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Refactor the restic config

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SebastianStork 2025-06-07 00:20:18 +02:00
parent b1507caac5
commit 41cd9f56f1
8 changed files with 143 additions and 111 deletions
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2
modules/system/services/actualbudget/backups.nix
View file

@ -28,7 +28,7 @@ in
'';
};
custom.services.resticBackup.actual = {
custom.services.resticBackups.actual = {
inherit user;
healthchecks.enable = true;

2
modules/system/services/forgejo/backups.nix
View file

@ -28,7 +28,7 @@ in
'';
};
custom.services.resticBackup.forgejo = {
custom.services.resticBackups.forgejo = {
inherit user;
healthchecks.enable = true;

2
modules/system/services/hedgedoc/backups.nix
View file

@ -28,7 +28,7 @@ in
'';
};
custom.services.resticBackup.hedgedoc = {
custom.services.resticBackups.hedgedoc = {
inherit user;
healthchecks.enable = true;

2
modules/system/services/nextcloud/backups.nix
View file

@ -14,7 +14,7 @@ in
options.custom.services.nextcloud.backups.enable = lib.mkEnableOption "";
config = lib.mkIf cfg.backups.enable {
custom.services.resticBackup.nextcloud = {
custom.services.resticBackups.nextcloud = {
inherit user;
healthchecks.enable = true;

106
modules/system/services/restic-backup.nix
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@ -1,106 +0,0 @@
{
config,
pkgs,
lib,
...
}:
let
backupServices = lib.filterAttrs (_: value: value.enable) config.custom.services.resticBackup;
healthchecksEnable = (lib.filterAttrs (_: value: value.healthchecks.enable) backupServices) != { };
in
{
options.custom.services.resticBackup = lib.mkOption {
type = lib.types.attrsOf (
lib.types.submodule {
options = {
enable = lib.mkEnableOption "" // {
default = true;
};
user = lib.mkOption {
type = lib.types.str;
default = config.users.users.root.name;
};
healthchecks.enable = lib.mkEnableOption "";
extraConfig = lib.mkOption {
type = lib.types.attrsOf lib.types.anything;
default = { };
};
};
}
);
default = { };
};
config = lib.mkIf (backupServices != { }) {
users.groups.backup.members = builtins.filter (user: user != config.users.users.root.name) (
lib.mapAttrsToList (_: value: value.user) backupServices
);
sops.secrets =
let
resticPermissions = {
mode = "440";
group = config.users.groups.backup.name;
};
in
{
"restic/environment" = resticPermissions;
"restic/password" = resticPermissions;
"healthchecks-ping-key" = lib.mkIf healthchecksEnable resticPermissions;
};
systemd.tmpfiles.rules = lib.mapAttrsToList (
name: value:
"d /var/cache/restic-backups-${name} 700 ${value.user} ${config.users.groups.backup.name} -"
) backupServices;
services.restic.backups = lib.mapAttrs (
name: value:
lib.mkMerge [
{
inherit (value) user;
initialize = true;
repository = "s3:https://s3.eu-central-003.backblazeb2.com/stork-atlas/${name}";
environmentFile = config.sops.secrets."restic/environment".path;
passwordFile = config.sops.secrets."restic/password".path;
pruneOpts = [
"--keep-daily 7"
"--keep-weekly 5"
"--keep-monthly 6"
"--keep-yearly 1"
];
timerConfig = {
OnCalendar = "03:00";
RandomizedDelaySec = "1h";
};
}
value.extraConfig
]
) backupServices;
systemd.services = lib.mkMerge [
(lib.mapAttrs' (
name: _:
lib.nameValuePair "restic-backups-${name}" {
wants = [ "healthcheck-ping@${name}-backup_start.service" ];
onSuccess = [ "healthcheck-ping@${name}-backup.service" ];
onFailure = [ "healthcheck-ping@${name}-backup_fail.service" ];
}
) (lib.filterAttrs (_: value: value.healthchecks.enable) backupServices))
(lib.mkIf healthchecksEnable {
"healthcheck-ping@" = {
description = "Pings healthcheck (%i)";
serviceConfig.Type = "oneshot";
scriptArgs = "%i";
script = ''
${lib.getExe pkgs.curl} --fail --silent --show-error --max-time 10 --retry 5 https://hc-ping.com/$(cat ${
config.sops.secrets."healthchecks-ping-key".path
})/$(echo $1 | tr _ /)
'';
};
})
];
};
}

81
modules/system/services/restic-backups/default.nix Normal file
View file

@ -0,0 +1,81 @@
{
config,
lib,
...
}:
let
resticBackups = lib.filterAttrs (_: value: value.enable) config.custom.services.resticBackups;
backupUsers = lib.mapAttrsToList (_: value: value.user) resticBackups;
in
{
options.custom.services.resticBackups = lib.mkOption {
type = lib.types.attrsOf (
lib.types.submodule {
options = {
enable = lib.mkEnableOption "" // {
default = true;
};
user = lib.mkOption {
type = lib.types.str;
default = config.users.users.root.name;
};
extraConfig = lib.mkOption {
type = lib.types.attrsOf lib.types.anything;
default = { };
};
};
}
);
default = { };
};
config = lib.mkIf (resticBackups != { }) {
assertions = [
{
assertion = lib.any (user: user != config.users.users.root.name) backupUsers;
message = "restic shouldn't be run as root";
}
];
users.groups.backup.members = backupUsers;
sops.secrets =
let
resticPermissions = {
mode = "440";
group = config.users.groups.backup.name;
};
in
{
"restic/environment" = resticPermissions;
"restic/password" = resticPermissions;
};
services.restic.backups =
resticBackups
|> lib.mapAttrs (
name: value:
lib.mkMerge [
{
inherit (value) user;
initialize = true;
repository = "s3:https://s3.eu-central-003.backblazeb2.com/stork-atlas/${name}";
environmentFile = config.sops.secrets."restic/environment".path;
passwordFile = config.sops.secrets."restic/password".path;
pruneOpts = [
"--keep-daily 7"
"--keep-weekly 5"
"--keep-monthly 6"
"--keep-yearly 1"
];
timerConfig = {
OnCalendar = "03:00";
RandomizedDelaySec = "1h";
};
}
value.extraConfig
]
);
};
}

57
modules/system/services/restic-backups/healthchecks.nix Normal file
View file

@ -0,0 +1,57 @@
{
config,
pkgs,
lib,
...
}:
let
inherit (config.custom.services) resticBackups;
backupsWithHealthchecks =
resticBackups
|> lib.filterAttrs (_: value: value.enable)
|> lib.filterAttrs (_: value: value.healthchecks.enable);
in
{
options.custom.services.resticBackups = lib.mkOption {
type = lib.types.attrsOf (
lib.types.submodule {
options.healthchecks.enable = lib.mkEnableOption "";
}
);
};
config = lib.mkIf (resticBackups != { }) {
sops.secrets."healthchecks-ping-key" = {
mode = "440";
group = config.users.groups.backup.name;
};
systemd.services = lib.mkMerge [
{
"healthcheck-ping@" = {
description = "Pings healthcheck (%i)";
serviceConfig.Type = "oneshot";
scriptArgs = "%i";
script = ''
${lib.getExe pkgs.curl} --fail --silent --show-error --max-time 10 --retry 5 https://hc-ping.com/$(cat ${
config.sops.secrets."healthchecks-ping-key".path
})/$(echo $1 | tr _ /)
'';
};
}
(
backupsWithHealthchecks
|> lib.mapAttrs' (
name: _:
lib.nameValuePair "restic-backups-${name}" {
wants = [ "healthcheck-ping@${name}-backup_start.service" ];
onSuccess = [ "healthcheck-ping@${name}-backup.service" ];
onFailure = [ "healthcheck-ping@${name}-backup_fail.service" ];
}
)
)
];
};
}

2
modules/system/services/syncthing/backups.nix
View file

@ -37,7 +37,7 @@ in
'';
};
custom.services.resticBackup.syncthing = {
custom.services.resticBackups.syncthing = {
inherit user;
healthchecks.enable = true;