Debugging Elasticsearch

Logs

Logs are written to folder /var/log/elasticsearch. 

Status Information

Elasticsearch status can be retrieved with any browser.

Check if node is up and running by using node base URL

Check cluster health

List nodes

Get detailed node information

http://10.1.252.52:9200/_nodes?pretty

List shards

Every Elasticsearch index is split into shards (default  = 5 shards) and redundantly stored in primary (p) and replica (r) shards.

List indices

List aliases