這篇文章主要為大家介紹了關於Mysql啟動時報ERROR:2002問題的分析與解決方法,文中透過範例程式碼介紹將該問題分析的非常詳細,對同樣遇到這個問題的朋友們具有一定的參考學習價值,需要的朋友們下面來一起看看吧。
前言
本文主要介紹給大家介紹了關於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 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實例的狀態
[root@localhost scripts]# netstat -ntlp | grep 3306 tcp 0 0 :::3306 :::* LISTEN 13001/mysqld
查看my.cnf關於socket的設定
[root@localhost scripts]# more /etc/my.cnf |grep sock socket = /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
下面查看後台日誌,有個ERROR,是關於滿查詢日誌的,是由於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 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、透過設定my.cnf mysql選項socket檔案位置解決
先停止mysql伺服器
[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 #添加该行
重啟mysql伺服器
[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檔案建立連結方式
[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 | +---------------+-----------------+
總結
#以上是如何解決Mysql啟動報ERROR:2002的分析的詳細內容。更多資訊請關注PHP中文網其他相關文章!