我有以下配置
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql-socket/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
innodb_buffer_pool_size=64M
innodb_log_file_size=16M
[mysqld_safe]
log-error=/var/log/shared/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid
因此，套接字文件有一个自定义路径/var/lib/mysql-socket/mysql.sock。
MySQL 服务器工作，但我无法连接到它。
$ mysql -uroot
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
但需要的文件存在。
$ ls /var/lib/mysql-socket/mysql.sock
/var/lib/mysql-socket/mysql.sock
当套接字文件的路径是/var/lib/mysql/mysql.sock它工作正常。