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Get cross-cluster replication stats API

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Get cross-cluster replication stats API

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Get cross-cluster replication stats.

Request

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GET /_ccr/stats

Prerequisites

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If the Elasticsearch security features are enabled, you must have monitor cluster privileges on the cluster that contains the follower index. For more information, see Security privileges.

Description

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This API gets cross-cluster replication stats. This API will return all stats related to cross-cluster replication. In particular, this API returns stats about auto-following, and returns the same shard-level stats as in the get follower stats API.

Response body

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This API returns the following information:

auto_follow_stats: (object) An object representing stats for the auto-follow coordinator.

This object consists of the following fields:

auto_follow_stats.number_of_failed_follow_indices: (long) The number of indices that the auto-follow coordinator failed to automatically follow. The causes of recent failures are captured in the logs of the elected master node and in the auto_follow_stats.recent_auto_follow_errors field.
auto_follow_stats.number_of_failed_remote_cluster_state_requests: (long) The number of times that the auto-follow coordinator failed to retrieve the cluster state from a remote cluster registered in a collection of auto-follow patterns.
auto_follow_stats.number_of_successful_follow_indices: (long) The number of indices that the auto-follow coordinator successfully followed.
auto_follow_stats.recent_auto_follow_errors: (array) An array of objects representing failures by the auto-follow coordinator.
follow_stats: (object) An object representing shard-level stats for follower indices; refer to the details of the response in the get follower stats API.

Examples

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This example retrieves cross-cluster replication stats:

GET /_ccr/stats

The API returns the following results:

{
  "auto_follow_stats" : {
    "number_of_failed_follow_indices" : 0,
    "number_of_failed_remote_cluster_state_requests" : 0,
    "number_of_successful_follow_indices" : 1,
    "recent_auto_follow_errors" : [],
    "auto_followed_clusters" : []
  },
  "follow_stats" : {
    "indices" : [
      {
        "index" : "follower_index",
        "shards" : [
          {
            "remote_cluster" : "remote_cluster",
            "leader_index" : "leader_index",
            "follower_index" : "follower_index",
            "shard_id" : 0,
            "leader_global_checkpoint" : 1024,
            "leader_max_seq_no" : 1536,
            "follower_global_checkpoint" : 768,
            "follower_max_seq_no" : 896,
            "last_requested_seq_no" : 897,
            "outstanding_read_requests" : 8,
            "outstanding_write_requests" : 2,
            "write_buffer_operation_count" : 64,
            "follower_mapping_version" : 4,
            "follower_settings_version" : 2,
            "follower_aliases_version" : 8,
            "total_read_time_millis" : 32768,
            "total_read_remote_exec_time_millis" : 16384,
            "successful_read_requests" : 32,
            "failed_read_requests" : 0,
            "operations_read" : 896,
            "bytes_read" : 32768,
            "total_write_time_millis" : 16384,
            "write_buffer_size_in_bytes" : 1536,
            "successful_write_requests" : 16,
            "failed_write_requests" : 0,
            "operations_written" : 832,
            "read_exceptions" : [ ],
            "time_since_last_read_millis" : 8
          }
        ]
      }
    ]
  }
}

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