nixpkgs/modules/services/backup/mysql-backup.nix
Rob Vermaas fe490f2edc * mysql-backup: option for which user to use for performing backups
svn path=/nixos/trunk/; revision=18942
2009-12-14 17:57:37 +00:00

72 lines
1.7 KiB
Nix

{pkgs, config, ...}:
let
inherit (pkgs.lib) mkOption mkIf singleton concatStrings;
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 = pkgs.stringsWithDeps.fullDepEntry ''
mkdir -m 0700 -p ${config.services.mysqlBackup.location}
chown ${config.services.mysqlBackup.user} ${config.services.mysqlBackup.location}
'' [ "stdio" "defaultPath" "systemConfig" "users" ];
};
}