Get the cluster health status

GET /_cat/health
Api key auth Basic auth Bearer auth

IMPORTANT: CAT APIs are only intended for human consumption using the command line or Kibana console. They are not intended for use by applications. For application consumption, use the cluster health API. This API is often used to check malfunctioning clusters. To help you track cluster health alongside log files and alerting systems, the API returns timestamps in two formats: HH:MM:SS, which is human-readable but includes no date information; Unix epoch time, which is machine-sortable and includes date information. The latter format is useful for cluster recoveries that take multiple days. You can use the cat health API to verify cluster health across multiple nodes. You also can use the API to track the recovery of a large cluster over a longer period of time.

Query parameters

  • time string

    The unit used to display time values.

    Values are nanos, micros, ms, s, m, h, or d.

  • ts boolean

    If true, returns HH:MM:SS and Unix epoch timestamps.

  • h string | array[string]

    List of columns to appear in the response. Supports simple wildcards.

  • s string | array[string]

    List of columns that determine how the table should be sorted. Sorting defaults to ascending and can be changed by setting :asc or :desc as a suffix to the column name.

Responses

GET /_cat/health 
curl \
 --request GET 'http://api.example.com/_cat/health' \
 --header "Authorization: $API_KEY"
Response examples (200)
A successful response from `GET /_cat/health?v=true&format=json`. By default, it returns `HH:MM:SS` and Unix epoch timestamps. 
[
  {
    "epoch": "1475871424",
    "timestamp": "16:17:04",
    "cluster": "elasticsearch",
    "status": "green",
    "node.total": "1",
    "node.data": "1",
    "shards": "1",
    "pri": "1",
    "relo": "0",
    "init": "0",
    "unassign": "0",
    "unassign.pri": "0",
    "pending_tasks": "0",
    "max_task_wait_time": "-",
    "active_shards_percent": "100.0%"
  }
]

Get master node information

GET /_cat/master
Api key auth Basic auth Bearer auth

Get information about the master node, including the ID, bound IP address, and name.

IMPORTANT: cat APIs are only intended for human consumption using the command line or Kibana console. They are not intended for use by applications. For application consumption, use the nodes info API.

Query parameters

  • h string | array[string]

    List of columns to appear in the response. Supports simple wildcards.

  • s string | array[string]

    List of columns that determine how the table should be sorted. Sorting defaults to ascending and can be changed by setting :asc or :desc as a suffix to the column name.

  • local boolean

    If true, the request computes the list of selected nodes from the local cluster state. If false the list of selected nodes are computed from the cluster state of the master node. In both cases the coordinating node will send requests for further information to each selected node.

  • master_timeout string

    Period to wait for a connection to the master node.

    Values are -1 or 0.

Responses

  • 200 application/json
    Hide response attributes Show response attributes object
GET /_cat/master 
curl \
 --request GET 'http://api.example.com/_cat/master' \
 --header "Authorization: $API_KEY"
Response examples (200)
A successful response from `GET /_cat/master?v=true&format=json`. 
[
  {
    "id": "YzWoH_2BT-6UjVGDyPdqYg",
    "host": "127.0.0.1",
    "ip": "127.0.0.1",
    "node": "YzWoH_2"
  }
]

Get datafeeds Added in 7.7.0

GET /_cat/ml/datafeeds/{datafeed_id}
Api key auth Basic auth Bearer auth

Get configuration and usage information about datafeeds. This API returns a maximum of 10,000 datafeeds. If the Elasticsearch security features are enabled, you must have monitor_ml, monitor, manage_ml, or manage cluster privileges to use this API.

IMPORTANT: CAT APIs are only intended for human consumption using the Kibana console or command line. They are not intended for use by applications. For application consumption, use the get datafeed statistics API.

Path parameters

  • datafeed_id string Required

    A numerical character string that uniquely identifies the datafeed.

Query parameters

  • allow_no_match boolean

    Specifies what to do when the request:

    • Contains wildcard expressions and there are no datafeeds that match.
    • Contains the _all string or no identifiers and there are no matches.
    • Contains wildcard expressions and there are only partial matches.

    If true, the API returns an empty datafeeds array when there are no matches and the subset of results when there are partial matches. If false, the API returns a 404 status code when there are no matches or only partial matches.

  • h string | array[string]

    Comma-separated list of column names to display.

    Supported values include:

    • ae (or assignment_explanation): For started datafeeds only, contains messages relating to the selection of a node.
    • bc (or buckets.count, bucketsCount): The number of buckets processed.
    • id: A numerical character string that uniquely identifies the datafeed.
    • na (or node.address, nodeAddress): For started datafeeds only, the network address of the node where the datafeed is started.
    • ne (or node.ephemeral_id, nodeEphemeralId): For started datafeeds only, the ephemeral ID of the node where the datafeed is started.
    • ni (or node.id, nodeId): For started datafeeds only, the unique identifier of the node where the datafeed is started.
    • nn (or node.name, nodeName): For started datafeeds only, the name of the node where the datafeed is started.
    • sba (or search.bucket_avg, searchBucketAvg): The average search time per bucket, in milliseconds.
    • sc (or search.count, searchCount): The number of searches run by the datafeed.
    • seah (or search.exp_avg_hour, searchExpAvgHour): The exponential average search time per hour, in milliseconds.
    • st (or search.time, searchTime): The total time the datafeed spent searching, in milliseconds.
    • s (or state): The status of the datafeed: starting, started, stopping, or stopped. If starting, the datafeed has been requested to start but has not yet started. If started, the datafeed is actively receiving data. If stopping, the datafeed has been requested to stop gracefully and is completing its final action. If stopped, the datafeed is stopped and will not receive data until it is re-started.

    Values are ae, assignment_explanation, bc, buckets.count, bucketsCount, id, na, node.address, nodeAddress, ne, node.ephemeral_id, nodeEphemeralId, ni, node.id, nodeId, nn, node.name, nodeName, sba, search.bucket_avg, searchBucketAvg, sc, search.count, searchCount, seah, search.exp_avg_hour, searchExpAvgHour, st, search.time, searchTime, s, or state.

  • s string | array[string]

    Comma-separated list of column names or column aliases used to sort the response.

    Supported values include:

    • ae (or assignment_explanation): For started datafeeds only, contains messages relating to the selection of a node.
    • bc (or buckets.count, bucketsCount): The number of buckets processed.
    • id: A numerical character string that uniquely identifies the datafeed.
    • na (or node.address, nodeAddress): For started datafeeds only, the network address of the node where the datafeed is started.
    • ne (or node.ephemeral_id, nodeEphemeralId): For started datafeeds only, the ephemeral ID of the node where the datafeed is started.
    • ni (or node.id, nodeId): For started datafeeds only, the unique identifier of the node where the datafeed is started.
    • nn (or node.name, nodeName): For started datafeeds only, the name of the node where the datafeed is started.
    • sba (or search.bucket_avg, searchBucketAvg): The average search time per bucket, in milliseconds.
    • sc (or search.count, searchCount): The number of searches run by the datafeed.
    • seah (or search.exp_avg_hour, searchExpAvgHour): The exponential average search time per hour, in milliseconds.
    • st (or search.time, searchTime): The total time the datafeed spent searching, in milliseconds.
    • s (or state): The status of the datafeed: starting, started, stopping, or stopped. If starting, the datafeed has been requested to start but has not yet started. If started, the datafeed is actively receiving data. If stopping, the datafeed has been requested to stop gracefully and is completing its final action. If stopped, the datafeed is stopped and will not receive data until it is re-started.

    Values are ae, assignment_explanation, bc, buckets.count, bucketsCount, id, na, node.address, nodeAddress, ne, node.ephemeral_id, nodeEphemeralId, ni, node.id, nodeId, nn, node.name, nodeName, sba, search.bucket_avg, searchBucketAvg, sc, search.count, searchCount, seah, search.exp_avg_hour, searchExpAvgHour, st, search.time, searchTime, s, or state.

  • time string

    The unit used to display time values.

    Values are nanos, micros, ms, s, m, h, or d.

Responses

  • 200 application/json
    Hide response attributes Show response attributes object
    • id string

      The datafeed identifier.

    • state string

      Values are started, stopped, starting, or stopping.

    • assignment_explanation string

      For started datafeeds only, contains messages relating to the selection of a node.

    • buckets.count string

      The number of buckets processed.

    • search.count string

      The number of searches run by the datafeed.

    • search.time string

      The total time the datafeed spent searching, in milliseconds.

    • search.bucket_avg string

      The average search time per bucket, in milliseconds.

    • search.exp_avg_hour string

      The exponential average search time per hour, in milliseconds.

    • node.id string

      The unique identifier of the assigned node. For started datafeeds only, this information pertains to the node upon which the datafeed is started.

    • node.name string

      The name of the assigned node. For started datafeeds only, this information pertains to the node upon which the datafeed is started.

    • node.ephemeral_id string

      The ephemeral identifier of the assigned node. For started datafeeds only, this information pertains to the node upon which the datafeed is started.

    • node.address string

      The network address of the assigned node. For started datafeeds only, this information pertains to the node upon which the datafeed is started.
GET /_cat/ml/datafeeds/{datafeed_id} 
curl \
 --request GET 'http://api.example.com/_cat/ml/datafeeds/{datafeed_id}' \
 --header "Authorization: $API_KEY"
Response examples (200)
A successful response from `GET _cat/ml/datafeeds?v=true&format=json`. 
[
  {
    "id": "datafeed-high_sum_total_sales",
    "state": "stopped",
    "buckets.count": "743",
    "search.count": "7"
  },
  {
    "id": "datafeed-low_request_rate",
    "state": "stopped",
    "buckets.count": "1457",
    "search.count": "3"
  },
  {
    "id": "datafeed-response_code_rates",
    "state": "stopped",
    "buckets.count": "1460",
    "search.count": "18"
  },
  {
    "id": "datafeed-url_scanning",
    "state": "stopped",
    "buckets.count": "1460",
    "search.count": "18"
  }
]