The file service discovery plugin updates the targets by reading the local file. YAML and JSON are the allowed file formats.

Example Configuration

Here is an example with out_forward updating targets by sending data:

<match pattern>
  @type forward
​
  <service_discovery>
    @type file
    path "/etc/fluentd/sd.yaml"
  </service_discovery>
</source>

Here is an example of target list file (/etc/fluentd/sd.yaml):

- 'host': 127.0.0.1
  'port': 24224
  'weight': 1
  'name': server1
- 'host': 127.0.0.1
  'port': 24225
  'weight': 1
  'name': server2

Parameters

@type

The value must be file.

path

The path of the target list.

The Content-Type is determined by file extension i.e.:

• YAML: yaml, yml

• JSON: json

conf_encoding

The encoding of the configuration file.

Parameters in Target List File

Each target has following parameters:

• host

• name

• port

• shared_key

• username

• password

• standby

• weight

host

The IP address or hostname of the server. It is a required parameter.

port

The port number of the host. It is a required parameter.

name

The name of the server.

shared_key

The shared key per server.

username

The username for authentication.

password

The password for authentication.

standby

weight

If this article is incorrect or outdated, or omits critical information, please let us know. Fluentd is an open-source project under Cloud Native Computing Foundation (CNCF). All components are available under the Apache 2 License.