nixfleet/modules/restic/default.nix

45 lines
1.5 KiB
Nix

{
config,
pkgs,
lib,
...
}: {
options.backup = {
paths = lib.mkOption {
type = lib.types.listOf lib.types.path;
default = [];
};
};
config.services.restic = {
backups = {
hetzner = {
paths = config.backup.paths;
passwordFile = config.age.secrets.restic-hetzner-password.path;
extraOptions = [
# Use the host ssh key, for authorizing new hosts:
# cat /etc/ssh/ssh_host_ed25519_key.pub | ssh -p23 u382036-sub1@u382036-sub1.your-storagebox.de install-ssh-key
"sftp.command='ssh -p23 u382036-sub1@u382036-sub1.your-storagebox.de -i /etc/ssh/ssh_host_ed25519_key -s sftp'"
];
repository = "sftp://u382036-sub1@u382036-sub1.your-storagebox.de:23/";
initialize = true;
timerConfig.OnCalendar = "daily";
timerConfig.RandomizedDelaySec = "1h";
};
};
};
config.environment.systemPackages = builtins.map (path:
pkgs.writeShellApplication {
name = "restic-restore-${builtins.replaceStrings ["/"] ["-"] path}";
runtimeInputs = with pkgs; [restic];
text = ''
restic -r ${config.services.restic.backups.hetzner.repository} \
${lib.concatMapStringsSep ''\'' (option: "-o ${option}") config.services.restic.backups.hetzner.extraOptions} \
--password-file ${config.services.restic.backups.hetzner.passwordFile} \
restore latest \
--path "${path}"\
--target "$1"
'';
})
config.services.restic.backups.hetzner.paths;
}