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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
type
default
version
string
'/etc/fluent/sd.yaml'
1.8.0
The path of the target list.
The Content-Type is determined by file extension i.e.:
YAML: yaml, yml
JSON: json
conf_encoding
type
default
version
string
'utf-8'
1.8.0
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
type
default
version
string
nil
1.8.0
The IP address or hostname of the server. It is a required parameter.
port
type
default
version
integer
​
1.8.0
The port number of the host. It is a required parameter.
name
type
default
version
string
nil
1.8.0
The name of the server.
shared_key
type
default
version
string
nil
1.8.0
The shared key per server.
username
type
default
version
string
nil
1.8.0
The username for authentication.
password
type
default
version
string
nil
1.8.0
The password for authentication.
standby
type
default
version
bool
nil
1.8.0
weight
type
default
version
integer
60
1.8.0
If this article is incorrect or outdated, or omits critical information, please let us know.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.

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Example Configuration

Parameters

@type

path

conf_encoding

Parameters in Target List File

Example Configuration

Parameters

`@type`

`path`

`conf_encoding`

Parameters in Target List File

`host`

`port`

`name`

`shared_key`

`username`

`password`

`standby`

`weight`