Why should you use Galera?
Why should you use Galera instead of the classical MySQL replication!
Ceph cli output analysis
Brief analysis of the ceph -s command :)
Setup Galera with SST XtraBackup method
Ceph benchmarks
The time has come to perform some benchmark with Ceph. You expect (or not), they are there, my Ceph’s benchmarks!
Ceph: maintenance mode, use case and common operations
Quick tips about how to manage a production environement. A simple use case here put your ceph journal on a SSD on a production cluster while clients are writting.
Ceph admin socket
The release of the first stable version of Ceph brought a lot of improvment at admin socket level. This is a really useful command that you should use.
Ceph tip: build your monitor map
If you want to change or rebuild a new set of monitor servers, you will need to manipulate the monmap. This monmap is exchange between every monitors.
Multi MySQL instances with Galera
No! This article is not about Ben-Hur or some other ancient Rome’s history facts. It’s yet another article about Galera, I don’t introduce Galera anymore. This how-to will help you to run multiple MySQL instance replicated thanks to Galera.
OpenStack: Auto assign floating IP
It can be really handy to auto assign floating IP addresses to every new instance.
Corosync: Redundant Ring Protocol
Putting a Lord of the Rings picture could have been too cliché, so I opted for this… RRP abbreviation stands for Redundant Ring Protocol. A way to achieve HA on top of bonded interface.