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added retention to podman-postgresql backup

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This commit is contained in:
mc-fucker 2023-07-12 17:18:18 +02:00
parent 7593d9efc8
commit 529656f317
1 changed files with 12 additions and 1 deletions
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13
modules/podman-postgresql.nix
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@ -61,6 +61,13 @@ in
example = "daily";
};
backupRetention = mkOption {
description = "The amount of backups to keep.";
type = types.int;
default = 28;
example = "2";
};
};
}));
};
@ -101,7 +108,11 @@ in
description = "Backup of ${cfg.database} database";
requisite = [ "podman-postgresql-${cfg.database}.service" ];
serviceConfig = {
ExecStart = "${pkgs.bash}/bin/bash -c '${pkgs.podman}/bin/podman exec postgresql-${cfg.database} pg_dumpall -c -U ${cfg.user} | ${pkgs.zstd}/bin/zstd -o ${cfg.backupPath}/${cfg.database}/\$(${pkgs.coreutils}/bin/date +%%F_%%R).sql.zst'" ;
ExecStart =
let
retention = (toString cfg.backupRetention);
in
"${pkgs.bash}/bin/bash -c '${pkgs.podman}/bin/podman exec postgresql-${cfg.database} pg_dumpall -c -U ${cfg.user} | ${pkgs.zstd}/bin/zstd -o ${cfg.backupPath}/${cfg.database}/\$(${pkgs.coreutils}/bin/date +%%F_%%R).sql.zst && find ${cfg.backupPath}/${cfg.database} -type f | sort | head -n -${retention} | xargs rm -v'" ;
Type = "oneshot";
};
};