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CentOS 5.4 released

November 3rd, 2009 · 5 Comments

Almost two months after RHEL5.4, Centos 5.4 was released on the 21st October. This version includes various changes into the virtualization field and it includes support for KVM (kernel-based virtual machine) hypervisor and the Xen hypervisor.
Also this release features many bug fixes and security updates, and should be an easy upgrade for users running centos5.x:
yum [...]

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Tags: Centos

CentOS 4.8 finally released!

September 1st, 2009 · No Comments

After a long development time, Centos 4.8 was finally released on the 21st August. This is a good thing that after the latest problems between the centos developers, they were able to pull this out finally and now be able to focus on the upcoming 5.4 release.
There are no major changes in this update, mostly [...]

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Tags: Centos · Security · sysadmin

My First Amazon EC2 Setup (CentOS AMI)

June 29th, 2009 · No Comments

Here’s my first try working with Amazon Web Services. Covered tasks are the following:
- getting familiar with AWS, specially EC2 and S3.
- working with EC2 instance using CentOS image – search, start/stop, and do some customization of an instance
- create AMIs (private) and start instance from it.
- S3 buckets – upload files.
I based my [...]

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Tags: Centos · HowTo · Storage · cloud computing

Install GNUPG PHP extension in Cpanel

May 21st, 2009 · No Comments

Here’s my quick howto on installing GNUPG PHP Pecl extension (pecl docs) in Cpanel. Please note that this covers only the installation process and no further details on setting up gpg keys or using the function with extension or sample PHP scripts.
Installation process is very straightforward provided you met the requirements like php-pear, gnupg, [...]

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Tags: Centos · Installation · cpanel

rhel/centos x86_64 and i386 packages mess…

May 19th, 2009 · 2 Comments

Anyone running centos/rhel x86_64 systems has probably noticed that redhat has a strange way to install a mix of i386 and x86_64 rpms on such a systems. This is how redhat is using the 64bit architecture in a mixed way to be able to support also i386 applications. This is completely different from how for [...]

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Tags: CLI · Centos · sysadmin

HowTo recover from a corrupt rpm database

February 10th, 2009 · 5 Comments

RedHat based systems (rhel/fedora/centos) use rpm/yum to install and upgrade packages. If the rpm database gets corrupted in some way it will break all the functionality of rpm and other tools that rely on it like yum for example. We have seen this either showing some errors on the console, or most frequently just by [...]

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Tags: Centos · sysadmin

HowTO change the timezone on RHEL/CentOS

December 16th, 2008 · 2 Comments

Linux systems traditionally keep the definition of their timezone in /etc/localtime. This is a binary file with the timezone info, and if we want to change it we need to find the appropriate timezone file from /usr/share/zoneinfo and copy it over the one from /etc or just link to it. Once you change it, you [...]

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Tags: CLI · Centos

CentOS 5.2 Upgrade

June 25th, 2008 · No Comments

The CentOS team just released their latest version of CentOS-5.2, a minor upgrade for the Centos-5 release. This is based on the upstream release RHEL 5.2.0 and includes packages from all variants including server and client repositories.
Any system running CentOS-5 (either 5.0 or 5.1) can be upgraded by just running:
yum upgrade
that will bring in the [...]

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Tags: Centos