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According to puppetlabs one should stay with ruby 1.8.7 when running puppet - Puppet FAQ and supported Ruby versions.

Most things work, but the CA and SSL has an issue when running ruby 1.9.x - Mixing and matching ruby versions for puppetmasterd and puppetd causes a "certificate verify failed" error.

The solution is to create a symlink in the ssl certs directory as described here.

When you run puppet 2.7.12 or higher you will see a warning message, telling you that dynamic variable scope look-up will be removed in puppet 2.8.x.

What to do if you have variables defined in a node definition?

1. switch to hiera
2. write a mockup

This is the first post regarding Debian/GNU Linux running Xen 4.0 on a new piece of hardware.

This posting will cover base OS installation:
- Preparation/Partitioning
- Base Debian/GNU Linux installation on Dom0
- Xen packages installation
- Make Xen-Kernel default for Grub2

Upcoming posts will cover the following items:

- Installation of Debian/GNU Linux as DomU
- Installation of Windows Vista as DomU (using HVM)
- Installation of OpenSolaris 11 as DomU (using HVM)
- Installation of BDS systems as DomU

I was eagerly waiting for KDE 4.2.

Compared to Versoin 4.1 the new version seems far more stable.

The only "semi-official" way to install KDE 4.2 on Lenny is by putting experimental in your sources list and make use of apt-pinning.

Personally I do not like apt-pinning.

Therefor I made a backport.

It will always happen, when you have left your installation CD at home: diskutil is reporting errors which have to be fixed.

But: you can not run the repair when you have booted from the disk.