《Mysql学习Mysql启动报ERROR：2002的分析与解决》要点：
本文介绍了Mysql学习Mysql启动报ERROR：2002的分析与解决，希望对您有用。如果有疑问，可以联系我们。
前言MYSQL必读
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.MYSQL必读
1、故障现象
MYSQL必读
[root@localhost scripts]# mysql -u root ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysqld.sock' (2)
2、故障分析
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查看mysql实例的状态
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[root@localhost scripts]# netstat -ntlp | grep 3306 tcp 0 0 :::3306 :::* LISTEN 13001/mysqld
查看my.cnf关于socket的配置
MYSQL必读
[root@localhost scripts]# more /etc/my.cnf |grep sock socket = /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
MYSQL必读
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
MYSQL必读
[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 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 #Author ：Leshami #Blog : http://www.linuxidc.com
3、解决故障
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a、通过配置my.cnf mysql选项socket文件位置解决
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先停止mysql服务器
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[root@localhost scripts]# systemvtl restart mysqld Shutting down MySQL.[ OK ]
修改my.cnf,如下
MYSQL必读
[root@localhost scripts]# vi /etc/my.cnf [mysql] no-auto-rehash socket = /tmp/mysqld.sock #添加该行
重启mysql服务器
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[root@localhost scripts]# systemctl restart mysqld Starting MySQL..[ OK ]
再次连接正常
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[root@localhost scripts]# mysql -uroot -p Enter 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
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[root@SZDB 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@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.sock lrwxrwxrwx 1 root root 15 Oct 11 14:00 mysql.sock -> /tmp/mysql.sock [root@SZDB mysqldata]# mysql -uroot -p Enter password: mysql> show variables like 'socket'; +---------------+-----------------+ | Variable_name | Value | +---------------+-----------------+ | socket | /tmp/mysql.sock | +---------------+-----------------+
总结MYSQL必读
以上就是这篇文章的全部内容了,希望本文的内容对大家的学习或者工作能带来一定的帮助,如果有疑问大家可以留言交流,谢谢大家对维易PHP的支持.MYSQL必读
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