nixpkgs-suyu/modules/services/backup/mysql-backup.nix
Eelco Dolstra f729f12e4e Some cleanups in the activation script:
* Moved some scriptlets to the appropriate modules.
* Put the scriptlet that sets the default path at the start, since it
  never makes sense not to have it there.  It no longer needs to be
  declared as a dependency.
* If a scriptlet has no dependencies, it can be denoted as a plain
  string (i.e., `noDepEntry' is not needed anymore).

svn path=/nixos/trunk/; revision=23762
2010-09-13 15:41:38 +00:00

74 lines
1.7 KiB
Nix

{ config, pkgs, ... }:
with pkgs.lib;
let
inherit (pkgs) mysql gzip;
location = config.services.mysqlBackup.location ;
mysqlBackupCron = db : ''
${config.services.mysqlBackup.period} ${config.services.mysqlBackup.user} ${mysql}/bin/mysqldump ${db} | ${gzip}/bin/gzip -c > ${location}/${db}.gz
'';
in
{
options = {
services.mysqlBackup = {
enable = mkOption {
default = false;
description = ''
Whether to enable MySQL backups.
'';
};
period = mkOption {
default = "15 01 * * *";
description = ''
This option defines (in the format used by cron) when the
databases should be dumped.
The default is to update at 01:15 (at night) every day.
'';
};
user = mkOption {
default = "mysql";
description = ''
User to be used to perform backup.
'';
};
databases = mkOption {
default = [];
description = ''
List of database names to dump.
'';
};
location = mkOption {
default = "/var/backup/mysql";
description = ''
Location to put the gzipped MySQL database dumps.
'';
};
};
};
config = mkIf config.services.mysqlBackup.enable {
services.cron.systemCronJobs = map mysqlBackupCron config.services.mysqlBackup.databases;
system.activationScripts.mysqlBackup = stringAfter [ "stdio" "defaultPath" "systemConfig" "users" ]
''
mkdir -m 0700 -p ${config.services.mysqlBackup.location}
chown ${config.services.mysqlBackup.user} ${config.services.mysqlBackup.location}
'';
};
}