Tips for ELK

Here we want to list the common issues faced with ELK and their solutions

The cluster status or an index is red

Issue

heetis@HEE-TIS-VM-PROD-ES:~$ curl http://127.0.0.1:9200/_cat/indices|grep red
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 16875  100 16875    0     0   265k      0 --:--:-- --:--:-- --:--:--  270k
heetis@HEE-TIS-VM-PROD-ES:~$

Diagnostic

heetis@HEE-TIS-VM-DEV-ES:~$ curl -XGET localhost:9200/_cat/shards?h=index,shard,prirep,state,unassigned.reason| grep UNASSIGNED
heetis@HEE-TIS-VM-DEV-ES:~$

Fix

heetis@HEE-TIS-VM-DEV-ES:~$ curl -XPUT 'localhost:9200/_cluster/settings' -d '{ "persistent":
  { "cluster.routing.allocation.enable" : "all"
  }
}
heetis@HEE-TIS-VM-DEV-ES:~$

Some indices are yellow

issue

heetis@HEE-TIS-VM-UAT-ES:~$ curl http://127.0.0.1:9200/_cat/indices|grep yellow
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 16576  100 16576    0     0   695k      0 --:--:-- --:--:-- --:--:--  703k
yellow open .kibana                         1 1      1 0     3kb     3kb
heetis@HEE-TIS-VM-UAT-ES:~$

Diagnostic TODO

Fix

heetis@HEE-TIS-VM-UAT-ES:~$ curl -XPUT 'localhost:9200/.kibana/_settings' -d '{"number_of_replicas": 0}'
heetis@HEE-TIS-VM-UAT-ES:~$

To list all backup repositories

curl -XGET http://localhost:9200/_snapshot/_all
To list all snapshots in the repository (elasticsearch)

curl -XGET http://localhost:9200/_snapshot/elasticsearch/_all
To restore a particular snapshot (Eg: 2017.01.18)

curl -X POST http://localhost:9200/_snapshot/elasticsearch/2017.01.18/_restore

Tips for ELK

The cluster status or an index is red

Some indices are yellow

To list all backup repositories

To list all snapshots in the repository (elasticsearch)

To restore a particular snapshot (Eg: 2017.01.18)

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