This week Spacewalk was released in version 2.4 after 6 months of development. In summary, about 60 bugs were fixed and some new features were implemented.

The web-interface is now available to other projects as part of the Patternfly framework. The project driven mainly by Red Hat aims at combining beatiful designs …

While registering a client system with a FreeIPA server I recently stumbled upon the following error message:

1# ipa-client-install
2...
3User authorized to enroll computers: admin
4...
5Kerberos authentication failed
6kinit: Cannot read password while getting initial credentials

After wasting quite a lot of time with …

Recently one of my vCenter Server Appliance (vCSA) 5.5 installations was unable to proceed logins anymore. After having a look at the storage consumption I saw that two partitions were filled up:

1# df -h /storage/{core,db}
2Filesystem      Size  Used Avail Use% Mounted on
3/dev/sdb1        20G   20G     0 100% …

Some of you might have recognized that it has been surprisingly quiet on my blog in the last couple of weeks. The reason for this was not that I have not been keen for blogging - rather I was working on something bigger that I'd love to present you today. 🙂

It is nothing less than a book about VMware vSphere named …

After a couple of months or years plenty of storage is wasted on Windows systems and sometime it is not possible anymore to free space by using the well-known procedures. Recently I had this issue on a 5 year old system - the following steps did not help anymore:

• Executuing the Disk Cleanup utility
• Manual cleaning …

Recently I stumbled upon the following error message while creating a DRBD volume on CentOS 7:

1# drbdadm create-md r0
2initializing activity log
3NOT initializing bitmap
4Writing meta data...
5lk_bdev_save(/var/lib/drbd/drbd-minor-0.lkbd) failed: No such file or directory
6New drbd meta data block successfully created …