Can't connect to local MySQL server

Question

Warning: mysql_connect(): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (111) in /usr/local/apache/htdocs/qgweb/include/class_mysql.php on line 22
Can't connect to local MySQL server through socket '/tmp/mysql.sock' (111)

Answer 1

运行过install_db什么什么的一个脚本了吗？

Answer 2

以下是mysql-5.0.19的安装过程
1. Add a login user and group for `mysqld' to run as:

          shell> groupadd mysql
          shell> useradd -g mysql mysql
2.Unpack the distribution into the current directory:
          shell> tar zxvf /PATH/TO/MYSQL-VERSION-OS.tar.gz
3.进入解压后的目录
cd mysql-5.0.19
./configure --prefix=/usr/local/mysql
make
make install
4.cp support-files/my-medium.cnf /etc/my.cnf
5.cd /usr/local/mysql/bin
执行mysql_install_db --user=mysql
6.回到目录/usr/local/mysql执行以下命令(注意有.的地方不能省去这个.)
    chown -R root  .
    chown -R mysql var
    chgrp -R mysql .
7.启动mysql
shell> /usr/local/mysql/bin/mysqld_safe --user=mysql &