Severalnines Blog
The automation and management blog for open source databases

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27 blog posts in 13 categories

High Availability on a Shoestring Budget - Deploying a Minimal Two Node MySQL Galera Cluster

Learn how to set up a Galera cluster with just 2 nodes and use Garbd to retain high availability.

How to Migrate from MSSQL to MySQL

Migrating from proprietary engines into open source engines is a trend that is growing in the industry. In this blog we’ll see what is needed to move from Microsoft SQL Server to MySQL and why and how to do it.

How to Migrate MySQL from Amazon EC2 to your On-Prem Data Center Without Downtime

Database migrations are a pain. They often require maintenance windows and can be a cause of downtime. In this blog, we will see how we can migrate a MySQL database from Amazon EC2 to an on-premise datacenter without any downtime whatsoever.

PostgreSQL High Availability with Master-Slave & Master-Master Architectures

Database servers can work together to allow a second server to take over quickly if the primary server fails (high availability), or to allow several computers to serve the same data (load balancing).

For HA PostgreSQL configurations we can have several architectures, but the basic ones would be master-slave and master-master architectures.

Top GUI Tools for PostgreSQL

Using a GUI is not a must, but it can be useful in some cases. In this blog, we'll see some advantages and warnings about the use of these tools, as well as do a short review of some of the most commons GUI tools for PostgreSQL.

Deploying and Managing PostgreSQL 11: New in ClusterControl 1.7.1

A few days ago was the release of a new version of ClusterControl, the 1.7.1, with several new features, including for PostgreSQL. In this blog, we will see how to deploy PostgreSQL 11 version using ClusterControl. We’ll also check out the new backup verification feature that you can use to automatically test your backups.

PostgreSQL on the Rise: 2018 Postgres Findings & 2019 Trends

PostgreSQL has seen real growth in the past few years, getting closer and closer to MySQL, which continues to be the world’s most popular open source database. In this blog we explore what’s been happening with PostgreSQL in 2018 and some predictions for the future.

How to Upgrade PostgreSQL10 to PostgreSQL11 with Zero Downtime

The old way to accomplish upgrades on PostgreSQL used to be using pg_upgrade, dumping and restoring, or using some third party tools, all of them with their own caveats. Nowadays, PostgreSQL allows us to use logical replication which, in contrast to physical replication, you can replicate between different major versions of PostgreSQL. In this blog, we're going to see how we can upgrade our PostgreSQL 10 to PostgreSQL 11 with zero downtime using logical replication.

Database Backups - Comparing MariaDB Mariabackup and Percona Xtrabackup

Percona XtraBackup is one of the most used tools for backing up MySQL and MariaDB databases. Mariabackup is a fork of XtraBackup, extending its functionality to support compression and at-rest encryption. In this blog, we will look at the differences between these two, and also see how we use them.

How to Customize your MySQL & MariaDB Backups with ClusterControl

ClusterControl provides centralized backup management for MySQL and MariaDB, and it supports the main backup tools - mysqldump, xtrabackup and mariabackup. The command line arguments used are supposed to be the most optimal for most use cases, but you might still want to customize these to fit your particular needs. In this post, we will show you how to do that.

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