mysql> show variables like '%socket%';
+-----------------------------------------+---------------------------+
| Variable_name                           | Value                     |
+-----------------------------------------+---------------------------+
| performance_schema_max_socket_classes   | 10                        |
| performance_schema_max_socket_instances | -1                        |
| socket                                  | /var/lib/mysql/mysql.sock |
+-----------------------------------------+---------------------------+
3 rows in set (0.02 sec)
		
		

查看 php.ini 中的 pdo_mysql.default_socket 配置

		
# php -i | grep pdo_mysql.default_socket
pdo_mysql.default_socket => /tmp/mysql.sock => /tmp/mysql.sock
		
		

打开php.ini文件将 pdo_mysql.default_socket 配置为 /var/lib/mysql/mysql.sock

重启 php-fpm 后配置生效

systemctl restart php-fpm