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

从供应商手中接手一个云平台（WindwosAzure）上的MySQL数据库，登录数据库时遇到错误：$mysql-uroot-pEnterpassword:ERROR2002(HY000):Can'tconnecttolocalMySQLserverthroughsocket'/var/lib/mysql/mysql.sock'(2)检查配置文件/etc/my.cnf发现供应商修改了mysql数据库的数据存储目录，另外mysql.sock文件位置也变更为了/dat/data/mysql/mysql.sock

$more/etc/my.cnf

#Foradviceonhowtochangesettingspleasesee

#
'target='_blank'>http://dev.mysql.com/doc/refman/5.6/en/server-configuration-defaults.html
[mysqld]
#
#Removeleading#andsettotheamountofRAMforthemostimportantdata
#cacheinMySQL.Startat70%oftotalRAMfordedicatedserver,else10%.
#innodb_buffer_pool_size=128M
innodb_buffer_pool_size=2048M
#
#Removeleading#toturnonaveryimportantdataintegrityoption:logging
#changestothebinarylogbetweenbackups.
#log_bin
#
#Removeleading#tosetoptionsmainlyusefulforreportingservers.
#TheserverdefaultsarefasterfortransactionsandfastSELECTs.
#Adjustsizesasneeded,experimenttofindtheoptimalvalues.
#join_buffer_size=128M
#sort_buffer_size=2M
#read_rnd_buffer_size=2M
#datadir=/var/lib/mysql
#socket=/var/lib/mysql/mysql.sock
datadir=/dat/data/mysql
socket=/dat/data/mysql/mysql.sock
#Disablingsymbolic-linksisrecommendedtopreventassortedsecurityrisks
symbolic-links=0
#RecommendedinstandardMySQLsetup
sql_mode=NO_ENGINE_SUBSTITUTION,STRICT_TRANS_TABLES
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid

检查发现/var/lib/mysql.sock文件不存在，可以通过建立mysql.sock文件的软连接。然后登录数据库，问题解决。

[root@GETAZLNX005~]#ls/var/lib/mysql.sock
ls:cannotaccess/var/lib/mysql.sock:Nosuchfileordirector
[root@GETAZLNX005~]#ln-s/dat/data/mysql/mysql.sock/var/lib/mysql/mysql.sock