With the help of Fedora EPEL repo, we can easily install many popular packages. Currently the EPEL repo for RHEL 7 has more than 4,000 packages already. Then, how can we install EPEL repo on RHEL 7? Well this step should work…

I would like yum to update all system packages except the mysql related packages. How can I prevent yum from updating mysql on a CentOS/RHEL system? There are basically two ways, Way 1: edit yum config file /etc/yum.conf, and add this…

Yum is commonly used in major RPM based Linux distributions such as CentOS, Redhat and SuSE, it can help us perform automatic dependency checking. If you’d like to only download the RPM packages via yum and do not install/update them,…

I’m runing RHEL/CentOS for a group of database servers, and they mainly use MySQL for productive services. Recently I noticed that MySQL’s new feathers and bug fixes that comes from system updates make little sense to our needs, so I’m…

I just successfully updated my Dell PowerEdge 1850 from CentOS 4.8 to CentOS 5.4, luckily the issues I faced were not so rare. The steps I used are listed below, may it helpful for you as well! Although this post…

CentOS community annouced the availability of CentOS-5.4 for i386 and x86_64 Architectures this week. It’s based on the upstream release Redhat Enterprise Linux 5.4.0 and includes packages from all variants including Server and Client. This is just an announcement email,…

How can I disable YUM automatic update completely? In some old versioned system, YUM auto-update feature comes as an extension named “yum-autoupdate”, and it contains runlevel scripts and scheduled crontab scripts. 

I made a mistake and added additional repo under CentOS / RHEL 5.x server. Now when I try to upgrade packages it gives me out broken ependencies / missing dependency error. How do I skip broken packages and apply updates…

Recently I was working on a Dell PE1950 at work and decided to get Xen installed, so that I can create some virtual servers for our developers. Finding out that Xen in Redhat Enterprise Linux is not so easy to…