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 5.6.43 and MySQL-wsrep 5.7.25 with a new Galera Replication library 3.26 (release notes, download), implementing wsrep API version 25. This release incorporates all changes to MySQL 5.6.43 (release notes, download) and 5.7.25 respectively (release notes, …[Read more]
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In this three-part blog series, we introduced a High Availability (HA) Framework for MySQL hosting in Part I, and discussed the details of MySQL semisynchronous replication in Part II. Now in Part III, we review how the framework handles some of the important MySQL failure scenarios and recovers to ensure high availability.
MySQL Failure Scenarios Scenario 1 – Master MySQL Goes Down
- The Corosync and Pacemaker framework detects that the master MySQL is no longer available. Pacemaker demotes the master resource and tries …
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)
JOIN THE EMEA WEBINAR
USA webinar 9th April …
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 …[Read more]
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:email@example.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 …[Read more]
In Part I, we introduced a High Availability (HA) framework for MySQL hosting and discussed various components and their functionality. Now in Part II, we will discuss the details of MySQL semisynchronous replication and the related configuration settings that help us ensure redundancy and consistency of the data in our HA setup. Make sure to check back in for Part III where we will review various failure scenarios that could arise and the way the framework responds and recovers from these conditions.
What is MySQL Semisynchronous Replication?
Simply put, in a …[Read more]
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 …[Read more]
In this three-part blog series, we will explain the details and functionality of a High Availability (HA) framework for MySQL hosting using MySQL semisynchronous replication and the Corosync plus Pacemaker stack. In Part I, we’ll walk you through the basics of High Availability, the components of an HA framework, and then introduce you to the HA framework for MySQL.
What is High Availability?
The availability of a computer system is the percentage of time its services are up during a period of time. It’s generally expressed as a series of 9′s. For example, the table below shows availability and the corresponding downtime measured over one year.
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.
“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”
“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 …[Read more]
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