With Centos 7 come replacement of MySQL with MariaDB.
I was already curious into it and quite happy once it come to new server with Centos.
It’s very easy to use, but I has trouble to raise max_connections to my usual number (I use 10.000 as I connect to DB from many connections).
Here is the solution.
Recently I was creating for somebody empty virtual image based on my actual image. I want to make sure the image will get compressed as much as possible. But I delete there about 1,5 GB of my data.
To make sure the VM will be compressed I needed to fill all empty space with 0.
I found this tool to do that: http://frippery.org/uml/index.html , but it was little bit tricky.
Here is step by step how to proceed: