Migrating from CentOS8 to RHEL8

There are various reasons why to migrate from CentOS to RHEL. Quicker access to bugfixes and new minor releases as well as having a fully commercially supported system. Unfortunately most providers do not have an option to install RHEL but CentOS instead. There are different tutorial on the net how to migrate from RHEL to CentOS but almost no information about the other way round. It is quite simple and at the end of the day you have only Red ….Read More

Migrating from CentOS7 to RHEL7

There are various reasons why to migrate from CentOS to RHEL. Quicker access to bugfixes and new minor releases as well as having a fully commercially supported system. There are different tutorial on the net how to migrate from RHEL to CentOS but almost no information about the other way round. It is quite simple and at the end of the day you have only Red Hat Packages installed. In 2012 I wrote an article about Migrating from CentOS6 to ….Read More

Migrating from CentOS6 to RHEL6

There are different tutorial on the net how to migrate from RHEL to CentOS but almost no information about the other way round. It is quite simple and at the end of the day you have only Red Hat Packages installed. you need to copy the following packages from a Red Hat medium and install them: yum localinstall \ rhn-check-1.0.0-87.el6.noarch.rpm \ rhn-client-tools-1.0.0-87.el6.noarch.rpm \ rhnlib-2.5.22-12.el6.noarch.rpm \ rhnsd-4.9.3-2.el6.x86_64.rpm \ rhn-setup-1.0.0-87.el6.noarch.rpm \ yum-3.2.29-30.el6.noarch.rpm \ yum-metadata-parser-1.1.2-16.el6.x86_64.rpm \ yum-rhn-plugin-0.9.1-40.el6.noarch.rpm \ yum-utils-1.1.30-14.el6.noarch.rpm \ sos-2.2-29.el6.noarch.rpm \ Then ….Read More

CentOS6 to be released in the next few weeks

According to an interview with Karanbir Singh – a major contributor to the project – it is just a question of a few weeks until we can expect CentOS6 to be released. CentOS is extremely important for the RHEL community, it is a playground for trying out new stuff before getting into an engineering phase with the Red Hat supported RHEL. Lets have fun with it…

Set up a Red Hat Directory Server and Kerberos Part I

Kerberos and LDAP are today’s way of single sign on. It is platform independent and supported by a wide range of applications. Together with the Red Hat Directory Server (also available as CentOS Directory Server and 389 Directory Server from Fedora) you can build a neat identity management infrastructure. Setting up the Directory Server However there are some pitfalls when installing such a integrated solution. Installing redhat-ds is quite easy, just ensure you define your planned LDAP Namespace and default ….Read More

Managing CentOS with Spacewalk

Red Hat RHN Satellite In 2003 Red Hat released its RHN Satellite server as a closed source management tool for RHEL and only for RHEL (okay, a legacy support for managing Solaris is available). The satellite is very useful tool for managing systems. Unfortunately it has a quite expensive price tag on it. According to the Red Hats RHN FAQ the bill is USD 13,500/year. Additionally to the RHN satellite subscription fee you need at least a subscription for the ….Read More