mirror of
https://github.com/wezm/wezm.net.git
synced 2024-11-18 21:02:46 +00:00
73 lines
2.7 KiB
Markdown
73 lines
2.7 KiB
Markdown
+++
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title = "Australian Chimera Linux Mirror"
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date = 2024-08-25T09:17:27+10:00
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#[extra]
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#updated = 2024-06-06T08:24:45+10:00
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+++
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I have set up a mirror of
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[repo.chimeralinux.org](https://repo.chimera-linux.org/) on a server in
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Australia (Brisbane). It's been running well for a couple of weeks now. The
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[root of the mirror][mirror] shows an index of what is hosted and when it was
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last synced. [/chimera] is where the Chimera data lives.
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It mirrors the packages as well as ISO and rootfs downloads. Using the mirror
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greatly speeds up package downloads, which in-turn makes things like `apk
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upgrade` a lot faster. Some rudimentary testing suggests this this server may
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also provide a speed improvement for folks in parts of Asia too.
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<!-- more -->
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### How to Use the Mirror
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#### Packages
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Edit the files in `/etc/apk/repositories.d/` to point to the mirror. For example
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`/etc/apk/repositories.d/00-repo-main.list` contains this by default:
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```
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https://repo.chimera-linux.org/current/main
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```
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Change that to:
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```
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https://au.mirror.7bit.org/chimera/current/main
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```
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I.e. replace `repo.chimera-linux.org` with `au.mirror.7bit.org/chimera`.
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#### Downloads
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For ISOs and rootfs images visit: <https://au.mirror.7bit.org/chimera/live/latest/>.
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### Building and Running the Mirror
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I set up a new server with [BinaryLane] in Brisbane and installed Chimera Linux
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on it—yes the mirror is hosted with Chimera. Specifically I installed the
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[base-minimal] package set to keep the package count low. On top of that I
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installed `nginx` to serve the data and [Lego] (which I added to cports) to
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manage TLS certificates from Let's Encrypt.
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To limit access and avoid the use of `root` there are dedicated regular users
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for syncing, `lego`, `nginx`, and `www-data`. To allow `lego` to restart
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`nginx` when certificates are updated I use a [doas] rule.
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Synchronisation is triggered hourly by a cron job. I use the [atomic-rsync]
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script to make updates atomic. The script manages a pair of directories
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`chimera-1` and `chimera-2`. The active one is symlinked to `chimera`. The
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script syncs into the inactive directory, creating hard links for unchanged
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data, then flips the symlink at the end.
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After syncing, the current date is written to a file, which is used by a small
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snippet of JavaScript on [the index page][mirror] to show when the data was
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last synced.
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[mirror]: https://au.mirror.7bit.org/
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[/chimera]: https://au.mirror.7bit.org/chimera/
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[BinaryLane]: https://www.binarylane.com.au/
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[base-minimal]: https://pkgs.chimera-linux.org/package/current/main/x86_64/base-minimal
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[atomic-rsync]: https://github.com/RsyncProject/rsync/blob/9615a2492bbf96bc145e738ebff55bbb91e0bbee/support/atomic-rsync
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[Lego]: https://go-acme.github.io/lego/
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[doas]: https://github.com/Duncaen/OpenDoas
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