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elasticsearch [2021/01/25 18:32]
k2patel [Rolling Upgrade]
elasticsearch [2021/01/25 23:41] (current)
k2patel [Quick Commands]
Line 5: Line 5:
 <code bash> <code bash>
 curl -XGET '​http://​localhost:​9200/​_cluster/​health?​pretty=true'​ curl -XGET '​http://​localhost:​9200/​_cluster/​health?​pretty=true'​
-</​code>​ 
- 
-== Node Information == 
-<code bash> 
-curl -XGET '​http://​localhost:​9200/​_nodes?​pretty=true'​ 
 </​code>​ </​code>​
  
Line 20: Line 15:
 <code bash> <code bash>
 curl -XGET '​http://​localhost:​9200/​_cat/​shards'​ curl -XGET '​http://​localhost:​9200/​_cat/​shards'​
 +</​code>​
 +
 +== Unassigned shard | timeout ==
 +**Try restarting**
 +<code bash>
 +curl -XPOST -k https://​admin:<​password>​@<​hostname>:​9200/​_cluster/​reroute?​retry_failed=true --CApath /​etc/​elasticsearch/​root-ca-key.pem
 +</​code>​
 +**List indexes not assigned**
 +<code bash>
 +curl -k --CApath /​etc/​elasticsearch/​root-ca-key.pem -XGET https://​admin:<​password>​@<​hostname>:​9200/​_cat/​shards?​h=index,​shard,​prirep,​state,​unassigned.reason | grep -i UNASSIGNED
 +</​code>​
 +**Detailed information on issue**
 +<code bash>
 +curl -k --CApath /​etc/​elasticsearch/​root-ca-key.pem -XGET https://​admin:<​password>​@<​hostname>:​9200/​_cluster/​allocation/​explain?​pretty
 </​code>​ </​code>​
  
Line 31: Line 40:
 curl -XDELETE '​http://​localhost:​9200/​*.reindex'​ curl -XDELETE '​http://​localhost:​9200/​*.reindex'​
 </​code>​ </​code>​
 +
 +== Disk usage issue ==
 +When free disk space fall cluster fails.
 +<code bash>
 +curl -H '​Content-Type:​ application/​json'​ -X PUT -d '{
 +  "​transient":​ {
 +    "​cluster.routing.allocation.disk.watermark.low":​ "​89%",​
 +    "​cluster.routing.allocation.disk.watermark.high":​ "​94%",​
 +   "​cluster.info.update.interval":​ "​1m"​
 +  }
 +}' http://​localhost:​9200/​_cluster/​settings
 +</​code>​
 +
 +
 ==== Templates ==== ==== Templates ====
  
Line 140: Line 163:
   }   }
 }' https://​admin:<​password>​@<​hostname>:​9200/​_cluster/​settings --CApath /​etc/​elasticsearch/​root-ca-key.pem }' https://​admin:<​password>​@<​hostname>:​9200/​_cluster/​settings --CApath /​etc/​elasticsearch/​root-ca-key.pem
 +</​code>​
  
 +=== Flush / Sync data on all host in cluster ===
 +<code bash>
 +curl -k -XPOST https://​admin:<​password>​@<​hostname>:​9200/​_flush/​synced --CApath /​etc/​elasticsearch/​root-ca-key.pem
 +</​code>​
 +
 +=== Stop / Upgrade / start Services ===
 +<code bash>
 +systemctl stop kibana.service
 +systemctl stop elasticsearch.service
 +dnf install opendistroforelasticsearch-1.12.0 -y
 +dnf install opendistroforelasticsearch-kibana-1.12.0 -y
 +systemctl start elasticsearch.service
 +systemctl start kibana.service
 +</​code>​
 +
 +=== Enable Sharding ===
 +<code bash>
 +curl -k -H '​Content-Type:​ application/​json'​ -XPUT -d '{
 +"​persistent":​ {
 +    "​cluster.routing.allocation.enable":​ "​all"​
 +  }
 +}' https://​admin:<​password>​@<​hostname>:​9200/​_cluster/​settings --CApath /​etc/​elasticsearch/​root-ca-key.pem
 +</​code>​
 +
 +==== Node Information ====
 +=== List all nodes and important information ===
 +:​!:​[[https://​www.elastic.co/​guide/​en/​elasticsearch/​reference/​current/​cat-nodes.html | Document Ref.]]
 +<code bash>
 +curl -XGET -k https://​admin:<​password>​@<​hostname>:​9200/​_cat/​nodes?​v=true\&​h=id,​ip,​port,​v,​m,​hp,​l,​r,​j,​fdc,​fdm
 +</​code>​
elasticsearch.1611599547.txt.gz ยท Last modified: 2021/01/25 18:32 by k2patel