Severalnines Blog
The automation and management blog for open source databases

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210 blog posts in 13 categories

6 Common Failure Scenarios for MySQL & MariaDB, and How to Fix Them

Database failures can happen at different levels, from schema corruption on an individual server to hardware or even an entire datacenter going down. So how do we troubleshoot and fix these? In this blogpost, we will walk through 6 different failure scenarios and see how we recovery from them.

Controlling Replication Failover for MySQL and MariaDB with Pre- or Post-Failover Scripts

Databases are a part of a wider mesh of infrastructure components, and as such, failover usually has some impact on more than just the database. Therefore, the failover software needs a mechanism to orchestrate changes across the infrastructure. This blog post describes how ClusterControl can be integrated with external infrastructure and tools, through the use of scripts executed during failover process.

How to Control Replication Failover for MySQL and MariaDB

Automated failover is a critical functionality in a MySQL or MariaDB replication setup, involving master-promotion and reslaving. Now, not all slaves are good master candidates, so how do you control which node gets picked? This blog introduces whitelists and blacklists.

How to perform Schema Changes in MySQL & MariaDB in a Safe Way

This blog describes best practices to make your database schema changes in MySQL and MariaDB flawless. We will walk you through different scenarios and recomment some approaches for each.

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.

New Webinar: Disaster Recovery Planning for MySQL & MariaDB with ClusterControl

Join Vinay Joosery, CEO at Severalnines, on June 24th for this new webinar during which he’ll explain key disaster recovery concepts and walk us through the relevant options from the MySQL & MariaDB ecosystem in order to meet different tiers of disaster recovery requirements; and learn how ClusterControl can help fully automate an appropriate disaster recovery plan.

New Whitepaper: Disaster Recovery Planning for MySQL & MariaDB

Wondering about disaster recovery (DR) planning for MySQL and MariaDB? Unsure about RTO and RPO? Should you have a secondary datacenter? How about DR in the cloud? Well, this is the resource for you. In this white paper, we’ll explore DR concepts and discuss the different options available from the MySQL & MariaDB ecosystem for meeting different levels of DR requirements.

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.

Watch the Webinar Replay: MySQL & MariaDB Performance Tuning for Dummies

Tuning a database and the underlying OS is one of the key tasks when managing a database. The goal is to avoid overutilization or underutilization of the available resources.

In this webinar replay, we give you a crash course in performance tuning for MySQL & MariaDB databases.

Schema Management Tips for MySQL & MariaDB

Schema changes are not popular among database ops folks. They can be quite cumbersome in MySQL and MariaDB, and there are risks to the data as well as the availability of the database.

This blog describes the different types of schema change operations you can perform on MySQL and MariaDB, and presents some best practices to minimize disruptions to your operations.

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