Understanding MySQL 8.0 Group Replication Limitations to build an highly reliable MySQL Infrastructure Operations  Introduction – Redundant and fault-tolerant database systems

Most of our customers are 24*7 internet properties and their applications ( i.e. entire business operations) rely heavily on availability of respective database systems nodes, These systems going unavailable cause serious impact on reputation, customer experience and revenue. To ensure business continuity under foreseeable and unforeseeable man-made or natural disasters, the database system has to be designed and built with fault tolerance and disaster recovery capabilities, in other words the component can be removed and the system should continue to operate as expected. High availability refers to the characteristics of a system that allow the system to sustain continuous operation in the event of hardware and software failures due to natural or man …

Zero Downtime SaaS Provider — How to Easily Deploy MySQL Clusters in AWS and Recover from Multi-Zone AWS Outages

This is the second post in a series of blogs in which we cover a number of different Continuent Tungsten customer use cases that center around achieving continuous MySQL operations with commercial-grade high availability (HA), geographically redundant disaster recovery (DR) and global scaling – and how we help our customers achieve this.

This use case looks at a multi-year (since 2012) Continent customer who is a large Florida-based SaaS provider dealing with sensitive (HIPAA Compliant) medical data, which offers electronic health records, practice management, revenue cycle management and data analytics for thousands of doctors.

What is the Challenge?

Lack of high availability in AWS. The challenge they were facing came from using AWS, which allowed them to rapidly provision database and …

Codership is pleased to announce a new Generally Available (GA) release of Galera Cluster for MySQL 5.6 and 5.7, consisting of MySQL-wsrep 5.6.46 (release notes, download) and MySQL-wsrep 5.7.28 (release notes, download). There is no Galera replication library release this time, so please continue using the 3.28 version, implementing wsrep API version 25.

This release incorporates all changes to MySQL 5.6.46 and 5.7.28 respectively and can be considered an updated rebased version. It is worth noting that …

EverData a leading data center and cloud solution provider in India has recently been writing quite a bit about Galera Cluster and it seems like we should highlight them. For one, they’ve talked about streaming replication in Galera Cluster 4, available in MariaDB Server 10.4. However, let us focus on their post: Galera Cluster vs Amazon RDS: A Comprehensive Review.

They compared MySQL with MHA, MySQL with Galera Cluster and also Amazon Web Services (AWS) Relational Database Service (RDS). Their evaluation criteria was to see how quickly there would be recovery after a crash, as well as performance while managing concurrent reads and writes.

In their tests, they found that time for …

We (Codership, the original and continued developers and experts of Galera Cluster) participated in Austin 2019, and so it would have seemed remiss if we did not also show up at the Percona Live Open Source Database Conference Europe 2019 (that was a mouthful!) happening in Amsterdam September 30 – October 2 2019. We have a booth in the expo hall at the Hilton Amsterdam Schipol Airport, so come drop by and say hello!

While we do not have any talks accepted in the main program, we do have a tutorial that involves using Galera Cluster and MariaDB Server on the first day at 9am by Colin Charles.  View the whole …

Codership is pleased to announce a new Generally Available (GA) release of Galera Cluster for MySQL 5.6 and 5.7, consisting of MySQL-wsrep 5.6.45-25.27 and 5.7.27-25.19 with a new Galera Replication library 3.28 (release notes, download) implementing wsrep API version 25. This release incorporates all changes into MySQL 5.6.45 (release notes, download) and MySQL 5.7.27 (release notes, …

Do you want to run Galera Cluster in the Microsoft cloud? Why not learn to setup a 3-node Galera Cluster using Microsoft Azure Compute Virtual Machines, and run it yourself. In this webinar, we will cover the steps to do this, with a demonstration of how easy it is for you to do.

In addition, we will cover why you may want to run a 3-node (or more) Galera Cluster (active-active multi-master clusters) instead of (or in addition to) using Azure Database for MySQL or MariaDB. We will also cover cost comparisons. 

Join us and learn about storage options, backup & recovery, as well as monitoring & metrics options for the “roll your own Galera Cluster” in Azure.

EMEA webinar 10th of September 1-2 PM CEST (Central European Time)
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USA webinar 10th of September …

Through Amazon Web Services (AWS), you can create virtual servers (i.e., instances). You can install database and Galera software on them. In this article, we’ll create three nodes, the minimum recommended for a healthy cluster, and configure them to use Galera Cluster.

Incidentally, there is a more detailed version of this article in the Tutorial section of our Library.

Assumptions & Preparation

We’re assuming you have an AWS account and know the basics of the EC2 (Elastic Compute Cloud) platform.

To access the nodes, you’ll need an encryption key. Create a new one specifically for Galera, using a tool such as ssh-keygen. Add that key to AWS, under Key Pairs.

Creating AWS Instances

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Codership is pleased to announce a new Generally Available (GA) release of Galera Cluster for MySQL 5.6 and 5.7, consisting of MySQL-wsrep 5.6.44-25.26 and MySQL-wsrep 5.7.26-25.18 with a new Galera Replication library 3.27 (release notes, download), implementing wsrep API version 25. This release incorporates all changes into MySQL 5.6.44 (release notes, download) and MySQL 5.7.26 (release notes, …

The MySQL Server High Availability landscape provides with a slew of tools to help you ensure that your databases keep humming. Such tools are Galera Cluster, however, it is worth looking at semi-synchronous replication with failover tools, and also the usual leader-follower asynchronous replication. Today more workloads are moving to the cloud, and what failover options do you get with Amazon RDS for MySQL or even Aurora? What about the newfangled group replication and InnoDB Cluster? And let us not forget that Galera Cluster has spawned branches too!

Join Codership, the developers and experts of Galera Cluster,  as we discuss where Galera Cluster fits in and how to get best out of it.

EMEA webinar 9th April 10-11 AM CEST (Central European Time)
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USA webinar 9th April …