Ejemplo n.º 1
0
 public function switchMaster($servers)
 {
     $this->view = false;
     $slave = $this->di['db']->sql(str_replace('-', '_', $servers[0]));
     $master = $this->di['db']->sql(str_replace('-', '_', $servers[1]));
     // first test that the master have log_slave_updates = ON
     $log_slave_updates = $master->getVariables("log_slave_updates");
     if ($log_slave_updates !== 'ON') {
         throw new \Exception("[ERROR] PMACLI-001 : log_slave_updates must be unabled on new master : '" . $servers[1] . "'");
     }
     $MS = new MasterSlave();
     $MS->setInstance($slave);
     $thread_slave = $MS->isSlave();
     $slave_master_host = array();
     if ($thread_slave) {
         foreach ($thread_slave as $thread) {
             $conn = empty($thread['Connection_name']) ? '' : " '" . $thread['Connection_name'] . "'";
             $slave_master_host[$thread['Master_Host']] = $conn;
         }
     } else {
         throw new \Exception("[ERROR] PMACLI-002 : the server should configured as slave : '" . $servers[0] . "'");
     }
     $MS->setInstance($master);
     $thread_master = $MS->isSlave();
     $master_master_host = array();
     if ($thread_master) {
         foreach ($thread_master as $thread) {
             $conn = empty($thread['Connection_name']) ? '' : " '" . $thread['Connection_name'] . "'";
             $master_master_host[$thread['Master_Host']] = $conn;
         }
     } else {
         throw new \Exception("[ERROR] PMACLI-002 : the server should configured as slave : '" . $servers[1] . "'");
     }
     $cmp = array_intersect_key($slave_master_host, $master_master_host);
     if (count($cmp) !== 1) {
         throw new \Exception("[ERROR] PMACLI-003 : the servers must have the same master");
     }
     $ip_of_master = array_keys($cmp)[0];
     //stop du slave
     $sql = "STOP SLAVE" . $slave_master_host[$ip_of_master] . ";";
     echo $servers[0] . "> " . $sql . "\n";
     $slave->sql_query($sql);
     $MS->setInstance($slave);
     $thread_slave = $MS->isSlave();
     foreach ($thread_slave as $thread) {
         if ($thread['Master_Host'] == $ip_of_master) {
             $SLAVE_MASTER_LOG_FILE = $thread['Master_Log_File'];
             $SLAVE_MASTER_LOG_POS = $thread['Exec_Master_Log_Pos'];
         }
     }
     sleep(1);
     //stop slave n°2 (future master)
     $sql = "STOP SLAVE" . $master_master_host[$ip_of_master] . ";";
     echo $servers[1] . "> " . $sql . "\n";
     $master->sql_query($sql);
     $MS->setInstance($master);
     $thread_master = $MS->isSlave();
     foreach ($thread_master as $thread) {
         if ($thread['Master_Host'] == $ip_of_master) {
             $MASTER_MASTER_LOG_FILE = $thread['Master_Log_File'];
             $MASTER_MASTER_LOG_POS = $thread['Exec_Master_Log_Pos'];
         }
     }
     if ($MASTER_MASTER_LOG_FILE !== $SLAVE_MASTER_LOG_FILE || $SLAVE_MASTER_LOG_POS > $MASTER_MASTER_LOG_POS) {
         throw new \Exception("[ERROR] PMACLI-005 : Error the new master is behind the slave");
     }
     $tab = new Table(1);
     $tab->addHeader(array("name", "IP", "port", "Connection_name", "Master_Log_File", "Master_Log_Pos"));
     $param['master'] = $master->getParams();
     $param['slave'] = $slave->getParams();
     $tab->addLine(array($servers[0], $param['slave']['hostname'], empty($param['slave']['port']) ? 3306 : $param['slave']['port'], $master_master_host[$ip_of_master], $SLAVE_MASTER_LOG_FILE, $SLAVE_MASTER_LOG_POS));
     $tab->addLine(array($servers[1], $param['master']['hostname'], empty($param['master']['port']) ? 3306 : $param['master']['port'], $slave_master_host[$ip_of_master], $MASTER_MASTER_LOG_FILE, $MASTER_MASTER_LOG_POS));
     $msg = $tab->display();
     echo $msg;
     $sql = "SHOW MASTER STATUS";
     echo $servers[1] . "> " . $sql . "\n";
     $MS->setInstance($master);
     $master_status = $MS->isMaster();
     $tab2 = new Table(1);
     $header = array();
     $var = array();
     foreach ($master_status as $key => $value) {
         $header[] = $key;
         $var[] = $value;
     }
     $master_file = $var[0];
     $master_position = $var[1];
     $tab2->addHeader($header);
     $tab2->addLine($var);
     echo $tab2->display();
     $sql = "START SLAVE" . $slave_master_host[$ip_of_master] . " UNTIL MASTER_LOG_FILE='" . $MASTER_MASTER_LOG_FILE . "', MASTER_LOG_POS=" . $MASTER_MASTER_LOG_POS . ";";
     echo $servers[0] . "> " . $sql . "\n";
     $slave->sql_query($sql);
     $MS->setInstance($slave);
     do {
         $thread_slave = $MS->isSlave();
         foreach ($thread_slave as $thread) {
             if ($thread['Master_Host'] == $ip_of_master) {
                 $SLAVE_MASTER_LOG_FILE = $thread['Master_Log_File'];
                 $SLAVE_MASTER_LOG_POS = $thread['Exec_Master_Log_Pos'];
             }
         }
         $sql = "SHOW SLAVE" . $slave_master_host[$ip_of_master] . " STATUS;";
         echo $servers[0] . "> " . $sql . "\n";
         $tab3 = new Table(1);
         $tab3->addHeader(array("Master_Log_File", "Exec_Master_Log_Pos"));
         $tab3->addLine(array($SLAVE_MASTER_LOG_FILE, $SLAVE_MASTER_LOG_POS));
         echo $tab3->display();
         sleep(1);
     } while ($MASTER_MASTER_LOG_POS != $SLAVE_MASTER_LOG_POS);
     $sql = "STOP SLAVE" . $master_master_host[$ip_of_master] . ";";
     echo $servers[0] . "> " . $sql . "\n";
     $slave->sql_query($sql);
     $sql = "CHANGE MASTER" . $slave_master_host[$ip_of_master] . " TO MASTER_HOST = '" . $param['master']['hostname'] . "', MASTER_LOG_FILE='" . $master_file . "', MASTER_LOG_POS=" . $master_position . ";";
     echo $servers[0] . "> " . $sql . "\n";
     $slave->sql_query($sql);
     $sql = "START SLAVE" . $slave_master_host[$ip_of_master] . ";";
     echo $servers[1] . "> " . $sql . "\n";
     $master->sql_query($sql);
     $sql = "START SLAVE" . $master_master_host[$ip_of_master] . ";";
     echo $servers[0] . "> " . $sql . "\n";
     $slave->sql_query($sql);
     //$slave->sql_query($sql);
 }
Ejemplo n.º 2
0
 public function replication()
 {
     $this->layout_name = false;
     $this->view = false;
     $MS = new MasterSlave();
     $tab = new Table();
     $tab->addHeader(array("Top", "Server", "IP", "Version", "M", "S", "IO", "SQL", "Behind", "File", "Position", "Current file", "Position"));
     $ip = array();
     $masters = array();
     $i = 0;
     foreach ($this->di['db']->getAll() as $db) {
         $i++;
         $server_config = $this->di['db']->sql($db)->getParams();
         $MS->setInstance($this->di['db']->sql($db));
         $master = $MS->isMaster();
         $slave = $MS->isSlave();
         $is_master = $master ? "â– " : "";
         $is_slave = $slave ? "â– " : "";
         $sql = "SHOW GLOBAL VARIABLES LIKE 'version'";
         $res = $this->di['db']->sql($db)->sql_query($sql);
         $data = $this->di['db']->sql($db)->sql_fetch_array($res, MYSQLI_ASSOC);
         if (strpos($data['Value'], "-")) {
             $version = strstr($data['Value'], '-', true);
         } else {
             $version = $data['Value'];
         }
         if ($slave) {
             $io = $slave['Slave_IO_Running'] === 'Yes' ? "OK" : Color::getColoredString("KO", "grey", "red", "bold");
             $sql = $slave['Slave_SQL_Running'] === 'Yes' ? "OK" : Color::getColoredString("KO", "grey", "red", "bold");
             $time_behind = $slave['Seconds_Behind_Master'];
         } else {
             $io = "";
             $sql = "";
             $time_behind = "";
         }
         $master_binlog = $slave ? $slave['Master_Log_File'] : "";
         $master_postion = $slave ? $slave['Exec_Master_Log_Pos'] : "";
         $file = $master ? $master['File'] : "";
         $position = $master ? $master['Position'] : "";
         $addr = !empty($server_config['port']) && is_numeric($server_config['port']) ? $server_config['hostname'] . ":" . $server_config['port'] : $server_config['hostname'];
         $ip[$addr] = array($i, $db, $addr, $version, $is_master, $is_slave, $io, $sql, $time_behind, $file, $position, $master_binlog, $master_postion);
         if ($slave) {
             $masters[$slave['Master_Host']][] = $addr;
         }
     }
     //debug($masters);
     $color = "purple";
     $i = 1;
     $j = 0;
     $colors = array("purple", "yellow", "blue", "cyan", "red", "green");
     $nb_color = count($colors);
     foreach ($masters as $master => $slaves) {
         $color = $colors[$j];
         $j++;
         $j = $j % $nb_color;
         $ip[$master][0] = $i;
         $ip[$master][1] = Color::getColoredString("â–  ", $color) . $ip[$master][1];
         $tab->addLine($ip[$master]);
         unset($ip[$master]);
         foreach ($slaves as $id_slave => $slave) {
             $i++;
             $ip[$slave][0] = $i;
             if ($cpt = count($masters[$master]) == 1) {
                 $ip[$slave][1] = Color::getColoredString("�■ ", $color) . $ip[$slave][1];
             } else {
                 $ip[$slave][1] = Color::getColoredString("�■ ", $color) . $ip[$slave][1];
             }
             $tab->addLine($ip[$slave]);
             unset($masters[$master][$id_slave]);
             unset($ip[$slave]);
         }
         $i++;
     }
     foreach ($ip as $server) {
         $server[1] = "â–  " . $server[1];
         $server[0] = $i;
         $tab->addLine($server);
         $i++;
     }
     /*
     *             $tab->addLine(array($i, $db, $addr, $version, $is_master, $is_slave, $io, $sql, $time_behind,
      $file, $position, $master_binlog, $master_postion, "Log space"));
     */
     /* $tab->addLine(array($server_name, $server_config['hostname'], $version, $is_master, $is_slave, $io, $sql, $time_behind,
         $file, $position, $master_binlog,$master_postion, "Log space"));
        */
     echo PHP_EOL . $tab->display();
     //echo Color::printAll();
 }
Ejemplo n.º 3
0
 /**
  * 
  * @author Aurélien LEQUOY <*****@*****.**>
  * @license GNU/GPL
  * @license http://opensource.org/licenses/GPL-3.0 GNU Public License
  * @param void 
  * @return void
  * @description connect to each MySQL server and get status of all replication thread to save in database
  * @access public
  * @package PmaCli
  * @See Glial\Neuron\Controller\PmaCli\replicationDrawGraph
  * @since 3.0 First time this was introduced.
  * @version 3.0
  */
 public function replicationUpdate()
 {
     $this->layout_name = false;
     $this->view = false;
     $default = $this->di['db']->sql(DB_DEFAULT);
     $MS = new MasterSlave();
     $ip = array();
     $masters = array();
     $i = 0;
     /*
      try {
     
      $default->sql_query('SET AUTOCOMMIT=0;');
      $default->sql_query('START TRANSACTION;');
     */
     $sql = "DELETE FROM mysql_replication_stats";
     $default->sql_query($sql);
     $sql = "DELETE FROM `link__mysql_cluster__mysql_server`";
     $default->sql_query($sql);
     $sql = "DELETE FROM `mysql_replication_stats`";
     $default->sql_query($sql);
     $sql = "ALTER TABLE mysql_replication_stats AUTO_INCREMENT = 1";
     $default->sql_query($sql);
     $sql = "ALTER TABLE mysql_replication_thread AUTO_INCREMENT = 1";
     $default->sql_query($sql);
     $sql = "ALTER TABLE mysql_cluster AUTO_INCREMENT = 1";
     $default->sql_query($sql);
     $sql = "ALTER TABLE link__mysql_cluster__mysql_server AUTO_INCREMENT = 1";
     $default->sql_query($sql);
     $sql = "SELECT * FROM mysql_server";
     $res50 = $default->sql_query($sql);
     while ($ob50 = $default->sql_fetch_object($res50)) {
         $db = $ob50->name;
         $i++;
         echo "[" . date("Y-m-d H:i:s") . "] Try to connect to : " . $db . "\n";
         $server_config = $this->di['db']->getParam($db);
         $server_on = 1;
         $server_config['port'] = empty($server_config['port']) ? 3306 : $server_config['port'];
         $dblink = $this->di['db']->sql($db);
         if ($dblink->is_connected) {
             $MS->setInstance($dblink);
             $master = $MS->isMaster();
             $slave = $MS->isSlave();
             /*
                               $client = new \crodas\InfluxPHP\Client(
                               "url", 8086, "root", "root"
                               );
                               $influxDB = $client->mysqlmetrics;
             
                               $sql = "SELECT * FROM information_schema.GLOBAL_STATUS ORDER BY VARIABLE_NAME";
                               $global_status = $dblink->sql_fetch_yield($sql);
             
             
                               foreach ($global_status as $status) {
             
                               $value =  (int) $status['VARIABLE_VALUE'];
                               $influxDB->insert(str_replace('_','-', $db) . "." . $status['VARIABLE_NAME'], ['value' => $value]);
                               }
             */
         } else {
             $server_on = 0;
             $master = false;
             $slave = false;
             echo " server Mysql : " . $server_config['hostname'] . " is down\n";
         }
         $sql = "SELECT id FROM mysql_server WHERE name = '" . $db . "'";
         //echo $sql . PHP_EOL;
         $res = $default->sql_query($sql);
         while ($ob = $default->sql_fetch_object($res)) {
             $data = array();
             $data['mysql_replication_stats']['id_mysql_server'] = $ob->id;
             $data['mysql_replication_stats']['date'] = date("Y-m-d H:i:s");
             $data['mysql_replication_stats']['ping'] = $server_on;
             if ($server_on === 1) {
                 $sql = "SELECT now() as date_time";
                 $res = $dblink->sql_query($sql);
                 $date_time = $dblink->sql_fetch_object($res);
                 // can be empty ???????????
                 $this->clusterGalera($dblink);
                 $data['mysql_replication_stats']['version'] = $dblink->getServerType() . " : " . $dblink->getVersion();
                 $data['mysql_replication_stats']['date'] = $date_time->date_time;
                 $data['mysql_replication_stats']['is_master'] = $master ? 1 : 0;
                 $data['mysql_replication_stats']['is_slave'] = $slave ? 1 : 0;
                 $data['mysql_replication_stats']['uptime'] = $dblink->getStatus('Uptime') ? $dblink->getStatus('Uptime') : '-1';
                 $data['mysql_replication_stats']['time_zone'] = $dblink->getVariables('system_time_zone') ? $dblink->getVariables('system_time_zone') : '-1';
                 $data['mysql_replication_stats']['ping'] = 1;
                 $data['mysql_replication_stats']['last_sql_error'] = '';
                 $data['mysql_replication_stats']['binlog_format'] = $dblink->getVariables('binlog_format') ? $dblink->getVariables('binlog_format') : 'N/A';
                 $sql = "SHOW databases";
                 $dblist = array();
                 $res3 = $dblink->sql_query($sql);
                 while ($ob3 = $dblink->sql_fetch_object($res3)) {
                     $dblist[] = $ob3->Database;
                 }
                 $data['mysql_replication_stats']['databases'] = implode(',', $dblist);
                 if ($master) {
                     $data['mysql_replication_stats']['file'] = $master['File'];
                     $data['mysql_replication_stats']['position'] = $master['Position'];
                 }
             }
             $id_mysql_replication_stats = $default->sql_save($data);
             if (!$id_mysql_replication_stats) {
                 debug($default->sql_error());
                 debug($data);
                 throw new \Exception("GLI-031 : Impossible to get id_mysql_replication_stats");
             }
             $thread = [];
             if ($slave) {
                 foreach ($slave as $thread) {
                     $data = array();
                     $data['mysql_replication_thread']['id_mysql_replication_stats'] = $id_mysql_replication_stats;
                     $data['mysql_replication_thread']['relay_master_log_file'] = $thread['Relay_Master_Log_File'];
                     $data['mysql_replication_thread']['exec_master_log_pos'] = $thread['Exec_Master_Log_Pos'];
                     $data['mysql_replication_thread']['thread_io'] = $thread['Slave_IO_Running'] === 'Yes' ? 1 : 0;
                     $data['mysql_replication_thread']['thread_sql'] = $thread['Slave_SQL_Running'] === 'Yes' ? 1 : 0;
                     //only for MariaDB 10
                     if (version_compare($dblink->getVersion(), "10", ">=")) {
                         $data['mysql_replication_thread']['thread_name'] = $thread['Connection_name'];
                     }
                     $data['mysql_replication_thread']['time_behind'] = $thread['Seconds_Behind_Master'];
                     $data['mysql_replication_thread']['master_host'] = $thread['Master_Host'];
                     $data['mysql_replication_thread']['master_port'] = $thread['Master_Port'];
                     //suuport for mysql 5.0
                     $data['mysql_replication_thread']['last_sql_error'] = empty($thread['Last_SQL_Error']) ? $thread['Last_Error'] : $thread['Last_SQL_Error'];
                     $data['mysql_replication_thread']['last_io_error'] = empty($thread['Last_IO_Error']) ? $thread['Last_Error'] : $thread['Last_IO_Error'];
                     $data['mysql_replication_thread']['last_sql_errno'] = empty($thread['Last_SQL_Errno']) ? $thread['Last_Errno'] : $thread['Last_SQL_Errno'];
                     $data['mysql_replication_thread']['last_io_errno'] = empty($thread['Last_IO_Errno']) ? $thread['Last_Errno'] : $thread['Last_IO_Errno'];
                     $id_mysql_replication_thread = $default->sql_save($data);
                     if (!$id_mysql_replication_thread) {
                         debug($default->sql_error());
                         debug($data);
                         //throw new \Exception("GLI-032 : Impossible to save row in mysql_replication_thread");
                     } else {
                         $thread['id_mysql_replication_thread'] = $default->sql_insert_id();
                     }
                 }
             }
             $this->saveDatabase($dblink, $ob->id, $master, $thread);
         }
     }
     $default->sql_query('COMMIT;');
     /*
               } catch (\Exception $ex) {
     
     
               $default->sql_query('ROLLBACK;');
               } */
 }
Ejemplo n.º 4
0
 function mysqldump($backup)
 {
     //$this->backup_dir = $this->backup_dir;
     $MS = new MasterSlave();
     $dumpoptions = " --quick --add-drop-table --default-character-set=utf8 --extended-insert ";
     $db_to_backup = $this->di['db']->sql($backup['id_connection']);
     $MS->setInstance($db_to_backup);
     $server_config = $db_to_backup->getParams();
     debug($backup['id_connection']);
     debug($server_config);
     $slave = $MS->isSlave();
     $master = $MS->isMaster();
     $userpassword = "******" . $server_config['hostname'] . " -P " . $backup['port'] . " -u " . $server_config['user'] . " -p" . $server_config['password'];
     if ($slave) {
         $stop_slave = "STOP SLAVE;";
         //because option --dump-slave restart replication after made the dump
         if ($db_to_backup->isMultiMaster()) {
             $stop_slave = "STOP ALL SLAVES;";
         }
         $cmd = "mysql " . $userpassword . " -e '" . $stop_slave . ";'";
         $this->cmd($cmd);
         debug($slave);
         $slave = $MS->isSlave();
         $this->slave_data = json_encode($slave);
     }
     if ($master) {
         debug($master);
         $this->master_data = json_encode($master);
     }
     //$backup['path']
     $file_name = $backup['db_name'] . "_" . date("Y-m-d_His") . "__" . $backup['db_name'] . ".sql";
     $this->checkDirectory($this->backup_dir);
     $extra = " ";
     if ($master) {
         $extra .= " --master-data=2 --single-transaction";
     }
     if ($slave) {
         if (version_compare($version, "5.5.3", ">")) {
             $extra .= " --dump-slave=2";
         }
     }
     $this->di['db']->sql(DB_DEFAULT)->sql_close();
     //$this->di['db']->sql(DB_DEFAULT);
     //echo $mysql_dump . "\n";
     Crypt::$key = CRYPT_KEY;
     $mysql_ssh_login = Crypt::decrypt($backup['mysql_ssh_login']);
     $mysql_ssh_password = Crypt::decrypt($backup['mysql_ssh_password']);
     $nas_ssh_login = Crypt::decrypt($backup['nas_ssh_login']);
     $nas_ssh_password = Crypt::decrypt($backup['nas_ssh_password']);
     $pmauser = '******';
     $pmapasswd = Crypt::decrypt(PMACONTROL_PASSWD);
     echo "{$backup['ip']}, 22, {$pmauser}, {$pmapasswd});\n";
     $ccc = new Ssh($backup['ip'], 22, $pmauser, $pmapasswd);
     $ccc->connect();
     $pwd = $ccc->exec('pwd');
     debug($pwd);
     $screen = $ccc->whereis("screen");
     //$screen = "/usr/bin/screen";
     $mysqldump = $ccc->whereis("mysqldump");
     $cmd = $mysqldump . $userpassword . $dumpoptions . $extra . " " . $backup['db_name'] . " > " . $this->backup_dir . "/" . $file_name;
     $id_backup = $backup['id_backup_database'];
     echo "MYSQL_DUMP CMD : " . $cmd . "\n";
     $ccc->exec("echo \"#!/bin/sh\n{$cmd}\" > " . $this->backup_dir . "/mysqldump.{$id_backup}.sh");
     $ccc->exec("echo \"#!/bin/sh\n{$screen} -S backup_database_{$id_backup} -d -m " . $this->backup_dir . "/mysqldump.{$id_backup}.sh\n" . "{$screen} -list | grep backup_database_{$id_backup} | head -n1 | cut -f1 -d'.' | sed 's/\\s//g' > " . $this->backup_dir . "/pid.{$id_backup}.pid\n" . "\" > " . $this->backup_dir . "/backup.{$id_backup}.sh");
     $ccc->exec("chmod +x " . $this->backup_dir . "/mysqldump." . $backup['id_backup_database'] . ".sh");
     $ccc->exec("chmod +x " . $this->backup_dir . "/backup." . $backup['id_backup_database'] . ".sh");
     $exec = $ccc->exec("sh " . $this->backup_dir . "/backup." . $backup['id_backup_database'] . ".sh");
     $pid = trim($ccc->exec("cat " . $this->backup_dir . "/pid." . $backup['id_backup_database'] . ".pid"));
     $waiting = ['/', '-', '\\', '|'];
     $i = 0;
     echo "backup in progress ... ";
     do {
         $i++;
         $mod = $i % 4;
         echo " " . $waiting[$mod];
         echo "";
         sleep(1);
         $nb_thread = $ccc->exec("ps -p {$pid} | grep {$pid} | wc -l");
         switch (trim($nb_thread)) {
             case "1":
                 $continue = true;
                 break;
             case "0":
                 $continue = false;
                 break;
             default:
                 throw new Exception("PMACTRL-085 : more than one thread ({$nb_thread}) have to audit code !");
                 break;
         }
     } while ($continue);
     if (!strpos("dump-slave", $extra) && $slave) {
         $start_slave = "START SLAVE;";
         //because option --dump-slave restart replication after made the dump
         if ($db_to_backup->isMultiMaster()) {
             $start_slave = "START ALL SLAVES;";
         }
         $cmd = "mysql " . $userpassword . " -e '" . $start_slave . ";'";
         $this->cmd($cmd);
     }
     $this->time_backup_end = microtime(true);
     $full_path = $this->backup_dir . "/" . $file_name;
     $file_gz = $this->backup_dir . "/" . $file_name . ".gz";
     //get md5 of file
     $this->md5_file = trim($ccc->exec("md5sum " . $this->backup_dir . "/" . $file_name . " | awk '{ print \$1 }'"));
     //get size of file
     $this->size_file = trim($ccc->exec("du -s " . $this->backup_dir . "/" . $file_name . " | awk '{ print \$1 }'"));
     $cmd = "nice gzip -c " . $this->backup_dir . "/" . $file_name . ">" . $file_gz;
     $ret = $ccc->exec($cmd);
     //get md5 of file
     $this->md5_gz = trim($ccc->exec("md5sum " . $this->backup_dir . "/" . $file_name . ".gz | awk '{ print \$1 }'"));
     $this->size_gz = trim($ccc->exec("du -s " . $this->backup_dir . "/" . $file_name . ".gz | awk '{ print \$1 }'"));
     $this->time_gzip = microtime(true);
     //remove old backup
     $grep = $ccc->whereis("grep");
     $ls = $ccc->whereis("ls");
     $sed = $ccc->whereis("sed");
     $xargs = $ccc->whereis("xargs");
     $rm = $ccc->whereis("rm");
     $cmd = 'cd ' . $this->backup_dir . ' && ' . $ls . ' -t | ' . $grep . ' \'__' . $backup['db_name'] . '.sql\' | ' . $sed . ' -e \'1,2d\' | ' . $xargs . ' -d \'\\n\' ' . $rm . '' . "\n";
     $ret = $ccc->exec($cmd);
     $ret = $ccc->exec("ls " . $file_gz . " | wc -l");
     if (trim($ret) === "1") {
         return $file_gz;
     }
     throw new \Exception("PMACTRL-052 : file not found '" . $file_gz . "'");
     echo "\n";
     return false;
 }