In this post, i will show on how to install and configure yum-priorities on CentOS 5 or RHEL 5 Linux server. Theoretically, the repositories with the lowest numerical priority number have the highest priority. This is one of the method to prevents mistakes such as accidentally running yum upgrade with everything. This steps has been tested on CentOS 5.7, but it may working on CentOS 5.1, CentOS 5.2, CentOS 5.4, CentOS 5.5, CentOS 5.6 and RHEL 5.
1. To Install the yum-priorities, simply run this command :
[root@CentOS57 ~]# yum install yum-priorities -y Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * base: mirror.oscc.org.my * extras: mirror.oscc.org.my * rpmforge: ftp-stud.fht-esslingen.de * updates: mirror.oscc.org.my Setting up Install Process Resolving Dependencies --> Running transaction check ---> Package yum-priorities.noarch 0:1.1.16-21.el5.centos set to be updated --> Finished Dependency Resolution Dependencies Resolved ==================================================================================================== Package Arch Version Repository Size ==================================================================================================== Installing: yum-priorities noarch 1.1.16-21.el5.centos base 16 k Transaction Summary ==================================================================================================== Install 1 Package(s) Upgrade 0 Package(s) Total download size: 16 k Downloading Packages: yum-priorities-1.1.16-21.el5.centos.noarch.rpm | 16 kB 00:00 Running rpm_check_debug Running Transaction Test Finished Transaction Test Transaction Test Succeeded Running Transaction Installing : yum-priorities 1/1 Installed: yum-priorities.noarch 0:1.1.16-21.el5.centos Complete!
2. After the plugin is installed, make sure that it is enabled on /etc/yum/pluginconf.d/priorities.conf file.
[root@CentOS57 ~]# cat /etc/yum/pluginconf.d/priorities.conf [main] enabled = 1
If enabled = 0, you can enabled it using vi editor as below :
[root@CentOS57 ~]# vi /etc/yum/pluginconf.d/priorities.conf
3. With the plugin enabled, you may add priorities to the target repositories by adding the following line :
priority=N
Where N is an integer from 1 to 99. The lower the number the more important it is, so CentOS-Base.repo must always the lowest.
[root@CentOS57 ~]# vi /etc/yum.repos.d/CentOS-Base.repo
Add this line on base repo :
priority = 1
# CentOS-Base.repo # # The mirror system uses the connecting IP address of the client and the # update status of each mirror to pick mirrors that are updated to and # geographically close to the client. You should use this for CentOS updates # unless you are manually picking other mirrors. # # If the mirrorlist= does not work for you, as a fall back you can try the # remarked out baseurl= line instead. # # [base] name=CentOS-$releasever - Base mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=os #baseurl=http://mirror.centos.org/centos/$releasever/os/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 priority = 1 #released updates [updates] name=CentOS-$releasever - Updates mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updates #baseurl=http://mirror.centos.org/centos/$releasever/updates/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 #additional packages that may be useful [extras] name=CentOS-$releasever - Extras mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras #baseurl=http://mirror.centos.org/centos/$releasever/extras/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 #additional packages that extend functionality of existing packages [centosplus] name=CentOS-$releasever - Plus mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplus #baseurl=http://mirror.centos.org/centos/$releasever/centosplus/$basearch/ gpgcheck=1 enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5 #contrib - packages by Centos Users [contrib] name=CentOS-$releasever - Contrib mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=contrib #baseurl=http://mirror.centos.org/centos/$releasever/contrib/$basearch/ gpgcheck=1 enabled=0 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-5
4. As an example, another 3rd party repository is RPMforge. Follow this steps to Add the RPMforge Repository on CentOS 5/RHEL 5 Linux Server :
How to Add the RPMforge Repository on CentOS 5/RHEL 5 Linux Server
Open the RPMforge configuration file and insert “priority = 5” after “enabled = 1” in the [rpmforge] section :
[root@CentOS57 ~]# vi /etc/yum.repos.d/rpmforge.repo
In this case, i will add the fifth highest possible priority which is “priority=5” :
### Name: RPMforge RPM Repository for RHEL 5 - dag ### URL: http://rpmforge.net/ [rpmforge] name = RHEL $releasever - RPMforge.net - dag baseurl = http://apt.sw.be/redhat/el5/en/$basearch/rpmforge mirrorlist = http://apt.sw.be/redhat/el5/en/mirrors-rpmforge #mirrorlist = file:///etc/yum.repos.d/mirrors-rpmforge enabled = 1 priority = 5 protect = 0 gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-rpmforge-dag gpgcheck = 1 [rpmforge-extras] name = RHEL $releasever - RPMforge.net - extras baseurl = http://apt.sw.be/redhat/el5/en/$basearch/extras mirrorlist = http://apt.sw.be/redhat/el5/en/mirrors-rpmforge-extras #mirrorlist = file:///etc/yum.repos.d/mirrors-rpmforge-extras enabled = 0 protect = 0 gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-rpmforge-dag gpgcheck = 1 [rpmforge-testing] name = RHEL $releasever - RPMforge.net - testing baseurl = http://apt.sw.be/redhat/el5/en/$basearch/testing mirrorlist = http://apt.sw.be/redhat/el5/en/mirrors-rpmforge-testing #mirrorlist = file:///etc/yum.repos.d/mirrors-rpmforge-testing enabled = 0 protect = 0 gpgkey = file:///etc/pki/rpm-gpg/RPM-GPG-KEY-rpmforge-dag gpgcheck = 1
