABASE AdventureWorks2016CTP3 SET EMERGENCY; DBCC checkdb(AdventureWorks2016CTP3); ALTER DATABASE AdventureWorks2016CTP3 SET SINGLE_USER WITH ROLLBACK IMMEDIATE; DBCC CheckDB (AdventureWorks2016CTP3, REPAIR_ALLOW_DATA_LOSS); ALTER DATABASE AdventureWorks2016CTP3 SET … text/html 2021-08-24T21:11:04+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=command_line&rev=1629839464&do=diff KVM Command Line “virsh” shell for KVM. List All Domain on KVM virsh list --all Define or use .xml virsh define <xyz.xml> Start KVM virsh start <xyz> Edit Guest .xml virsh edit xyz List VNC Information virsh vncdisplay xyz Domain Format in KVM text/html 2020-08-10T02:35:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=course_length&rev=1597026938&do=diff #!/usr/bin/env python3 from dateutil import rrule import sys, getopt import datetime #start_date = datetime.datetime.strptime('5/20/2019', '%m/%d/%Y') #end_date = datetime.datetime.strptime('7/14/2019', '%m/%d/%Y') def main(argv): start_date = '' end_date = '' try: opts, args = getopt.getopt(argv,"hs:e:",["sdate=","edate="]) except getopt.GetoptError: print ('datecalc -s <start_date> -e <end_date>') sys.exit(2) for opt, arg in opts: if opt == '-h': … text/html 2020-08-10T02:35:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=cpan2rpm&rev=1597026938&do=diff CPAN2RPM Most usefull tool to create rpm from the cpan module. Source is locate at “<http://search.cpan.org/CPAN/authors/id/E/EC/ECALDER/cpan2rpm-2.028.tar.gz>” <note warning>Due to bug you have to modify the command to use PlainText instead of Text.</note> perl -pi -e 's/Pod::Text/Pod::PlainText/' /usr/bin/cpan2rpm text/html 2020-08-10T02:35:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=cron&rev=1597026938&do=diff CRON It is most important piece of command / daemon available on Linux / Unix system. It has some nice capability which is not used but need to be aware of. Special Usage Following Special words replaces common conventional usage @reboot #Run once, at startup. @yearly #Run once a year, "0 0 1 1 *". @annually #(same as @yearly) @monthly #Run once a month, "0 0 1 * *". @weekly #Run once a week, "0 0 * * 0". @daily #Run once a day, "0 0 * * *". @midnigh… text/html 2021-09-21T16:13:19+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=daily_admin_issues&rev=1632240799&do=diff Daily Admin Issue * sar reporting * Kernel Tuning * inotify monitor * Security Centos 6 to 7 Upgrade I've followed <https://wiki.centos.org/TipsAndTricks/CentOSUpgradeTool> without issue. But after reboot i've started seeing following error “libpcre.so.0” not found. After looking further it appeared to the issue with “grep” package. After Successful reboot simply downgrade the grep package and error will disappear. text/html 2020-08-10T02:35:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=daily_issues&rev=1597026938&do=diff Mysql Upgrade Issue Easy Command List How to check Type of Table You can use any of the following command to determine table type. SHOW TABLE STATUS WHERE Name = 'table_name'; OR SHOW CREATE TABLE 'table_name'; OR SHOW TABLE STATUS; Mysql Generate hash for password text/html 2020-08-10T02:35:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=daily_regular_expression&rev=1597026938&do=diff Daily Regular Expresssion Grab IP egrep '([[:digit:]]{1,3}\.){3}[[:digit:]]{1,3}' grep '^[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}$' cat textfile | grep -o '[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}\.[0-9]\{1,3\}' /sbin/ifconfig | grep "inet addr" | awk -F : '{print $2}' | awk '{print $1}' | grep -v -e '^192.\|^127.\|^10.' text/html 2021-08-25T22:35:22+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=default_kernel&rev=1629930922&do=diff Default Kernel List all available kernel sudo awk -F\' '/menuentry / {print $2}' /boot/grub2/grub.cfg :!: Check if all the kernels listed in order and properly set the version (latest on top) if not generate config again. Re-Generate config grub2-mkconfig -o /boot/grub2/grub.cfg text/html 2020-11-24T21:06:16+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=dell&rev=1606251976&do=diff Dell OMSA Installation wget -q -O - http://linux.dell.com/repo/hardware/latest/bootstrap.cgi | bash yum install srvadmin-all /opt/dell/srvadmin/sbin/srvadmin-services.sh {start|stop} # When to start / stop OSMA ssl certificate regenerate /opt/dell/srvadmin/sbin/srvadmin-services.sh stop cd /opt/dell/srvadmin/lib64/openmanage/jre/bin ./keytool -genkey --dname "CN=server.k2patel.in, ou=Dell, O=Dell, c=US" -alias dellcert --storepass Dell123 -validity 900 -keyalg RSA -keysize 4096 -sigalg SH… text/html 2020-08-10T02:35:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=deploy_script_using_case&rev=1597026938&do=diff Deploy Script Using Case This script is meant to be used for varnish, but can be adapted for anything. #!/bin/bash ## deploy-varnish.sh ## deploy default.vcl and/or reload varnish daemon on all hosts if [ $# -lt 1 ] then echo "Usage : $0 {deploy|deployall|reload|reloadall}" exit 1 fi case "$1" in deploy) while read -r host do cat conf/default.vcl | ssh $host 'sudo /bin/sh -c "cat > /etc/varnish/default.vcl"' done < <(head -n1 hosts) echo "deployed config… text/html 2020-08-10T02:35:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=dev_cache_all&rev=1597026938&do=diff Catch ALL for testing During development you need scenario when all email should goes to only one email. which is most important requirement for developer as they want to test email as well they need confirmation. Here is what i have applied on postfix. text/html 2020-08-10T02:35:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=dig&rev=1597026938&do=diff dig How to use dig to find Glue record in order to find glue record you need two command one find the authority of TLD. $ dig NS in. ......<RESULT>..... ; <<>> DiG 9.9.2-P2 <<>> NS in. ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 17728 ;; flags: qr rd ra ad; QUERY: 1, ANSWER: 8, AUTHORITY: 0, ADDITIONAL: 1 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags:; udp: 512 ;; QUESTION SECTION: ;in. IN NS ;; ANSWER SECTION: in. 21599 IN NS a0.in.af… text/html 2020-08-10T02:35:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=dns_add_script&rev=1597026938&do=diff #!/usr/bin/perl -w ##Jason Thomas ##Last Modified 20090819 use strict; use lib '/home/jthomas/lib/perl5/site_perl/5.8.8/'; use File::Copy; use IO::File; use Text::Template; use File::Grep qw( fgrep ); ##my $repository = "/home/jthomas/projects/qsp_dns_migration/qsp.us.zone/"; my $repository = "/home/jthomas/projects/dns/master/"; my $dnsData = "data"; ##currently designed to read from file. however if fqdn is not before fqhn, it will not be able write ##the entry until db.fqdn is created o… text/html 2020-08-10T02:35:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=docker&rev=1597026938&do=diff Docker Attach / Dettach docker attach <id|name> Prevent termination while <Ctrl> + C in term by changing sig proxy it can be prevented. docker attach --sig-proxy=false <id|name> Host Firewall Setting up firewall port forwarding and exposing service to world or specific IP. text/html 2021-01-25T23:41:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=elasticsearch&rev=1611618060&do=diff Elasticsearch Quick Commands Check Cluster Health curl -XGET 'http://localhost:9200/_cluster/health?pretty=true' List all Indexes curl http://localhost:9200/_cat/indices?v List all shards curl -XGET 'http://localhost:9200/_cat/shards' Unassigned shard | timeout text/html 2020-08-10T02:35:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=enable_ipv6_tunnel&rev=1597026938&do=diff ifconfig gif0 create ifconfig gif0 tunnel <local_ip> <IPv4_gateway> ifconfig gif0 inet6 <IPv6_IP> <IPv6_gateway> prefixlen 128 route -n add -inet6 default <IPc6_gateway_ip> ifconfig gif0 up text/html 2020-08-10T02:35:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=error_codes&rev=1597026938&do=diff HTTP Error / Response Codes Copy Pasted from here 1xx Info / Informational HTTP_INFO - Request received, continuing process. Indicates a provisional response, consisting only of the Status-Line and optional headers, and is terminated by an empty line. 100 Continue - HTTP_CONTINUE 101 Switching Protocols - HTTP_SWITCHING_PROTOCOLS 102 Processing - HTTP_PROCESSING text/html 2020-08-10T02:35:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=error_on_m4_update_install&rev=1597026938&do=diff m4 update / install error Following Error when i tried to install m4. Making all in doc Updating ./version.texi restore=: && backupdir=".am$$" && am__cwd=`pwd` && CDPATH="${ZSH_VERSION+.}:" && cd . && rm -rf $backupdir && mkdir $backupdir && if (makeinfo --no-split --version) >/dev/null 2>&1; then for f in ./m4.info ./m4.info-[0-9] ./m4.info-[0-9][0-9] ./m4.i[0-9] ./m4.i[0-9][0-9]; do if test -f $f; then mv $f $backupdir; restore=mv; else :; fi; done; else :; fi && cd "$am__cwd"; if m… text/html 2020-08-10T02:35:38+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=errors&rev=1597026938&do=diff Postfix Limit on File size Limit on message file size create following error. Feb 19 05:30:27 mail1 postfix/postdrop[14814]: warning: uid=539: Illegal seek Feb 19 05:30:27 mail1 postfix/sendmail[14813]: fatal: ketan(539): queue file write error text/html 2020-08-10T02:35:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=esmf-_ubuntu_18.04&rev=1597026939&do=diff ESMF Ubuntu 18.04 # installing ESMF on Ubuntu Linux # pre-req : gfortran, netcdf, openmpi, python3 # first mkdir /opt/esmf/7.1.0r and chown to yourself # you also need a copy of esmf v7.1.0r # https://sourceforge.net/code-snapshots/git/e/es/esmf/esmf.git/esmf-esmf-e3ac95b2e25a36d6cbfa68ed93eb1645fea29fcd.zip # unzip esmf-esmf-e3ac95b2e25a36d6cbfa68ed93eb1645fea29fcd.zip # mv esmf-esmf-e3ac95b2e25a36d6cbfa68ed93eb1645fea29fcd /opt/esmf-7.1.0r # Raphael Dussin, July 2016 # Some part modified k2p… text/html 2020-08-10T02:35:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=execution_time_and_notify&rev=1597026939&do=diff Check execution time and notify if exceed One Liner s=`date +%s`; /usr/local/bin/php index.php ; e=`date +%s`; if [ $(( $e - $s )) -gt 10 ]; then /usr/bin/mail -s "[Notice] `hostname` Time is More then 10 second" status@k2.com ; fi Script #!/bin/bash # Monitor execution of process export receipients="status@k2.com" output=".BxJ04o1k2lcTURK" notify(){ for n in $receipients; do echo $1 | /usr/bin/mail -s "[Notice] `hostname` Time is More then 10 second" $n done } cd /usr/www… text/html 2020-08-10T02:35:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=fail2ban&rev=1597026939&do=diff Fail2Ban Nice - Lightweight - Protection to linux box You can do more than expected with this utility. Here i am using SSH and FTP setting to protect my bandwidth from script kidies. Installation Fail2ban is written in Python, thus no compilation is required. You can even run Fail2ban without installing it. text/html 2020-11-19T15:55:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=fedora_redhat_centos&rev=1605801345&do=diff Fedora, Redhat & CentOS * CentOS + Nginx + Backuppc4.x * Default kernel My Repo I did not yet implemented GPG Key. [K2 - Perl] name=K2 - Perl baseurl=http://rpm.k2patel.in:1111/centos/$releasever/perl/$basearch/ enabled=1 gpgcheck=0 [K2 - Update] name=K2 - Update baseurl=http://rpm.k2patel.in:1111/centos/$releasever/updates/$basearch/ enabled=1 gpgcheck=0 text/html 2020-08-10T02:35:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=finch&rev=1597026939&do=diff Finch (Best command line communicator) Frequently Used Shortcuts * Alt + q - quit * Alt + c - close window * Alt + n - next window * Alt + p - previous window * Alt + a - View available actions * Alt + w - list of windows * Alt + m - move window text/html 2020-08-10T02:35:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=find_files_which_is_taking_most_space_on_server&rev=1597026939&do=diff Which file taking Space on Windows There is many utility available to check this. * SequoiaView * WinDirStat text/html 2020-08-10T02:35:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=find&rev=1597026939&do=diff Find To find all files that was modified since a specific time ago (i.e an hour ago, a day ago, 24 hours ago, a weeks ago and so on) in Unix environment, the find command will come in handy. The command syntax is: To find all files modified in the last 24 hours (last full day) in current directory and its sub-directories: text/html 2020-08-10T02:35:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=firewalld&rev=1597026932&do=diff Firewalld Another package to manage another package... welcome to new world ... :D Anyway but server need to keep rolling !! Replace firewalld with iptables This is tested with the RHEL7 yum install -y iptables-services iptables-save > /etc/sysconfig/iptables # preserve existing rule systemctl stop firewalld systemctl mask firewalld systemctl enable iptables systemctl enable ip6tables systemctl start iptables systemctl start ip6tables text/html 2020-08-10T02:35:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=floating_point_calculation&rev=1597026932&do=diff Floating Point Calculation This is an example represent how to compute Floating point in bash. Using in Script for Comparision To use bc in our bash scripts we'll package it up into a couple of functions: float_eval EXPRESSION and float_cond CONDITIONAL-EXPRESSION text/html 2020-08-10T02:35:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=force_make_to_use_gcc44&rev=1597026932&do=diff FreeBSD make.conf How to force to use latest gcc4x It is usually require to done while building ffmpeg on freebsd. Some script require it will be build using gcc44 so it does not complaint. add following lines to start using gcc44. replace number 44 with desired version. should do it. text/html 2020-08-10T02:35:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=freebsd_nginx_backuppc&rev=1597026932&do=diff freebsd + nginx + backuppc My current installation is inside JAIL, inside freenas. Not going to discuss on setting up jail etc., this topic mainly focused on quick installation once your JAIL is setup. Note: For Linux RHEL Based installation look ( text/html 2020-08-10T02:35:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=freebsd_zfs_daily&rev=1597026932&do=diff Freebsd and Zfs commands New drive using lable Recently i had to add new drive but it doesn't had any glable. Since drives are same size best bet is to use same partition size for new drive. Using gpart backup / restore one add new partition on new disk and good to go for zfs. text/html 2020-10-30T17:11:17+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=freenas&rev=1604077877&do=diff FreeNAS Memory leak 1G in system processes for python3.6 :!: This is fixed in latest stable. pkill -9 -f middlewared (WAIT about 10 seconds) service middlewared start You can do this live while in production. This will only restart the middleware process that effects the WebUI. text/html 2020-08-10T02:35:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=ftp_file_fetch_using_perl&rev=1597026932&do=diff FTP file fetch using perl #!/usr/bin/perl # this script is written by ketan patel use Net::FTP; $file = "name of file"; @paths = ('comma_separated path file'); $remotehost = "<remote_hostname>"; $user = "<ftp_username>"; $pass = "<ftp_password>"; chdir "/srv/www/htdocs/passwd"; $k2=1; print "Connecting...\n"; $ftp = Net::FTP->new("$remotehost", Debug => 0) or die "cannot connect:"; print "Logging in...\n"; $ftp->login("$user","$pass") or… text/html 2020-08-10T02:35:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=furnished_bckup_mysql&rev=1597026932&do=diff Furnished Bckup #!/bin/bash ######################################################################### # Backup Database # You can call this script from cron. # if you have any issue write back to me # k2patel@live.com !!! ;) it is microsoft ? yeah dont junk me junk them ######################################################################### mysqldump=$(which mysqldump) mysql=$(which mysql) gzip=$(which gzip) chown=$(which chown) DATE=$(date +%Y%m%d) # Which user suppose to own this file #… text/html 2020-08-10T02:35:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=gem&rev=1597026932&do=diff GEM gem of ruby. tips and tricks i have used. Gem Local Installation In many case i usually dont want to install GEM globally. I simply update my .gemrc file with following value. <note important>If it does not work try with hardcoded path instead $HOME</note> text/html 2020-08-10T02:35:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=general_help&rev=1597026932&do=diff General Help How to mount procfs To mount procfs you need to do following. mount -t procfs proc /proc It is necessary to run command like truss on dump(core) file. Network Status Graph To check network status nload -u m <interface> Statistics of the System text/html 2020-08-10T02:35:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=general_postfix&rev=1597026932&do=diff General Postfix Removing all mail from queue postsuper -d ALL Read mail in queue postcat -vq <queue_id> text/html 2020-08-10T02:35:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=generate_good_password&rev=1597026932&do=diff Generate good password how simple it is echo `< /dev/urandom tr -dc A-Za-z0-9 | head -c 10` Read further for complicated edition. Usage : apg.sh 10 (generate 10 character password) #!/bin/bash if [ $# -lt 1 ]; then echo "Usage : apg <lenght of password>" else for ((n=0;n<10;n++)); do dd if=/dev/urandom count=1 2> /dev/null | /usr/bin/gmime-uuencode -m -| sed -ne 2p | cut -c-$1; done fi text/html 2020-08-10T02:35:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=gentoo&rev=1597026933&do=diff Gentoo For me Best source to learn how everything works. General Issues Packages text/html 2020-08-10T02:35:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=geo_ip&rev=1597026933&do=diff Geo IP Help Page mod_geoip Installation Get c library from maxmind.com compile it and install it. downlaod c library from download geoip database save geoip database at - /srv/www/htdocs/.geoip/GeoIP.dat Get mod_GeoIP from maxmid.com install it using following command /srv/www/bin/apxs -i -a -L /usr/local/lib -I /usr/local/include -lGeoIP -c mod_geoip.c text/html 2020-08-10T02:35:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=git&rev=1597026933&do=diff GIT Repository Setting up GIT Create Server Define User git config --global user.name "k2patel" git config --global user.email "k2patel@live.com" Create location for Repository <note tip>replace location with your desired location</note> mkdir -p /data/git/bumper.git cd /data/git/bumper.git text/html 2020-08-10T02:35:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=globus&rev=1597026933&do=diff Globus Most unstable but highly useful gridftp service. Configuration and documents are scattered all around so it is really easy to troubleshoot your self. Fixing broken proxy Not sure but suddenly proxy is not setting up paths correctly. one thing i found is to do following steps manually. text/html 2020-08-10T02:35:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=guake&rev=1597026933&do=diff Guake terminal NOTE : Read further if you have GNOME or GTK+ Guake is a top-down terminal for Gnome (in the style of Yakuake for KDE, Tilda or the terminal used in Quake). It is dam fast and more nice than tilda. Guake Home Enjoy!! text/html 2020-08-10T02:35:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=gui&rev=1597026933&do=diff teset text/html 2020-08-10T02:35:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=help&rev=1597026933&do=diff Some easy notes Supported codes in docuwiki The following language strings are currently recognized: abap, actionscript-french, actionscript, actionscript3, ada, apache, applescript, asm, asp, autoit, bash, basic4gl, blitzbasic, bnf, boo, c, c_mac, caddcl, cadlisp, cfdg, cfm, cil, cobol, cpp, cpp-qt, csharp, css, delphi, diff, div, dos, dot, d, eiffel, fortran, freebasic, genero, glsl, gml, gnuplot, groovy, gettext, haskell, html, idl, ini, inno, io, java5, java, javascript, kixtart, klon… text/html 2020-08-10T02:35:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=how_to_mount_ntfs_with_read_write&rev=1597026933&do=diff NTFS Mount on BSD Requirement Following package need to be installed. - /usr/ports/sysutils/fusefs-ntfs - ntfs-3g - which is installed as part of fusefs-ntfs. Enable fuse Edit /etc/rc.conf and add following line. fusefs_enable="YES" Now start fuse before mounting NTFS text/html 2020-08-10T02:35:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=how_to_remove_script_from_all_pages&rev=1597026933&do=diff How to remove script from all pages Xargs can be wack sometimes, you can use -exec in find to do the same thing as xargs: find . -name '*.php' -o -name '*.htm*' -exec grep iframe {} \+ | cut -d ':' -f1 #this should be run in the root directory that needs to be cleaned #!/bin/sh TODAY=$(/bin/date +%m%d%y) for i in $(find . \( -name '*.php' -o -name '*.htm*' \) -exec grep -i '<script>' {} \+ | cut -d ':' -f1 ); do if [ -e $i ]; then if [ -e $TODAY.backup.tar ]; then TFLAG="r… text/html 2020-08-10T02:35:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=how_to&rev=1597026933&do=diff How to ..... .gvfs How to get rid of .gvfs and what it is. What it is GVFS is a replacement for GnomeVFS, the GNOME Virtual File System {User_home}/.gvfs is used as a mount point for the Gnome gvfs for user. It stays mounted even when user is logged off.You need to umount it prior to delete it. Use following command to unmount text/html 2020-08-10T02:35:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=indian&rev=1597026933&do=diff Dhansak INGREDIENTS: * Tovar washed 100gm * cup Red Gram (split) * Masoor dal washed 75 gm * Ghee 30 gm * Chopped onion 150 gm * Ginger garlic paste 2tbsp * Red pumpkin peeled & diced 100gm * Brinjal peeled & diced 100 gm * Potatoes diced 100 gm text/html 2020-08-10T02:35:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=info&rev=1597026933&do=diff File System Performance File System Scheduler State Of Process d : uninterruptible sleep (usually io) r : running or runnable (on run queue) s : interruptible sleep (waiting for an event to complete) t : stopped, either by a job control signal or because it is being traced. w : paging (not valid since the 2.6.xx kernel) x : dead (should never be seen) z : defunct ("zombie") process, terminated but not reaped by its parent. text/html 2020-08-10T02:35:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=inittab&rev=1597026933&do=diff INITTab Actions Available in inittab respawn Restart the process whenever it terminates. Usually used for getty processes, which monitor for logins. wait Start the process once when the specified runlevel is entered and wait for its termination before init proceeds. once Start the process once when the specified runlevel is entered. initdefault Specifies the runlevel to enter after system boot. ctrlaltdel Execute the associated process when init receives the SIGINT signal, for example, when s… text/html 2020-08-10T02:35:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=innobackupx_scripted_to_backup_daily&rev=1597026933&do=diff InnoBackupX * This is great tool for hot online backup. * Following script is used to backup mysql to remote server with key less entry only. * Following script need you to change some variables. Master server #!/bin/bash if /usr/bin/innobackupex-1.5.1 --no-timestamp --no-lock --user=root --password=testpassword --stream=tar ./ | ssh root@remote.backup.com "cat - > /root/bkuptest/Backup/test.tar" then if ssh root@remote.backup.com "/usr/bin/mybackup.sh" then … text/html 2020-08-10T02:35:33+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=inotify_monitor&rev=1597026933&do=diff Inotify Failed to watch /var/ftp; upper limit on inotify watches reached! Please increase the amount of inotify watches allowed per user via `/proc/sys/fs/inotify/max_user_watches'. limit from 8k to 16000 temporarily and tried again. # /usr/local/kit/inotify/inotify.log (it doesn't exist) so no email is generated. text/html 2020-08-10T02:35:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=install_lighttpd_-_with_mod_h264_streaming&rev=1597026934&do=diff freebsd + lighttpd + mod_h264_streaming Following has been tested on freebsd 7.x This is step by step. First thing need to be done is get the copy of - mod_h264_streaming. NOTE : Cosidering you are in folder - “/usr/local/src” svn export http://h264.code-shop.com/svn/h264/tags/mod_h264_streaming-2.0/lighttpd-1.4.18 mod_h264 svn export --force http://h264.code-shop.com/svn/h264/tags/mod_h264_streaming-2.0/mp4split mod_h264/src text/html 2020-08-10T02:35:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=installing_memcached&rev=1597026934&do=diff Installing Memcached To install memcached on freebsd simply follow steps below. cd /usr/ports/databases/memcached make install clean After installation we need to activate it in rc.conf. memcached_enable="YES" memcached_flags="-m 256 -l 127.0.0.1 -p 11211" memcached_user="xyz" text/html 2020-08-10T02:35:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=ip_alias_script_for_debian&rev=1597026934&do=diff Script to Add multiple IP to Debian This script add all IP in single file as an alias 192.168.1.4 192.168.1.5 192.168.1.7 192.168.1.8 192.168.1.11 10.10.1.34 10.10.1.23 #!/bin/bash i=0; while read ip do /sbin/ifconfig eth0:${i} $ip netmask 255.255.255.240 up let i=$i+1 done < /etc/network/ip_range text/html 2020-08-10T02:35:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=ipfw&rev=1597026934&do=diff IpFw Simple but nice firewall. Good Reading How to create forward for port Rule below forward request to 5111 to port 232 ipfw add fwd localhost,5111 tcp from any to any 232 via en0 Diverting port using snort Rule below will divert the traffic from one port to another.\ text/html 2020-08-10T02:35:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=iptables&rev=1597026934&do=diff IPTABLES Statefull and Powerfull Firewall. Enable for SSH Bruteforce Prevention This is not a 100% proof setup as it does not block based on the result of authentication. It just work based on connection. Simple Rules iptables -N BRTBLK iptables -A INPUT -p tcp --dport 22 -m state --state NEW -j BRTBLK iptables -A BRTBLK -m recent --set --name SSH iptables -A BRTBLK -m recent --update --seconds 45 --hitcount 5 --name SSH -j DROP text/html 2020-08-10T02:35:39+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=ipxe&rev=1597026939&do=diff iPXE Get Source Get ipxe source git clone git://git.ipxe.org/ipxe.git Next step create custom script Custom ipxe :!: Simple http server works just fine serving the ipxe.txt and kickstarts, but no HTTPS. #!ipxe echo Welcome to iPXE! :retry_dhcp dhcp || goto retry_dhcp :bootup echo # echo ip ...................... : ${ip} echo # echo Booting from http://plainhttp.k2patel,in/ipxe/ipxe.txt read test chain http://plainhttp.k2patel.in/ipxe/ipxe.txt prompt shell text/html 2020-08-10T02:35:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=irssi&rev=1597026934&do=diff IrSSi Best Command line irc client. Few simple things before you start using. Common IRC commands To register your nick on IRC /msg nickserv register PASSWORD EMAIL To verify your password /msg nickserv identify PASSWORD List Channel /list text/html 2020-08-10T02:35:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=iscsiadm&rev=1597026934&do=diff iscsiadm Logout iscsi target iscsiadm --m node -T iqn.2012-04.com.euallogic:0-9a5602-234as245dg.cluster1 --portal 192.168.82.2:3260 -u Delete iscsi target iscsiadm --m node -o delete -T iqn.2012-04.com.euallogic:0-9a5602-234as245dg.cluster1 --portal 192.168.82.2:3260 text/html 2020-08-10T02:35:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=james&rev=1597026934&do=diff James It's really nice standalone mail server. Written in JAVA, can be scaled to high numbers of nodes. I have used mysql based setup database.driverClassName=com.mysql.jdbc.Driver database.url=jdbc:mysql://localhost/james database.username=james database.password=james vendorAdapter.database=MYSQL openjpa.streaming=false text/html 2020-08-10T02:35:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=kernel_not_found&rev=1597026934&do=diff Booting into loader mode: unload set kernel="kernel.old" boot-conf <http://www.unix.com/bsd/87838-freebsd-kernel-queries-issues.html> text/html 2020-08-10T02:35:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=kernel_tuning&rev=1597026934&do=diff Kernel Tuning This tuning i have used for dedicated DB server. You can use it, as it is on any modern server, but please make sure to read note once. ###### Optimization Dec. 22 2011 ###### ## Reduce Swapping vm.swappiness = 30 vm.dirty_ratio = 50 vm.dirty_background_ratio = 5 text/html 2020-08-10T02:35:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=keytool&rev=1597026934&do=diff Java Keytool Java Keytool Commands for Creating and Importing These commands allow you to generate a new Java Keytool keystore file, create a CSR, and import certificates. Any root or intermediate certificates will need to be imported before importing the primary certificate for your domain. text/html 2020-08-10T02:35:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=kubernetes&rev=1597026934&do=diff Kubernetes Creating user accounts and workspace binding commands kubectl create namespace gitlab-test-k2 kubectl config set-context $(kubectl config current-context) --namespace=gitlab-test-k2 kubectl apply -f gitlab-service-accnt.yaml kubectl describe sa gitlab-k2 -n gitlab-test-k2 kubectl get secret gitlab-k2-token-2nrjl -n gitlab-test-k2 -o "jsonpath={.data.token}" | base64 -D kubectl get secret gitlab-k2-token-2nrjl -n gitlab-test-k2 -o "jsonpath={.data['ca\.crt']}" text/html 2020-08-10T02:35:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=letsencrypt&rev=1597026934&do=diff Letsencrypt | Certbot Now they renamed it from Letsencrypt to Certbot. Working on script to reflect the change but i have to make sure it does not change | Break all required dependencies. Great thing happen securing internet servers, And it's Free. text/html 2020-08-10T02:35:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=lightttpd&rev=1597026934&do=diff lighttpd In order to make it work simply change following options. Enable all needed modules, in this case i am configuring it for streaming. "mod_flv_streaming", "mod_h264_streaming", Specify file extension flv-streaming.extensions = ( ".flv" ) h264-streaming.extensions = ( ".mp4" ) text/html 2020-08-10T02:35:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=limiting_closed_port_rst_response&rev=1597026934&do=diff Limiting closed port RST response FreeBSD’s kernel is that it will limit closed port RST responses, It means someone repeatedly hitting a port that is closed, the kernel stop responding to all of the requests. You generally get something like this in the system log: text/html 2020-08-10T02:35:34+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=ls&rev=1597026934&do=diff ls Surprised seeing LS here, well i am surprised when i have been asked define all classification of file indicated while using -F. here i am after reffering to man page. * = regular files that are executable / = file type indicators for directories @ = for symbolic links | = for FIFOs = = for sockets > = for doors nothing = for regular files. text/html 2020-08-10T02:35:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=lvm&rev=1597026935&do=diff LVM LVM you can increase / decrease size without any issue. But it is important you do it in proper steps. Steps to create LVM from drive pvcreate /dev/xvdf1 pvdisplay /dev/xvdf1 vgcreate -s 16M vg0 /dev/xvdf1 vgdisplay /dev/xvdf vgdisplay vg0 lvcreate -n lv-vol001 vg0 lvcreate --help lvcreate -A n -L 24.5G -n lv-vol001 vg0 mkfs.ext3 /dev/vg0/lv-vol001 text/html 2020-08-10T02:35:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=make_to_ignore_file_hash&rev=1597026935&do=diff Ignore Hash NOT and good idea but you want to do it. use make as follow make _CKSUMFILES="" text/html 2020-08-10T02:35:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=mariadb_replication&rev=1597026935&do=diff MariaDB Replication Coming soon text/html 2020-08-10T02:35:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=mina_ftp&rev=1597026935&do=diff Mina FTP Standalone FTP server written is JAVA. which use MINA Framework, could be use to deploy service in min. Source : Mina FTP Copy following files tar -xvf springsource-tool-suite-2.6.0.RELEASE-e3.6.2-linux-gtk-x86_64.tar.gz cp tc-server-developer-2.1.1.RELEASE/lib/com.springsource.org.apache.commons.cli-1.2.0.jar /opt/ftpd/common/lib/ cd /opt/ftpd/cd /usr/local/src/ wget http://s3.amazonaws.com/dist.springframework.org/milestone/SPR/spring-framework-3.1.0.M1.zip unzip spring-frame… text/html 2020-08-10T02:35:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=mod_evasive&rev=1597026935&do=diff mod_evasive (module to prevent DDOS) Short Brief Source mod_evasive is an evasive maneuvers module for Apache to provide evasive action in the event of an HTTP DoS or DDoS attack or brute force attack. It is also designed to be a detection and network management tool, and can be easily configured to talk to ipchains, firewalls, routers, and etcetera. text/html 2020-08-10T02:35:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=mod_proxy_ajp&rev=1597026935&do=diff mod_proxy_ajp There is no additional modules require to load balance jboss. But we had some old services require it and we down to road for mod_proxy_ajp. alternatively you can choose mod_cluster. Documentation mod_proxy_ajp quick explanation / observation This module does not monitor services. text/html 2020-08-10T02:35:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=monitor_dns_changes_for_hostname&rev=1597026935&do=diff Monitor DNS Changes for Hostname #!/bin/env perl use strict; ## Check to see if IP Address or CNAME has changed for a host ## If it has chagned, send message using mail function require Net::DNS; require MIME::Lite; my %hostname = ( 'cdn.djtunez.net' => [ "ns1.lithiumfox.com", "ns1.lithiumfox.com"], ); for (keys %hostname){ my $record; my $res = Net::DNS::Resolver->new( nameservers => $hostname{$_}, recurse => 0, debug => 0, ); my $request = $res->query("$_"); if ($reques… text/html 2020-08-10T02:35:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=monitor_real_time_website_with_test_case&rev=1597026935&do=diff Monitor Website / WebApp There is many tool available in market to monitor websites. Many of them fail on hard to use or does not serve purpose. This script is simply used to generate test case. Easy to configure / install for system admin. Requirement text/html 2020-08-10T02:35:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=monitor_snmpd_for_cacti&rev=1597026935&do=diff Monitor SNMPD for all cacti host This script will test SNMPD against all host in cacti database. #!/bin/bash # Powered by k2patel :) # please send suggestion to k2patel@hotmail.com ################################################# ### ### ### MySQL Information used on Cacti ### ################################################# sqlu=<mysql_user> sqlp=<mysql_pass> sqld=<mysql_database> ################################################# ### ### ### List of person /… text/html 2020-08-10T02:35:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=monitor_your_ip_and_send_email_if_change&rev=1597026935&do=diff Monitor Local IP Many time it is require to track change in IP. I have wrote this piece to help me track my home IP. #!/usr/bin/env python # -*- coding: utf-8 -*- """ Spyder Editor This temporary script file is located here: /home/k2patel/bin/sendip """ import urllib2 import smtplib # CUSTOMIZATION START # Define your current IP here. currentIP = "71.167.42.203" # Define you email id to notify toaddrs = "k2patel@xyz.com" # Define Source Email ID fromaddr = "k2patel@pqr.com" # CUSTOMIZ… text/html 2020-08-10T02:35:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=monitoring_gateway_ping&rev=1597026935&do=diff Loosing Gateway on freebsd 5.5 I have not seen any solution so far, so following custom scripts will help you. add following line to rc.local. /usr/local/bin/netmonitor create script netmonitor #!/bin/sh . /etc/rc.conf netmonitor(){ while [ 1 ]; do ping -c 5 -t 1 $defaultrouter if [ $? -ne 0 ]; then sh /etc/netstart sh /etc/rc.virtual fi sleep 5 done } netmonitor & text/html 2020-08-10T02:35:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=mplayer_x264_from_latest_snapshot&rev=1597026935&do=diff MPlayer + x264 + FFMpeg from snapshot This is too much time consuming compilation with many faliure. following is the possible best way to succeed at once. Prequisite : gcc44 or gcc43 x264 git clone git://git.videolan.org/x264.git wget -O x264.bsd.patch http://lists.freebsd.org/pipermail/freebsd-multimedia/attachments/20090302/602f1b22/x264.bsd.obj patch -p0 < x264.bsd.patch cd x264 ln -s /usr/local/bin/bash /bin/bash text/html 2020-08-10T02:35:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=mpstat&rev=1597026935&do=diff mpstat This is just snapshot of man page to refer Field description CPU Processor number. The keyword all indicates that statistics are calculated as averages among all processors. %usr Show the percentage of CPU utilization that occurred while executing at the user level (applica‐ tion). %nice Show the percentage of CPU utilization t… text/html 2020-08-10T02:35:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=mysql_backup_daily&rev=1597026935&do=diff Mysql Backup Daily ** This is need to be modified #!/bin/sh TIME_1=`date +%s` cd /backup/mysql DBS="$(mysql --user=youruser --password=yourpass -Bse 'show databases')" for db in ${DBS[@]} do echo ${db}-$(date +%m-%d-%y).sql.bz2 is being saved in /backup/mysql # remember to add the options you need with your backups here. mysqldump --user=youruser --password=yourpass $db --single-transaction -R | bzip2 -c > ${db}-$(date +%m-%d-%y).sql.bz2 done TIME_2=`date +%s` elapsed_time=$(( ( $TIME_2… text/html 2020-08-10T02:35:35+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=mysql_backup_locally&rev=1597026935&do=diff Mysql Backup Locally #!/bin/sh DIR=<backup_directory> PW=<root_password> USER=<owner_of_file> DATE=$(date +%Y%m%d) mysqldump=$(which mysqldump) mysql=$(which mysql) tar=$(which tar) chown=$(which chown) for i in $($mysql -p$PW -e "SHOW DATABASES"|grep -v Database); do $mysqldump -p$PW --allow-keywords $i > $DIR/$i.sql done cd $DIR $tar -cvf $DATE.tar *.sql rm $DIR/*.sql $chown -R $USER $DIR exit 0 text/html 2020-08-10T02:35:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=mysql_cluster_5_min&rev=1597026936&do=diff MySQL cluster 5 Min. From : Kai Voigt You have heard about MySQL Cluster, but you were always afraid to get into it because „Cluster“ seems to be a magic and complicated topic? Then this article is for you. In a couple of minutes, you can run your own Cluster. text/html 2020-08-10T02:35:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=mysql_connection_test_script&rev=1597026936&do=diff Mysql Connection Test script <?php $db_name = Database Name; $db_user = Database User; $db_pass = Database password; $link = mysql_connect('localhost', $db_user, $db_pass); if (!$link) { die('Could not connect: ' . mysql_error()); }else { mysql_select_db($db_name, $link) or die('Could not select database.'); $result = mysql_query("SHOW tables", $link); while($row = mysql_fetch_row($result)) { print("$row[0]<br>"); } } mysql_close($link); ?> text/html 2020-08-10T02:35:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=mysql_copy_between_servers&rev=1597026936&do=diff Copy all database between servers NOTE : it not fully written there is many changes needed. #!/bin/bash #----------change following #destination username d_User_nm=<username> #destination password d_Passwo=<password> #source username s_User_nm=<username> #source password s_Passwo=<password> Src_host=<source_server> Dst_host=<Destination_server> db_skp=mysql #------------no further DBS="$(mysql -h $Src_host --user=$s_User_nm --password=$s_Passwo -Bse 'show databases')" for db in ${DB… text/html 2020-08-10T02:35:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=mysql_monitoring&rev=1597026936&do=diff Replication Nagios monitoring simply use this to monitor mysql replication from nagios #!/usr/bin/perl -w # Originally downloaded from nagios exchange http://exchange.nagios.org/components/com_mtree/attachment.php?link_id=1937&cf_id=24 # # Fixed check for slave IO and Slave SQL # k2patel <k2patel\@hotmail.com>. use strict; use Getopt::Long; use DBI; # Set DEFAULT inputs my $options = { 'master' => 'localhost', 'slave' => 'localhost', 'dbuser' => 'replication', 'dbpass' => 'testing', … text/html 2020-08-10T02:35:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=mysql_replication_status&rev=1597026936&do=diff Replication Status NOTE : This script is not yet ready. #!/usr/bin/perl -w # # mysql replication monitoring # generic attempt use strict; #use Data::Dumper; my $DEBUG = 0; $ENV{BBPROG} = "bb-mysql-replication"; my $TESTNAME = "mysqlrep"; my $BBHOME = $ENV{BBHOME}; my $BB = $ENV{BB}; # full path to the bin/bb util my $BBDISP = $ENV{BBDISP}; # IP of the BBDISPLAY server my $BBVAR = $ENV{BBVAR}; my $MACHINE = $ENV{MACHINE}; # hostname, fqdn my $COLOR … text/html 2020-08-10T02:35:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=nagios&rev=1597026928&do=diff Nagios Monitoring Servers Nagios Plugins Links to Nagios Plugins Memcached To monitor memcached using nagios. check_memcached Error / Resolution CASE 1 : Error : DISK CRITICAL check_disk : / / / is not accessible: Permission denied Solution : In my case this is because it is mounted as postgres user. text/html 2020-08-10T02:35:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=nconf_deployer&rev=1597026928&do=diff NConf Deployer nconf nice nagios configurator works awesome but i had issue with the addon script. So i have modified to work in my environment it's not special but it working since i deployed without any issue. I also added to keep Backup of previous working nagios configuration. text/html 2020-08-10T02:35:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=network_security_assesment&rev=1597026928&do=diff Network Security Assesment Site Tools NOTE : Some link might not work, but search based on the name and site. technical results to management categories OS configuration Vulnerabilities due to improperly configured operating system software Software maintenance text/html 2020-08-10T02:35:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=nfs&rev=1597026928&do=diff NFS Server / Client This is the notes from my setup. Server Export I am setting up server for NFSv4 without Security IP based access list. NOTE : Match your uid with anonuid /home 192.168.1.0/24(rw,sync,insecure,root_squash,no_subtree_check,fsid=0) /home/download 192.168.1.4(rw,nohide,sync,insecure,no_root_squash,no_subtree_check,anonuid=1000,anongid=100) /home/movies 192.168.1.4(rw,nohide,sync,insecure,no_root_squash,no_subtree_check,anonuid=1000,anongid=100) /home/net/Pictures… text/html 2023-08-17T13:38:36+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=openssl&rev=1692279516&do=diff OpenSSL Most used command Extract ca, crt and key from .pfx # Extract CA openssl pkcs12 -in ${cert}.pfx -nodes -nokeys -cacerts -out ${cert}-ca.crt # Extract Key openssl pkcs12 -in ${cert}.pfx -nocerts -out ${cert}.key # Extract Cert openssl pkcs12 -in ${cert}.pfx -clcerts -nokeys -out ${cert}.crt # Remove Password openssl rsa -in ${cert}.key -out ${cert}.key # Generate Bundle cat ${cert}.crt ${cert}-ca.crt > ${cert}-bundle.crt text/html 2020-08-10T02:35:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=opensuse&rev=1597026928&do=diff OpenSuse Setting up IPv6 Tunnel * what ever you read where ever you read you are missing this line “modprobe sit” so run it. * once you get your IPv6 from tunnel broker you need following. NOTE : change "Internal_ip" "Tunnel_broker_ip" "IPv6_ip" "IPv6_gateway_ip" with information you get from your broker text/html 2020-08-10T02:35:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=oracle_coherence&rev=1597026928&do=diff Oracle Coherence Advance caching server. Config Location Cluster configuration located at: tangosol-coherence-override.xml # Cluster Port configuration tangosol-coherence-override-dev.xml # General configuration about protocol text/html 2020-08-10T02:35:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=packages&rev=1597026928&do=diff Packages OR Emerge This page i am trying to cover what ever i have found during my setup and issue. To add build time options EXTRA_ECONF="--with-apxs=/home/apache/bin/apxs" emerge -O mod_security Right now, users can replace the defaults: prefix, host, mandir, infodir, datadir, sysconfdir, localstatedir and datadir, infodir, localstatedir, mandir, sysconfir text/html 2020-08-10T02:35:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=pdu&rev=1597026928&do=diff PDU (Protocol Data Unit) OSI Layers and Name PDU names for each OSI layers are as follow. Layer 1 - Physical -> Bits Layer 2 - Data Link -> Frame Layer 3 - Network-> Packet Layer 4 - Transport -> Segment or datagram Layer 5 - Session -> Data Layer 6 - Presentation text/html 2020-08-10T02:35:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=perl_db_script&rev=1597026928&do=diff #!/usr/bin/perl -w #Jason Thomas use strict; use lib "/home/jthomas/lib/perl5/site_perl/5.8.8/"; use Mysql; use Statistics::Descriptive; my $host = "hostname"; my $database = "keytest"; my $user = "admin"; my $pw = "admin"; my $beginDate = "2009-07-01"; my $endDate = "2009-07-31"; my @slotId = ("731147","731148","799084","799086","799088","799090","799091","698549"); my $connect = Mysql -> connect ($host, $database, $user, $pw); findTextId($beginDate, $endDate); sub findTextId{ my ($begi… text/html 2020-08-10T02:35:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=perl_execute_regex_and_insert_to_mysql_database&rev=1597026928&do=diff Perl script which excutes regex and insert to mysql database #!/bin/env perl # name: mstore # date: 20110515 # author: jason thomas <jason@lithiumfox.com> # purpose: take results of measure(site analytics utility), parse and insert into mysql backend use strict; use DBI; my $ns = "ns1.lithiumfox.com"; my $host = "www.lithiumfox.com"; my $time = time; export_results($time,$host,parse_results(measure($ns, $host))); sub measure { my ($ns, $host) = @_; my $measure_cmd = "/home/jason… text/html 2020-08-10T02:35:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=pgsql_tuneup_guide&rev=1597026928&do=diff Tunning PgSQL This is not so hard because there is tool available to do so thnx to “Greg Smith”. Name of tool is “pgtune“ Since Diff. machine has Diff. H.W. Profile you need to have Diff. configuration for diff. machine. Which make available most H.W. Resources during run time. text/html 2020-08-10T02:35:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=php&rev=1597026928&do=diff PHP pear Change pear setting to install alpha / beta / stable / devel --- packages. pear config-set preferred_state alpha suPHP <note warning>configure: error: cannot find install-sh, install.sh, or shtool in config “.”/config</note> Try running following before configure: text/html 2020-08-10T02:35:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=phpshell_scanner&rev=1597026928&do=diff PHP Shell Scanner #!/usr/bin/perl -w # findshell v1.0 == code taken/modified from traps.darkmindz.com #usage: ./findshell.pl <sensitivity 1-50> <directory to scan> use strict; use File::Find; my $sens = shift || 10; my $folder = shift || './'; find(\&backdoor, "$folder"); sub backdoor { if ((/\.(php|txt)/)){ open (my $IN,"<$_") || die "can not open datei $File::Find::name: $!"; my @file = <$IN>; #maybe evil stuffs my $score = grep (/function_exists\(|phpinfo\… text/html 2020-08-10T02:35:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=pianobar&rev=1597026929&do=diff PianoBAR Command line client for pandora. Project Home Get Source from Requirement Specification : libmad-devel libfaad2-devel gmake libao git You can find devel rpm @ rpmfusion To install simply run git clone git://github.com/PromyLOPh/pianobar.git cd pianobar gmake clean && gmake install text/html 2020-08-10T02:35:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=ping_test_script_for_cron&rev=1597026929&do=diff Simple Ping test script This is lame script for just to serve quick purpose. #!/bin/bash /sbin/ping -c 3 yahoo.com if [ $? -eq 0 ] then echo "Pinging" else echo "Not Pinging - Restarting Network" /etc/init.d/network restart fi text/html 2020-08-10T02:35:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=ping&rev=1597026929&do=diff Ping In this article i am trying to cover information about ping sweep. Ping sweep is just a way to find out which hosts are alive in a network or large number of IP addresses. List of Commands nmap -sP 192.168.1.1-254 fping -g 192.168.1.1 192.168.1.10 nmap -sP -PT22 192.168.1.1-30 ## Can be used when ICMP is blocked. text/html 2020-08-10T02:35:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=plex_media_server&rev=1597026929&do=diff Plex After upgrading plex to v 1.0 i found that existing reverse proxy on nginx broke.<br> started playing around and fixed it using following header need to be set. In your nginx. proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_max_temp_file_size 0; proxy_set_header X-Plex-Client-Identifier $http_x_plex_client_identifier; proxy_set_header X-Plex-Device $http_x_plex_device; … text/html 2020-08-10T02:35:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=port_management_and_help&rev=1597026929&do=diff FreeBSD Port Management Port package search pkg_info -a -I | grep -q ^awstats Port Update portsnap fetch extract Port Update Manually cvsup -g -L 2 -h cvsup3.us.freebsd.org /usr/share/examples/cvsup/ports-supfile Port Package Install pkg_add -r <package name> text/html 2020-08-10T02:35:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=postfix&rev=1597026929&do=diff Postfix Command Ref. display list of queue mailq OR postqueue -p process postfix queue postqueue -f OR postfix flush View Message postcat -vq <Message ID> Empty Queue ( Delete ) postsuper -d ALL text/html 2020-08-10T02:35:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=postgresql_replication_monitor&rev=1597026929&do=diff postgresql replication monitor #!/bin/bash # --------------- #< By k2patel > # ---------------- # \ ^__^ # \ (oo)\_______ # (__)\ )\/\ # ||----w | # || || # ############################# # Requirement Specification ############################# # - It require `bc` # - Only monitor streaming replication status ############################ ## Define Custom Variables ############################ ## Define Nagios utils LIBEXE… text/html 2020-08-10T02:35:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=prevent_freebsd_to_install_new_perl_during_make&rev=1597026929&do=diff Prevent Make to install new version of perl You can specify most of the variables or static package need to be used by make at /etc/make.conf to define perl version you need to use following variable PERL_VER=5.8.8 PERL_VERSION=5.8.8 In above case existing perl 5.8.8 is going to be used rather than new version. text/html 2020-08-10T02:35:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=print_environment_using_perl_cgi&rev=1597026929&do=diff Print Environment variable # this is really helpful while working with proxy etc.. #!/usr/bin/perl -wT use strict; use Net::Domain qw(hostname hostfqdn hostdomain); use CGI qw(:standard); use CGI::Carp qw(warningsToBrowser fatalsToBrowser); print header; print start_html("Environment"); foreach my $key (sort(keys(%ENV))) { print "$key = $ENV{$key}<br>\n"; } my $fqdn = hostfqdn(); print "Hostname = $fqdn \n"; print end_html; text/html 2020-08-10T02:35:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=process_check_script_for_cron&rev=1597026929&do=diff Process Check script for cron This script will check process if it is not running and will start the process if not running. First #!/bin/bash # check process ps -ef | grep -v grep | grep 2200:localhost:22 # if not found - equals to 1, start it if [ $? -eq 1 ] then ssh -f -N -R 2200:localhost:22 k2patel@71.245.248.138 echo "Process not running - Started" else echo “Process Running - do nothing” fi text/html 2020-08-10T02:35:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=puppet_upgrade_4.x_to_5.x&rev=1597026929&do=diff Puppet Upgrade 4.x to 5.x This is simple steps to upgrade puppet. Stop service systemctl stop puppetserver systemctl stop puppetdb Update Puppet server Download New repo puppet-release yum install puppetserver Postgresql upgrade Install New postgres pgdg-redhat9.6 systemctl stop postgresql-9.5 yum install postgresql96-server yum install postgresql96-contrib text/html 2020-08-10T02:35:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=puppet&rev=1597026929&do=diff Puppet (data center automation and configuration management framework) Puppet Upgrade 4.x to 5.x Puppet YUM Repository [Puppet_EL_Repo] name=Puppet Enterprise Linux baseurl=http://yum.puppetlabs.com/el/6/products/x86_64/ enabled=1 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-Key-Puppet [Puppet_EL_dependancies] name=Puppet Enterprise Dependencies baseurl=http://yum.puppetlabs.com/el/6/dependencies/x86_64/ enabled=1 gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-Key-Puppet text/html 2020-08-10T02:35:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=python_packages_to_rpm&rev=1597026929&do=diff Python Module RPM Generating python module rpm is easy. Please see the Python 3 and Python 2 Steps * Download source * Extract * Run command as provided in the manual. python setup.py bdist_rpm This will create RPM in dist folder. text/html 2020-08-10T02:35:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=python&rev=1597026929&do=diff Python User level installation of package PYTHONUSERBASE Defines the user base directory, which is used to compute the path of the user site-packages directory and Distutils installation paths. python setup.py install --user List all Installed Modules text/html 2020-08-10T02:35:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=qmail_and_procmail_how_to&rev=1597026929&do=diff Qmail and Procmail How To qmail wrapper to check each mail #!/bin/sh # original modified, taken from http://openwall.info/wiki/internal/email/qmail-procmail /var/qmail/bin/preline /usr/local/bin/procmail /usr/local/etc/procmail.rc && exit 0 # check if procmail returned EX_TEMPFAIL (75) [ $? -eq 75 ] && exit 111 # do we want to discard the message? [ $? -eq 99 ] && exit 99 # otherwise return a permanent error exit 100 text/html 2020-08-10T02:35:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=qmail&rev=1597026929&do=diff Qmail * qmail debian install Setting up RBL for qmail Add this code to qmail service startup file. if [ -f /var/qmail/control/spamhaus ]; then rblsmtpd="/usr/local/bin/rblsmtpd -r sbl-xbl.spamhaus.org" else rblsmtpd="/usr/local/bin/rblsmtpd -r cbl.abuseat.org -r dul.dnsbl.sorbs.net -r http.dnsbl.sorbs.net -r misc.dnsbl.sorbs.net -r smtp.dnsbl.s orbs.net -r socks.dnsbl.sorbs.net \ -r spam.dnsbl.sorbs.net -r web.dnsbl.sorbs.net -r zombie.dnsbl.sorbs.net" fi text/html 2022-05-16T20:05:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=quick_command_list&rev=1652731509&do=diff Quick Command Set Daily Life grab configure script from php installatio php -i | grep configure | tr -d \' find the disk usage for all the listed files/foldere du -sckh * | sort -n find uniq ip from file cat /etc/sitemap | awk '{print $2}' | xargs -n 1 ping -c 1 -t 1 | grep PING | awk '{print $3}' | sort | uniq text/html 2020-08-10T02:35:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=quick_tips_to_securing_windows_desktop&rev=1597026930&do=diff How to Secure Windows desktop (Free) Must have Microsoft have windows defender which help you protect in many way. Windows Defender Install this first. Make sure you run auto update when your computer online generally. Spyware Protection & Prevention This is necessary to prevent your computer to open harmful pages. text/html 2020-08-10T02:35:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=ramfs_based_table_space&rev=1597026930&do=diff Tablespace in Memory Setting up a tablespace From PostgreSQL documentation: Tablespaces in PostgreSQL allow database administrators to define locations in the file system where the files representing database objects can be stored. Once created, a tablespace can be referred to by name when creating text/html 2020-08-10T02:35:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=re-build_repository_index&rev=1597026930&do=diff Rebuild repository index (YUM) this script will regenerate repository index. #!/bin/bash # # Regenerate index for all High level folders in Repository. # You can specify Location for repository in array. # # Developed by k2patel (k2patel@hotmail.com) # For rpm.k2patel.in #^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ # Add all location for repository. Location=(/var/www/html/RHEL/6 /var/www/html/EPEL/5 /var/www/html/EPEL/6 /var/www/html/puppet/el6) ## Do not modify further… text/html 2020-08-10T02:35:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=receipe&rev=1597026930&do=diff * Indian * Italian text/html 2020-08-10T02:35:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=referance_subroutines&rev=1597026930&do=diff Introduction This page discusses both subroutines and references. They're on the same page because references are often passed into and out of subroutines. References In Perl, you can pass only one kind of argument to a subroutine: a scalar. To pass any other kind of argument, you need to convert it to a scalar. You do that by passing a text/html 2020-08-10T02:35:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=regular_expression&rev=1597026930&do=diff Regular Expression Quick Referance Perl Bash Apache text/html 2020-08-10T02:35:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=remote_password_change&rev=1597026930&do=diff Change User password remotely #!/usr/bin/expect # usage: runcmd <command> <password> # # NB: be sure to surround the command with double quotes # if the command string is more than 1 word # set timeout 30 set fid [open /root/utilz/scripts/hosts r] set contents [read -nonewline $fid] close $fid set cmd [lindex $argv 0] set password [lindex $argv 1] set newpass [lindex $argv 2] foreach host [split $contents "\n"] { spawn ssh -l root $host expect { "assword:" { … text/html 2020-08-10T02:35:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=reset_keychain_password&rev=1597026930&do=diff Reset Keychain password While using third party password authentication, many time your keychain password doesn't match your updated password.<BR> In order to update password without loosing key are using following command. # Find your default chain location security default-keychain "/Users/<username>/Library/Keychains/login.keychain-db" # Run following command to change password, followed by old and new prompt. security set-keychain-password $(security default-keychain) text/html 2020-08-10T02:35:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=resources&rev=1597026930&do=diff PostgreSQL Common Commands List of Databases : psql -l \? Help \d ~= desc \c <database> -- select database \dt Show Tables \dT list datatypes \df list functions \di list indexes \dv list views \da [PATTERN] list aggregate functions \db [PATTERN] list tablespaces (add "+" for more detail) \dc [PATTERN] list conversions \dC list casts \dd [PATTERN] show comment for object \dD [PATTERN] list domains \df [PATTERN] list functions (add "+" for more detail) \dg [… text/html 2020-08-10T02:35:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=restart_process_and_send_mail_if_fail&rev=1597026930&do=diff Restart process This script restart process and send email if it failes. #!/usr/bin/env python # -*- coding: utf-8 -*- """ Created on Fri Apr 6 11:13:21 2012 @author: kpatel """ import subprocess import time import smtplib # Define you email id to notify toaddrs = "kpatel@xyz.com" # Define Source Email ID fromaddr = "cron@pqr.com" def message(msg): server = smtplib.SMTP('localhost') subject = "Subject: [CRON] Error : failed to execute Process" msg = subject + '\n' + msg … text/html 2020-08-10T02:35:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=rpm&rev=1597026930&do=diff RPM * Python packages to rpm Package management system few tips / trick to build / modify / work with packages. Many hints information taken from original site RPM RPM Common Command Syntax Description rpm -ivh {rpm-file} Install the package rpm -Uvh {rpm-file} Upgrade package text/html 2020-08-10T02:35:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=rsycn_based_on_list.txt&rev=1597026930&do=diff Rsycn based on list.txt #### create file with name “list.txt” and add folder per line #!/bin/bash for i in $(cat list.txt); do rsync --verbose --progress --stats --compress --recursive --times --perms --links xx.yy.zz.dd::home/$i data/$i done text/html 2020-08-10T02:35:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=rsync&rev=1597026930&do=diff Rsync Commonly used switches for rsync with status and Common variable rsync --verbose --progress --stats --compress --recursive --times --perms --links <source> <destination> (location is defined as [hostname]::path) SSH Wrapper SSH Wrapper allows to transfer files using rsync over SSH. text/html 2020-08-10T02:35:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=rtorrent&rev=1597026930&do=diff Rtorrent - Best torrent client Quick Reference * Control-q : closes rTorrent, done twice makes the program shutdown without waiting to send stopping information to the trackers. * Left arrow : returns to the previous screen. * Right arrow : goes to the next screen. text/html 2020-08-10T02:35:30+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=ruby&rev=1597026930&do=diff Issue Related to Ruby Errors / Resolution error:14090086:SSL routines:SSL3_GET_SERVER_CERTIFICATE:certificate verify failed while accessing Resolution : export GIT_SSL_NO_VERIFY=true text/html 2020-08-10T02:35:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=sar_reporting&rev=1597026931&do=diff Sar Reporting This will give you graphical representation of system load. Also you can use it for capacity Planning. OR simply monitoring. Easy system monitoring with SAR Requirement Specification Following perl module require to be installed. Getopt::Std Time::Local Date::Calc Email::Date::Format text/html 2020-08-10T02:35:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=screen&rev=1597026931&do=diff Using Screen allow people to attach to my screen multiuser on allow the following people full control addacl root,aledesma,mymanager,mycoworker1,mycoworker2 aclchg aledesma +rwx “#?” allow everyone readonly access aclchg *,!aledesma -rwx “#?” text/html 2020-08-10T02:35:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=script_to_parse_space_separated_file&rev=1597026931&do=diff Parsing file for actions This script i have created to create qmail user using space separated file. File format i have received is <user> <account / forward> <forward> <forward> <forward> <forward> <forward> <forward> but the forwarder was not fixed. text/html 2020-08-10T02:35:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=scripts&rev=1597026931&do=diff Script I wrote for my sake * mysql replication status * Mysql copy between servers * Convert all file name to lover * create zip file and store at one location based on folder name * Send result to nagios nsca acceptor * FTP file fetch using perl * Mysql Backup Locally * Furnished Bckup Mysql * Generate good password * Rsycn based on list.txt * Process Check script for cron * Custom Log rotate script * SED Based File manipulation * Mysql Connection Test script * Ho… text/html 2020-08-10T02:35:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=security&rev=1597026931&do=diff Security WebDAV Readonly mode Make sure to disable following methods in webserver. # Disabled TRACE|TRACK|PUT|OPTIONS|DELETE|HEAD <Directory /var/www/html > AuthType None Satisfy Any Allow from all RewriteCond %{REQUEST_METHOD} ^(TRACE|TRACK|PUT|OPTIONS|DELETE|HEAD) RewriteRule .*$ - [F,L] </Directory> text/html 2020-08-10T02:35:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=sed_based_file_manipulation&rev=1597026931&do=diff Manipulate File based on list #!/bin/bash File_line = list Edit_file = httpd.conf for i in $File_line; do sed "s#DocumentRoot $i#DocumentRoot $i \\ php_admin_value open_basedir \"$i:/tmp\"#" $Edit_file #sed -i.bak "s#DocumentRoot $i#DocumentRoot $i \\ #php_admin_value disable_functions \"exec,system,passthru,readfile,shell_exec,escapeshellarg,escapeshellcmd,proc_close,proc_open,ini_alter,dl,popen,parse_ini_file,show_source\"#" httpd.conf done text/html 2020-08-10T02:35:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=send_result_to_nagios_nsca_acceptor&rev=1597026931&do=diff Send result to nagios nsca acceptor It is not done yet there is lot to improve next weekend .... :-P #!/bin/bash # Configuration file for send_nsca # Please update location accordingly. CFG="/etc/nagios/send_nsca.cfg" #First Service Check PRG_cl="-w 5.0,4.0,3.0 -c 10.0,6.0,4.0" Result_cl=`/usr/lib/nagios/plugins/check_load $PRG_cl` if `echo ${Result_cl} | grep "OK" 1>/dev/null 2>&1` then STA_cl=0 elif `echo ${Result_cl} | grep "WARNING" 1>/dev/null 2>&1` … text/html 2020-08-10T02:35:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=sendmail&rev=1597026931&do=diff Sendmail How to create .cf file from .mc It is always best practice to build .cf file from .mc m4 sendmail.mc > /etc/sendmail.cf Rebuild aliases when you modify /etc/mail/aliases. Possibly you see following message. alias database /etc/mail/aliases.db out of date text/html 2020-08-10T02:35:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=smtp_auth_test&rev=1597026931&do=diff SMTP Auth test using TELNET This is simple but it is very useful procedure to test email functionality. you need following information to authenticate your self. base64 encoded value for username and password. You can generate it using following command. text/html 2020-08-10T02:35:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=snapshot_backup&rev=1597026931&do=diff Backup This snapshot backup enable you to have retention. this manage my infrastructure backup on ec2. Requirement : * perl * Net::Amazon::EC2 * DBI:SQLite * bash Files : * config # store your amazon key here * db.pl # manage local DB for your snapshot / dates / volume text/html 2020-08-10T02:35:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=solaris&rev=1597026931&do=diff Solaris Issue connecting ssh If you come across issue where error say 'no common kex alg' while connecting from solaris to any machines like freebsd, freenas, Linux etc. Try to add following line to your sshd_config. KexAlgorithms curve25519-sha256@libssh.org,diffie-hellman-group1-sha1,diffie-hellman-group14-sha1,diffie-hellman-group-exchange-sha1,diffie-hellman-group-exchange-sha256,ecdh-sha2-nistp256,ecdh-sha2-nistp384,ecdh-sha2-nistp521 text/html 2020-08-10T02:35:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=spices&rev=1597026931&do=diff A Aniseed Saunf Apple Seb Almonds Badam Aubergine Baingan Asafoetida Hing Artichoke Hattichak Apricot Khubani Ashgourd Petha Alum Phitkari B Black Cardamoms Kali Elaichi, badi Elaichi Black peppercorns Kalamirchi Black salt Kalanamak/Sanchal Black gram Kala chana Black eyed beans Chola, alsande Brinjal Baingan Bengal gram, whole Chana Bengal gram, split Chana dal Bengal gram roasted,(puffed,split) Dalia Buttermilk Chhas/lassi… text/html 2020-08-10T02:35:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=squid&rev=1597026931&do=diff Squid Password Based Authentication After Install and default setting, you might want to enable password based proxy change following lines. Following line will enable .htaccess based password auth. auth_param basic program /usr/local/libexec/squid/ncsa_auth /usr/local/etc/squid/passwd text/html 2020-08-10T02:35:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=ssh_key_management&rev=1597026931&do=diff SSH Key Management Trying to automate key Management between Machines. It is controlled from Database. <note warning> Strictly ALPHA should not work or might kill your file </note> #!/usr/bin/env python # -*- coding: utf-8 -*- """ Created on Fri Apr 13 10:08:10 2012 This script used to manage and manipulate .ssh/authorized_keys User home directory defined based on /etc/passwd and /etc/shadow @author: k2patel """ import pwd import fileinput import subprocess ## Customization Start pg_use… text/html 2021-06-08T20:07:45+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=ssh&rev=1623182865&do=diff SSH Converting SSH2 Keys From ssh2 to openssh ssh-keygen -i -f id_dsa.pub > id_dsa_open.pub From OpenSSH to ssh2 ssh-keygen -e -f id_dsa.pub > id_dsa_ssh2.pub SCP Speed UP To increase speed on transfer you can force cipher to arcfour. You can use same mechanism with rsync when you use ssh encapsulation. text/html 2020-08-10T02:35:31+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=ssl&rev=1597026931&do=diff SSL / Openssl great way to secure it SSL Issue and Resolution Generate 2048 Bit CSR for godaddy. openssl req -nodes -newkey rsa:4096 -sha512 -keyout www.xyz.com.key -out www.xyz.com.csr Above command will not ask you for password. Which is not advisable on apache startup as you need to be present to supply password. text/html 2023-09-15T20:33:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=start&rev=1694810028&do=diff Start: This is Just Beginning QUICK * Quick Command List * Why Drive space is not as marked * Daily Admin Issues * SMTP Auth Test * guake * Daily Regular Expression * Where * Bad_Bot List * Bash * Chrome * python * Ruby * Gem * ZFS * OpenSSL * tlog Command Line Tools * Finch * BitchX * w3m * dig * bc (calculator) * rtorrent * vim * irssi * vmware * rsync * top * vmstat * mpstat * tmux * pianobar * mutt * ls * at * ping * … text/html 2020-08-10T02:35:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=streaming_replication&rev=1597026932&do=diff Replication PGSQL Building PGsQL ./configure --prefix=/usr/local/pg-9.0.3 --with-openssl --with-ossp-uuid --with-perl NOTE : Use --with-pgport=5435 if you want to hardcode port. postgresql.conf listen_addresses = '*' port = 5435 #### Only Define if you running on non default port. escape_string_warning = off shared_buffers = 8192MB temp_buffers = 16MB wal_level = hot_standby archive_mode = on archive_command = 'rsync -a /usr/local/pg-9.0.3/Archive/%p <IP>:Archive/%f' … text/html 2020-08-10T02:35:32+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=subversion&rev=1597026932&do=diff cd /usr/ports/devel/subversion Make backup of Makefile. Edit Makefile and add following line. (after SVNFSTYPE?= fsfs OR before any APXS appeared on file) APXS= /www/apache/bin/apxs Now make with following options. make -DWITH_MOD_DAV_SVN -DWITH_NEON -DWITH_BDB text/html 2020-08-10T02:35:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=syfy&rev=1597026926&do=diff * ESMF- Ubuntu 18.04 text/html 2020-12-22T23:37:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=synergy&rev=1608680227&do=diff Synergy Project : Github :!: Barrier / Opensource forked from 1.x after it became paid. Project : Barrier Installation :!: Since version 2.x there is GUI for synergy available and there is no hm.sh script in source. I've chose to use 2.x since it uses openssl to secure connection. text/html 2020-08-10T02:35:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=systemd&rev=1597026926&do=diff systemd Extending configuration This has bitten me many times, specially if you are running services as different user or require to extend the file limits. Everytime there is update it replaces the file and it create the issue of broken services. text/html 2023-12-19T18:17:15+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=tlog&rev=1703009835&do=diff To record all session using tlog To set up a comprehensive session recording and shipping of logs using PAM and rsyslog on a Linux system, you will need to follow several steps. Below is a general guideline for achieving this: tlog To record and store session logs using tlog, you can follow these steps: text/html 2020-08-10T02:35:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=tmux&rev=1597026926&do=diff tmux (terminal multiplexer) Good replacement for screen. Following is my own tmux config file. Tried to setup as near as screen. set-option -g prefix C-a unbind-key C-b bind-key C-a "last-window" unbind '"' unbind % # Remove default binding since we're replacing bind | split-window -h bind - split-window -v bind '"' list-window # Highlight active window set-window-option -g window-status-current-bg blue # Rename Based on active names setw -g automatic-rename set -g status-right '#[fg=y… text/html 2020-08-10T02:35:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=tomcat&rev=1597026926&do=diff Tomcat Tomcat SSL Setting up tomcat with HTTP Native library. <Connector port="8443" protocol="org.apache.coyote.http11.Http11AprProtocol" scheme="https" maxThreads="200" secure="true" SSLEnabled="true" SSLCertificateFile="/etc/pki/tls/certs/k2patel.in.crt" SSLCertificateKeyFile="/etc/pki/tls/private/k2patel.in.key" SSLCACertificateFile="/etc/pki/tls/certs/k2patel.in.int.ca" sslEnabledProtocols="TLSv1.1,TLSv1.2" SSLHonorCipherOrder="true" SSLCipherSuite="ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-R… text/html 2020-08-10T02:35:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=top&rev=1597026926&do=diff TOP command to help understanding system performance. Block on Top wa = waiting for IO us = userspace sy = system/kernel ni = nice processs id = idle hi = hardware interrupts si = software interrupts st = steal time (time in involuntary wait by virtual cpu while hypervisor is servicing another processor) text/html 2020-08-10T02:35:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=tuneup_guide&rev=1597026926&do=diff Mysql Has tuner If you see your mysql is slowing down or not performing good. You need to run following command first. mysqlcheck -u root --auto-repair --check --optimize --all-databases -p Third Party tuner Still feel slowness. see below. First, text/html 2020-08-10T02:35:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=tw_cli&rev=1597026926&do=diff tw_cli tw_cli is the CLI for monitoring and maintaining 3ware RAID controllers. It can be used for all maintenance operations that can be performed through the 3dmd daemon or the system BIOS. Checking the status of controller, array or disk info text/html 2020-08-10T02:35:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=two_mysql_instances&rev=1597026926&do=diff Two Mysql Instances * install mysql * copy the mysql data directory to say mysql1 So you have /var/db/mysql and /var/db/mysql1 * Open the first mysql /var/db/mysql/my.cnf Change <code text> port = <The port you want the first mysql to listen to> bind-address = <The ip you want the first mysql to bind to> </code> text/html 2020-08-10T02:35:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=update_4.11_ports&rev=1597026926&do=diff Updating ports on freebsd 4.11 Since freebsd 4.11 is EOL there is some special way to update it. modify following file. *default release=cvs tag=RELEASE_4_EOL NOTE : in above line - you are replacing “.” with “RELEASE_4_EOL” Now in order to update file use cvsup command. text/html 2020-08-10T02:35:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=update_bind_configurations&rev=1597026926&do=diff Update Bind Configurations #!/bin/bash # Check SVN repository for ACL update then, fetch and reload named BINDPATH="/etc/bind" MAILTO="jason@lithiumfox.com" REPO="http://jason.lithiumfox.com/svn/repos/dns" if $(svn st -u $BINDPATH|egrep '(acls.conf?|as[1-9]+.acl?)' > /dev/null 2>&1) then REVISION=$(svn update $BINDPATH | grep revision | awk '{print $NF}'| tr -d \.) if ERROR=$(/usr/sbin/named-checkconf $BINDPATH/named.conf) then /etc/init.d/named reload > /dev/null 2>&1 else let… text/html 2020-08-10T02:35:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=update_next_line_based_on_list_of_variable&rev=1597026926&do=diff Manipulate File based on list #!/bin/bash File_line = list Edit_file = httpd.conf for i in $File_line; do sed "s#DocumentRoot $i#DocumentRoot $i \\ php_admin_value open_basedir \"$i:/tmp\"#" $Edit_file #sed -i.bak "s#DocumentRoot $i#DocumentRoot $i \\ #php_admin_value disable_functions \"exec,system,passthru,readfile,shell_exec,escapeshellarg,escapeshellcmd,proc_close,proc_open,ini_alter,dl,popen,parse_ini_file,show_source\"#" httpd.conf done text/html 2020-08-10T02:35:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=upgrade_using_ius&rev=1597026926&do=diff Upgrade using iUS Enable iUS repository Follow guide available at iUS Stop mariadb and install systemctl stop mariadb yum install yum-plugin-replace yum replace mariadb-server --replace-with mariadb101u-server Setup file limit for mariadb File limit require to upgrade mariadb. text/html 2020-08-10T02:35:26+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=usage_on_fly&rev=1597026926&do=diff Perl CPAN To install Modules Locally local::lib enables you to install modules into a specified directory, without requiring root or administrator access. See the bootstrapping technique for how to get started. You can create a directory per user/project/company and deploy to other servers, text/html 2020-08-10T02:35:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=vim&rev=1597026927&do=diff VIM There's an old joke that Emacs would be a great operating system if only it had a decent text editor, whereas vi would be a great text editor if only it had a decent operating system. vi cheat-sheet a. cursor movements (items below are sometimes called objects): h - left one character l - right one character j - down one line k - up one line w - right one word b - back one word $ - to the end of line 0 - to the beginning of… text/html 2020-08-10T02:35:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=vlc_streaming&rev=1597026927&do=diff Vlc Streaming Server This is awsome player with all the capability. This is simple On Demand Streaming Server Example. Following is my setup: Streaming server on - 5454 you can setup any port Protocol - RTSP Listening on All ip : 0.0.0.0 You can bind to single ip using real ip text/html 2020-08-10T02:35:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=vmstat&rev=1597026927&do=diff vmstat This is just the man page snapshot for field description FIELD DESCRIPTION FOR VM MODE Procs r: The number of processes waiting for run time. b: The number of processes in uninterruptible sleep. Memory swpd: the amount of virtual memory used. free: the amount of idle memory. buff: the amount of memory used as buffers. cache: the amount of memory used as cache. inact: the amount of inactive memory. (-a option) active: the am… text/html 2020-08-10T02:35:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=vmware&rev=1597026927&do=diff VmWare Nice free full virtualization system. I am keeping entry of few command line tools for easy referance. Start / Stop Guest OS from command line vmrun -h https://localhost:8333/sdk -u root -p <password> stop "[standard] Windows 7/Windows 7.vmx" text/html 2020-08-10T02:35:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=vsftpd&rev=1597026927&do=diff VsFTPD Very secure, but hard to configure for virtual users and chroot. Usually virtual user help in hosting environment. But it is good to have diff. account on FTP for each person to specific location. Use configuration below and use the commands specified to create new user / manage users. text/html 2020-08-10T02:35:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=w3m&rev=1597026927&do=diff W3M (Text Browser) Introduction w3m is a pager/text-based WWW browser. You can browse local documents and/or documents on the WWW using a terminal emulator. Options Command line usage is w3m [options] [file|URL] If you specify filenames/URLs on command line, these documents are displayed. If you specify nothing, w3m reads a document from standard input and display it. If no filename and/or URLs are specified and standard input is tty, w3m terminates without displaying anything. text/html 2020-08-10T02:35:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=webalizer&rev=1597026927&do=diff Webalizer Installation Linux Log rotate - /etc/webstat/statrotate /www/logs/*access.log { monthly size 20M missingok notifempty compress postrotate /www/apache/bin/apachectl restart > /dev/null endscript } Stats - script - /usr/local/bin/statsupdate.sh #!/bin/bash user_home="/usr/www/virtual/spicy" for i in `ls /usr/www/virtual/spicy | grep www`; do if [ -d $user_home/$i/stats ] then if [ -s $user_home/$i/stats/webali… text/html 2020-08-10T02:35:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=webmin&rev=1597026927&do=diff Webmin text/html 2020-08-10T02:35:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=where&rev=1597026927&do=diff Where where it is located on OS Leased IP Information on your Machine Linux : /var/lib/dhclient/dhclient-eth0.leases FreeBSD: /var/db/dhclient.leases.fxp0 text/html 2020-08-10T02:35:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=why_drive_space_is_not_as_marked&rev=1597026927&do=diff Why drives space is diff. The issue is manufactures and OS developer. Both see the size differently. The short answer to there's two different measurement formats used. Decimal (GB) and binary (GiB) formats. Binary is used by OS and decimal is used by the manufacturers. text/html 2020-08-10T02:35:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=windows_quick_command&rev=1597026927&do=diff Command Helps On Windows How to reboot server from command line shutdown <options> -Available Options /? Displays the Help listing /i Displays the graphical user interface (GUI); it must be the first option /l Logs off the current user; it cannot be used with the /d or /m options /s Shuts down the computer /r Shuts down and restarts the computer /g Shuts down and restarts the computer and then restarts any registered applications /a Aborts system Shutdown /p Turns off the local compu… text/html 2020-08-10T02:35:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=wordpress_password_reset&rev=1597026927&do=diff #!/usr/local/bin/bash # Wordpress Password Reset # <Ketan Patel> k2patel@hotmail.com if [ $# -lt 2 ] then echo "Usage: $0 <Blog Location> <new Password> [<Admin User>]" exit 1 elif [ $# -lt 3 ] then WPUser='admin' else WPUser=$3 fi RESET="UPDATE wp_users SET user_pass=MD5('$2') WHERE user_login='$WPUser'" cd $1 DBNAME=`grep DB_NAME wp-config.php | cut -d "'" -f 4` DBPASS=`grep DB_PASSWORD wp-config.php | cut -d "'" -f 4` DBHOST=`grep DB_HOST wp-config.php | cut -d "'" -f 4` DBUSE… text/html 2020-08-10T02:35:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=xen_vm_creation&rev=1597026927&do=diff Xen VM Creation This script will create a vm from a image. #!/bin/env perl ## Build vm providing options ## $1 Hostname ## $2 IP Address - This will be checked to make sure that it currently not being used # test ip address is free # test vg for free space # create lv if test is good # dd image file to lv # mount root lv to test mount and edit files # mount var lv to test mount and edit files # create xen configuration # start xen use strict; usage(); check_user(); my $hostname=$ARGV[0]… text/html 2020-08-10T02:35:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=xfs&rev=1597026927&do=diff XFS Troubleshooting while something goes wrong. XFS+LVM Please make sure it is scanned and activated on LVM. vgscan -v --mknodes vgchange -a y Now this need to be repaired using xfs_repire command. There is no single point of command without knowing what is broken. text/html 2020-08-10T02:35:27+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=xtrabackup_script&rev=1597026927&do=diff XtraBackup Nice tool to create Hot Backup. Project Page #!/bin/bash today=`date +%Y%m%d` yesterday=`date -d 'now -2 days' +%Y%m%d` if [ ! -d /usr/new_db_backup/$today ]; then if /usr/bin/innobackupex-1.5.1 --defaults-file=/etc/my.cnf --tmpdir=/tmp --user=root --password=TestDrive --no-timestamp /usr/new_db_backup/$today then echo "Backup completed Successfully Location /usr/new_db_backup/$today" | mail -s "[BACKUPS] `hostname` " ketan@email.com … text/html 2020-08-10T02:35:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=youtube-dl&rev=1597026928&do=diff Youtube-dl In order to install youtube-dl simply run following in terminal. It require ffmpeg installed on your machine. pip install youtube-dl youtube-dl -F https://www.youtube.com/watch?v=H9tWRGxuKTw youtube-dl -f bestaudio --extract-audio --audio-format mp3 --audio-quality 320k https://www.youtube.com/watch?v=H9tWRGxuKTw text/html 2020-08-10T02:35:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=zfs&rev=1597026928&do=diff ZFS Zpool To check zpool status zpool status [<volume>] To clear error on drive, which you think reported wrongly. zpool clear <volume name> To add Zeus Drive zpool add performance log <drive> Adding spare to volume zpool add performance spare <drive> text/html 2020-08-10T02:35:28+00:00 Anonymous (anonymous@undisclosed.example.com) https://wiki.k2patel.in/doku.php?id=zoneli_-_zonelimit_state&rev=1597026928&do=diff Zoneli - Zonelimit State Problem Explained When there are no free mbuf clusters available, FreeBSD enters zonelimit state and stops awnsering network requests. You can see if the system has gone into “zoneli” state by using the top command. To see current mbuf cluster usage