Problem in installing MySQL on RHEL AS3 Update3

When install the RHEL AS3U3 with default setup, the MySQL-server will not be installed. But installing OSCAR4.1 on a RHEL AS3 Update3 computer needs the MySQL-server.version.rpm(put into the /tftpboot/rpm directory,which will be used by slave nodes). The easiest way to got the MySQL-server.version.rpm is to rebuild the MySQL-version.src.rpm package. While do this, there are some issues that you should pay attention to.
When install the RHEL AS3U3 with default setup, the MySQL-server will not be installed. But installing OSCAR4.1 on a RHEL AS3 Update3 computer needs the MySQL-server.version.rpm(put into the /tftpboot/rpm directory,which will be used by slave nodes). The easiest way to got the MySQL-server.version.rpm is to rebuild the MySQL-version.src.rpm package. While do this, there are some issues that you should pay attention to.
1. If you download the MySQL-version.src.rpm package from MySQL.com(Just as I have done anteriorly),then do

root#rpmbuild --rebuild MySQL-3.23.58-1.src.rpm
while,you will get a error message just like" user mysqldev does not exist-using root "
which can be resolved by adding a user named "mysqldev" and #chown the MySQL-3.23.58-1.src.rpm to user "mysqldev".
But when I redo the #rpmbuild, it still reports some error message
(Perhaps this will not occured to all version, but the version 3.23.58-1 on RHEL AS3U3 still can't be rebuilded successfully)
2. If you download the MySQL-version.src.rpm package from RedHat.com, congratulation!
ftp://ftp.redhat.com/pub/redhat/linux/enterprise/3/en/i386/srpms/mysql-3.23.58-1.src.rpm
root#rpmbuild --rebuild mysql-3.23.58-1.src.rpm
everything work well.
After installed the MySQL package and then started the MySQL server, most probably you will encounter "Can't connect to local MySQL server through socket '/tmp/mysql.sock'" error. Which can be figured out as follows:
#vi /etc/my.cnf
added these two lines
[client]
socket=/var/lib/mysql/mysql.sock