Today I’d like to introduce a small, but pretty useful feature of nameservers using BIND as an example. Delivering different answers for different IP ranges. Sure, this might sound strange, but if you dig into that, it’s pretty useful.
People asked me way too often on how to test new BTRFS features – a reason for me to do this article. It’s nothing special, but you have two possibilities to do it:
The ESXi server uses self-signed ssl certificates by default. As you know, this isn’t really what I prefer, especially since I am working with CAcert certificates. But sadly there is no nice GUI solution for replacing those certs and so I was forced to take a dive into the console world of vmware once again, looking for the […]
My old server machines are too noisy – which is an undeniable fact and the reason for consolidating machines. It was a decision which didn’t make me happy, but logic told me to do so and offered a new challenge to me. The main problem was separating services in a way they don’t bite each other. My solution […]
Using XFS means, that you have to deal with fragmentation of your files. Disregarding fragmentation, XFS is a wonderful filesystem which never caused any problems here. To check fragmentation, we use the xfs-debug tool in read-only mode: xfs_db -c frag -r /dev/sdX# At my server it would look like that: stargazer ~ # xfs_db -c frag -r /dev/sda7 […]