fluent-plugin-firelens-tag-filter

Fluentd output plugin to rewrite tag of message sent by AWS Firelens.

A tag of messages from AWS firelens has format like [containerName]-firelens-[taskID], but a tag of fluentd is a string separated by dots (e.g. myapp.access) usually.

fluent-plugin-firelens-tag-filter rewrites message tags from [containerName]-firelens-[taskID] to [tag_prefix].[containerName].(stdout|stderr).[taskID] by default.

$ gem install fluent-plugin-firelens-tag-filter

Add following line to your Gemfile:

gem "fluent-plugin-firelens-tag-filter"

And then execute:

$ bundle

<match *-firelens-*>
  @type firelens_tag_filter
  tag_prefix ecs       # default firelens
</match>

<filter ecs.nginx.stdout.**>
  @type parser
  key_name log
  format ltsv
</filter>

<match ecs.app.**>
  # ...
</match>

Customize tag format.

<match *-firelens-*>
  @type firelens_tag_filter
  tag ${container_name}.${source}
</match>

<match app.stdout>
  # ...
</match>

Placeholders allowed in tag as below.

• ${container-name} : Container name in task.
• ${task_id} : ECS task ID
• ${source} : source field in record (stdout or stderr)

• Copyright(c) 2020- FUJIWARA Shunichiro
• License
  • Apache License, Version 2.0