The open and close index APIs allow to close an index, and later on opening it. A closed index has almost no overhead on the cluster (except for maintaining its metadata), and is blocked for read/write operations. A closed index can be opened which will then go through the normal recovery process.
The REST endpoint is
POST /my_index/_close POST /my_index/_open
It is possible to open and close multiple indices. An error will be thrown
if the request explicitly refers to a missing index. This behaviour can be
disabled using the
All indices can be opened or closed at once using
_all as the index name
or specifying patterns that identify them all (e.g.
Identifying indices via wildcards or
_all can be disabled by setting the
action.destructive_requires_name flag in the config file to
This setting can also be changed via the cluster update settings api.
Closed indices consume a significant amount of disk-space which can cause problems in managed environments. Closing indices can be disabled via the cluster settings
API by setting
false. The default is
Because opening an index allocates its shards, the
wait_for_active_shards setting on
index creation applies to the index opening action as well. The default value
on the open index API is 0, which means that the command won’t wait for the shards
to be allocated.