How do you get data from a MySQL Cluster into Hadoop? Easy, replicate from the cluster to a stand alone MySQL instance and from there use the MySQL Hadoop Applier to HDFS.
This question came from a long time MySQL user who has jumped into the Big Data world.
February 13, 2014 By Severalnines
Galera is slowly but surely establishing itself as a credible replacement for traditional MySQL master-slave architectures.
The benefits are clear - a true multi-master InnoDB setup with built-in fail-over, potentially across data centers.
But how do you migrate? Does the schema or application change? What are the limitations? Can migration be done online, without service interruption? What are the potential risks, and how to address those?
Webinar: Migrating to MySQL, MariaDB Galera and/or Percona XtraDB Cluster
Tuesday, March 11th 2014
Register now - Europe/MEA/APAC
[Read more]
Thomas Nielsen and I recently presented a webinar explaining the
latest developments in managing MySQL Cluster. In case you
weren’t able to attend (or wanted to refresh your memory) then
the webinar replay and charts are now available.
As a reminder, this webinar covered what’s new in MySQL Cluster Manager 1.3 which recently went GA.
By their very nature, clustered environments involve more efforts and resources to administer than standalone systems and this holds true for MySQL Cluster, the database designed for web-scale throughput with carrier-grade …
[Read more]The binary and source versions of MySQL Cluster 7.3.4 have now been made available at http://www.mysql.com/downloads/cluster/.
A description of all of the changes (fixes) that have gone into MySQL Cluster 7.3.4 (compared to 7.3.3) is available from the 7.3.4 Change log.
January 23, 2014 By Severalnines
Thanks to everyone who attended this week’s webinar; if you missed the sessions or would like to watch the webinar again and browse through the slides, they are now available online.
Special thanks to Seppo Jaakola from Codership, the creators of Galera Cluster, for walking us through the various scenarios of Galera recovery.
Webinar topics discussed:
Watch the replay:
…
[Read more]On Thursday 23rd January, Thomas Nielsen and I will be hosting a webinar explaining the latest developments in managing MySQL Cluster. As always the webinar is free but please register here.
Note that we’ll be covering what’s new in MySQL Cluster Manager 1.3 which went GA this week.
By their very nature, clustered environments involve more efforts and resources to administer than standalone systems and this holds true for MySQL Cluster, the database designed for web-scale throughput with carrier-grade availability.
The MySQL Cluster Auto-Installer guides you through defining and running a well configured MySQL Cluster database – …
[Read more]
MySQL Cluster Manager 1.3.0 is now Generally Available and can be
downloaded from the Oracle Software Delivery Cloud. The release
contains a number of enhancements including performance
improvements, handling larger clusters and of course bug fixes.
The other big feature is that you can now import an existing,
running MySQL Cluster instance into MCM without having to stop it
first – this is the topic for this post.
In the past, we had a nice browser-based tool (the MySQL Clster Auto-Installer) to get a well configured cluster up and running (tuned to your environment) and we also had MySQL Cluster …
[Read more]January 6, 2014 By Severalnines
MySQL Cluster is a popular backend for FreeRADIUS, as it provides a scalable backend to store user and accounting data. However, there are situations when the backend database becomes a centralized datastore for additional applications and services, and needs to take a more general-purpose role. NDB usually works very well for FreeRADIUS data, but for wider use cases and reporting type applications, InnoDB can be a better storage engine. For users who need to keep their data in InnoDB and still benefit from a highly available clustered datastore, Galera Cluster can be an appropriate alternative.
In this post, we will show you how to deploy FreeRadius both with MySQL Cluster and Galera Cluster to store user and accounting data. All servers are running CentOS 6.4 64bit.
FreeRadius Deployment with Galera
We will deploy a two-node FreeRadius cluster …
[Read more]December 19, 2013 By Severalnines
Database clusters are pretty sophisticated distributed systems with complex dependencies between nodes. The failure of a node will generally impact the overall cluster, as the remaining nodes need to reconfigure themselves to continue to operate without the failed node. Since re-introducing a node will also affect the existing cluster, the timing could therefore be dependent on the state of the other nodes in the cluster. Repair and restarts often needs to be performed in a particular order in compliance with the redundancy model of the cluster so as not to jeopardize the normal functioning of existing nodes.
Webinar: Repair and Recovery for your MySQL, MariaDB and MongoDB/TokuMX clusters
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[Read more]Many users are challenged with how to setup multi-master, multi-site MySQL clusters. How to do you go from a single database server to a scalable cluster? Or move from a brittle MySQL replication system to a transparent, manageable database cluster? In this joint webinar with Continuent, Percona examines how Continuent Tungsten addresses these problems.
First, we discuss the read-write
