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10 Newer Entries Showing entries 61 to 70 of 153 10 Older Entries

Displaying posts with tag: galera (reset)

MaxScale for the rest of us - Part 1
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MaxScale for the rest of us - Part 1 SkySQL released MaxScale as Open Source on github a few weeks ago. For some instructions on how to install and configure it, Ivan Zoratti has written a blog about that, and Mark Riddoch has written about why we need MaxScale here, but what I will try in a series of blogs is to describe what MaxScale is, in terms of what you can do with it, and to put it into …

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Benchmarking Galera Cluster
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What is it about?

I used to do some benchmarkstuff and blogged about it on my blog written in German. Im going to do testings and benchmarkings again:)

We are going to have a look into ‘benchmarking’ a 3-node Galera Cluster. The application (sysbench) is on a separate node accessing one node of the cluster. This would be the case in a i.e. VIP setup.

Setup

3 Galera Nodes

  • Virtual machines (OpenStack) provided by teuto.net
  • VCPU: 4
  • RAM: 4GB
  • OS: Centos 6.4-x86_64
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MariaDB Enterprise 1.0 is Here
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I know it was officially announced Monday, but I just wanted to take a moment and let everyone know MariaDB Enterprise 1.0 is now available, in case you missed the previous article.

What does MariaDB Enterprise consist of?

“MariaDB Enterprise is composed of several components including MariaDB Manager, which is a set of management tools and an API with which you can easily provision, monitor, and manage a highly available MariaDB Galera Cluster for multi-master, synchronous replication. Galera is a powerful technology that can eliminate single points of failure for your database infrastructure, but it is relatively new and can be a challenge to configure for …

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Webinar Replay & Slides: Repair & Recovery for Your MySQL, MariaDB & MongoDB / TokuMX Clusters
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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: 

  • Redundancy models for Galera, NDB and MongoDB / TokuMX
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Galera Phrases
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I confess I am a Galera fanboy. This post is going to present two slogans about Galera reminding you about Galera “limitations”. This is for the sake of user experience:)

Galera Phrases:

  • One Cluster
  • Replication

One Cluster

Think about Galera as One Cluster. As every transaction is committed virtually synchronously, the slowest node determines the (DML) speed of the cluster. This is true regarding the network too.

Replication

  • Galera is still some kind of replication. So keep in mind to provide PK as for (ROW based) Replication. There is a …

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Active-active Alfresco cluster with MySQL Galera and GlusterFS
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January 20, 2014 By Severalnines

Alfresco is a popular collaboration tool available on the open-source market. It is Java based, and has a content repository, web application framework and web content management system. For critical large-scale implementations that require 24*7 uptime, a multi-node cluster would be appropriate. Since Alfresco depends on external components such as the database and the filesystem, clustering the Alfresco instances only would not be enough.

In this post, we are going to show you how to deploy an active-active Alfresco cluster with MySQL Galera Cluster (database), GlusterFS (filesystem) and …

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Upcoming Webinar: What’s new in Percona XtraDB Cluster 5.6
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I’ve been blogging a lot about some of the …

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Deploying an Active-Active FreeRadius Cluster with MySQL NDB or Galera
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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 …

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Installing MariaDB Galera Cluster on Debian/Ubuntu
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This is a HOWTO about installing MariaDB Galera Cluster on Debian/Ubuntu.
It is because a lot of people had problems installing MariaDB Galera Cluster.
In the end elenst from #maria on freenode forced me to write a Howto :)
You will find out, installing MariaDB Galera Cluster is in fact quite easy and some kind of boring in the end.
This Howto is written (tested) on Debian 7.1 (Wheezy) and Ubuntu 12.04 (Precise).

What we need

In our setup we assume 3 nodes (node01, node02, node03) with one interface.
We assume following IP addresses: …






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It can be a bright 2014
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In many parts of the MySQL world, whether you have users, developers or administrators of MySQL, the season holidays are for family, relax, prayers, travel, or they are simply a moment where you can enjoy what you like or care most about.

For me, this time is dedicated to my family, but also to deeper thoughts around the strategies to adopt in short and long term. My work nowadays, as the work of many others, is ruled by quick decisions, by the "time to market” - whatever “market" means in a specific context. Decisions must be made in meetings that are time-boxed in one hour or even less. In the end, you accumulate so much work and high …


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10 Newer Entries Showing entries 61 to 70 of 153 10 Older Entries

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