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.

MySQL Master – Master recovery

As it happened the 2nd time now that I need to fix a problem with a master-master MySQL (MariaDB) setup on one of my machines, here is a step by step tutorial to fix it. I asume that you already … Continue reading

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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

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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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