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--- mod_proxy_ajp [2012/04/20 16:46] – created k2patel
+++ mod_proxy_ajp [2020/08/10 02:35] (current) – external edit 127.0.0.1
@@ Line 4: / Line 4: @@
 But we had some old services require it and we down to road for mod_proxy_ajp.\\
 alternatively you can choose [[http://www.jboss.org/mod_cluster | mod_cluster]].\\
+==== Documentation ====
+[[http://httpd.apache.org/docs/2.2/mod/mod_proxy_ajp.html | mod_proxy_ajp]]
+==== quick explanation / observation ====
+This module does not monitor services.\\
+But it does checking before service request if it fails it fall back to next node.\\
+=== = ===
+Sticky session can be used by setting variable name to stickysession there is many way to define it.\\
+but result will be same.\\
+<code bash>
+stickysession=JSESSIONID
+</code>
+=== = ===
+**Keep in Mind**\\
+BalancerMember is AJP connector so you need to use AJP connector port number.
+=== = ===
+Balancer Manager is a satus page just like info-page or status-page from mod_status.\\
+<code bash>
+/balancer-manager
+</code>
+=== = ===
+If you receive error as shown below.
+<code error>
+[error] (70014)End of file found: ajp_ilink_receive() can't receive header
+[error] ajp_read_header: ajp_ilink_receive failed
+[error] (120006)APR does not understand this error code: proxy: read response failed from (null) (localhost)
+</code>
+Mostly likely you need to set packet size on jboss. **packetSize="20000"**
+<code xml | server.xml>
+  <Connector port="8009" address="${jboss.bind.address}"
+         enableLookups="false" redirectPort="8443" debug="0"
+         protocol="AJP/1.3" packetSize="20000"/>
+</code>
+==== My Configuration ====
+<code httpd>
+LoadModule proxy_ajp_module modules/mod_proxy_ajp.so
+#
+# When loaded, the mod_proxy_ajp module adds support for
+# proxying to an AJP/1.3 backend server (such as Tomcat).
+# To proxy to an AJP backend, use the "ajp://" URI scheme;
+# Tomcat is configured to listen on port 8009 for AJP requests
+# by default.
+#
+#
+# Uncomment the following lines to serve the ROOT webapp
+# under the /tomcat/ location, and the jsp-examples webapp
+# under the /examples/ location.
+#
+#ProxyPass /tomcat/ ajp://localhost:8009/
+#ProxyPass /examples/ ajp://localhost:8009/jsp-examples/
+<VirtualHost 10.0.1.5:80>
+ServerName linux4
+<Proxy balancer://cluster>
+Order deny,allow
+Allow from all
+BalancerMember ajp://localhost:8009/Untitled1 route=node1
+BalancerMember ajp://localhost:8010/Untitled1 route=node2
+ProxySet maxattempts=1
+ProxySet stickysession=JSESSIONID
+ProxySet timeout=300
+</Proxy>
+ProxyIOBufferSize 19000
+LimitRequestFieldsize 18000
+ProxyTimeout 300
+ProxyStatus Full
+ProxyPass /Untitled1 balancer://cluster/
+#ProxyPassReverse /Untitled1 http://linux4/Untitled1
+<Location /balancer-manager>
+SetHandler balancer-manager
+Order Deny,Allow
+Deny from all
+Allow from localhost
+Allow from 10.0.0.0/4
+</Location>
+</VirtualHost>
+</code>