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 …

Often configuration files are also updated during the installation of newer RPM packages. Using the package manager yum you're informed about that like this:

1# yum update
2...
3  Updating   : osad-5.11.33-1.el6.noarch                                  13/32
4warning: /etc/sysconfig/rhn/osad.conf created as …

To find out the World Wide Name / World Wide Identifier of a Fibre channel controller under Linux you actually have multiple possibilities.

A very common way is to read the /sys directory. In this virtual file system there are e.g. special files which contain further information about the hardware. Below the folder …

When updating the GRUB2 package on a clean install of CRUX Linux I recently stumbled upon the following error:

1# prt-get update grub2
2...
3Pkgfile: line 28: ./grub-mkfont: No such file or directory"

The solution for this issue was simple - the freetype package was missing. This package is needed for generating …

Recently I had a issue when trying to use the OSA dispatcher integrated in Spacewalk, Red Hat Satellite and SUSE Manager. The software was unable to push actions to registered client systems - it seems that there was a problem with the appropriate service:

1# service jabberd status
2router dead but subsys locked
3sm …

Recently I stumped upon the following error while creating GPG keys for signing self-created RPM packages :

1can't connect to `/home/su-rpmdev/.gnupg/S.gpg-agent': No such file or directory
2gpg-agent[14392]: command get_passphrase failed: Operation cancelled
3gpg: cancelled by user
4gpg: Key generation …

After a recent upgrade from VMware vCenter Server 4.1 to VMware vCenter Server Appliance 5.5 and from ESXi 4.1 to 5.5 I was molested by the following message:

1Uplink redundancy lost on DVPorts: "xxxx/xx ..." Physical NIC vmnic1 is down

Analysing the switches showed that there was no link flapping. This fault …

I was dazzled when I recently saw the following warning message ahile using the vSphere Client:

1Virtual machine disks consolidation is needed

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