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[[cat-indices]]
== Indices
The `indices` command provides a cross-section of each index. This
information *spans nodes*.
[source,shell]
--------------------------------------------------
% curl 'localhost:9200/_cat/indices/twi*?v'
health index pri rep docs.count docs.deleted store.size pri.store.size
green twitter 5 1 11434 0 64mb 32mb
green twitter2 2 0 2030 0 5.8mb 5.8mb
--------------------------------------------------
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).
[float]
[[pri-flag]]
=== Primaries
The 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.
[float]
[[examples]]
=== Examples
Which indices are yellow?
[source,shell]
--------------------------------------------------
% curl localhost:9200/_cat/indices | grep ^yell
yellow wiki 2 1 6401 1115 151.4mb 151.4mb
yellow twitter 5 1 11434 0 32mb 32mb
--------------------------------------------------
What's my largest index by disk usage not including replicas?
[source,shell]
--------------------------------------------------
% curl 'localhost:9200/_cat/indices?bytes=b' | sort -rnk7
green wiki 2 0 6401 1115 158843725 158843725
green twitter 5 1 11434 0 67155614 33577857
green twitter2 2 0 2030 0 6125085 6125085
--------------------------------------------------
How many merge operations have the shards for the `wiki` completed?
[source,shell]
--------------------------------------------------
% curl 'localhost:9200/_cat/indices/wiki?pri&v&h=health,index,prirep,docs.count,mt'
health index docs.count mt pri.mt
green wiki 9646 16 16
--------------------------------------------------
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