Fluentd output plugin which adds timestamp field to record. Timestamp format can be seconds and milliseconds from epoch, iso8601 and you can also use strftime() format.

$ gem install fluent-plugin-timestamper

Put your configuration in /etc/fluent/fluent.conf

<match foo>
  type timestamper
  tag tag.to.rewrite
  key name_of_key
  format milliseconds # or "seconds", "iso8601", "%Y-%m-%d"
</match>

1. Fork it ( https://github.com/[my-github-username]/fluent-plugin-timestamper/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request