- Does Filebeat have capability to decode compressed file - gz, bz2 input ?
- If not, what is the best practice suggested ? (filebeat in conjunction with other utilities, plugins etc)
Currently it doesn't. There is an ongoing discussion if we should support it. See https://github.com/elastic/beats/pull/3070 It would be very interesting to hear more about your use case here.
What you could do, is use a tool to unzip the content and use filebeat with stdin prospector to fetch the data.