I had a few random ideas that popped into my head, and one of them was a plugin to install plugins. That requires a forum rebuild. Is there a way to rebuild using Ruby? I really don’t want to try: p `cd ../../` p `. /launcher rebuild app`

In a standard install, Discourse (and therefore, plugins) are running inside a docker container. That container does not have complete access to the host filesystem, so it can’t access the host’s /var/discourse directory to modify app.yml or run launcher. And even if it could… there’s a bit of a circular dependency here. Running ./launcher rebuild would kill the docker container… which would kill the launcher rebuild which you started from the plugin :boom: There are potential solutions here. e.g. adding additional docker volume mounts, so that the config/launcher can be accessed from within the container. But it’s not trivial. IIRC someone once made a ‘plugin manager’ plugin… which required some tweaks to the app.yml to add things like the volume mount. But I can’t find any topics about it now, so I assume it’s no longer maintained. Perhaps someone else can share a link if they can find it? (or maybe it was all a dream :sweat_smile:) On the CDCK side, we definitely err towards using themes when we want customers to be able to install/update/uninstall at will. Allowing people to arbitrarily install plugins isn’t an option, because that would affect other customers running on the same server.

[image] David Taylor: Perhaps someone else can share a link if they can find it? (or maybe it was all a dream :sweat_smile:) Yep, here it is: [image] ProCourse Installer Plugin This plugin is designed to make it extremely easy to install new plugins without logging into the server. It adds a screen under /admin/plugins/procourse-installer that looks like this: [image] From there, you can enter the URL (with or without .git) of the plugin git repo and click Install Plugin. Wait a few minutes (about 5 minutes) for the installation to complete and you’re good to go. To see all the plugins you’ve installed through the installer or to remove a plugin, just go to Install…

[image] David Taylor: That container does not have complete access to the host filesystem, so it can’t access the host’s /var/discourse directory to modify app.yml or run launcher. Hmm… I see. [image] David Taylor: Running ./launcher rebuild would kill the docker container… which would kill the launcher rebuild which you started from the plugin :boom: Oh, whoops, I didn’t think of that!

Dashboard.literatecomputing.com will install and remove plugins by editing the app.yml (or web_only.yml) and doing the rebuild (actually, bootstrap, destroy, rebuild). On a two container install, the downtime is minimal. It also does stuff like upgrade docker, and postgres, docker prune, and so on. Since it’s all managing a standard install, you’re not tied in to it, and it can’t break anything unless it’s actually doing something (like installing a bad plugin). It’s a (private) discourse plugin that drives an ansible playbook. You can join the free trial group and use it for free (with limited support).

This plugin seems to just clone the repository into the /plugins directory. Interesting.

[image] Nate Dhaliwal: Is there a way to rebuild using Ruby? You can do something like this inside the container to add a plugin to an existing container: cd /var/www/discourse/plugins git clone my-plugin-url rake db:migrate assets:precompile sv restart unicorn But the problems of keeping the plugins in the container and in the app.yml for when you rebuild next are there. I’ve been burned a number of times doing a ./launcher destroy app;./launcher start app to apply new ENV variables from app.yml only to find that the “new” container is behind the version that the database is. It’s even worse if someone has upgrade only some plugins in the container that worked with the version of Discourse that was in the old container, but not with the one that you get when you rebuild. . .

So that’s why the ProCouese plugin only cloned the repositories, and can only be removed via that plugin page to rm -rf the vloned plugin folder.

[image] Nate Dhaliwal: Yep, here it is: It actually worked quite decently as a proof of concept. It could use some tweaks though as it was said it could make troubleshooting more difficult. So maybe need some command line info how to access the procouree installer. Maybe better log file. The plus though is you can disable all plugins simply by removing l/commenting out pro course installer. Though it is broken now. Joe has some very forward ideas. Iirc he made the initial Post Voting plugin?

Rebuild the forum using code?

Development

Arkshine February 14, 2025, 5:34am 7

ProCourse Installer was amazing! It’s too bad it created issues for some plugins.

Topic		Replies	Views
Ability to install and uninstall plugins directly from Admin GUI Feature	15	2065	September 20, 2020
How to install a plugin without rebuilding (or set a maintainance message) Product Support	10	3670	July 22, 2020
What happens next? Self-hosting	9	395	July 16, 2025
Unable to rebuild app after installing these plugins Self-hosting unsupported-install	6	1081	July 17, 2024
General plugin questions Self-hosting	4	524	May 7, 2020

Rebuild the forum using code?

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