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cat nodeattrs API

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cat nodeattrs API

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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.

Returns information about custom node attributes.

Request

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GET /_cat/nodeattrs

Prerequisites

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If the Elasticsearch security features are enabled, you must have the monitor or manage cluster privilege to use this API.

Query parameters

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format

(Optional, string) Short version of the HTTP accept header. Valid values include JSON, YAML, etc.

h

(Optional, string) Comma-separated list of column names to display.

If you do not specify which columns to include, the API returns the default columns in the order listed below. If you explicitly specify one or more columns, it only returns the specified columns.

Valid columns are:

node,name: (Default) Name of the node, such as DKDM97B.
host, h: (Default) Host name, such as n1.
ip, i: (Default) IP address, such as 127.0.1.1.
attr, attr.name: (Default) Attribute name, such as rack.
value, attr.value: (Default) Attribute value, such as rack123.
id, nodeId: ID of the node, such as k0zy.
pid, p: Process ID, such as 13061.
port, po: Bound transport port, such as 9300.

help

(Optional, Boolean) If true, the response includes help information. Defaults to false.

local

(Optional, Boolean) If true, the request retrieves information from the local node only. Defaults to false, which means information is retrieved from the master node.

master_timeout

(Optional, time units) Period to wait for the master node. If the master node is not available before the timeout expires, the request fails and returns an error. Defaults to 30s. Can also be set to -1 to indicate that the request should never timeout.

s

(Optional, string) Comma-separated list of column names or column aliases used to sort the response.

v

(Optional, Boolean) If true, the response includes column headings. Defaults to false.

Examples

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Example with default columns

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resp = client.cat.nodeattrs(
    v=True,
)
print(resp)

response = client.cat.nodeattrs(
  v: true
)
puts response

const response = await client.cat.nodeattrs({
  v: "true",
});
console.log(response);

GET /_cat/nodeattrs?v=true

The API returns the following response:

node    host      ip        attr     value
...
node-0 127.0.0.1 127.0.0.1 testattr test
...

The node, host, and ip columns provide basic information about each node. The attr and value columns return custom node attributes, one per line.

Example with explicit columns

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The following API request returns the name, pid, attr, and value columns.

resp = client.cat.nodeattrs(
    v=True,
    h="name,pid,attr,value",
)
print(resp)

response = client.cat.nodeattrs(
  v: true,
  h: 'name,pid,attr,value'
)
puts response

const response = await client.cat.nodeattrs({
  v: "true",
  h: "name,pid,attr,value",
});
console.log(response);

GET /_cat/nodeattrs?v=true&h=name,pid,attr,value

The API returns the following response:

name    pid   attr     value
...
node-0 19566 testattr test
...

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