More than a year ago, I upgraded my home lab to get started with vSAN. Back then I decided to go for a small hardware upgrade and already feared that the new resources will lack again very soon. And of course that happened after a short time, when I installed the vSAN cluster.

Back then I already heard about the Xeon D …

When deploying vCenter Server 6.5 recently, I stumbled upon an issue that I was able to reproduce for the versions 6.5c and 6.5d. When deploying the appliance using the vCSA UI installer, the second stage always crashed with an error like this:

1Unable to connect to vCenter Single Sign-On: Failed to connect to SSO; …

The last couple of years I spent a lot of time in managing Linux systems with Spacewalk and Red Hat Satellite 5. Because the application was superseded by the vendor, I investigated on migrations to the successor.

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Recently, I had to remove a SAN LUN on a physical Enterprise Linux system. The first step was to alter the multipath service configuration file (/etc/multipath.conf) and make the daemon reload its configuration:

1# vi /etc/multipath.conf
2...
3ESC ZZ
4
5# service multipathd reload

Afterwards, the device was removed …

Foreman, Katello and Red Hat Satellite 6 users have multiple possibilities to monitor infrastructure health. Beside the Foreman host, also managed systems and defined software content are worth monitoring.

Foreman dashboard

Foreman/Katello and Red Hat Satellite offer a dashboard with some widgets that can be used for …

GitLab can utilize LDAP to authenticate against a variety of directory services such as Microsoft Active Directory Domain Services or FreeIPA and Red Hat Identity Management. This post describes configuring and integrating into FreeIPA.

By clicking Identity > User Groups > Add within the FreeIPA interface, an …

Photon OS is minimalistic RPM-based Linux distribution which is focussed on running Docker containers. It was optimized for VMware platforms (Workstation, Fusion, vSphere, vCloud Air) - e.g. its Linux kernel offers a caching mechanism optimized for vSphere.

Another characteristic is the customized package manager tdnf …