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{ config, pkgs, lib, flakeInputs, utils, ... }:
with lib;
let
sshConfig = ''
Include /etc/ssh/ssh_config
ControlMaster auto
ControlPath /var/lib/borg/.borgssh-master-%r@%n:%p
ControlPersist yes
Host yggdrasil.borgbase
HostName nx69hpl8.repo.borgbase.com
User nx69hpl8
IdentityFile ${config.sops.secrets."append.borgbase".path}
IdentitiesOnly yes
BatchMode yes
ServerAliveInterval 10
ServerAliveCountMax 30
IPQoS cs1
'';
checkBorgUnit = {
serviceConfig = {
Type = "oneshot";
ExecStart = "${pkgs.borgbackup}/bin/borg ${utils.escapeSystemdExecArgs [
"--lock-wait" "3600"
"--log-json"
"--progress"
"check"
"--verify-data"
"--max-duration" "4500"
]} %I";
Environment = [
"BORG_BASE_DIR=/var/lib/borg"
"BORG_CONFIG_DIR=/var/lib/borg/config"
"BORG_CACHE_DIR=/var/lib/borg/cache"
"BORG_SECURITY_DIR=/var/lib/borg/security"
"BORG_KEYS_DIR=/var/lib/borg/keys"
"BORG_HOSTNAME_IS_UNIQUE=yes"
"BORG_RSH=\"${pkgs.openssh}/bin/ssh -F ${pkgs.writeText "config" sshConfig}\""
];
};
};
baseDir = "/srv/backup/borg";
in {
imports = with flakeInputs; [
prometheus-borg-exporter.nixosModules.default
];
config = {
services.borgsnap = {
enable = true;
target = "yggdrasil.borgbase:repo";
inherit sshConfig;
keyfile = config.sops.secrets."yggdrasil.borgkey".path;
};
services.copyborg.jotnar = {
from = "${baseDir}/jotnar";
to = "yggdrasil.borgbase:repo";
inherit sshConfig;
keyfile = config.sops.secrets."yggdrasil.borgkey".path;
timerOptions.timerConfig = {
OnCalendar = "*-*-* 00/4:00:00 Europe/Berlin";
};
};
services.borgbackup.repos = {
jotnar = {
path = "${baseDir}/jotnar";
authorizedKeysAppendOnly = let
dir = ./jotnar;
toAuthKey = fname: ftype: if ftype != "regular" || !(hasSuffix ".pub" fname) then null else builtins.readFile (dir + "/${fname}");
in filter (v: v != null) (mapAttrsToList toAuthKey (builtins.readDir dir));
};
"uniworx.de" = {
path = "${baseDir}/uniworx.de";
authorizedKeys = [
(builtins.readFile ./uniworx.de/root.pub)
];
authorizedKeysAppendOnly = [
(builtins.readFile ./uniworx.de/append.srv01.pub)
(builtins.readFile ./uniworx.de/append.srv02.pub)
];
};
};
services.prometheus-borg-exporter = {
enable = true;
gateway = "localhost:9091";
target = "yggdrasil.borgbase:repo";
inherit sshConfig;
keyfile = config.sops.secrets."yggdrasil.borgkey".path;
config = {
job = "yggdrasil.borgbase";
groups = [
{ regex = "(?P<prefix>yggdrasil\.(surtr|vidhar|niflheim\.ymir))\.(?P<target>.+)-[0-9]{4}-[0-9]{2}-[0-9]{2}T[0-9]{2}:[0-9]{2}:[0-9]{2}"; }
];
};
};
# systemd.services."check-borg@${utils.escapeSystemdPath "${baseDir}/jotnar"}" = checkBorgUnit;
# systemd.services."check-borg@${utils.escapeSystemdPath "yggdrasil.borgbase:repo"}" = recursiveUpdate checkBorgUnit {
# serviceConfig = {
# Environment = checkBorgUnit.serviceConfig.Environment ++ [
# "BORG_KEY_FILE=${config.sops.secrets."yggdrasil.borgkey".path}"
# ];
# };
# };
# systemd.timers."check-borg@${utils.escapeSystemdPath "${baseDir}/jotnar"}" = {
# wantedBy = [ "timers.target" ];
# timerConfig = {
# OnCalendar = "*-*-* 00:30:00 UTC";
# };
# };
# systemd.timers."check-borg@${utils.escapeSystemdPath "yggdrasil.borgbase:repo"}" = {
# wantedBy = [ "timers.target" ];
# timerConfig = {
# OnCalendar = "*-*-* 00:30:00 UTC";
# };
# };
boot.postBootCommands = mkBefore ''
${pkgs.findutils}/bin/find ${baseDir} -type d -empty -delete
'';
users.users.borg.extraGroups = ["ssh"];
services.openssh.extraConfig = ''
Match User borg
ClientAliveInterval 10
ClientAliveCountMax 30
Match All
'';
sops.secrets."append.borgbase" = {
format = "binary";
sopsFile = ./append.borgbase;
owner = "borg";
group = "borg";
mode = "0400";
};
sops.secrets."yggdrasil.borgkey" = {
format = "binary";
sopsFile = ./yggdrasil.borgkey;
owner = "borg";
group = "borg";
mode = "0400";
};
};
}
|
