How to completely uninstall / remove a plugin

I only rebuild a few times per year. I am currently running into an issue with a plugin I do not want.

When I include the plugin repository in my app.yml file I can bootstrap but run into blank screens with the following errors:

When I comment out the plugin repository in app.yml I fail to bootstrap.

So my question is, how can I fully remove the plugin(s) and all of their remnants from my install as if it were never there in the first place?

Can you share the error in bootstrap when doing a rebuild without the plugin?

Here is the error when I try to bootstrap without the plugin.

FAILED
--------------------
Pups::ExecError: cd /var/www/discourse && su discourse -c 'bundle exec rake db:migrate' failed with return #     <Process::Status: pid 22379 exit 1>
Location of failure: /pups/lib/pups/exec_command.rb:108:in `spawn'
exec failed with the params {"cd"=>"$home", "hook"=>"bundle_exec", "cmd"=>["su discourse -c 'bundle install --   deployment --verbose --without test --without development'", "su discourse -c 'bundle exec rake db:migrate'", "su  discourse -c 'bundle exec rake assets:precompile'"]}`

And then scrolled up I get this:

I, [2017-01-01T23:52:03.038385 #15]  INFO -- : > cd /var/www/discourse && su discourse -c 'bundle exec rake db:migrate'
URGENT: type Failed to initialize site default
rake aborted!
ArgumentError: type

Handy with most things but I don’t know where to start with this because I bootstrap fine with the plugin.

Looks like df-core is the plugin at fault. Isn’t that one of the Discouse PRO plugins? It’s been a while since I looked at the code on those but if memory serves they contained db migrations. Not sure if that’s good or bad at the moment.

Is it possible that by removing the plugin (and thus removing the migrations) it’s throwing an error?

nobody knows how to just remove a plugin??

To remove a plugin, simply remove the - git clone https://github.com/... line from your app.yml file and rebuild your site via ./launcher rebuild app.

Would that method remove the entries the plugin would have created in the database, like tables or records?

Or when you uninstall a plugin garbage in the database would be left after it?

I did this method multiple times, the Fingerprint plugin will not uninstall even though it is not in my app.yml.

How to delete this anyway?

Did you rebuild after you edited your app.yml?

Did you clear you local cache?

Yes, I’ve had several rebuilds and changes since. I cleared my cache.

And you saved after you changed your app.yml :man_shrugging:

Ofcourse, otherwise plugins I installed after would not install, but they are :grinning:

In a support forum nothing is obvious :scream:

Para aqueles que administram o Discourse apenas ocasionalmente, para iniciantes ou, de modo geral, para economizar tempo, é mais útil ser o mais específico possível.

Neste caso específico, onde exatamente está o arquivo app.yml? Não vejo nenhum em /var/discourse, mas vejo um app-sparkpost.yml. Talvez seja o arquivo que criei há cerca de 5 anos ao implantar a instância; não tenho certeza. Esse é o caminho correto? Como o Discourse sabe ler este arquivo se não há um app.yml em /var/discourse?

Eu não esperaria encontrar arquivos YAML em /var/discourse em si, não. O caminho correto seria /var/discourse/containers. Eu creio que o Discourse lerá todos os arquivos no diretório containers, mas um engenheiro estará melhor equipado para responder a isso do que eu. Não acho que o nome realmente importe.

Acredito que o app.yml possa ser encontrado em /var/discourse/containers/app.yml. Você precisará editar esse arquivo e remover qualquer referência ao plugin. Você deverá conseguir localizar algo semelhante ao seguinte no arquivo:

## Plugins go here
## see https://meta.discourse.org/t/19157 for details
hooks:
  after_code:
    - exec:
        cd: $home/plugins
        cmd:
          - git clone https://github.com/discourse/docker_manager.git
          - git clone https://github.com/discourse/discourse-jwt.git
          - git clone https://github.com/zh99998/discourse-cross-origin.git

Cada uma das linhas de git clone ali refere-se a um plugin instalado na instância do Discourse. Após editar o arquivo, você precisará reconstruir sua aplicação Discourse. A partir da pasta /var/discourse, você pode executar ./launcher rebuild app para reconstruir sua aplicação Discourse.