Logstash Plugin
This is a plugin for Logstash.
This filter add rancher metadata to messages that contain a Docker container ID. It's heavily inspired from logstash-filter-docker_metadata.
At current, the filter enriches the messages with the following tags
- Container name (name)
- Container IP (primary_ip)
- Container service name (service_name)
- Container stack name (stack_name)
It is fully free and fully open source. The license is Apache 2.0, meaning you are pretty much free to use it however you want in whatever way.
Usage
Configuration used : logstash agent -e "filter { rancher_metadata {} }"
Filter parameters
name | default value | comment |
---|---|---|
api_url |
[] |
Rancher Metadata API URL |
field_docker_id |
'container_id' |
The docker container ID message field |
cache_size |
100 |
Developing
1. Plugin Developement and Testing
Code
-
To get started, you'll need JRuby with the Bundler gem installed.
-
Install dependencies
bundle install
Test
There are no tests units.
Build gem
gem build logstash-filter-rancher_metadata.gemspec
2. Running your unpublished Plugin in Logstash
2.1 Run in a local Logstash clone
- Edit Logstash
Gemfile
and add the local plugin path, for example:
gem "logstash-filter-rancher_metadata", :path => "/your/local/logstash-filter-rancher_metadata"
- Install plugin
bin/plugin install --no-verify
- Run Logstash with your plugin
bin/logstash -e 'filter { rancher_metadata {} }'
At this point any modifications to the plugin code will be applied to this local Logstash setup. After modifying the plugin, simply rerun Logstash.
2.2 Run in an installed Logstash
You can use the same 2.1 method to run your plugin in an installed Logstash by editing its Gemfile
and pointing the :path
to your local plugin development directory or you can build the gem and install it using:
- Build your plugin gem
gem build logstash-filter-rancher_metadata.gemspec
- Install the plugin from the Logstash home
bin/plugin install /your/local/plugin/logstash-filter-rancher_metadata.gem
- Start Logstash and proceed to test the plugin
Contributing
All contributions are welcome: ideas, patches, documentation, bug reports, complaints, and even something you drew up on a napkin.
Programming is not a required skill. Whatever you've seen about open source and maintainers or community members saying "send patches or die" - you will not see that here.
It is more important to the community that you are able to contribute.
For more information about contributing, see the CONTRIBUTING file.
Author
Matteo Cerutti - matteo.cerutti@hotmail.co.uk