mysql數據庫已啟動，但是登錄數據庫報錯
阿新 • • 發佈：2018-05-24
mysql數據庫已啟動但是登錄數據庫報mysql數據庫默認設置的是開機自啟動，重啟db01服務器後，想進入數據庫查看數據信息：但是無法進入數據庫，報錯如下：
[root@db01 ~]# mysql -uroot -p Enter password: ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/data/mysql/mysql.sock' (2)
查看mysql數據庫端口狀態，嘗試重啟，關閉數據庫，但是報錯如下：
[root@db01 ~]# lsof -i:3306 COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME mysqld 1369 mysql 11r IPv4 9721 0t0 TCP *:mysql (LISTEN) sqld 1369 mysql 34u IPv4 10594 0t0 TCP localhost:mysql->localhost:33160 (ESTABLISHED) mysqld 1369 mysql 50u IPv4 10916 0t0 TCP localhost:mysql->localhost:33176 (ESTABLISHED) mysqld 1369 mysql 51u IPv4 10919 0t0 TCP localhost:mysql->localhost:33178 (ESTABLISHED) java 1444 nginx 128u IPv4 10556 0t0 TCP localhost:33160->localhost:mysql (ESTABLISHED) java 1444 nginx 135u IPv4 10914 0t0 TCP localhost:33176->localhost:mysql (ESTABLISHED) java 1444 nginx 136u IPv4 10917 0t0 TCP localhost:33178->localhost:mysql (ESTABLISHED) [root@db01 ~]# service mysqld status MySQL is running but PID file could not be found [FAILED] [root@db01 ~]# /etc/init.d/mysqld restart MySQL server PID file could not be found! [FAILED] Starting MySQL.......The server quit without updating PID file (/data/mysql/mysql.pid). [FAILED] [root@db01 mysql]# /etc/init.d/mysqld stop MySQL server PID file could not be found! [FAILED] [root@db01 mysql]# /etc/init.d/mysqld start Starting MySQL.....The server quit without updating PID file (/data/mysql/mysql.pid). [FAILED]
解決方法
完善mysql配置文件：
如果確認mysql服務正常運行，還提示文章標題的此錯誤，那就是“/etc/my.cnf”配置文件的問題了。解決辦法是修改“/etc/my.cnf”配置文件，在配置文件中添加“[client]”選項和“[mysql]”選項，並使用這兩個選項下的“socket”參數值，與“[mysqld]”選項下的“socket”參數值，指向的socket文件路徑完全一致。如下：
[mysqld] datadir=/data/mysql/mysql socket=/data/mysql/mysql.sock ...省略n行（愛E族）... [client] default-character-set=utf8 socket=/data/mysql/mysql.sock [mysql] default-character-set=utf8 socket=/data/mysql/mysql.sock
配置完/etc/my.cnf後，重啟服務器後，然後就可以正常進入數據庫了
參考文檔：
https://www.cnblogs.com/wzg123/p/6723338.html
mysql數據庫已啟動，但是登錄數據庫報錯