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86 blog posts in 13 categories

How to Monitor your Database Servers using ClusterControl CLI

In this blog post, we will show you how you can monitoring your database clusters using your terminal and the s9s Command Line Interface.

MySQL on Docker: How to Monitor MySQL Containers with Prometheus - Part 1 - Deployment on Standalone and Swarm

Prometheus is an open-source software for monitoring and alerting, it depends on exporters to ‘scrape’ information from e.g., MySQL running on Docker. In this blog, we’ll see how to deploy the database as well as the monitoring stack with Prometheus and its components. We’ll do this for both MySQL running on standalone Docker containers as well as a Galera Cluster running on Docker Swarm.

Asynchronous Replication Between MySQL Galera Clusters - Failover and Failback

Asynchronous replication places no low latency demands on the network, so it is possible to keep Galera Clusters in sync even when they are thousands of miles apart and utilise low-cost connections. We effectively can achieve a global system of loosely-coupled clusters. However, managing the global state translates into managing failover and failback operations at both node and cluster level.

Galera Cluster Recovery 101 - A Deep Dive into Network Partitioning

Galera automatic node provisioning and membership control simplifies database cluster operation and improves the reliability of its replication technology. In this blog post, we are diving into the Galera recovery process in events where network partitioning happens.

How to Improve Performance of Galera Cluster for MySQL or MariaDB

Galera Cluster comes with many cool features and advantages over traditional asynchronous replication, but these do not automatically translate into higher performance. In this blog post, we will look at what drives MySQL/MariaDB Galera performance, and see how we can get the most out of the cluster.

MySQL on Docker: Running a MariaDB Galera Cluster without Orchestration Tools - DB Container Management - Part 2

So you’ve deployed MariaDB cluster on Docker, what next? What do you do when containers fail or are rescheduled, and IP addresses change? How do you ensure that the database adapts to changes to the underlying container configurations? In this follow-up blog post, we’ll look into cluster management and orchestration of Galera cluster on Docker.

MySQL on Docker: Running a MariaDB Galera Cluster without Container Orchestration Tools - Part 1

Container orchestration tools do not always play nicely with database clusters. In this blog post, we are going to look into how to run a MariaDB Galera Cluster on Docker containers using the standard Docker image on multiple Docker hosts without the help of orchestration tools like Swarm or Kubernetes.

How to Recover Galera Cluster or MySQL Replication from Split Brain Syndrome

Split brain syndrome is a state where a cluster of nodes is partitioned into smaller clusters of equal numbers of nodes, and each cluster believes it is the active cluster. This is a harmful state, as data is changed on a partition, without being replicated to the other. This blog post describes how to prevent a split brain from happening, and what can be done if it does happen.

Watch the Replay: How to Migrate to Galera Cluster for MySQL & MariaDB

Watch the replay of this webinar on how to migrate to Galera Cluster for MySQL & MariaDB. Severalnines Support Engineer Bart Oles walks us through what you need to know in order to migrate from standalone or a master-slave MySQL/MariaDB setup to Galera Cluster.

Deploying Cloud Databases with ClusterControl 1.6

ClusterControl 1.6 comes with tighter integration with AWS, Azure and Google Cloud, so it is now possible to launch new instances and deploy MySQL, MariaDB, MongoDB and PostgreSQL directly from the ClusterControl user interface. This blog post shows you how.

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