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

Confused about write barriers on file systems…

As ext3 is already known as a very robust file system why is the default mount option still barrier=0? The problem is LVM and the device mapper. They¬† do not support barriers. When mounting ext3 on a LV, the option barrier=1 it¬†should be ignored and a warning written. So far so good. Trying this brings a lot of confusion. According to a Red Hat bugzilla entry one should get a warning, but no signs of that neither in /var/log/messages nor ….Read More