What is PCI-Express ? Everyone, and I mean everyone, should pay attention when they do intensive Machine Learning / Deep Learning Training. As I explained in a previous blog post, GPUs have accelerated Artificial Intelligence evolution massively. However, building a GPUs server is not that easy. And failing to create an appropriate infrastructure can have […]
How PCI-Express works and why you should care? #GPU Read More »
Introduction My name is Filip Dorosz. I’ve been working at OVHcloud since 2017 as a DevOps Engineer. Today I want to tell you a story of how we deployed next-gen Ceph at OVHcloud. But first, a few words about Ceph: Ceph is a software defined storage solution that powers OVHcloud’s additional Public Cloud volumes as
Journey to next-gen Ceph storage at OVHcloud with LXD Read More »
This post is another part of our list of short posts pinpointing specific cases OVHcloud has dealt with, both preparing for and during the migration. Here, we tell a story of how sometimes, a little unexpected behaviour can lead to a bug fix in a software program used by millions of people around the world.
Another day in ProxySQL life: sharing is caring Read More »
In our previous blog post about observability, we explained how to build a comprehensive view of how your SQL workloads behave, and the many reasons why it is important to have this view. In this blog post, we will take a closer look into the four types of SQL query, and how they can impact
Explaining slow queries to my manager Read More »
In our previous articles, we explained why we had to move 800,000 databases from one datacentre to another, 300 kilometres away. So here we are… We did it!Now we will focus on a very important goal of any migration. From your point of view, as a customer, you must see… Nothing! I understand this completely,
migrate-datacentre –quiet: How do we seamlessly migrate a datacentre? Read More »
Our team of database administrators used to be overwhelmed by our developers’ needs. Picture this: we had only 1.5 database admins per more than 400 tech people (DevOps, developers etc.), with only 24 hours in a day! This was a perfect use-case for observability. But what is observability, apart from a buzzword? To me, observability is
Improve your SQL workload with observability Read More »
In our previous articles, we explained why we had to move 800,000 databases from one datacentre to another, 300 kilometres away. So here we are… My team and I did it! It was a real brain-burner, so I hope our story will help you to address more of the huge technical projects we love to
How to win at the massive database migration game Read More »
In our tour of OVHcloud’s Internal Databases Infrastructure, we showed you what our infrastructure looks like. This post will be about SQL replication, why it matters, and how we use it at OVHcloud. Nodes are not enough: they have to work together. To do that, we rely on a feature called replication to keep data
Database replication 101 Read More »
Today, most applications rely directly or indirectly on databases. I would even take a bet and say that a large portion of those are relational databases. At OVHcloud, we rely on several dozens of clusters hosting hundreds of databases to power thousands of applications. Most of those databases power our API, host billing information and
OVHcloud’s internal databases infrastructure Read More »
In our series of articles about migrating web hosting infrastructure from Paris to Gravelines (the first of which is here), we neglected to mention the databases. This is however a very important part, with 800,000 databases to be migrated! In these new series of posts, we will tell you about our experience with web hosting
Web hosting – How do our databases work? Read More »
