linux平台安装Mysql报错

安装过程：
[root@ibt syssoft]# rpm -ivh MySQL-server-5.1.56-1.glibc23.x86_64.rpm
Preparing... ########################################### [100%]
1:MySQL-server ########################################### [100%]

PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !
To do so, start the server, then issue the following commands:

/usr/bin/mysqladmin -u root password 'new-password'
/usr/bin/mysqladmin -u root -h ibt.com password 'new-password'

Alternatively you can run:
/usr/bin/mysql_secure_installation

which will also give you the option of removing the test
databases and anonymous user created by default. This is
strongly recommended for production servers.

See the manual for more instructions.

Please report any problems with the /usr/bin/mysqlbug script!

Starting MySQL.Manager of pid-file quit without updating file.[FAILED]

简单安装都没有通过，报错 Starting MySQL.Manager of pid-file quit without updating file.[FAILED]
这是什么原因

[root@ibt ~]# uname -a
Linux ibt.com 2.6.18-194.el5 #1 SMP Fri Apr 2 14:58:14 EDT 2010 x86_64 x86_64 x86_64 GNU/Linux