wait_for_active_shardsedit

This setting is used by the Reindex and Rollover actions. Each use it differently.

Reindexedit

For the reindex action, this setting determines the number of shard copies that must be active before proceeding with the reindex operation. The default value is 1, which implies only the primary shard.

Set to all for all shard copies, otherwise set to any non-negative value less than or equal to the total number of copies for the shard (number of replicas + 1)

actions:
  1:
    description: "Reindex index1,index2,index3 into new_index"
    action: reindex
    options:
      wait_interval: 9
      max_wait: -1
      wait_for_active_shards: 2
      request_body:
        source:
          index: ['index1', 'index2', 'index3']
        dest:
          index: new_index
    filters:
    - filtertype: none

Rolloveredit

For the rollover action, this setting is the number of shards expected to be active before the client returns. This can be set to the number of primary shards, or all primaries and replicas, or somewhere in the middle.

action: rollover
description: >-
  Rollover the index associated with index 'name', which should be in the
  form of prefix-000001 (or similar), or prefix-YYYY.MM.DD-1.
options:
  name: aliasname
  conditions:
    max_age: 1d
    max_docs: 1000000
  wait_for_active_shards: 5
  extra_settings:
    index.number_of_shards: 3
    index.number_of_replicas: 1
  timeout_override:
  continue_if_exception: False
  disable_action: False