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nixos/ssh: Make ~/.ssh/authorized_keys optional in AuthorizedKeysFiles (#279894)

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nicoo 2024-05-06 01:11:03 +00:00 committed by GitHub
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2 changed files with 23 additions and 1 deletions
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11
nixos/doc/manual/release-notes/rl-2405.section.md
View file

@ -533,6 +533,17 @@ The pre-existing [services.ankisyncd](#opt-services.ankisyncd.enable) has been m
- `services.postgresql.extraPlugins` changed its type from just a list of packages to also a function that returns such a list.
For example a config line like ``services.postgresql.extraPlugins = with pkgs.postgresql_11.pkgs; [ postgis ];`` is recommended to be changed to ``services.postgresql.extraPlugins = ps: with ps; [ postgis ];``;
- `services.openssh` now has an option `authorizedKeysInHomedir`, controlling whether `~/.ssh/authorizedKeys` is
added to `authorizedKeysFiles`.
::: {.note}
This option currently defaults to `true` for NixOS 24.05, preserving the previous behaviour.
This is expected to change in NixOS 24.11.
:::
::: {.warning}
Users should check that their SSH keys are in `users.users.*.openssh`, or that they have another way to access
and administer the system, before setting this option to `false`.
:::
- [`matrix-synapse`](https://element-hq.github.io/synapse/) homeserver module now supports configuring UNIX domain socket [`listeners`](#opt-services.matrix-synapse.settings.listeners) through the `path` option.
The default replication worker on the main instance has been migrated away from TCP sockets to UNIX domain sockets.

13
nixos/modules/services/networking/ssh/sshd.nix
View file

@ -296,6 +296,17 @@ in
'';
};
authorizedKeysInHomedir = mkOption {
type = types.bool;
default = true;
description = ''
Enables the use of the `~/.ssh/authorized_keys` file.
Otherwise, the only files trusted by default are those in `/etc/ssh/authorized_keys.d`,
*i.e.* SSH keys from [](#opt-users.users._name_.openssh.authorizedKeys.keys).
'';
};
authorizedKeysCommand = mkOption {
type = types.str;
default = "none";
@ -635,7 +646,7 @@ in
# https://github.com/NixOS/nixpkgs/pull/10155
# https://github.com/NixOS/nixpkgs/pull/41745
services.openssh.authorizedKeysFiles =
[ "%h/.ssh/authorized_keys" "/etc/ssh/authorized_keys.d/%u" ];
lib.optional cfg.authorizedKeysInHomedir "%h/.ssh/authorized_keys" ++ [ "/etc/ssh/authorized_keys.d/%u" ];
services.openssh.settings.AuthorizedPrincipalsFile = mkIf (authPrincipalsFiles != {}) "/etc/ssh/authorized_principals.d/%u";