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Displaying posts with tag: ha (reset)
Resources for Database Clusters: New Chef Cookbook, New Devops Webinar for eCommerce and More

Check Out Our Latest Technical Resources for MySQL, MariaDB & MongoDB Clusters

Like every month this year, we have created new content and tools for you; here is a summary of what we’ve published this December. Please do check it out and let us know if you have any comments or feedback.

And thank you for following us in the past 12 months and for your fidelity; we look forward to “seeing” you next year as well and wish you a great start to 2015!

 

New Live Technical Webinars

 

Infrastructure automation isn’t easy, but it’s not rocket science either, says Riaan Nolan. Riaan has been in operations for the past decade, and has built over a dozen eCommerce …

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Did MySQL & Mongo have a beautiful baby called Aurora?

Amazon recently announced RDS Aurora a new addition to their database as a service offerings. Here’s Mark Callaghan’s take on what’s happening under the hood and thoughts from Fusheng Han. Amazon is uniquely positioned with RDS to take on offerings like Clustrix. So it’s definitely worth reading Dave Anselmi’s take on Aurora. Join 28,000 others […]

Resources for Database Clusters: Performance Tuning for HAProxy, Support for MariaDB 10, Technical Blogs & More

August 28, 2014 By Severalnines Check Out Our Latest Resources for MySQL, MariaDB & MongoDB Clusters

 

Here is a summary of resources & tools that we’ve made available to you in the past weeks. If you have any questions on these, feel free to contact us!

 

New Technical Webinars

 

Performance Tuning of HAProxy for Database Load Balancing

09 September 2014 - with Baptiste Assmann of HAProxy Technologies

Do you know what HAProxy can tell you about your application and database instances? Do you know the difference …

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Learn All About MySQL Cluster

Just released - the all new MySQL Cluster training course.

This MySQL Cluster training teaches you how to install and configure a real-time database cluster at the core of your application. Expert instructors will teach you how to design and maintain your clusters for high availability and scalability by using MySQL Cluster's open-source and enterprise components.

This 4-day training course is a must for those who want to learn about MySQL Cluster as you will not only learn about the concepts and features but you will get extensive hands-on experience. You can follow this training course from your own desk via a live-virtual training or by traveling to an education center to follow this course.

Be the first to influence the schedule for this …

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SBR vs RBR when using On Duplicate Key Update for High Availability

The other day, I was discussing high availability (HA) with other people.  The discussion was going in the direction of, as the application was only using INSERT ... ON DUPLICATE KEY UPDATE (ODKU) and traffic could be replayed, promoting a slave in case of the failure of the master was easy: replaying traffic would make all the slaves converge back to a common state.  It looks as this could work but it might not be as simple.  Before going into the details, let's take a step back and look into HA in general.

tl;dr: be careful when using row-based replication when replicating ODKU as slaves will stop replicating if a row is present on the master and missing on slave (or vice-versa).

High Availability by Promoting a Slave as the new Master
Let's suppose we are working …

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We’d love to go to Paris for the OpenStack Summit - please vote for our talks!

August 6, 2014 By Severalnines

 

Well over a thousand sessions have been submitted for the OpenStack Summit and two of them includes our good selves! We’ve submitted two talks with partners of ours: 

 

… and would love it if the talks were included in the final agenda. For that to happen, we need a few more of your votes today!

 

The OpenStack Summit is a five-day conference for developers, users, and …

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MySQL Fabric/MySQL Utilities 1.4.4 released

The binary and source versions of MySQL Utilities/MySQL Fabric have now been made available at http://dev.mysql.com/downloads/utilities/.

This release contains bug fixes and minor enhancements – full details can be found in the MySQL Fabric/MySQL Utilities release notes.

My talks about MySQL, Galera and LXC (and friends) [UPDATE]

Im giving some talks this year:

MySQL Hochverfügbar mit Galera

Location: FrOSCon

About: Learn about Galera and deploy it using LXC and Ansible

LBaaS-Loadbalancer as a Service

Place: GUUG Frühjahrsgespräche

Topic: It is a workshop ( together with Jan Walzer and Jörg Jungermann). We are going to show how to use LXC to provide slim loadbalancers.

Medley der Containertechniken

Place: GUUG Frühjahrsgespräche

Topic: Learn about all the basic techniques vanilla based Container technology uses/shares (Namespaces, Cgroups und Chroot). Have a look at some of them (LXC, Libvrit, systemd-nspawn and Docker)

MySQL Replikation: Von den Anfängen in die Zukunft

Place: DOAG 2014

Topic: Learn about the past and the future of MySQL (and MariaDB) replication.


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MySQL Cluster High Availability Through Data Replicas

MySQL Cluster enables high availability by storing data replicas on multiple hosts. MySQL Cluster maintains connections between data nodes by using high-speed interconnects over TCP/IP - standard or direct connections - or SCI (Scalable Coherent Interface) sockets.

To learn more about MySQL Cluster, take the MySQL Cluster training course.

This course is currently scheduled for the following locations:

 Location

 Date

 Delivery Language

 Sao Paulo, Brazil

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Sharding & HA – MySQL Fabric Webinar Replay + Q&A

On 19th June 2014, Mats Kindahl and I presented a free webinar on why and how you should be using MySQL Fabric to add Sharding (scaling out reads & writes) and High Availability to MySQL. The webinar replay is available here. This blog post includes a transcript of the questions raised during the live webinar together with the responses given – if you’re questions aren’t answered already then please feel free to post them as comments here.

Abstract

MySQL Fabric is built around an extensible and open source framework for managing farms of MySQL Servers. Currently two features have been implemented – High Availability (built on top of MySQL Replication) and …

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