Creating A Local Yum Repository (CentOS)
Author & Content of this howto, Tim Haselaars (http://www.trinix.be)
Sometimes it can be handy to set up your own repository to prevent from downloading the remote repository over and over again. This tutorial shows how to create a CentOS mirror for your local network. If you have to install multiple systems in your local network then all needed packages can be downloaded over the fast LAN connection, thus saving your internet bandwidth.
Create the Directories:
mkdir -pv /var/www/html/centos/{base,updates}
The Base Repository
Copy the RPMs from the CDs/DVD to /var/www/html/centos/base.
Create the base repository headers:
createrepo /var/www/html/centos/base
The Updates Repository
Select an rsync mirror for updates: check out this list of aviable mirrors: Centos OS Mirror list and these are identified with rsync.
For example: rsync://ftp.belnet.be/packages/centos/
The mirrors share a common structure for updates. Simply append /updates//.
Rsync to create the updates-released repository:
rsync -avrt rsync://ftp.belnet.be/packages/centos/5.0/updates/i386 \ –exclude=debug/ /var/www/html/centos/updates
This will create a complete update repository at /var/www/html/centos/updates/i386. The repodata directory will be created with all of the headers.
Next I would advise to setup a cron job to run the rsync (above). In this manner your repository is kept updated and only new updates and headers will be downloaded to your repository.
Yum Configuration
Edit yum.conf:
vi /etc/yum.repos.d/CentOS-Base.repo
[base]
name=CentOS-$releasever – Base
baseurl=http://192.168.*.*/centos/$releasever/os/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os
#baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5
#released updates
[update]
name=CentOS-$releasever – Updates
baseurl=http://192.168.*.*/centos/$releasever/updates/$basearch/
#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates
#baseurl=http://mirror.centos.org/centos/$releasever/updates/$basearch/
gpgcheck=1
gpgkey=http://mirror.centos.org/centos/RPM-GPG-KEY-CentOS-5
That's it.
