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美国VPSLinux下MySQL错误ERROR2002解决方法

2024/11/12 45次

美国VPSLinux下MySQL错误ERROR2002解决方法

在安装好了MySQL之后,使用了新的配置文件后,MySQL服务器可以成功启动,但在登陆的时候出现了ERROR 2002 (HY000): Cant connect to local MySQL server through socket,即无法通过socket连接到mysql服务器,同时提供了socket文件的位置。下面是这个问题的描述与解决办法。
故障情况:
[root@landui mysqldata]# mysql -uroot Warning: Using a password on the command line interface can be insecure. ERROR 2002 (HY000): Cant connect to local MySQL server through socket /data/mysqldata/mysql.sock (111) #故障环境 [root@landui mysqldata]# more /etc/issue CentOS release 5.9 (Final) Kernel on an m 故障分析:
#查看mysql实例的状态 [root@landui mysqldata]# netstat -ntlp | grep 3306 tcp 0 0 :::3306 :::* LISTEN 13001/mysqld #查看my.cnf关于socket的配置 [root@landui mysqldata]# more /etc/my.cnf |grep sock socket = /tmp/mysql.sock #由上可知my.cnf中定义的为/tmp目录下,而错误提示为/data/mysqldata/目录下 #也就是说mysqld已经声称了正确的sock文件,但客户端连接还是从初始目录去找sock文件 #下面查看后台日志,有个ERROR,是关于满查询日志的,是由于目录不存在而产生的错误,与当前故障无关 [root@landui mysqldata]# more landui.err ............ 2014-10-11 13:17:21 13001 [Note] InnoDB: 5.6.12 started; log sequence number 1625997 /app/soft/mysql/bin/mysqld: File /log/mysql_logs/slowquery.log not found (Errcode: 2 - No such file or directory)
2014-10-11 13:17:21 13001 [ERROR] Could not use /log/mysql_logs/slowquery.log for logging (error 2). Turning logging off for the who le duration of the MySQL server process. To turn it on again: fix the cause, shutdown the MySQL server and restart it. 2014-10-11 13:17:21 13001 [Note] Server hostname (bind-address): *; port: 3306 2014-10-11 13:17:21 13001 [Note] IPv6 is available. 2014-10-11 13:17:21 13001 [Note] - :: resolves to ::; 2014-10-11 13:17:21 13001 [Note] Server socket created on IP: ::. 2014-10-11 13:17:21 13001 [Note] Event Scheduler: Loaded 0 events 2014-10-11 13:17:21 13001 [Note] /app/soft/mysql/bin/mysqld: ready for connections. Version: 5.6.12-log socket: /tmp/mysql.sock port: 3306 Source distribution 解决方法:
1、通过配置my.cnf mysql选项socket文件位置解决
#先停止mysql服务器 [root@landui mysqldata]# service mysqld stop Shutting down MySQL.[ OK ] #修改my.cnf,如下 [root@landui mysqldata]# vi /etc/my.cnf [mysql] no-auto-rehash socket = /tmp/mysql.sock #添加该行 #重启mysql服务器 [root@landui mysqldata]# service mysqld start Starting MySQL..[ OK ] #再次连接正常 [root@landui mysqldata]# mysql -uroot -p Enter password: mysql> show variables like version; +---------------+------------+ | Variable_name | Value | +---------------+------------+ | version | 5.6.12-log | +---------------+------------+
2、为socket文件建立链接方式
[root@landui mysqldata]# ln -s /tmp/mysql.sock /data/mysqldata/mysql.sock ln: creating symbolic link `/data/mysqldata/mysql.sock to `/tmp/mysql.sock: File exists [root@landui mysqldata]# rm mysql.sock #上面提示文件存在,所以删除之前的mysql.sock文件 [root@landui mysqldata]# ln -s /tmp/mysql.sock /data/mysqldata/mysql.sock [root@landui mysqldata]# ls -hltr mysql.sock lrwxrwxrwx 1 root root 15 Oct 11 14:00 mysql.sock -> /tmp/mysql.sock [root@landui mysqldata]# mysql -uroot -p Enter password: mysql> show variables like socket; +---------------+-----------------+ | Variable_name | Value | +---------------+-----------------+ | socket | /tmp/mysql.sock | +---------------+-----------------+

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