cat indices
editcat indices
editThe indices
command provides a cross-section of each index. This
information spans nodes. For example:
GET /_cat/indices/twi*?v&s=index
Might respond with:
health status index uuid pri rep docs.count docs.deleted store.size pri.store.size yellow open twitter u8FNjxh8Rfy_awN11oDKYQ 1 1 1200 0 88.1kb 88.1kb green open twitter2 nYFWZEO7TUiOjLQXBaYJpA 1 0 0 0 260b 260b
We can tell quickly how many shards make up an index, the number of docs, deleted docs, primary store size, and total store size (all shards including replicas). All these exposed metrics come directly from Lucene APIs.
Notes:
Primaries
editThe index stats by default will show them for all of an index’s
shards, including replicas. A pri
flag can be supplied to enable
the view of relevant stats in the context of only the primaries.
Examples
editWhich indices are yellow?
GET /_cat/indices?v&health=yellow
Which looks like:
health status index uuid pri rep docs.count docs.deleted store.size pri.store.size yellow open twitter u8FNjxh8Rfy_awN11oDKYQ 1 1 1200 0 88.1kb 88.1kb
Which index has the largest number of documents?
GET /_cat/indices?v&s=docs.count:desc
Which looks like:
health status index uuid pri rep docs.count docs.deleted store.size pri.store.size yellow open twitter u8FNjxh8Rfy_awN11oDKYQ 1 1 1200 0 88.1kb 88.1kb green open twitter2 nYFWZEO7TUiOjLQXBaYJpA 1 0 0 0 260b 260b
How many merge operations have the shards for the twitter
completed?
GET /_cat/indices/twitter?pri&v&h=health,index,pri,rep,docs.count,mt
Might look like:
health index pri rep docs.count mt pri.mt yellow twitter 1 1 1200 16 16
How much memory is used per index?
GET /_cat/indices?v&h=i,tm&s=tm:desc
Might look like:
i tm twitter 8.1gb twitter2 30.5kb