Stockholm – October 25^th 2011 – Severalnines, provider of automation and management software for easily usable, highly available and auto-scalable cloud database platforms, today announces the release of ClusterControl™ for MySQL Galera in cooperation with Codership, the replication experts organisation that leverages the latest developments in computer science to produce fast and scalable synchronous replication solutions that "just work" for databases and similar applications.

Introducing ClusterControl™ for MySQL Galera

ClusterControl™ for MySQL Galera enables customers to Deploy, Manage, Monitor and Scale a clustered MySQL database platform based on Galera Replication.

Developers and DBAs now have access to all of the features of Severalnines' flagship product ClusterControl™ specifically adapted to MySQL Galera.

Designed to address issues and needs of MySQL users relying on MySQL Replication, ClusterControl™ for MySQL Galera offers a complete set of tools to assist developers and administrators of all skill levels to deploy, manage, monitor and scale their replicated MySQL databases.

What is MySQL Galera?

MySQL Galera is a synchronous multi-master cluster for MySQL/InnoDB or, in similar words, a synchronous multi-master replication plug-in for InnoDB. It is very different from the regular MySQL Replication and addresses a number of issues including write conflicts when writing on multiple masters, replication lag and slaves being out of sync with the master. Users do not have to know which server they can write to (the master) and which servers they can read from (the slaves). With MySQL Galera you can simply write and read from any MySQL Server.

Galera Cluster Use Cases

Galera replication works for a wide variety of use cases for high availability and scalability where you tolerate no lost of transactions or no slave lag or you look for write/read scalability Here are some common use cases where Galera can be used.

• Read Master
  • Traditional MySQL master-slave topology, but with Galera all "slave" nodes are capable masters at all times, it is just the application who treats them as slaves. Galera replication can guarantee 0 slave lag for such installations and due to parallel slave applying, much better throughput for the cluster.
• Write Scalability
  • Distributing writes across the cluster will harness the CPU power in slave nodes for better use to process client write transactions. Due to the row based replication method, only changes made during a client transaction will be replicated and applying such a transaction in slave applier is much faster than the processing of the original transaction. Therefore the cluster can distribute the heavy client transaction processing across many master nodes and this yields in better write transaction throughput overall.
• WAN Clustering
  • Synchronous replication works fine over the WAN network. There will be a delay, which is proportional to the network round trip time (RTT), but it only affects the commit operation.
• Disaster Recovery
  • Disaster recovery is a sub-class of WAN replication. Here one data center is passive and only receives replication events, but does not process any client transactions. Such a remote data center will be up to date at all times and no data loss can happen. During recovery, the spare site is just nominated as primary and application can continue as normal with a minimal fail over delay.
• Latency Eraser
  
  • With WAN replication topology, cluster nodes can be located close to clients. Therefore all read & write operations will be super fast with the local node connection. The RTT related delay will be experienced only at commit time, and even then it can be generally accepted by end user, usually the kill-joy for end user experiences is the slow browsing response time, and read operations are as fast as they possibly can be.

Features and benefits of MySQL Galera

Galera features

• Active-active multimaster cluster
• Synchronous replication for InnoDB
• Read and write to any MySQL Server
• Automatic failover and node joining
• True Parallel replication
• Direct client connections

Galera Benefits

• No slave lag or lost of data or out-of-sync situations.
  • All nodes are consistent.
• Scales writes and reads
• Works synchronously over LAN/WAN/CLOUD
• No changes to applications

View all of the features here

Deploying a Galera cluster with ClusterControl™

A Galera cluster can be configured using the Severalnines Configurator

Our Online Tutorial provides an in-depth view and understanding of Galera cluster, covering the following topics:

• Introduction to Galera cluster
• Differences between MySQL Replication and Galera replication
• The pros and cons of Galera cluster
• Using Galera cluster to replicate between data centers
• Certification-based Replication
• Deploying a Galera cluster
• Failure handling with ClusterControl™ and Galera
• Adding a node to a Galera cluster
• Schema changes in Galera cluster

Try the ClusterControl™ Configurator for MySQL Galera today or book a demo to see it live in action!

• ClusterControl™ Configurator for MySQL Galera  – try it today: http://www.severalnines.com/galera-configurator/
• Online Tutorial – ClusterControl™ for MySQL Galera: http://www.severalnines.com/clustercontrol-mysql-galera-tutorial
• Severalnines Knowledge Base: http://support.severalnines.com/home#overview
• Book a demo

Please do reach out to us with your feedback on Facebook, LinkedIn, XING or directly via these contact details for fruitful and interactive discussions on this latest release. For 'instant' communication, feel free to follow us on Twitter !

About Severalnines

Severalnines provides automation and management software for easily usable, highly available and auto-scalable cloud database platforms. ClusterControl™, the company’s flagship product, used by developers and administrators of all skill levels, addresses the full deploy-manage-monitor-scale cycle. Severalnines has enabled over 7,000 deployments to date via its popular online configurator for clustered MySQL databases.

To see who is using Severalnines today, please visit our references page.

About Codership

Codership Oy was founded in 2007 by database clustering experts to exploit the latest developments in computer science and produce fast & scalable synchronous replication solutions for databases and similar applications. Currently, Codership offers multi-master cluster for MySQL database as open source. For more information about our open source MySQL Galera software and support offering, visit www.codership.com

© 2011 Severalnines AB. Severalnines and the Severalnines logo(s) are trademarks of Severalnines AB. MySQL is a registered trademark of Oracle and/or its affiliates. Other names may be trademarks of their respective owners.