MySQL错误
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
复制代码代码如下:源代码结局谁炸了火车
[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
复制代码代码如下:
#查看mysql实例的状态
[root@SZDB mysqldata]# netstat -ntlp | grep 3306arrow花洒
tcp 0 0 :::3306 :::* LISTEN 13001/mysqld
#查看myf关于socket的配置
[root@SZDB mysqldata]# more /etc/myf |grep sock
socket = /tmp/mysql.sock
#由上可知myf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
德国对日本实时比分[root@SZDB mysqldata]#
............
2014-10-11 13:17:21 13001 [Note] InnoDB: 5.6.12 started; log sequence number 1625997
php ini怎么创建/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myf mysql选项socket⽂件位置解决
复制代码代码如下:
#先停⽌mysql服务器
[root@SZDB mysqldata]# service mysqld stop
Shutting down MySQL.[ OK ]
#修改myf,如下
[root@SZDB mysqldata]# vi /etc/myf
[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
mysql无法连接到服务器Enter password:
在静态方法中绝对不能调用实例方法mysql> show variables like 'version';
+---------------+------------+
| Variable_name | Value |
+---------------+------------+
| version | 5.6.12-log |
+---------------+------------+
b、为socket⽂件建⽴链接⽅式
复制代码代码如下:
[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 |
+---------------+-----------------+
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