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121 lines
3.9 KiB
121 lines
3.9 KiB
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title = 'Mastodon snippets'
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date = '2023-04-09T15:58:46+0200'
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summary = 'Some "nice to have" snippets for maintaining a mastodon server'
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categories = [ 'computerstuff' ]
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tags = [ 'mastodon', 'server', 'linux', 'selfhost' ]
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+++
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Very short und maybe a bit chaotic...
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There are some [style patches](https://codeberg.org/dominic/mastodon-styles)
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available for plain mastodon for those that would want to have a look at them.
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## Clear media files
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<https://paste.opensuse.org/pastes/365542654a1e>
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```bash
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#!/bin/bash
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export PATH="$HOME/.rbenv/bin:$PATH"
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eval "$(rbenv init -)"
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export RAILS_ENV=production
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exec > /home/mastodon/live/log/prune.log 2>&1
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/home/mastodon/live/bin/tootctl statuses remove
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/home/mastodon/live/bin/tootctl media remove --days=5
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/home/mastodon/live/bin/tootctl media remove --prune-profiles --days=60
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/home/mastodon/live/bin/tootctl preview_cards remove --days=15
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/home/mastodon/live/bin/tootctl media remove-orphans
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/home/mastodon/live/bin/tootctl cache clear
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/home/mastodon/live/bin/tootctl media usage
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date
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```
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## Further removal of profile pics
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<https://paste.opensuse.org/pastes/4ecbf69cdee7>
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```bash
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#!/usr/bin/env bash
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# Kept only the accounts compression and jpeg optimization
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cd /home/mastodon/live/public/system/cache
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find -name '*.jpg' -print0 | xargs -0 jpegoptim --verbose --preserve --threshold=1 --max=45
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find -name '*.jpeg' -print0 | xargs -0 jpegoptim --verbose --preserve --threshold=1 --max=45
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cd /home/mastodon/live/public/system/cache/accounts
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find -name '*.png' -print0 | xargs -0 pngquant --verbose --ext=.png --force --speed 10 --quality 45-50 --skip-if-larger
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```
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## More snippets for use in the rails console
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_Some or almost all of the following text is copy&paste'd from [this issue]
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at Github._
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[this issue]: https://github.com/mastodon/mastodon/issues/14681
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There are several scripts executable with `RAILS_ENV=production bundle exec rails c`,
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for convenience laid out here with minor corrections. **Do not execute these
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without understanding what they do!**:
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Deleting all cached media attachments from external servers to allow web app
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to re-fetch them when they are queried. At least on my instance this is really
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slow, takes tens of seconds per attachment (is this the same as `tootctl media
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remove`?):
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```ruby
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MediaAttachment.cached.where.not(remote_url: '').each do |attachment|
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attachment.file.destroy
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attachment.thumbnail.destroy
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attachment.save
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end
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```
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Deleting and re-downloading all cached remote emojis. This apparently has a
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problem that the local URLs for the cached emojis change, and the URLs aren't
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updated to the fetched profile headers. I suppose this should be done before
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the next steps, assuming the cached local emoji URLs are set up correctly to
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the profile headers and names at the time of fetching. This doesn't seem to
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work though, maybe `tootctl emoji purge --remote-only` would be better:
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```ruby
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CustomEmoji.remote.where.not(image_file_name: nil).where.not(image_remote_url: '').each do |emoji|
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emoji.image.destroy
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emoji.image.save
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emoji.download_image!
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end
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```
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Deleting all remote profile avatars, and re-fetching them. Are these two the
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same as `tootctl accounts refresh --all`?:
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```ruby
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Account.remote.where.not(avatar_file_name: nil).where.not(avatar_remote_url: '').each do |a|
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a.avatar.destroy
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a.save
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a.download_avatar!
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end
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```
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Deleting all remote profile headers, and re-fetching them. Hopefully this
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uses/updates the newly fetched local cached emoji URLs, and also includes the
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profile name as they often contain emojis:
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```ruby
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Account.remote.where.not(header_file_name: nil).where.not(header_remote_url: '').each do |a|
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a.header.destroy
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a.save
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a.download_header!
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end
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```
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It would be awesome to get tooling for these to `tootctl`. That said, I'm not
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entirely sure if destroying the entities is necessary before downloading them
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again, and perhaps we could use `remove_entity_cache` instead. I'm not very well
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acquainted with the codebase.
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