Mysql啟動(dòng)報(bào)ERROR:2002的分析與解決
本文主要給大家介紹了關(guān)于Mysql啟動(dòng)報(bào)ERROR:2002的分析與解決,分享出來(lái)供大家參考學(xué)習(xí),下面話不多說(shuō)了,來(lái)一起看看詳細(xì)的介紹吧。
1、故障現(xiàn)象
[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
查看mysql實(shí)例的狀態(tài)
[root@localhost scripts]# netstat -ntlp | grep 3306 tcp 0 0 :::3306 :::* LISTEN 13001/mysqld
查看my.cnf關(guān)于socket的配置
[root@localhost scripts]# more /etc/my.cnf |grep sock socket = /tmp/mysqld.sock
也就是說(shuō)mysqld已經(jīng)聲稱了正確的sock文件,但客戶端連接還是從初始目錄去找sock文件
下面查看后臺(tái)日志,有個(gè)ERROR,是關(guān)于滿查詢?nèi)罩镜?,是由于目錄不存在而產(chǎn)生的錯(cuò)誤,與當(dāng)前故障無(wú)關(guān)
[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、解決故障
a、通過(guò)配置my.cnf mysql選項(xiàng)socket文件位置解決
先停止mysql服務(wù)器
[root@localhost scripts]# systemvtl restart mysqld Shutting down MySQL.[ OK ]
修改my.cnf,如下
[root@localhost scripts]# vi /etc/my.cnf [mysql] no-auto-rehash socket = /tmp/mysqld.sock #添加該行
重啟mysql服務(wù)器
[root@localhost scripts]# systemctl restart mysqld Starting MySQL..[ OK ]
再次連接正常
[root@localhost scripts]# mysql -uroot -p Enter password: mysql> show variables like 'version'; +---------------+------------+ | Variable_name | Value | +---------------+------------+ | version | 5.6.12-log | +---------------+------------+
b、為socket文件建立鏈接方式
[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,所以刪除之前的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 | +---------------+-----------------+
總結(jié)
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