Yum Server Configuraiton In Simple 4 Step

Copy From the Media Disk to the Local /opt Directory
1) cp -var /media/RHEL_5.5\ x86_64\ DVD/Server/ /opt/rpm/
2)Install createrepo rpm package.
rpm -ivh createrepo-0.4.11-3.el5.noarch.rpm

3)Using Createrepo Package create the repo package for /opt/rpm.
createrepo /opt/rpm/
228/3116 - foomatic-3.0.2-38.3.el5.x86_64.rpm

4)Edit the /etc/yum.repos.d/filename.repo

Before Edit the File

1[c5-media]
2name=CentOS-$releasever - Media
3baseurl=file:///media/CentOS/
4gpgcheck=1
5enabled=0

After Edit the File

1 [yumserver]
2 name=yum serve
3 baseurl=file:///opt/rpm/
4 gpgcheck=0
5 enabled=1
Note : change Line 3,4,5

Verfiy whether Yum Install Sucessfully Or Not

# yum clean all
Loaded plugins: fastestmirror
Cleaning up Everything
Cleaning up list of fastest mirrors
# yum list all
--------------------------
Server : [ ######################################      ]1223/2531
we have to get the these type of Output that confirm Yum installed succefully for this Server.
How to Configure Yum Server In Simple Step by step Installation Process.

#yum whatprovides portmap
portmap-4.0-65.2.2.1.x86_64 : A program which manages RPC connections.
Repo        : installed
Matched from:
Other       : Provides-match: portmap