Starting MySQL.. ERROR! The server quit without updating PID file (/usr/local/mysql/data/vm10-0-0-19

 輸入：service mysqld start 

報錯：

 Starting MySQL.. ERROR! The server quit without updating PID file (/usr/local/mysql/data/vm10-0-0-19.ksc.com.pid).

解決： ./scripts/mysql_install_db --user=mysql --basedir=/usr/local/mysql/ --datadir=/usr/local/mysql/data/

參考博客：在Centos上安裝MySQL時出現這樣的錯誤：Starting MySQL.. ERROR! The server quit without updating PID file (/usr/loca

輸入：service mysqld start

報錯：

Warning: World-writable config file '/etc/my.cnf' is ignored
Starting MySQL.Warning: World-writable config file '/etc/my.cnf' is ignored
Warning: World-writable config file '/etc/my.cnf' is ignored

 ERROR! The server quit without updating PID file (/usr/local/mysql/data/vm10-0-0-19.ksc.com.pid).

出現這種情況的原因是：mysql故意不讓用戶重寫my.cnf，權限默認是644, 即-rw-r--r--, 如果權限不是644， 則會出現這種情況。

那就改：chmod 644 /etc/my.cnf  

參考博客：Warning: World-writable config file '/etc/my.cnf' is ignored

3:輸入： mysql -uroot -p

報錯：

Enter password:

ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

我的解決辦法：ln -s /var/lib/mysql/mysql.sock /tmp/mysql.sock