Kubernetes has been a big trend for a while now, particularly well-suited for microservices. Running your main databases on Kubernetes is probably NOT what you are looking for. However, there’s a niche market for them. My colleague Stephen Thorn did a great job explaining this in The Criticality of a Kubernetes Operator for Databases. […]Read more
A few days ago, a customer got in touch asking how they could use Percona Monitoring and Management (PMM) to monitor the roles played by each node in an InnoDB cluster. More specifically, they wanted to check when one of the nodes changed its role from Primary to Secondary, or vice-versa. PMM allows for […]Read more
We recently helped migrate a production PostgreSQL database running on a given DBaaS platform… to another DBaaS platform. When it comes to vendor “lock-in”, some providers are easier (and even friendlier) to deal with than others, but it is never a straightforward process. While in a traditional environment we would usually approach this problem […]Read more
When a MongoDB server crashes you will usually find what is called a “stack trace” in its log file. But what is it and what purpose does it have? Let’s simulate a simple crash so we can dig into it.
Crashing a test server
In a test setup with a freshly installed MongoDB server, we connect […]
A couple of weeks ago I presented at Percona University São Paulo about the new features in PostgreSQL that allow the deployment of simple shards. I’ve tried to summarize the main points in this post, as well as providing an introductory overview of sharding itself. Please note I haven’t included any third-party extensions that […]Read more