106 lines
2.1 KiB
Nix
106 lines
2.1 KiB
Nix
{pkgs, config, ...}:
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let
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inherit (pkgs.lib) mkOption mkIf singleton;
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cfg = config.services.mysql;
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mysql = pkgs.mysql;
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pidFile = "${cfg.pidDir}/mysqld.pid";
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mysqldOptions =
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"--user=${cfg.user} --datadir=${cfg.dataDir} " +
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"--log-error=${cfg.logError} --pid-file=${pidFile}";
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in
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{
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###### interface
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options = {
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services.mysql = {
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enable = mkOption {
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default = false;
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description = "
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Whether to enable the MySQL server.
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";
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};
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port = mkOption {
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default = "3306";
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description = "Port of MySQL";
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};
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user = mkOption {
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default = "mysql";
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description = "User account under which MySQL runs";
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};
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dataDir = mkOption {
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default = "/var/mysql"; # !!! should be /var/db/mysql
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description = "Location where MySQL stores its table files";
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};
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logError = mkOption {
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default = "/var/log/mysql_err.log";
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description = "Location of the MySQL error logfile";
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};
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pidDir = mkOption {
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default = "/var/run/mysql";
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description = "Location of the file which stores the PID of the MySQL server";
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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.mysql.enable {
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users.extraUsers = singleton
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{ name = "mysql";
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description = "MySQL server user";
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};
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environment.systemPackages = [mysql];
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jobs = singleton
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{ name = "mysql";
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description = "MySQL server";
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startOn = "filesystems";
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stopOn = "shutdown";
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preStart =
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''
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if ! test -e ${cfg.dataDir}/mysql; then
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mkdir -m 0700 -p ${cfg.dataDir}
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chown -R ${cfg.user} ${cfg.dataDir}
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${mysql}/bin/mysql_install_db ${mysqldOptions}
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fi
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mkdir -m 0700 -p ${cfg.pidDir}
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chown -R ${cfg.user} ${cfg.pidDir}
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'';
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exec = "${mysql}/bin/mysqld ${mysqldOptions}";
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postStop =
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''
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pid=$(cat ${pidFile})
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kill "$pid"
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${mysql}/bin/mysql_waitpid "$pid" 1000
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'';
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};
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};
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}
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