Configuration File

This can be a single value:

hosts: 127.0.0.1

Or multiple values in the 3 acceptable YAML ways to render sequences, or arrays:

Flow:

hosts: [ "10.0.0.1", "10.0.0.2" ]

Spanning:

hosts: [ "10.0.0.1",
    "10.0.0.2" ]

Block:

hosts:
  - 10.0.0.1
  - 10.0.0.2

You can also provide these hosts with optional ports, and bypass the port option:

hosts:
  - 10.0.0.1:9200
  - 10.0.0.2:9201

This should be a single value:

port: 9200

The default is 9200. This value will only be applied to hosts without a port affixed, e.g. localhost:9202.

This should be a single value or left empty.

url_prefix:

In some cases you may be obliged to connect to your Elasticsearch cluster through a proxy of some kind. There may be a URL prefix before the API URI items, e.g. http://example.com/elasticsearch/ as opposed to http://localhost:9200. In such a case, set the url_prefix to the appropriate value, elasticsearch in this example.

The default is an empty string.

This should be True, False or left empty.

use_ssl:

If access to your Elasticsearch instance is protected by SSL encryption, you must use set use_ssl to True.

The default is False

This should be a file path to your CA certificate, or left empty.

certificate:

This setting allows the use of a specified CA certificate file to validate the SSL certificate used by Elasticsearch.

There is no default.

This should be a file path to a client certificate (public key), or left empty.

client_cert:

Allows the use of a specified SSL client cert file to authenticate to Elasticsearch. The file may contain both an SSL client certificate and an SSL key, in which case client_key is not used. If specifying client_cert, and the file specified does not also contain the key, use client_key to specify the file containing the SSL key. The file must be in PEM format, and the key part, if used, must be an unencrypted key in PEM format as well.

This should be a file path to a client key (private key), or left empty.

client_key:

Allows the use of a specified SSL client key file to authenticate to Elasticsearch. If using client_cert and the file specified does not also contain the key, use client_key to specify the file containing the SSL key. The key file must be an unencrypted key in PEM format.

This should be an AWS IAM access key, or left empty.

aws_key:

This should be an AWS IAM secret access key, or left empty.

aws_secret_key:

This should be an AWS region, or left empty.

aws_region:

This should be True, False or left empty.

ssl_no_validate:

If access to your Elasticsearch instance is protected by SSL encryption, you may set ssl_no_validate to True to disable SSL certificate verification.

Valid use cases for doing so include the use of self-signed certificates that cannot be otherwise verified and would generate error messages.

The default value is False.

This should be a authentication credentials (e.g. user:pass), or left empty.

http_auth:

This setting allows basic HTTP authentication to an Elasticsearch instance.

The default is empty.

This should be an integer number of seconds, or left empty.

timeout:

You can change the default client connection timeout value with this setting.

The default value is 30 (seconds) should typically not be changed to be very large. If a longer timeout is necessary for a given action, such as snapshot, restore, or forcemerge, the client timeout can be overridden on per action basis by setting timeout_override in the action options. There are default override values for some of those longer running actions.

This should be True, False or left empty.

master_only:

In some situations, primarily with automated deployments, it makes sense to install Curator on every node. But you wouldn’t want it to run on each node. By setting master_only to True, this is possible. It tests for, and will only continue running on the node that is the elected master.

The default value is False.

This should be CRITICAL, ERROR, WARNING, INFO, DEBUG, or left empty.

loglevel:

Set the minimum acceptable log severity to display.

The default value is INFO.

This should be a path to a log file, or left empty.

logfile:

The default value is empty, which will result in logging to STDOUT, or the console.

This should default, json, logstash, or left empty.

logformat:

The default format looks like:

2016-04-22 11:53:09,972 INFO      Action #1: ACTIONNAME

The json or logstash formats look like:

{"@timestamp": "2016-04-22T11:54:29.033Z", "function": "cli", "linenum": 178,
"loglevel": "INFO", "message": "Action #1: ACTIONNAME", "name": "curator.cli"}

The default value is default.

This should be an empty array [], an array of log handler strings, or left empty.

blacklist: ['elasticsearch', 'urllib3']

The default value is ['elasticsearch', 'urllib3'], which will result in logs for the elasticsearch and urllib3 Python modules not being output. These can be quite verbose, so unless you need them to debug an issue, you should accept the default value.