126 lines
3.9 KiB
Nix
126 lines
3.9 KiB
Nix
{ config, lib, ... }:
|
|
|
|
let
|
|
|
|
inherit (lib.attrsets) hasAttr;
|
|
inherit (lib.meta) getExe';
|
|
inherit (lib.modules) mkDefault mkIf;
|
|
inherit (lib.options) mkEnableOption mkOption;
|
|
inherit (lib.types) nonEmptyStr nullOr;
|
|
|
|
options.services.tsmBackup = {
|
|
enable = mkEnableOption ''
|
|
automatic backups with the
|
|
IBM Storage Protect (Tivoli Storage Manager, TSM) client.
|
|
This also enables
|
|
{option}`programs.tsmClient.enable`
|
|
'';
|
|
command = mkOption {
|
|
type = nonEmptyStr;
|
|
default = "backup";
|
|
example = "incr";
|
|
description = ''
|
|
The actual command passed to the
|
|
`dsmc` executable to start the backup.
|
|
'';
|
|
};
|
|
servername = mkOption {
|
|
type = nonEmptyStr;
|
|
example = "mainTsmServer";
|
|
description = ''
|
|
Create a systemd system service
|
|
`tsm-backup.service` that starts
|
|
a backup based on the given servername's stanza.
|
|
Note that this server's
|
|
{option}`passwdDir` will default to
|
|
{file}`/var/lib/tsm-backup/password`
|
|
(but may be overridden);
|
|
also, the service will use
|
|
{file}`/var/lib/tsm-backup` as
|
|
`HOME` when calling
|
|
`dsmc`.
|
|
'';
|
|
};
|
|
autoTime = mkOption {
|
|
type = nullOr nonEmptyStr;
|
|
default = null;
|
|
example = "12:00";
|
|
description = ''
|
|
The backup service will be invoked
|
|
automatically at the given date/time,
|
|
which must be in the format described in
|
|
{manpage}`systemd.time(5)`.
|
|
The default `null`
|
|
disables automatic backups.
|
|
'';
|
|
};
|
|
};
|
|
|
|
cfg = config.services.tsmBackup;
|
|
cfgPrg = config.programs.tsmClient;
|
|
|
|
assertions = [
|
|
{
|
|
assertion = hasAttr cfg.servername cfgPrg.servers;
|
|
message = "TSM service servername not found in list of servers";
|
|
}
|
|
{
|
|
assertion = cfgPrg.servers.${cfg.servername}.genPasswd;
|
|
message = "TSM service requires automatic password generation";
|
|
}
|
|
];
|
|
|
|
in
|
|
|
|
{
|
|
|
|
inherit options;
|
|
|
|
config = mkIf cfg.enable {
|
|
inherit assertions;
|
|
programs.tsmClient.enable = true;
|
|
programs.tsmClient.servers.${cfg.servername}.passworddir =
|
|
mkDefault "/var/lib/tsm-backup/password";
|
|
systemd.services.tsm-backup = {
|
|
description = "IBM Storage Protect (Tivoli Storage Manager) Backup";
|
|
# DSM_LOG needs a trailing slash to have it treated as a directory.
|
|
# `/var/log` would be littered with TSM log files otherwise.
|
|
environment.DSM_LOG = "/var/log/tsm-backup/";
|
|
# TSM needs a HOME dir to store certificates.
|
|
environment.HOME = "/var/lib/tsm-backup";
|
|
serviceConfig = {
|
|
# for exit status description see
|
|
# https://www.ibm.com/docs/en/storage-protect/8.1.22?topic=clients-client-return-codes
|
|
SuccessExitStatus = "4 8";
|
|
# The `-se` option must come after the command.
|
|
# The `-optfile` option suppresses a `dsm.opt`-not-found warning.
|
|
ExecStart =
|
|
"${getExe' cfgPrg.wrappedPackage "dsmc"} ${cfg.command} -se='${cfg.servername}' -optfile=/dev/null";
|
|
LogsDirectory = "tsm-backup";
|
|
StateDirectory = "tsm-backup";
|
|
StateDirectoryMode = "0750";
|
|
# systemd sandboxing
|
|
LockPersonality = true;
|
|
NoNewPrivileges = true;
|
|
PrivateDevices = true;
|
|
#PrivateTmp = true; # would break backup of {/var,}/tmp
|
|
#PrivateUsers = true; # would block backup of /home/*
|
|
ProtectClock = true;
|
|
ProtectControlGroups = true;
|
|
ProtectHome = "read-only";
|
|
ProtectHostname = true;
|
|
ProtectKernelLogs = true;
|
|
ProtectKernelModules = true;
|
|
ProtectKernelTunables = true;
|
|
ProtectProc = "noaccess";
|
|
ProtectSystem = "strict";
|
|
RestrictNamespaces = true;
|
|
RestrictSUIDSGID = true;
|
|
};
|
|
startAt = mkIf (cfg.autoTime!=null) cfg.autoTime;
|
|
};
|
|
};
|
|
|
|
meta.maintainers = [ lib.maintainers.yarny ];
|
|
|
|
}
|