It is possible that RHEL7 channels aren't available to Red Hat Satellite even though you're having a valid Red Hat Enterprise Linux subscription.

The appropriate software channel (rhel-x86_64-server-7) is not part of the list of available channels - it also cannot be downloaded manually:

1# satellite-sync …

Beside Linux systems also Oracle Solaris hosts can be managed using Spacewalk and Red Hat Satellite - a cool feature that is often forgotten. (Update: since Spacewalk 2.2 from 07/16/2014 this function is "deprecated" which means that it might be removed in one of the following releases)

Bigger companies which …

It is possible that the following error message is displayed on client systems when software packages are distributed using Spacewalk, Red Hat Satellite or SUSE Manager:

1Error while executing packages action: empty transaction [[6]]

This issue rests on the database of the management suite. After a while (or after a …

If you're maintaining your system landscape with Spacewalk, Red Hat Satellite or SUSE Manager you might also see many old entries while having a look in the action list after a while:

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A couple of days ago I spent a lot of time with Kickstart under Spacewalk and Red Hat Satellite and was looking for a possibility for creating Kickstart Trees for CentOS comfortably.

Radomly I stumbled upon a blog article which served a useful script. That inspired me to create a more handy python script for that. …

Sometimes it is sufficient to know which RPM GPG-Keys have been imported. You can get this information with the following command:

1# rpm -qa --qf '%{VERSION}-%{RELEASE} %{SUMMARY}\n' gpg-pubkey*
2c105b9de-4e0fd3a3 gpg(CentOS-6 Key (CentOS 6 Official Signing Key) <centos-6-key@centos.org>)
3 …

There are several OpenJDK versions for running Java applications under Enterprise Linux. This is adequate for the most applications but in some cases you might need the proprietary version by Oracle (e.g. because of support matrices of commercial third-party software).

On the JRE webseite you can find tarball and RPM …

If you want to create and sign RPM packages for Enterprise Linux 5 and 6 you will have to consider some things while creating and using the GPG key so that EL5 systems can also use the signed packages.

If you create a GPG key using the standard settings and sign a RPM package under EL6 you will get the following error …

During a recent system update that I started using Spacewalk I stumbled upon the following error message:

1Fatal error in Python code occurred [[6]]

After some troubleshooting I came up that I upgraded my spacewalk server to the most recenet release a couple of days ago. During this update I forgot to update also the …