81 lines
1.9 KiB
Nix
81 lines
1.9 KiB
Nix
{ config, pkgs, ... }:
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with pkgs.lib;
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let
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inherit (pkgs) mysql gzip;
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cfg = config.services.mysqlBackup ;
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location = cfg.location ;
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mysqlBackupCron = db : ''
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${cfg.period} ${cfg.user} ${mysql}/bin/mysqldump ${if cfg.singleTransaction then "--single-transaction" else ""} ${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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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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user = mkOption {
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default = "mysql";
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description = ''
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User to be used to perform backup.
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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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singleTransaction = mkOption {
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default = false;
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description = ''
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Whether to create database dump in a single transaction
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'';
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};
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};
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};
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config = mkIf config.services.mysqlBackup.enable {
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services.cron.systemCronJobs = map mysqlBackupCron config.services.mysqlBackup.databases;
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system.activationScripts.mysqlBackup = stringAfter [ "stdio" "defaultPath" "systemConfig" "users" ]
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''
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mkdir -m 0700 -p ${config.services.mysqlBackup.location}
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chown ${config.services.mysqlBackup.user} ${config.services.mysqlBackup.location}
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'';
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};
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}
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