LogDNA-LogStash Plugin

This is a WIP/POC LogDNA plugin for Logstash, based on a clone of logstash-output-http v5.2.5 (the master as of 2021-09-20).

It is fully free and fully open source. The license is MIT, meaning you are pretty much free to use and contribute to it however you want in whatever way.

Plugin installation

The following commands need to be executed on your Logstash machine.

Clone and build:

git clone https://github.com/logdna/logstash-output-logdna.git
cd logstash-output-logdna.git
gem build logstash-output-logdna.gemspec

Install Logstash plugin: (path is a placeholder which needs to be modified to your logstash plugin path)

sudo logstash-plugin install path/logstash-output-logdna-0.1.7.gem

Configuration Example.

Note that api_key and hostname are required fields. The rest optional. For event data like app, these are the default values to use.

In case api_key is dynamic to support for multiple customer. Add dynamic api_key to [@metadata][logdna][api_key]. Check test.logstash-output-logdna.conf for more information.

If your data is already formatted to JSON, change the "format" from plain/text to application/json

output{
    logdna {
        api_key => "LOGDNA_API_KEY"
        app => "APP_NAME"
        hostname => "HOSTNAME"
        env => "ENV"
        ip => "IP"
        mac => "MAC"
        tags => "TAG1,TAG2"
        format => "plain/text"
        automatic_retries => 3
    }
}

LogStash-based documentation

Logstash provides infrastructure to automatically generate documentation for this plugin. We use the asciidoc format to write documentation so any comments in the source code will be first converted into asciidoc and then into html. All plugin documentation are placed under one central location.

For formatting code or config example, you can use the asciidoc [source,ruby] directive
For more asciidoc formatting tips, see the excellent reference here https://github.com/elastic/docs#asciidoc-guide

Need Help?

Need help? Try #logstash on freenode IRC or the https://discuss.elastic.co/c/logstash discussion forum.

Developing

1. Plugin Developement and Testing

Code

To get started, you'll need JRuby with the Bundler gem installed.
Create a new plugin or clone and existing from the GitHub logstash-plugins organization. We also provide example plugins.
Install dependencies

bundle install

Test

Update your dependencies

bundle install

Run tests

bundle exec rspec

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 Running your unpublished Plugin in Logstash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-awesome", :path => "/your/local/logstash-filter-awesome"

Install plugin

# Logstash 2.3 and higher
bin/logstash-plugin install --no-verify

# Prior to Logstash 2.3
bin/plugin install --no-verify

Run Logstash with your plugin

bin/logstash -e 'filter {awesome {}}'

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-output-logdna.gemspec

Install the plugin from the Logstash home

# Logstash 2.3 and higher
bin/logstash-plugin install --no-verify

# Prior to Logstash 2.3
bin/plugin install --no-verify

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.

ricardolupo/logstash-output-logdna