no case clause matching: {:plugin_module_unloadable, 'prometheus_process_collector'

[zjyang861]

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[zjyang861]

** (CaseClauseError) no case clause matching: {:plugin_module_unloadable, 'prometheus_process_collector', {:error, :on_load_failure}}
(rabbitmqctl) lib/rabbitmq/cli/plugins/plugins_helpers.ex:218: RabbitMQ.CLI.Plugins.Helpers.update_enabled_plugins/2
(rabbitmqctl) lib/rabbitmq/cli/plugins/plugins_helpers.ex:115: RabbitMQ.CLI.Plugins.Helpers.update_enabled_plugins/4
(rabbitmqctl) lib/rabbitmq/cli/plugins/commands/enable_command.ex:104: anonymous fn/6 in RabbitMQ.CLI.Plugins.Commands.EnableCommand.do_run/2
(elixir) lib/stream.ex:1298: anonymous fn/2 in Stream.iterate/2
(elixir) lib/stream.ex:1482: Stream.do_unfold/4
(elixir) lib/stream.ex:1553: Enumerable.Stream.do_each/4
(elixir) lib/stream.ex:933: Stream.do_enum_transform/7
(elixir) lib/stream.ex:1553: Enumerable.Stream.do_each/4

[zjyang861]

I am getting this error when I enable the plugin, what is the problem?

[michaelklishin]

We cannot suggest much without knowing what RabbitMQ and Erlang versions are used.

[michaelklishin]

Also, you can pre-enabled plugins to compare.

My best guess is that you may have an old version of rabbitmq_prometheus (it used to be a community plugin) on the code path but try to use a modern version that ships with RabbitMQ on Erlang 25.

Erlang 25 won't be able to load modules compiled on Erlang 21 and older. That means most (if not all) older rabbitmq_prometheus releases.

[ikavgo]

Agree, to rebuild process collector, please clone it and run rebar3 archive - it will rebuild. then just copy the archive to usual plugins directory

[ikavgo]

BTW why you didn't migrate to built-in plugin? what's missing?

[michaelklishin]

Most likely the old plugin simply wasn't removed from the code path (e.g. the image deployed).