Author Archives: Lars Vogdt

About Lars Vogdt

This is the private blog space of Lars Vogdt, the topics will be in first place work related.

Fixing virtual disk problems

What if your grub loader on a virtual machine is broken – or you need to repair or resize a filesystem in one of your virtual machines? You want to check the storage of your virtual machines on your virtualization … Continue reading

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RackTables: Permissions

Once you figured out how it works, everything is easy – right? As it took me some minutes and some googl’ing to find out how the permission system (Main page -> Configuration -> Permissions) in Racktables work, here is my … Continue reading

Posted in Infrastructure, network | Tagged , , , | 2 Comments

Datacenter in a box

Today I want to tell you something about my “datacenter in a box” setup, that I’m currently running on my Root Server at Hetzner. The base system is a bare metal EX root server with 32GB RAM and 2x2TB hard … Continue reading

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Piping commandline output through while loop

As I often forget the exact syntax – here is a working example (using osc to search for build results of a specific package in all projects that have this package): while read line ; do case $line in [a-z]*) … Continue reading

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Trap: failover bonding and miimon on directly connected machines

For HA reasons, I setup a cluster of two nodes that are using “bond0” for the external networks and “bond1” for the communication between the two hosts. As I setup the machines in the standard way, the bonding module options … Continue reading

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Running csync2 with different hostnames

The paper for csync2 is a bit unclear to me, when it comes to hosts with different hostnames for two or more interfaces. I often ended up in trying to solve my problem in the following way, that luckily solves … Continue reading

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LDAP with TLS and CA certificates

If you try to setup your own CA, you might notice that not all applications support your new, self signed certificate out of the box. One example I like to show here is Apache AuthLDAP. Prerequisites: installed your certificates in … Continue reading

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