时间，渐渐带走了年少轻狂，也慢慢沉淀了冷暖自知。成功的道路上，肯定会有失败；对于失败，我们要正确地看待和对待，不怕失败者，则必成功；怕失败者，则一无是处，会更失败。
在安装好了MySQL之后，使用了新的配置文件后，MySQL服务器可以成功启动，但在登陆的时候出现了ERROR 2002 (HY000): Can't connect to local MySQL server through socket，即无法通过socket连接到mysql服务器，同时提供了socket文件的位置。下面是这个问题的描述与解决办法。
1、故障现象
[root@SZDB mysqldata]# mysql -uroot -p123456
Warning: Using a password on the command line interface can be insecure.
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/data/mysqldata/mysql.sock' (111)
#故障环境
[root@SZDB mysqldata]# more /etc/issue
CentOS release 5.9 (Final)
Kernel \r on an \m
2、故障分析
#查看mysql实例的状态
[root@SZDB mysqldata]# netstat -ntlp | grep 3306
tcp 0 0 :::3306 :::* LISTEN 13001/mysqld
#查看my.cnf关于socket的配置
[root@SZDB mysqldata]# more /etc/my.cnf |grep sock
socket = /tmp/mysql.sock
#由上可知my.cnf中定义的为/tmp目录下，而错误提示为/data/mysqldata/目录下
#也就是说mysqld已经声称了正确的sock文件，但客户端连接还是从初始目录去找sock文件
#下面查看后台日志，有个ERROR，是关于满查询日志的，是由于目录不存在而产生的错误，与当前故障无关
[root@SZDB mysqldata]# 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
3、解决故障
a、通过配置my.cnf mysql选项socket文件位置解决
#先停止mysql服务器
[root@SZDB mysqldata]# service mysqld stop
Shutting down MySQL.[ OK ]
#修改my.cnf，如下
[root@SZDB mysqldata]# vi /etc/my.cnf
[mysql]
no-auto-rehash
socket = /tmp/mysql.sock #添加该行
#重启mysql服务器
[root@SZDB mysqldata]# service mysqld start
Starting MySQL..[ OK ]
#再次连接正常
[root@SZDB mysqldata]# mysql -uroot -p
Enter password:
mysql> show variables like 'version';
+---------------+------------+
| Variable_name | Value |
+---------------+------------+
| version | 5.6.12-log |
+---------------+------------+
b、为socket文件建立链接方式
[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 |
+---------------+-----------------+
到此这篇关于MySQL错误ERROR2002(HY000):Can'tconnecttolocalMySQLserverthroughsocket就介绍到这了。有朝一日左手牵着你夏夜露宿海边带上烟花和啤酒早晨叫醒你看日出的轮廓你坚持着说那是夕阳。更多相关MySQL错误ERROR2002(HY000):Can'tconnecttolocalMySQLserverthroughsocket内容请查看相关栏目，小编编辑不易，再次感谢大家的支持！
