Logstash has a rich collection of input, filter, codec, and output plugins. Plugins are available as self-contained packages called gems, and are hosted on RubyGems.org. By default, as part of the Logstash distribution, many common plugins are available out of the box. You can verify the list of plugins that are part of the current installation by executing the following command:
E:logstash-7.0.0in>logstash-plugin list
By passing the --verbose flag to the preceding command, you can find out the version information of each plugin.
Using the --group flag, followed by either input, filter, output, or codec, you can find the list of installed input, filters, output, codecs, and plugins, respectively. For example:
E:logstash-7.0.0in>logstash-plugin list --group filter
You can list all the plugins containing a name fragment by passing the name fragment to logstash-plugin list. For example:
E:logstash-7.0.0in>logstash-plugin list 'pager'
In the preceding example commands, E:logstash-7.0.0in> refers to the LOGSTASH_HOMEin directory on your machine.