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Showing entries 1 to 30 of 392 Next 30 Older Entries

Displaying posts with tag: MySQL Cluster (reset)

MySQL Cluster 7.4.0 Labs Release
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The first version of MySQL Cluster 7.4 has now been released on MySQL Labs. Note that labs loads are not suitable for production use (in fact they’re even less mature than Development Milestone Releases); their purpose is to give users a chance to see what’s in the works, try it for themselves and then provide feedback. Having read that, if you’d like to try it out then Download MySQL Cluster 7.4 from MySQL Labs.

The focus of this first Cluster 7.4 load is performance and data node restart

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MySQL Cluster on Raspberry Pi - Sub-second failover
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MySQL Cluster claims to achieve sub-second failover without any data loss for commited transactions. And I always wanted to show this in a demo. Now we created that demo finally. See Mark's blog and Keith's blog for setting up MySQL Cluster on RaspberryPi.
The nice thing about the RPis is that you can easily pull the plug to test failover. Ok, that is only one possible failure scenario but for sure the most obvious and more impressive than "kill -9".


That demo application is constantly using the database for storing new lines, removing old lines and reading all line data for the graphical view. There is no caching. It uses JDBC directly.
To document the setup here is the config.ini file




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Webinar Replay & Slides: Migrating to MySQL, MariaDB Galera and/or Percona XtraDB Cluster
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March 13, 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 & browse through the slides, they are now available online.

 

Special thanks to Seppo Jaakola, CEO at Codership, the creators of Galera Cluster, and to Johan Andersson, CTO at Severalnines, for their presentations and the live demo.

 

Webinar topics discussed: 

  • Application use cases for Galera
  • Schema design
  • Events and Triggers
  • Query design
  • Migrating the schema
  • Loading initial data into the
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MySQL Cluster to Hadoop
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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.


Webinar: Migrating to MySQL, MariaDB Galera and/or Percona XtraDB Cluster
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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

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MySQL cluster management – webinar replay available
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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


  [Read more...]
MySQL Cluster 7.3.4 Released
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The binary and source versions of MySQL Cluster 7.3.4 have now been made available at http://www.mysql.com/downloads/cluster/ (http://www.mysql.com/downloads/cluster/" target="_blank).

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.

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
  • Failover & Recovery (Automatic vs Manual)
  [Read more...]
MySQL Cluster: The Latest Developments in Management, Free webinar
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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 (http://www.mysql.com/news-and-events/web-seminars/mysql-cluster-the-latest-developments-in-management/" target="blank).

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

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MCM 1.3 is GA – Importing a running Cluster into MySQL Cluster Manager
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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


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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 alternative.

In this post, we will show you how to deploy FreeRadius both with MySQL Cluster and Galera Cluster to store

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New Webinar: Repair and Recovery for your MySQL, MariaDB and MongoDB/TokuMX Clusters
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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


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Percona and Continuent present: Multi-Data Center MySQL with Continuent Tungsten
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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
Webinar Replay & Slides: Galera Cluster Best Practices - Zero Downtime Schema Changes
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December 5, 2013 By Severalnines

 

Thanks to everyone who attended yesterday’s webinar; if you missed the sessions or would like to watch the webinar again & browse through the slides, they are now available online.

 

Thanks again to our speaker, Seppo Jaakola from Codership, the creators of Galera Cluster, for this in-depth talk on Galera Cluster Best Practices - Zero Downtime Schema

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MySQL Cluster 7.3.3 Released
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The binary and source versions of MySQL Cluster 7.3.3 have now been made available at http://www.mysql.com/downloads/cluster/ (http://www.mysql.com/downloads/cluster/" target="_blank).

A description of all of the changes (fixes) that have gone into MySQL Cluster 7.3.3 (compared to 7.3.2) is available from the 7.3.3 Change log.

MySQL Cluster 7.2.14 Released
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The binary version for MySQL Cluster 7.2.14 has now been made available at http://www.mysql.com/downloads/cluster/ (http://www.mysql.com/downloads/cluster/" target="_blank).

A description of all of the changes (fixes) that have gone into MySQL Cluster 7.2.14 (compared to 7.2.13) is available from the 7.2.14 Change log.

MySQL Cluster 7.1.29 Released
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The binary and source versions of MySQL Cluster 7.1.29 have now been made available at http://www.mysql.com/downloads/cluster/ (http://www.mysql.com/downloads/cluster/" target="_blank).

A description of all of the changes (fixes) that have gone into MySQL Cluster 7.1.29 (compared to 7.1.28) is available from the 7.1.29 Change log.

MySQL Tech Tour @Barcelona, 7th Nov.
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We’re on the move again. Come and join us on the 7th of November at the Oracle office in Barcelona. Find out more details about what was announced at MySQL Connect, as well as what’s next…

For more information about this event please visit the link below:

http://www.oracle.com/us/dm/29173-emeafm13045970mpp010-oem-2020763-es.html


MySQL Tech Tour @Barcelona, 7th Nov.
Employee +0 Vote Up -0Vote Down

We’re on the move again. Come and join us on the 7th of November at the Oracle office in Barcelona. Find out more details about what was announced at MySQL Connect, as well as what’s next…

For more information about this event please visit the link below:

http://www.oracle.com/us/dm/29173-emeafm13045970mpp010-oem-2020763-es.html


Webinar Replay + Q&A – Developing JavaScript Applications for Node.js with MySQL and NoSQL
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On Thursday 12th September I co-presented a webinar on how MySQL Cluster delivers the key benefits of NoSQL Data Stores without having to give up the features that people rely on from relational databases (consistency, SQL etc.). There was a particular focus on how to use the new node.js JavaScript API which was recently released as part of MySQL Cluster 7.3. If you weren’t able to attend the live event then the webinar replay is available here (http://www.mysql.com/news-and-events/on-demand-webinars/#en-20-28"

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Enterprise Monitor-ing the Raspberry Pi & MySQL Cluster
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So, now I’ve got my Raspberry Pi’s tested, and running MySQL Cluster we’ll need some form of checking it’s up and running, as with the rest of our MySQL servers.

Monitoring via a Remote Agent

First issue, of course, is that, with my existing MEM console, I have no need to re-install MEM, but rather want to deploy an agent so that I can monitor the MySQL Cluster.
This poses it’s first problem, as there isn’t an ARM-ready agent software available. Remember, it’s not a supported platform. So what can we do? Setup a remote Enterprise Monitor agent, so that, we can monitor the MySQL Cluster, albeit at the sacrifice of not having the agent local on each Raspberry Pi, and hence, not be able to capture the o.s. data.

Config change

So, on my Ubuntu server, I go to the agent install


  [Read more...]
Enterprise Monitor-ing the Raspberry Pi & MySQL Cluster
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So, now I’ve got my Raspberry Pi’s tested, and running MySQL Cluster we’ll need some form of checking it’s up and running, as with the rest of our MySQL servers.

Monitoring via a Remote Agent

First issue, of course, is that, with my existing MEM console, I have no need to re-install MEM, but rather want to deploy an agent so that I can monitor the MySQL Cluster.
This poses it’s first problem, as there isn’t an ARM-ready agent software available. Remember, it’s not a supported platform. So what can we do? Setup a remote Enterprise Monitor agent, so that, we can monitor the MySQL Cluster, albeit at the sacrifice of not having the agent local on each Raspberry Pi, and hence, not be able to capture the o.s. data.

Config change

So, on my Ubuntu server, I go to the agent install


  [Read more...]
MySQL Cluster Asynchronous Replication – conflict detection & resolution
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I was rooting through past blog entries and I stumbled accross a draft post on setting up multi-master (update anywhere) asynchronous replication for MySQL Cluster. The post never quite got finished and published and while the material is now 4 years old it may still be helpfull to some and so I’m posting it now. Note that a lot has happened with MySQL Cluster in the last 4 years and in this area, the most notable change has been the Enhanced conflict resolution with MySQL Cluster active-active replication feature introduced in MySQL Cluster 7.2 and if you’re only dealing with a pair of Clusters, that’s your best option as it removed the need for you

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From 2 Management nodes down to 1 (R.Pi, Cluster n Cream spin-off)
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From my testing MySQL Cluster on the Raspberry Pi’s I thought I’d share this little extract, just in case someone tries the same, some day.. somewhere.. why? I don’t know.

Ok, so when we pull the plug on one of the pi’s, we have of each component falling down, but because one of them is the arbitrator (node-id=2) then cluster falls over.

Before the ‘accident’:

  ndb_mgm -e show

Connected to Management Server at: localhost:1186
Cluster Configuration
———————
[ndbd(NDB)]     2 node(s)
id=3    @10.0.0.6  (mysql-5.5.25 ndb-7.3.0, Nodegroup: 0, Master)
id=4    @10.0.0.7  (mysql-5.5.25 ndb-7.3.0, Nodegroup: 0)

[ndb_mgmd(MGM)] 2 node(s)
id=1    @10.0.0.6  (mysql-5.5.25 ndb-7.3.0)







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Raspberry Pi, MySQL Cluster ‘n’ Cream.
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Ok, so I’ve been playing around with the idea of setting up MySQL cluster on a couple of Raspberry Pi’s and this is how it has been going.

References

First of all, for anyone else who’s reading this, it’s not a new thing, I know, and I highly recommend reading A.Morgans blog, http://www.clusterdb.com/mysql-cluster/mysql-cluster-running-on-raspberry-pi/ as well as someone else’s blog: http://markswarbrick.wordpress.com/, cheers Mark.

So, to make it all possible, here’s what I bought:

Product Model Quantity Raspberry Pi – Model B (Made in UK, 512MB) RASPIB  [Read more...]
Webinar – Developing JavaScript Applications for Node.js with MySQL and NoSQL
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Note that the webinar replay + transcript of the Questions and Answers is now available from here.

On Thursday 12th September I’ll be co-presenting a free webinar on how MySQL Cluster delivers the key benefits of NoSQL Data Stores without having to give up the features that people rely on from relational databases (consistency, SQL etc.). There will be particular

  [Read more...]
Holding MySQL HA workshop in Oxford
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On 17th October I’ll be running a hands-on workshop on the various technologies available to provide High Availability using MySQL. The workshop is being held on 17th October (the day before the All Your Base conference) in Oxford (UK). The cost is £250 + VAT and you can register here.

This workshop provides an introduction to what High Availability (HA) is; what technology options are available to achieve it with MySQL and how to actually implement your own HA solutions. The session will be a mixture of presentations,

  [Read more...]
Sessions now scheduled for MySQL Connect
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The sessions for this year’s MySQL Connect conference have now been scheduled – as you can see below, my 2 MySQL Cluster sessions will be on Saturday 21st September at 11:30 and 14:30 (Pacific).

The MySQL Connect conference is a great opportunity to listen to and chat with people from the MySQL community – including the engineers who work on or around MySQL as well people who are using it in production. The conference takes place from 21-23 September in San Francisco (runs up to Oracle OpenWorld). There are 84 sessions scheduled and

  [Read more...]
MySQL Virtual Developers Day
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I’ll be presenting the keynote for Wednesday’s (31st July) MySQL Virtual Developer Day. The idea behind this event is that you get half a day of on-line presentations as well as live Q&A. My session focuses on what’s new in MySQL – in particular MySQL 5.6 and MySQL Cluster 7.3. As you’ll come to have expected, the event is free but you need to register here.
In the following

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OSCON2013: Slides and files for High Availability in MySQL tutorial
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Good afternoon Oscon attendees - in particular attendees of my High Availability in MySQL tutorial!

Attached you can find a spreadsheet (both LibreOffice, Excel) that we will use at the end of the tutorial. You can also download the slides, in case you wish to browse them at your own pace.

Showing entries 1 to 30 of 392 Next 30 Older Entries

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