diff options
Diffstat (limited to 'nixos/modules/tasks/auto-upgrade.nix')
-rw-r--r-- | nixos/modules/tasks/auto-upgrade.nix | 83 |
1 files changed, 71 insertions, 12 deletions
diff --git a/nixos/modules/tasks/auto-upgrade.nix b/nixos/modules/tasks/auto-upgrade.nix index b931b27ad8170..1404dcbaf7c0f 100644 --- a/nixos/modules/tasks/auto-upgrade.nix +++ b/nixos/modules/tasks/auto-upgrade.nix @@ -80,6 +80,7 @@ in { Reboot the system into the new generation instead of a switch if the new generation uses a different kernel, kernel modules or initrd than the booted system. + See <option>rebootWindow</option> for configuring the times at which a reboot is allowed. ''; }; @@ -96,6 +97,32 @@ in { ''; }; + rebootWindow = mkOption { + description = '' + Define a lower and upper time value (in HH:MM format) which + constitute a time window during which reboots are allowed after an upgrade. + This option only has an effect when <option>allowReboot</option> is enabled. + The default value of <literal>null</literal> means that reboots are allowed at any time. + ''; + default = null; + example = { lower = "01:00"; upper = "05:00"; }; + type = with types; nullOr (submodule { + options = { + lower = mkOption { + description = "Lower limit of the reboot window"; + type = types.strMatching "[[:digit:]]{2}:[[:digit:]]{2}"; + example = "01:00"; + }; + + upper = mkOption { + description = "Upper limit of the reboot window"; + type = types.strMatching "[[:digit:]]{2}:[[:digit:]]{2}"; + example = "05:00"; + }; + }; + }); + }; + }; }; @@ -110,12 +137,10 @@ in { }]; system.autoUpgrade.flags = (if cfg.flake == null then - [ "--no-build-output" ] ++ (if cfg.channel == null then - [ "--upgrade" ] - else [ + [ "--no-build-output" ] ++ optionals (cfg.channel != null) [ "-I" "nixpkgs=${cfg.channel}/nixexprs.tar.xz" - ]) + ] else [ "--flake ${cfg.flake}" ]); @@ -143,19 +168,52 @@ in { ]; script = let - nixos-rebuild = - "${config.system.build.nixos-rebuild}/bin/nixos-rebuild"; + nixos-rebuild = "${config.system.build.nixos-rebuild}/bin/nixos-rebuild"; + date = "${pkgs.coreutils}/bin/date"; + readlink = "${pkgs.coreutils}/bin/readlink"; + shutdown = "${pkgs.systemd}/bin/shutdown"; + upgradeFlag = optional (cfg.channel == null) "--upgrade"; in if cfg.allowReboot then '' - ${nixos-rebuild} boot ${toString cfg.flags} - booted="$(readlink /run/booted-system/{initrd,kernel,kernel-modules})" - built="$(readlink /nix/var/nix/profiles/system/{initrd,kernel,kernel-modules})" - if [ "$booted" = "$built" ]; then + ${nixos-rebuild} boot ${toString (cfg.flags ++ upgradeFlag)} + booted="$(${readlink} /run/booted-system/{initrd,kernel,kernel-modules})" + built="$(${readlink} /nix/var/nix/profiles/system/{initrd,kernel,kernel-modules})" + + ${optionalString (cfg.rebootWindow != null) '' + current_time="$(${date} +%H:%M)" + + lower="${cfg.rebootWindow.lower}" + upper="${cfg.rebootWindow.upper}" + + if [[ "''${lower}" < "''${upper}" ]]; then + if [[ "''${current_time}" > "''${lower}" ]] && \ + [[ "''${current_time}" < "''${upper}" ]]; then + do_reboot="true" + else + do_reboot="false" + fi + else + # lower > upper, so we are crossing midnight (e.g. lower=23h, upper=6h) + # we want to reboot if cur > 23h or cur < 6h + if [[ "''${current_time}" < "''${upper}" ]] || \ + [[ "''${current_time}" > "''${lower}" ]]; then + do_reboot="true" + else + do_reboot="false" + fi + fi + ''} + + if [ "''${booted}" = "''${built}" ]; then ${nixos-rebuild} switch ${toString cfg.flags} + ${optionalString (cfg.rebootWindow != null) '' + elif [ "''${do_reboot}" != true ]; then + echo "Outside of configured reboot window, skipping." + ''} else - /run/current-system/sw/bin/shutdown -r +1 + ${shutdown} -r +1 fi '' else '' - ${nixos-rebuild} switch ${toString cfg.flags} + ${nixos-rebuild} switch ${toString (cfg.flags ++ upgradeFlag)} ''; startAt = cfg.dates; @@ -167,3 +225,4 @@ in { }; } + |