Anything not in use by a running container is usually safe enough, as far as Discourse is concerned, because it’ll be re-downloaded and/or rebuilt when you do the needful. There’s not a huge pile of images there, though; it’s probably time for you to get a disk upgrade.
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So deleting discourse containers is always safe?
Not really. This is a tiny and very low activity forum that has hardly grown in the past months…
docker rmi 64d62a045a4e gives me
Error response from daemon: conflict: unable to delete 64d62a045a4e (cannot be forced) - image has dependent child images
Is there any way I can stop it from downloading the latest discourse base image every time I try to rebuild or start the app? I’d like it to just use the old one for now so that I can go to bed…
It only downloads it if it is not on local, we really only download an image once. We only bump the required image once every few months in launcher. There are ways to specify a base image BUT you do not want to do that for a rainbow of reasons.
3 Likes
Okay, so is there any way I can get rid of one of those images? I surely don’t need two base images?
How much disk space do you have?
Can you delete some backups?
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Sure…
Have you ran ./launcher cleanup it will purge all images not in use.
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$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 476M 0 476M 0% /dev
tmpfs 100M 8.9M 91M 9% /run
/dev/mapper/vg-lv_root 19G 14G 4.1G 77% /
tmpfs 497M 1.1M 496M 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 497M 0 497M 0% /sys/fs/cgroup
/dev/sda1 461M 160M 278M 37% /boot
tmpfs 100M 0 100M 0% /run/user/1000
Deleted them already.
Yes, I tried that. and I get
But when I try to rebuild or start the app, the base images that was presumably deleted by cleanup gets downloaded again and I’m back to where I started.
My suggestion here then if you are ULTRA tight on space is just to go nuclear and and start from scratch.
What is the output of docker ps, you basically need to kill your app container so you can free up the old base image.
$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
1fba0860cbc3 local_discourse/web_only "/sbin/boot" 5 months ago Up 29 minutes 0.0.0.0:80->80/tcp, 0.0.0.0:443->443/tcp web_only
aa6b422d88ca local_discourse/data "/sbin/boot" 8 months ago Up 29 minutes data
2940a1603151 local_discourse/mail-receiver "/sbin/boot" 8 months ago Up 29 minutes 0.0.0.0:25->25/tcp mail-receiver
What do you mean by that? Will I need a discourse backup? Cause I don’t have one…
docker rm -f aa6b422d88ca
docker rm -f 1fba0860cbc3
./launcher cleanup
./launcher rebuild data
./launcher rebuild web_only
But really the root cause here is that you are just way too tight on disk space. I would recommend doubling the size /dev/mappper/vg-lv_root
3 Likes
The last step (rebuild web_only) fails:
Bundle complete! 110 Gemfile dependencies, 201 gems now installed.
Gems in the group development were not installed.
Bundled gems are installed into `./vendor/bundle`
I, [2018-08-31T00:50:57.518677 #13] INFO -- : > cd /var/www/discourse && su discourse -c 'bundle exec rake db:migrate'
rake aborted!
Gem::LoadError: can't activate public_suffix-2.0.5, already activated public_suffix-3.0.2
/var/www/discourse/lib/plugin_gem.rb:18:in `load'
/var/www/discourse/lib/plugin/instance.rb:501:in `gem'
/var/www/discourse/plugins/discourse-sync-to-dropbox/plugin.rb:7:in `activate!'
/var/www/discourse/lib/plugin/instance.rb:431:in `instance_eval'
/var/www/discourse/lib/plugin/instance.rb:431:in `activate!'
lib/discourse.rb:164:in `block in activate_plugins!'
lib/discourse.rb:161:in `each'
lib/discourse.rb:161:in `activate_plugins!'
/var/www/discourse/config/application.rb:223:in `<class:Application>'
/var/www/discourse/config/application.rb:39:in `<module:Discourse>'
/var/www/discourse/config/application.rb:38:in `<top (required)>'
/var/www/discourse/Rakefile:5:in `require'
/var/www/discourse/Rakefile:5:in `<top (required)>'
/var/www/discourse/vendor/bundle/ruby/2.5.0/gems/rake-12.3.1/exe/rake:27:in `<top (required)>'
/usr/local/bin/bundle:23:in `load'
/usr/local/bin/bundle:23:in `<main>'
(See full trace by running task with --trace)
I, [2018-08-31T00:51:18.343389 #13] INFO -- : gem install geocoder -v 1.4.4 -i /var/www/discourse/plugins/discourse-locations/gems/2.5.1 --no-document --ignore-dependencies
Successfully installed geocoder-1.4.4
1 gem installed
gem install public_suffix -v 2.0.5 -i /var/www/discourse/plugins/discourse-sync-to-dropbox/gems/2.5.1 --no-document --ignore-dependencies
Successfully installed public_suffix-2.0.5
1 gem installed
FAILED
--------------------
Pups::ExecError: cd /var/www/discourse && su discourse -c 'bundle exec rake db:migrate' failed with return #<Process::Status: pid 507 exit 1>
Location of failure: /pups/lib/pups/exec_command.rb:112:in `spawn'
exec failed with the params {"cd"=>"$home", "hook"=>"bundle_exec", "cmd"=>["su discourse -c 'bundle install --deployment --verbose --without test --without development --retry 3 --jobs 4'", "su discourse -c 'bundle exec rake db:migrate'", "su discourse -c 'bundle exec rake assets:precompile'"]}
36b568dc13935b0491b99afd4763776899dad8d57a1df149633b9c7c02fd3c0b
** FAILED TO BOOTSTRAP ** please scroll up and look for earlier error messages, there may be more than one
Trying without the dropbox plugin now…
Hmmmm … are you on tests passed… stable or beta?
Also, remove discourse-sync-to-dropbox asap. It looks like it is not working at the moment.
3 Likes
Phew! After removing the dropbox plugin my site is finally back up and running. Thanks a lot to everyone for your support!
Since I never changed that, I guess I’m on tests-passed.
I guess you’re right, but how does that relate to discourse’s minimum requirements of 10 GB HDD?
10GB is ambitious and absolutely not the case if you are running seperate data and web containers.
4 Likes
Ah, I see. I don’t think that was mentioned anywhere. I’ll check tomorrow where that information might be usefully added.
However, the situation seems to look much brighter now:
$ df -h
Filesystem Size Used Avail Use% Mounted on
udev 476M 0 476M 0% /dev
tmpfs 100M 12M 88M 12% /run
/dev/mapper/vg-lv_root 19G 8.4G 9.0G 49% /
tmpfs 497M 1.4M 495M 1% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 497M 0 497M 0% /sys/fs/cgroup
/dev/sda1 461M 160M 278M 37% /boot
tmpfs 100M 0 100M 0% /run/user/1000
Not sure where all the space came from but it looks good, doesn’t it? Do you still think I need to upgrade the server?
The data container was using the old image, so you had a situation where:
“data container” was saying HEY I need the old Discourse base image
“web container” was saying I need the new image
Not sure where all the space came from but this is a chunk of it.
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How did that happen?
From my side, I can say that I started an update via /admin/upgrade which failed, presumably due to a lack of space. Since the website was down, I tried to rebuild via ssh and that’s when the whole misery started…
Regardless of this specific situation, I wonder if the web-updater could not handle lack of disk space better. Rather than crashing the site, could it not just exit before it’s too late?
Because you hadn’t upgraded the data container.
It could probably do a disk space check before it started, and refuse to proceed if there wasn’t enough space.
3 Likes
Another question:
Where did you get these IDs from: