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