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233 blog posts in 13 categories

How to Avoid SST when adding a new node to Galera Cluster for MySQL or MariaDB

SST can be painful in some occasions, as it can block the donor node (with SST methods like mysqldump or rsync) and burden it when backing up the data and feeding it to the joiner. For a dataset of a few hundred gigabytes or more, the syncing process can take hours to complete - even if you have a fast network. It might be advisable to avoid e.g. when running in WAN environments with slower connects and limited bandwidth, or if you just want a very fast way of introducing a new node in your cluster.

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Webinar Replay & Slides: Become a MySQL DBA - Deciding on a relevant backup solution

Thanks to everyone who joined us last week for this live session on backup strategies for MySQL and Galera clusters led by Krzysztof Książek, Senior Support Engineer at Severalnines. The replay and slides to the webinar are now available to watch and read online via the links below.

Watch the replay

Become a MySQL DBA blog series - Common operations - Replication Topology Changes

This is the fifth installment in the ‘Become a MySQL DBA’ blog series, and discusses one of the most common operations a DBA has to handle - replication topology changes and planned failover. Our previous posts in the DBA series include Schema Changes, High Availability, Backup & Restore, Monitoring & Trending.

Deploying Galera Cluster for MySQL using Vagrant

Vagrant is a system that allows you to easily create and move development environments from one machine to another. Simply define what type of VM you want in a file called Vagrantfile and then fire them up with a single command. It integrates well with virtual machine providers like VirtualBox, VMware and AWS. In this blog, we’ll show you how to expedite the deployment of your development environment using some Vagrant boxes we’ve put together.

Become a MySQL DBA blog series - Common operations - Schema Changes

This is the fourth installment in the 'Become a MySQL DBA' series, and discusses the different approaches to schema changes in MySQL. Our previous posts in the DBA series include High Availability, Backup & Restore and Monitoring & Trending.

Become a MySQL DBA blog series - Database High Availability

This is the third installment in the ‘Become a MySQL DBA’ series, and discusses the pros and cons of different approaches to high availability in MySQL. Our previous posts in the DBA series include Backup and Restore and Monitoring & trending.

Become a MySQL DBA blog series - Backup and Restore

We’ll continue this blog series with another basic but crucial DBA responsibility - taking backups of your data. Backup and restore is one of the most important aspects of database administration. If a database crashed and there was no way to recover it, any resulting data loss might lead to devastating results to a business.

Become a DBA blog series - Monitoring and Trending

So, you’ve been working with MySQL for a while and now are being asked to manage it. Perhaps your primary job description is not about support and maintenance of the company’s databases (and data!), but now you’re expected to properly maintain one or more MySQL instances. It is not uncommon that developers, or network/system administrators, or DevOps folks with general backgrounds, find themselves in this role at some point in their career. 

Introducing ClusterControl Developer Studio and Creating your own Advisors in JavaScript

With ClusterControl 1.2.10, we introduced our new, powerful ClusterControl DSL (Domain Specific Language), which allows you to extend the functionality of your ClusterControl platform by creating Advisors, Auto Tuners, or “mini Programs”. The DSL syntax is based on JavaScript, with extensions to provide access to ClusterControl’s internal data structures and functions. The DSL allows you to execute SQL statements, run shell commands/programs across all your cluster hosts, and retrieve results to be processed for advisors/alerts or any other actions.

Press Release: Severalnines creates programmable DevOps platform to manage leading open source databases

Severalnines, the provider of database infrastructure management software, today launched the latest version of its ClusterControl platform. This database automation product cuts down time for businesses to deploy, monitor, manage and scale multiple open source databases. With this latest release, Severalnines is helping database and system administrators take full control of their database resources.