ENGCOM-1258: Fix bug with retry connect and custom db port #14435

Author: Stanislav Idolov

lib/internal/Magento/Framework/DB/Adapter/Pdo/Mysql.php

@@ -549,6 +549,15 @@ protected function _query($sql, $bind = [])
                     $retry = true;
                     $triesCount++;
                     $this->closeConnection();
+
+                    /**
+                     * _connect() function does not allow port parameter, so put the port back with the host
+                     */
+                    if (!empty($this->_config['port'])) {
+                        $this->_config['host'] = implode(':', [$this->_config['host'], $this->_config['port']]);
+                        unset($this->_config['port']);
+                    }
+
                     $this->_connect();
                 }