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nixos/xandikos: use systemd socket activation #253634

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@schnusch schnusch commented Sep 6, 2023

Description of changes

Xandikos' handling of listening addresses is quite buggy. There were multiple bugs regarding socket activation, which caused it to also listen on unwanted default ports. Additionally the metrics port reuses the listen address.

To avoid all this unexpected behaviour we run Xandikos in a private network namespace and let systemd handle our wanted listening adresses. Optionally the metrics are made accessible in the host's network namespace through xandikos-metrics.service using systemd-socket-proxyd.

Depends on #253612.

Things done

  • Built on platform(s)
    • x86_64-linux
    • aarch64-linux
    • x86_64-darwin
    • aarch64-darwin
  • For non-Linux: Is sandbox = true set in nix.conf? (See Nix manual)
  • Tested, as applicable:
  • Tested compilation of all packages that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review rev HEAD". Note: all changes have to be committed, also see nixpkgs-review usage
  • Tested basic functionality of all binary files (usually in ./result/bin/)
  • 23.11 Release Notes (or backporting 23.05 Release notes)
    • (Package updates) Added a release notes entry if the change is major or breaking
    • (Module updates) Added a release notes entry if the change is significant
    • (Module addition) Added a release notes entry if adding a new NixOS module
  • Fits CONTRIBUTING.md.

@schnusch
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Rebased onto #253612.

@wegank wegank added the 2.status: stale https://github.com/NixOS/nixpkgs/blob/master/.github/STALE-BOT.md label Jul 4, 2024
@stale stale bot removed the 2.status: stale https://github.com/NixOS/nixpkgs/blob/master/.github/STALE-BOT.md label Aug 23, 2024
Xandikos' handling of listening addresses is quite buggy. There were multiple
bugs regarding socket activation, which caused it to also listen on unwanted
default ports. Additionally the metrics port reuses the listen address.

To avoid all this unexpected behaviour we run Xandikos in a private network
namespace and let systemd handle our *wanted* listening adresses. Optionally
the metrics are made accessible in the host's network namespace through
`xandikos-metrics.service` using systemd-socket-proxyd.
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