如何解决Mysql启动报ERROR：2002的分析

如何解决Mysql启动报ERROR：2002的分析

这篇文章主要给大家介绍了关于Mysql启动时报ERROR：2002问题的分析与解决方法，文中通过示例代码介绍将该问题分析的非常详细，对同样遇到这个问题的朋友们具有一定的参考学习价值，需要的朋友们下面来一起看看吧。前言本文主要给大家介绍了关于Mysql启动报ERROR：2002的分析与解决，分享出来供大家参考学习，下面话不多说了，来一起看看详细的介绍吧。1、故障现象[root@localhost scripts]# mysql -u rootERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysqld.sock' (2)2、故障分析查看mysql实例的状态[root@localhost scripts]# netstat -ntlp | grep 3306tcp 0 0 :::3306 :::* LISTEN 13001/mysqld查看my.cnf关于socket的配置[root@localhost scripts]# more /etc/my.cnf |grep socksocket = /tmp/mysqld.sock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@localhost scripts]# more SZDB.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 whole 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: 33062014-10-11 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 events2014-10-11 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#Author ：Leshami#Blog : http://www.linuxidc.com3、解决故障a、通过配置my.cnf mysql选项socket文件位置解决先停止mysql服务器[root@localhost scripts]# systemvtl restart mysqldShutting down MySQL.[ OK ]修改my.cnf，如下[root@localhost scripts]# vi /etc/my.cnf[mysql]no-auto-rehashsocket = /tmp/mysqld.sock #添加该行重启mysql服务器[root@localhost scripts]# systemctl restart mysqld Starting MySQL..[ OK ]再次连接正常[root@localhost scripts]# mysql -uroot -pEnter password:mysql> show variables like 'version';+---------------+------------+| Variable_name | Value |+---------------+------------+| version | 5.6.12-log |+---------------+------------+b、为socket文件建立链接方式[root@SZDB mysqldata]# ln -s /tmp/mysql.sock /data/mysqldata/mysql.sockln: creating symbolic link `/data/mysqldata/mysql.sock' to `/tmp/mysql.sock': File exists[root@SZDB mysqldata]# rm mysql.sock #上面提示文件存在，所以删除之前的mysql.sock文件[root@SZDB mysqldata]# ln -s /tmp/mysql.sock /data/mysqldata/mysql.sock[root@SZDB mysqldata]# ls -hltr mysql.socklrwxrwxrwx 1 root root 15 Oct 11 14:00 mysql.sock -> /tmp/mysql.sock[root@SZDB mysqldata]# mysql -uroot -pEnter password:mysql> show variables like 'socket';+---------------+-----------------+| Variable_name | Value |+---------------+-----------------+| socket | /tmp/mysql.sock |+---------------+-----------------+总结2023-07-27