我无法在mysql中进行任何操作：
root@server2 [~]# /etc/init.d/mysql status
MySQL is not running, but lock file (/var/lock/subsys/mysql[FAILED]
root@server2 [~]# /etc/init.d/mysql restart
MySQL server PID file could not be found! [FAILED]
/etc/init.d/mysql: line 301: cd: /usr/local/mysql: No such file or directory
Starting MySQLCouldn't find MySQL server (/usr/local/mysql/[FAILED]ld_safe)
root@server2 [~]# /etc/init.d/mysql stop
MySQL server PID file could not be found! [FAILED]
root@server2 [~]# /etc/init.d/mysql start
/etc/init.d/mysql: line 301: cd: /usr/local/mysql: No such file or directory
Starting MySQLCouldn't find MySQL server (/usr/local/mysql/[FAILED]ld_safe)
root@server2 [~]# mysql -u root
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (111)
我的文件/etc/my.cnf：
root@server2 [~]# cat /etc/my.cnf
[mysqld]
user = mysql
basedir = /usr/local/mysql
skip-external-locking
key_buffer = 384M
max_allowed_packet=268435456
max_connections = 500
max_user_connections = 35
wait_timeout=40
connect_timeout=10
table_cache = 512
sort_buffer_size = 2M
read_buffer_size = 2M
read_rnd_buffer_size = 8M
myisam_sort_buffer_size = 64M
thread_cache_size = 8
query_cache_size = 32M
thread_concurrency = 8
server-id = 1
skip-innodb
[mysqldump]
quick
max_allowed_packet = 16M
[mysql]
no-auto-rehash
[myisamchk]
key_buffer = 256M
sort_buffer_size = 256M
read_buffer = 2M
write_buffer = 2M
[mysqlhotcopy]
interactive-timeout
在一些帖子中搜索，我发现某些程序可能正在持有mysql。按照检查的命令：
root@server2 [~]# lsof | grep mysql
tailwatch 20718 root mem REG 3,5 206553 8922204 /usr/local/cpanel/3rdparty/perl/514/lib/perl5/cpanel_lib/i386-linux-64int/auto/DBD/mysql/mysql.so
yum info mysql-server
root@server2 [~]# yum info mysql-server
Loaded plugins: fastestmirror
Loading mirror speeds from cached hostfile
* base: centos.aol.com
* extras: centos.chi.host-engine.com
* updates: mirror.lug.udel.edu
Excluding Packages in global exclude list
Finished
Error: No matching Packages to list
其他信息..