On this system I have calyptia-fluentd, and I'm trying to develop a custom filter plugin.
To start, I've created a gem with some initial code, and I have installed this gem, and have created a config file with uses the plugin.
However, starting calyptia-fluentd on the command line (the environment is the one provided by the installer, not the generic Windows command prompt) gives me this:
C:\opt\calyptia-fluentd>calyptia-fluentd -vv
2022-08-11 16:24:23 +0200 [info]: fluent/log.rb:330:info: parsing config file is succeeded path="C:\\opt\\calyptia-fluentd\\bin\\\\..\\etc\\calyptia-fluentd\\calyptia-fluentd.conf"
2022-08-11 16:24:23 +0200 [info]: fluent/log.rb:330:info: gem 'fluentd' version '1.15.0'
2022-08-11 16:24:23 +0200 [info]: fluent/log.rb:330:info: gem 'fluent-plugin-calyptia-monitoring' version '0.1.3'
...
2022-08-11 16:24:23 +0200 [info]: fluent/log.rb:330:info: gem 'fluent-plugin-custom' version '0.0.3'
...
2022-08-11 16:24:23 +0200 [info]: fluent/log.rb:330:info: gem 'fluent-plugin-windows-eventlog' version '0.8.1'
2022-08-11 16:24:23 +0200 [error]: fluent/log.rb:372:error: config error file="C:\\opt\\calyptia-fluentd\\bin\\\\..\\etc\\calyptia-fluentd\\calyptia-fluentd.conf" error_class=Fluent::NotFoundPluginError error="Unknown filter plugin 'filter_custom'. Run 'gem search -rd fluent-plugin' to find plugins"
Note that it says it's loaded the fluent-plugin-custom gem, but then it bombs out with the "Unknown plugin" error.
The plugin code, placed in filter_custom.rb is:
module Fluent::Plugin
class CustomFilter < Filter
Fluent::Plugin.register_filter('custom', self)
# ...
def filter(tag, time, record)
record
end
# ...
end
end
I've also tried placing it in /etc/calyptia-fluentd/plugin on a Linux system, with the same problem.
How do I get Fluentd to use the new plugin?
Maybe it will save others time: the plugin code was correct, the gem was correctly installed, but what didn't work was the config file. It referenced filter_custom when it should have referenced just custom.