Severalnines Blog
The automation and management blog for open source databases

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108 blog posts in 13 categories

What's New in MariaDB Cluster 10.4

This blog provides an overview of the new features and functions of MariaDB Cluster 10.4. Based on Galera Cluster from Codership, MariaDB Cluster is a synchronous multi-master database cluster that runs on Linux.

What's New in MariaDB 10.4

MariaDB 10.4 will soon be released as production-ready. In this blog post, we’ll go through some of the most important features that MariaDB 10.4 will bring to us.

How to Automate Migration from Standalone MySQL to Galera Cluster using Ansible

Database migrations are painful, as they involve a lot of steps - from creation of the target infrastructure to migrating schema and data, and oh.. a lot of testing. Some of the steps can be automated though, you can rely on Ansible. This blog post presents a playbook that can be used to assist in the process of migrating to Galera Cluster.

Database-Aware Load Balancing: How to Migrate from HAProxy to ProxySQL

HAProxy is a great piece of software, but it may just not be enough for more demanding users and environments. How do you migrate from HAProxy to ProxySQL? This blog post explains the process and shows how ClusterControl can help.

What’s New in ProxySQL 2.0

ProxySQL 2.0 has been released recently with quite a few interesting features, including causal reads, SSL for frontend connections and native support for Galera Cluster. In this blog post, we will explore these new features.

Benchmarking Manual Database Deployments vs Automated Deployments

Good system administrators and devops hate performing mundane tasks and constantly look for ways at automating themselves out of the job. There are plenty of automation tools out there to help the cause. But if automation is a no brainer, why aren’t more people doing it? In this blog post we compare three ways of deploying a MySQL Galera cluster - manual, Ansible playbook and ClusterControl.

Master High Availability Manager (MHA) Has Crashed! What Do I Do Now?

How do I ensure that MHA (Master High Availability Manager) will always perform the failover for me? What would happen if it crashes? This blog post will answer your questions.

An Introduction to Time Series Databases

Time-series databases have emerged as a best-in-class approach for storing and analyzing huge amounts of data generated by users and IoT devices.

But what are time-series databases? Why have they become so important in the database landscape? In this blog post, we try to shed some light on the subject.

An Introduction to Database High Availability for MySQL & MariaDB

These days high availability is a must for any serious deployment. Long gone are days when you could schedule a downtime of your database for several hours to perform a maintenance. Making a database environment highly available is one of the highest priorities nowadays alongside data integrity. For a database, which is often considered the single source of truth, compromised data integrity can have catastrophic consequences.

Dealing with Unreliable Networks When Crafting an HA Solution for MySQL or MariaDB

Networks may not be always stable or reliable, but your database clusters have to. This blog discusses the things to keep in mind when designing an HA solution for MySQL or MariaDB, deployed across potentially unreliable networks.