MariaDB OpenWorks happened February 25-27 2019 in New York City, and it was filled with a lot of activity.

The keynote by Michael Howard is an interesting watch, one with many quoted articles especially around “strip-mining open source technologies and companies,” and “abusing the license and privilege, and not giving back to the community.” Many articles were written about this topic, and it is clear that open source has arrived considering all the success around the IBM acquisition of Red Hat, the Elastic IPO, the Microsoft acquisition of GitHub, the SalesForce acquisition fo MuleSoft and the MongoDB IPO.

Seppo Jaakola talked about …

Recently MariaDB Galera Cluster 10.4.3 RC was announced – Galera MariaDB 10.4.3 RC

I would like to summarize overall reported issues related to Upgrade Tests from 10.3 version to 10.4.
In general we have 3 upgrade strategies:

* Provider upgrade – Upgrading only Galera
* Bulk upgrade – shut down all cluster and upgrade all nodes.
* Rolling Upgrade – Shut down nodes 1-by-1 and Upgrade sequentially.

There is great attention on smooth and safe Upgrade practices which is quite valid point for all users.
Let’s see what we have on Rolling Upgrade side.
Here is the list of FIXED issues:

https://jira.mariadb.org/browse/MDEV-18480 -> CLOSED
…

The much anticipated release of Galera 4 makes its way first in the latest release of MariaDB Server 10.4.3 Release Candidate which you can download now. Congratulations to MariaDB Corporation and MariaDB Foundation on this release candidate — please get testing Galera 4, and share your feedback with us via our Google Group discussion list! Do not forget that you can always reach us via email: mailto:info@galeracluster.com and via our contact us form.

The feature we are excited about the most, is a feature request from many users. This is none other than huge transaction …

Introduction –

Recently i worked on a production issue for one of our client under support .They have a architecture of a three node Galera cluster with one asynchronous slave .

• Node1 – 172.10.2.11
• Node2 – 172.10.2.12
• Node3 – 172.10.2.13
• Replica – 172.10.2.14

Architecture –

The slave(replica) was configured with node3 as replica master. Unfortunately the node 3 was crashed with an OOM killer ,also server has a low gcache size, so when i am trying to start the node 3 , it went to SST . Here the data size was around 2.6 TB , in general for completion of whole SST and joining the node back to cluster will take around  approximately 12 hours.

As i told earlier, the replication slave was under …

Codership is pleased to announce the release of Galera Replication library 3.25, implementing wsrep API version 25. The new release includes many bug fixes and fixes to all security issues mentioned in the Oracle Critical Patch Update Advisory – October 2018

As always, Galera Cluster is now available as targeted packages and package repositories for a number of Linux distributions, including Ubuntu, Red Hat, Debian, CentOS, OpenSUSE and SLES, as well as FreeBSD. Obtaining packages using a package repository removes the need to download individual files and facilitates the easy deployment and upgrade of Galera Cluster nodes.

This release incorporates all changes up to MySQL 5.7.24, MySQL 5.6.42 and MySQL 5.5.62.

Galera Replication …

Let’s talk about MySQL high availability (HA) and synchronous replication once more.

It’s part of a longer series on some high availability reference architecture solutions over geographically distributed areas.

Part 1: Reference Architecture(s) for High Availability Solutions in Geographic Distributed Scenarios: Why Should I Care?

Part 2: MySQL High Availability On-Premises: A Geographically Distributed Scenario

The Problem

A question I often get from customers is: How do I achieve high availability in case if I need to spread my data in different, distant locations? …

MySQL High Availability. Shutterstock.com

In this article, we’ll look at an example of an on-premises, geographically distributed MySQL high availability solution. It’s part of a longer series on some high availability reference architecture solutions over geographically distributed areas.

Part 1: Reference Architecture(s) for High Availability Solutions in Geographic Distributed Scenarios: Why Should I Care?

Percona consulting’s main aim is to identify simple solutions to complex problems. We try to focus on identifying the right tool, a more efficient solution, and what can be done to make …

Implementing Galera Cluster on Amazon EC2  provides several advantages for companies. Multi-master clustering comes out of the box as a default in Galera. Users can read and write from any database providing fast local writes and reads. Galera handles conflicts automatically if your application is writing to the same row. Nodes can be added and deleted on the fly if you need more capacity and elasticity. New nodes can join automatically. In the case data center downtime Galera provides disaster recovery and Galera Cluster takes care of the split brain situation too. Automated failover and recovery allow the database to continually service the application transparently.

Meet the developers and experts of Galera Cluster in Amazon re:Invent Las Vegas 26-29 November. You can find us at Venetian hotel, booth number 738.

Paytrail

“Galera Cluster has supported our growth all the way from a small number of transactions to high volume  traffic. Since 2012 our payment service with Galera has processed over 4 billion euros worth of product and service sales. Today we help 10 000+ webshops and online services in several countries to provide a pleasant shopping experience to their customers”

THINQ

“We’re very happy how Galera Cluster facilitated automated failover eliminating downtime for THINQ services that programmatically route millions of phone calls. The comprehensive Codership documentation includes, for example, the AppArmor package settings necessary to make Galera Cluster nodes more secure. ”

North Carolina based, THINQ is a cloud-based software company that develops Business as a Service (BaaS) solutions for the telecommunications industry. Partners …

We will have a kiosk at Moscone Center, south exhibition hall, Oracle’s Data Management area number 123, close to high availability area and exits 16 and 18. Our kiosk number is DBA-P1.

Our CEO and Co-Founder Seppo Jaakola will host a presentation highlighting the main features of our upcoming Galera Cluster 4.0. The presentation will take place Monday, Oct 22, 1:00 p.m. – 1:20 p.m at the Exchange @ Moscone South – Theater 2. Seats are limited!

Come and meet us! Let’s discuss your MySQL high availability plan or your Galera Cluster deployment. If you want to set up a meeting with us please email to ínfo@galeracluster.com for a meeting request.