[英]Mysql weird connection problem
I've a weird problem. 我有一个奇怪的问题。 I've mysql 5.1 installed on my ubuntu 9.04.
我在ubuntu 9.04上安装了mysql 5.1。
I've used it a long time (say 3 month) and everything was going right. 我已经使用了很长时间(例如3个月),并且一切正常。 Until i faced this really weird problem.
直到我遇到这个非常奇怪的问题。
When i want to connect to a random database i get this message: 当我想连接到随机数据库时,出现以下消息:
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
Connection id: 1
Current database: test_cake
ERROR 2006 (HY000): MySQL server has gone away
No connection. Trying to reconnect...
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/run/mysqld/mysqld.sock' (111)
ERROR:
Can't connect to the server
It only happens with some databases, while others are totally usefull and healthy. 它仅在某些数据库中发生,而其他数据库则完全有用且健康。 After that, if i try to restart the server i get this.
在那之后,如果我尝试重新启动服务器,我会得到这个。
shell> /etc/init.d/mysql restart
* Stopping MySQL database server mysqld cat: /var/run/mysqld/mysqld.pid: Permiso denegado
[fail]
* Starting MySQL database server mysqld cat: /var/run/mysqld/mysqld.pid: Permiso denegado
cat: /var/run/mysqld/mysqld.pid: Permiso denegado
cat: /var/run/mysqld/mysqld.pid: Permiso denegado
cat: /var/run/mysqld/mysqld.pid: Permiso denegado
cat: /var/run/mysqld/mysqld.pid: Permiso denegado
cat: /var/run/mysqld/mysqld.pid: Permiso denegado
cat: /var/run/mysqld/mysqld.pid: Permiso denegado
cat: /var/run/mysqld/mysqld.pid: Permiso denegado
cat: /var/run/mysqld/mysqld.pid: Permiso denegado
cat: /var/run/mysqld/mysqld.pid: Permiso denegado
cat: /var/run/mysqld/mysqld.pid: Permiso denegado
cat: /var/run/mysqld/mysqld.pid: Permiso denegado
cat: /var/run/mysqld/mysqld.pid: Permiso denegado
cat: /var/run/mysqld/mysqld.pid: Permiso denegado
cat: /var/run/mysqld/mysqld.pid: Permiso denegado
cat: /var/run/mysqld/mysqld.pid: Permiso denegado
[fail]
("permiso denegado" is "permission denied").
I don't know what to do. 我不知道该怎么办。 I change the /var/run/mysqld/mysqld.pid attributes but still not working.
我更改了/var/run/mysqld/mysqld.pid属性,但仍然无法正常工作。
Can anybody help me ? 有谁能够帮助我 ?
See if this will work: 查看是否可行:
su (become root)
su mysql (become user mysql, or whatever account mysql runs as)
cd /var/run/mysqld (see if the directory is accessible to mysql)
cat mysqld.pid (see if the file is accessible)
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