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docs: add workaround to use unix sockets with the nixos module

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emily 2024-11-20 16:29:42 +01:00 committed by June 🍓🦴
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26
docs/deploying/nixos.md
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@ -55,15 +55,31 @@ appropriately to use conduwuit instead of Conduit.
### UNIX sockets
Due to the lack of a conduwuit NixOS module, when using the `services.matrix-conduit` module
it is not possible to use UNIX sockets. This is because the UNIX socket option does not exist
in Conduit, and their module forces listening on `[::1]:6167` by default if unspecified.
a workaround like the one below is necessary to use UNIX sockets. This is because the UNIX
socket option does not exist in Conduit, and the module forcibly sets the `address` and
`port` config options.
```nix
options.services.matrix-conduit.settings = lib.mkOption {
apply = old: old // (
if (old.global ? "unix_socket_path")
then { global = builtins.removeAttrs old.global [ "address" "port" ]; }
else { }
);
};
```
Additionally, the [`matrix-conduit` systemd unit][systemd-unit] in the module does not allow
the `AF_UNIX` socket address family in their systemd unit's `RestrictAddressFamilies=` which
disallows the namespace from accessing or creating UNIX sockets.
disallows the namespace from accessing or creating UNIX sockets and has to be enabled like so:
There is no known workaround these. A conduwuit NixOS configuration module must be developed and
published by the community.
```nix
systemd.services.conduit.serviceConfig.RestrictAddressFamilies = [ "AF_UNIX" ];
```
Even though those workarounds are feasible a conduwuit NixOS configuration module, developed and
published by the community, would be appreciated.
### jemalloc and hardened profile