nixos/mysql: turn ExecStartPost into a shell script and simplify code
This commit is contained in:
Aaron Andersen
parent
76a50f0f85
commit
e0590da813
1 changed files with 89 additions and 90 deletions
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@ -317,104 +317,103 @@ in
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RuntimeDirectoryMode = "0755";
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RuntimeDirectoryMode = "0755";
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# The last two environment variables are used for starting Galera clusters
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# The last two environment variables are used for starting Galera clusters
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ExecStart = "${mysql}/bin/mysqld --defaults-file=/etc/my.cnf ${mysqldOptions} $_WSREP_NEW_CLUSTER $_WSREP_START_POSITION";
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ExecStart = "${mysql}/bin/mysqld --defaults-file=/etc/my.cnf ${mysqldOptions} $_WSREP_NEW_CLUSTER $_WSREP_START_POSITION";
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};
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ExecStartPost =
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let
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setupScript = pkgs.writeShellScript "mysql-setup" ''
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${optionalString (!hasNotify) ''
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# Wait until the MySQL server is available for use
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count=0
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while [ ! -e /run/mysqld/mysqld.sock ]
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do
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if [ $count -eq 30 ]
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then
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echo "Tried 30 times, giving up..."
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exit 1
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fi
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postStart =
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echo "MySQL daemon not yet started. Waiting for 1 second..."
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let
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count=$((count++))
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cmdWatchForMysqlSocket = ''
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sleep 1
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# Wait until the MySQL server is available for use
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done
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count=0
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''}
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while [ ! -e /run/mysqld/mysqld.sock ]
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do
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if [ $count -eq 30 ]
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then
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echo "Tried 30 times, giving up..."
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exit 1
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fi
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echo "MySQL daemon not yet started. Waiting for 1 second..."
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if [ -f /tmp/mysql_init ]
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count=$((count++))
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then
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sleep 1
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${concatMapStrings (database: ''
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done
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# Create initial databases
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'';
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if ! test -e "${cfg.dataDir}/${database.name}"; then
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cmdInitialDatabases = concatMapStrings (database: ''
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echo "Creating initial database: ${database.name}"
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# Create initial databases
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( echo 'create database `${database.name}`;'
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if ! test -e "${cfg.dataDir}/${database.name}"; then
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echo "Creating initial database: ${database.name}"
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( echo 'create database `${database.name}`;'
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${optionalString (database.schema != null) ''
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${optionalString (database.schema != null) ''
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echo 'use `${database.name}`;'
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echo 'use `${database.name}`;'
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# TODO: this silently falls through if database.schema does not exist,
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# TODO: this silently falls through if database.schema does not exist,
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# we should catch this somehow and exit, but can't do it here because we're in a subshell.
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# we should catch this somehow and exit, but can't do it here because we're in a subshell.
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if [ -f "${database.schema}" ]
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if [ -f "${database.schema}" ]
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then
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then
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cat ${database.schema}
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cat ${database.schema}
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elif [ -d "${database.schema}" ]
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elif [ -d "${database.schema}" ]
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then
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then
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cat ${database.schema}/mysql-databases/*.sql
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cat ${database.schema}/mysql-databases/*.sql
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fi
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fi
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''}
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''}
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) | ${mysql}/bin/mysql -u root -N
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fi
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'') cfg.initialDatabases}
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${optionalString (cfg.replication.role == "master")
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''
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# Set up the replication master
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( echo "use mysql;"
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echo "CREATE USER '${cfg.replication.masterUser}'@'${cfg.replication.slaveHost}' IDENTIFIED WITH mysql_native_password;"
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echo "SET PASSWORD FOR '${cfg.replication.masterUser}'@'${cfg.replication.slaveHost}' = PASSWORD('${cfg.replication.masterPassword}');"
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echo "GRANT REPLICATION SLAVE ON *.* TO '${cfg.replication.masterUser}'@'${cfg.replication.slaveHost}';"
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) | ${mysql}/bin/mysql -u root -N
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''}
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${optionalString (cfg.replication.role == "slave")
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''
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# Set up the replication slave
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( echo "stop slave;"
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echo "change master to master_host='${cfg.replication.masterHost}', master_user='${cfg.replication.masterUser}', master_password='${cfg.replication.masterPassword}';"
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echo "start slave;"
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) | ${mysql}/bin/mysql -u root -N
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''}
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${optionalString (cfg.initialScript != null)
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''
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# Execute initial script
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# using toString to avoid copying the file to nix store if given as path instead of string,
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# as it might contain credentials
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cat ${toString cfg.initialScript} | ${mysql}/bin/mysql -u root -N
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''}
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rm /tmp/mysql_init
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fi
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${optionalString (cfg.ensureDatabases != []) ''
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(
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${concatMapStrings (database: ''
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echo "CREATE DATABASE IF NOT EXISTS \`${database}\`;"
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'') cfg.ensureDatabases}
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) | ${mysql}/bin/mysql -u root -N
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) | ${mysql}/bin/mysql -u root -N
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fi
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''}
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'') cfg.initialDatabases;
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in
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lib.optionalString (!hasNotify) cmdWatchForMysqlSocket + ''
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${concatMapStrings (user:
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if [ -f /tmp/mysql_init ]
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then
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${cmdInitialDatabases}
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${optionalString (cfg.replication.role == "master")
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''
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''
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# Set up the replication master
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( echo "CREATE USER IF NOT EXISTS '${user.name}'@'localhost' IDENTIFIED WITH ${if isMariaDB then "unix_socket" else "auth_socket"};"
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${concatStringsSep "\n" (mapAttrsToList (database: permission: ''
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( echo "use mysql;"
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echo "GRANT ${permission} ON ${database} TO '${user.name}'@'localhost';"
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echo "CREATE USER '${cfg.replication.masterUser}'@'${cfg.replication.slaveHost}' IDENTIFIED WITH mysql_native_password;"
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'') user.ensurePermissions)}
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echo "SET PASSWORD FOR '${cfg.replication.masterUser}'@'${cfg.replication.slaveHost}' = PASSWORD('${cfg.replication.masterPassword}');"
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echo "GRANT REPLICATION SLAVE ON *.* TO '${cfg.replication.masterUser}'@'${cfg.replication.slaveHost}';"
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) | ${mysql}/bin/mysql -u root -N
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) | ${mysql}/bin/mysql -u root -N
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''}
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'') cfg.ensureUsers}
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'';
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${optionalString (cfg.replication.role == "slave")
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in
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''
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setupScript;
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# Set up the replication slave
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};
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( echo "stop slave;"
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echo "change master to master_host='${cfg.replication.masterHost}', master_user='${cfg.replication.masterUser}', master_password='${cfg.replication.masterPassword}';"
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echo "start slave;"
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) | ${mysql}/bin/mysql -u root -N
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''}
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${optionalString (cfg.initialScript != null)
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''
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# Execute initial script
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# using toString to avoid copying the file to nix store if given as path instead of string,
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# as it might contain credentials
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cat ${toString cfg.initialScript} | ${mysql}/bin/mysql -u root -N
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''}
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rm /tmp/mysql_init
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fi
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${optionalString (cfg.ensureDatabases != []) ''
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(
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${concatMapStrings (database: ''
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echo "CREATE DATABASE IF NOT EXISTS \`${database}\`;"
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'') cfg.ensureDatabases}
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) | ${mysql}/bin/mysql -u root -N
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''}
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${concatMapStrings (user:
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''
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( echo "CREATE USER IF NOT EXISTS '${user.name}'@'localhost' IDENTIFIED WITH ${if isMariaDB then "unix_socket" else "auth_socket"};"
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${concatStringsSep "\n" (mapAttrsToList (database: permission: ''
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echo "GRANT ${permission} ON ${database} TO '${user.name}'@'localhost';"
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'') user.ensurePermissions)}
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) | ${mysql}/bin/mysql -u root -N
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'') cfg.ensureUsers}
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''; # */
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};
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};
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};
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};
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