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Xanda - /dev/project - Add a new yum repository to install software under CentOS / Redhat Linux

CentOS / Fedora Core / RHEL 5 uses yum for software management. Yum allows you to add a new repository as a source to install binary software.

Understanding yum repository

yum repository configured using /etc/yum.conf file. Additional configuration files are also read from the directories set by the reposdir option (default is /etc/yum.repos.d and /etc/yum/repos.d.

RPMforge repository

Usually repository carries extra and useful packages. RPMforge is one of such repository. You can easily configure RPMforge repository for RHEL5 just by running following single RPM command:

# rpm -Uhv http://apt.sw.be/packages/rpmforge-release/rpmforge-release-0.3.6-1.el5.rf.i386.rpm

For 64 bit RHEL 5 Linux, enter:

# rpm -Uhv http://apt.sw.be/packages/rpmforge-release/rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm

Now you can install software from RPMforge.

How do I install 3rd party repository manually?

Let us say you would like to install 3rd party repository from foo.nixcraft.com. Create a file called foo:

# cd /etc/yum.repos.d
# vi foo

Append following code:

[foo]
name=Foo for RHEL/ CentOS $releasever - $basearch
baseurl=http://foo.nixcraft.com/centos/$releasever/$basearch/
enabled=1
gpgcheck=1
gpgkey=http://foo.nixcraft.com/RPM-GPG-KEY.txt

Save and close the file.

Where,

  • [foo] : Repository name i.e. The [main] section must exist for yum to do anything.
  • name=Foo for RHEL/ CentOS $releasever - $basearch : A human readable string describing the repository name
  • baseurl=http://foo.nixcraft.com/centos/$releasever/$basearch/ : Must be a URL to the directory where the yum repository’s ‘repodata’ directory lives
  • enabled=1 : Enabled or disabled repo. To disable the repository temporarily, set the enabled to 0
  • gpgcheck=1 : Security feature, use GPG key
  • gpgkey=http://foo.nixcraft.com/RPM-GPG-KEY.txt : GPL file location

Also you need to import the gpg key for the repository as follows:

# rpm --import http://foo.nixcraft.com/RPM-GPG-KEY.txt

Now you are ready to install software from foo repository. For further information refer to yum.conf man page:

$ man yum.conf
$ man yum

Hope this tip will help you to configure repository as and when required.

[The content of this page is taken from Cyberciti. Feel free to visit the original site because who knows the original author might update the content from time to time]