前言
本文主要給大家介紹了關于Mysql啟動報ERROR：2002的分析與解決，分享出來供大家參考學習，下面話不多說了，來一起看看詳細的介紹吧。
1、故障現象
[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實例的狀態
[root@localhost scripts]# netstat -ntlp | grep 3306tcp 0 0 :::3306 :::* LISTEN 13001/mysqld
查看my.cnf關于socket的配置
[root@localhost scripts]# more /etc/my.cnf |grep socksocket = /tmp/mysqld.sock
也就是說mysqld已經聲稱了正確的sock文件，但客戶端連接還是從初始目錄去找sock文件
下面查看后臺日志，有個ERROR，是關于滿查詢日志的，是由于目錄不存在而產生的錯誤，與當前故障無關
[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.com
3、解決故障
a、通過配置my.cnf mysql選項socket文件位置解決
先停止mysql服務器
[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 #添加該行
重啟mysql服務器
[root@localhost scripts]# systemctl restart mysqld Starting MySQL..[ OK ]
再次連接正常
[root@localhost scripts]# mysql -uroot -pEnter 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.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.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 |+---------------+-----------------+
總結
以上就是這篇文章的全部內容了，希望本文的內容對大家的學習或者工作能帶來一定的幫助，如果有疑問大家可以留言交流，謝謝大家對VeVb武林網的支持。
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