The issue Lately we’ve been experimenting with puppet and setting up our frontend webservers with it. Our junior sysadmin was setting up things on a server that already had frontend database virtualized and everything was going smoothly, to the part, when he had to setup whole webserver from scratch. I was working with Percona’s XtraDB MySQL Cluster in
Overview We use Xen server on our development server and I decided, it’s time I start making full snapshots of my VM’s. So far we’ve done data backup only, mainly because of storage limitations. Since we got the new server, I have much more disk space now, so I would like to backup whole VM’s.
What is TokuDB? TokuDB is a storage engine for MySQL and MariaDB that dramatically improves the performance of large databases (typically 50 GBs or larger). By replacing 40-year-old B-tree technology with patented Fractal Tree® technology, TokuDB speeds indexing by 10x or more, and reducing the size of the database by upt o 90%. Because of
Introduction We know quite few programs that help us identify I/O usage in Linux. In order to identify exactly what is writing and which process, we need to use quite few commands, to make sure we know exactly what is going on. I will show you few useful commands that will help you find your
Calm yourself down Congratulations, you managed to accidentaly remove useful logical volume! No worries! Calm down, it’s all fine, we’ll get it back in few simple steps. Luckily, LVM archives all removed logical volumes when you make lvremove. In order to get it back we can use LVM’s native commands. All we have to do,