Severalnines Blog
The automation and management blog for open source databases

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726 blog posts in 13 categories

An Overview of WiredTiger Storage Engine for MongoDB

WiredTiger is a NoSQL, Open Source extensible platform for data management. WiredTiger uses MultiVersion Concurrency Control architecture. MongoDB acquired WiredTiger Inc. on December 16, 2014. The WiredTiger storage engine is the default storage engine starting in MongoDB version 3.2.

How to Migrate WHMCS Database to MariaDB Galera Cluster

The WHMCS software suite relies on a MySQL database to store its data, so how do you make it highly available? This blog post shows how to migrate the existing WHMCS database from a standalone MySQL server (provided by the WHM/cPanel server itself) to a three-node MariaDB Galera Cluster to improve the database availability.

How to Automate Daily DevOps Database Tasks with Chef

Managing databases can be repetitive, and performing manual tasks on a daily basis can be tedious and error-prone. Therefore, if you are already using Chef to automate your infrastructure, why not automate your databases as well? In this blog, we will show you how to translate your manual DBA tasks into an automated set of rules with Chef.

Which Time-Series Database is Better: TimescaleDB vs InfluxDB

In the new time-series database world, TimescaleDB and InfluxDB are two popular options with fundamentally different architectures. One is based off a relational database, PostgreSQL, the other build as a NoSQL engine. In this blog, we’ll give you a short description of those two, and how they stack against each other.

Benchmarking Managed PostgreSQL Cloud Solutions - Part Four: Microsoft Azure

The last in our four part series “Benchmarking Managed PostgreSQL Cloud Solution” this blog takes a close (and somewhat painful) look at Microsoft Azure and benchmark it for PostgreSQL using pgbench and sysbench.

Top Common Issues with MHA and How to Fix Them

MHA (Master High Availability) is a popular failover solution used in MySQL Master-Slave topologies. It is stable and used in production by large companies such as Facebook. In this blog, we outline the most common but important issues that you might encounter when running MHA. We’ll also see how to resolve them.

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.

Popular Docker Images for MySQL and MariaDB Server

There are many Docker images for MySQL and MariaDB, but which one should you use? This blog post lists the most popular Docker images that can be found on Docker Hub, the world's largest library and community for container images.

How to Deploy PostgreSQL to a Docker Container Using ClusterControl

Deploying a single PostgreSQL instance on Docker is fairly easy, but deploying a replication cluster requires a bit more work. In this blog, we’ll see how to deploy PostgreSQL on Docker and how we can make it easier to configure a primary-standby replication setup with ClusterControl.

How to Execute and Manage MySQL Backups for Oracle DBA’s

Whether you’re planning to migrate from Oracle database to MySQL or run your new project with MySQL, you need to know how to do copies of your data. In this blog post, we will cover some of the most typical cases of the data backups with reference to Oracle backup methods. We will tell you how to guard yourself against data loss, what tools and commands to use, and how can you recover your data.