The filter_stdout filter plugin prints events to stdout (or logs if launched with daemon mode). This filter plugin is useful for debugging purposes.

Example Configurations

filter_stdout is included in Fluentd's core. No installation required.

<filter pattern>
  @type stdout
</filter>

A sample output is as follows:

2017-11-28 11:43:13.814351757 +0900 tag: {"field1":"value1","field2":"value2"}

where the first part shows the output time, the second part shows the tag, and the third part shows the record.

Plugin helpers

• ​formatter​

• ​compat_parameters​

• ​inject​

Parameters

​Common Parameters​

@type (required)

The value must be stdout.

<format> section

See Format section configurations for more details.

@type

The format of output.

output_type

This is the option of stdout format. Configure the format of record (third part). Any formatter plugins can be specified.

<inject> section

See Inject section configurations for more details.

Learn More

• ​Filter Plugin Overview​

If this article is incorrect or outdated, or omits critical information, please let us know.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