Codership will be a sponsor at DOAG 2024 in Nuremberg, Germany. There will also be 2 Galera Cluster related talks to attend:

1. Building a Global, High-Availability Database with Galera Cluster: A Live Demo Colin Charles Codership
2. Safe Harbor! Wie der Galera Cluster ihre MySQL Datenbanken „unsinkbar“ macht. Matthias Jung Ordix

There are also a few Galera Cluster blog posts in German from our partner Ordix that are useful:

1. …

By now you must have read our documentation on isolation levels and also our Support for Transaction Isolation Levels. It is worth noting that the default transaction isolation level in MySQL 8 is REPEATABLE READ.

Here is a simple example of this, in action (you can test this on two different nodes, even across a 9-node Galera Cluster!).

First we do some simple setup:

CREATE DATABASE isolate;

USE isolate;

CREATE TABLE products (
id INT PRIMARY KEY,
name VARCHAR(50),
price DECIMAL(10, 2)
);

Then we insert some initial data:

INSERT INTO products (id, name, …

Well, that is more a catchy headline, than the reality: XA transactions work in your Galera Cluster Enterprise Edition (EE). This has been supported since our very first release with 8.0.28 Enterprise, right up till now, in 8.0.39 Enterprise. If you try to run an XA transaction in your regular Galera Cluster you’ll be given an error as such:

mysql> XA START 'xatest';
ERROR 1235 (42000): This version of MySQL doesn't yet support 'XA with wsrep replication plugin'

However, with Galera Cluster Enterprise Edition (EE), XA transactions, “just work”. What is an XA transaction, you might ask? An XA transaction is a distributed transaction …

Codership is pleased to announce a new beta preview release of the multi-master Galera Cluster for MySQL 8.4, consisting of MySQL-wsrep 8.4.2-26.20 (release notes, download), with Galera replication library 4.20 (release notes, download) implementing wsrep API version 26. This release incorporates all changes to MySQL 8.4.2, adding a synchronous option for your MySQL High Availability solutions.

One will notice that MySQL-wsrep 8.4.2-26.20 uses …

Codership is pleased to announce a new Generally Available (GA) release of the multi-master Galera Cluster for MySQL 8.0, consisting of MySQL-wsrep 8.0.39-26.20 (release notes, download), with Galera replication library 4.20 (release notes, download) implementing wsrep API version 26. This release incorporates all changes to MySQL 8.0.39, adding a synchronous option for your MySQL High Availability solutions.

In the Galera replication …

Codership is pleased to announce a new Generally Available (GA) release of the multi-master Galera Cluster for MySQL 8.0, consisting of MySQL-wsrep 8.0.36-26.18 (release notes, download). There is no change to the Galera replication library 4.18 (release notes, download) implementing wsrep API version 26. This release incorporates all changes to MySQL 8.0.36, adding a synchronous option for your MySQL High Availability solutions.

This is a …

Codership is pleased to announce a new Generally Available (GA) release of the multi-master Galera Cluster for MySQL 8.0, consisting of MySQL-wsrep 8.0.36 (release notes, download), with Galera replication library 4.18 (release notes, download) implementing wsrep API version 26. This release incorporates all changes to MySQL 8.0.36, adding a synchronous option for your MySQL High Availability solutions.

There have been some notable changes …

This exclusive webinar is tailored for database administrators and IT professionals aiming to enhance their systems’ efficiency and reliability using Galera Cluster. This session focuses on practical best practices, showcases new features, and provides an extended platform for your queries.

What You Will Learn:

* Core Best Practices: Dive into essential practices, from employing primary keys and leveraging InnoDB to deciding if to optimise read/write splits and managing AUTO_INCREMENT settings.

* Advanced Configuration: Uncover advanced techniques for error monitoring, configuring Galera across networks, and fine-tuning the gcache for optimal performance. * Innovative Features: Stay ahead with insights on implementing Non-Blocking Operations for seamless schema changes, coordinating distributed …

We have in the past covered Installing Galera Cluster 4 with MySQL 8 on Ubuntu 18.04 and also Installing Galera 4 with MySQL 8 on Ubuntu 20.04, and it would seem appropriate to also cover Ubuntu 22.04 LTS (Jammy Jellyfish). We do have excellent documentation and we also have the ability for you to automate all of this via the GUI tool, Galera Manager.

Prerequisites

• All 3 nodes have to have Ubuntu 22.04 LTS installed. The current version at the time of this writing is Ubuntu 22.04.3 LTS.
• Firewall (if setup) needs to …

Galera Manager supports three modes for supporting your Percona XtraDB Clusters: deploying to either Amazon Web Services, deploying to your own on premises hosts, and also just monitoring your clusters. In this blog post, we will go thru houw you should deploying a 3-node Percona XtraDB Cluster via Galera Manager on Amazon Web Services Elastic Compute Cloud (AWS EC2). You will realise that this process happens with just a simple API key and instance selection, so effectively you can have a Galera Manager setup in under fifteen minutes!

On AWS EC2, it is worth noting that Galera Manager itself can be deployed on the free tier for testing purposes. However, in production environments, you might expect up to 100GB of logs on a monthly basis, so you should plan accordingly.

Obtain Galera Manager by …