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Showing entries 1 to 10 of 246 10 Older Entries

Displaying posts with tag: cluster (reset)

Putting MySQL Cluster in a container
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To get more familiar with docker and to create a test setup for MySQL Cluster I created docker images for the various components of MySQL Cluster (a.k.a. NDB Cluster)

At first I created a Fedora 20 container and ran all components in one container. That worked and is quite easy to setup. But that's not how one is supposed to use docker.

So I created Dockerfile's for all components and one base image.

The base image:
  • contains the MySQL Cluster software
  • has libaio installed
  • has a mysql user and group 
  • serves as a base for the other images
The management node (ndb_mgmd) image:
  • Has ndb_mgmd as entrypoint
  • Has a config.ini for the cluster








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Learn All About MySQL Cluster
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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.


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Picking the Right Clustering for MySQL: Cloud-only Services or Flexible Tungsten Clusters? New webinar-on-demand
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As businesses head into the cloud, it is tempting to reach for the first product that offers to make database operation as simple as punching a few buttons on a menu.  However, there’s a big difference between firing up cloud database services such as Amazon RDS for testing or development and finding a solution that can handle hundreds of millions of transactions daily. This webinar-on-demand
Continuent Tungsten 2.0.3 Release Notification
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We are pleased to inform you that the new Continuent Tungsten 2.0.3 is now available. This is a recommended release for all Continuent Tungsten clustering customers as it contains important updates and improvements to the stability of the manager component, specifically with respect to possible stalls and memory usage that would cause manager failures: A number of fixes to the Manager
MySQL Cluster High Availability Through Data Replicas
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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

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Automatic Database Sharding with MySQL Cluster
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MySQL Cluster automatically shards at the database layer, spreading the database out across nodes so that developers do not have to write complex and intrusive application-sharding logic (which is required by other platforms).

To understand the types of nodes in a MySQL Cluster and to learn how to design, install, configure, and maintain this product, take the MySQL Cluster training course. Below is a selection of the events already on the schedule for this 3-day training course:

 Location
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Geographically distributed multi-master MySQL clusters
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In today's webinar, we discuss the multi-master capabilities of Continuent Tungsten to help you build and manage systems that spread data across multiple sites.  We cover important topics such as setting up large scale topologies, handling failures, and how to handle data privacy issues like removing personally identifiable information or handling privacy law restrictions on data movement. We
MySQL Cluster in Environments Requiring Real-Time Analytics
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MySQL Cluster is used by many different industries. MySQL Cluster thrives in the most complex data environments that demand real-time analytics such as:

  • Financial trading with fraud protection
  • Feed-streaming analysis and recommendations
  • Massive online multiplayer games
  • Communication services

To learn more about MySQL Cluster, take the MySQL Cluster training course. Below is a selection of events already on the schedule for this 3-day instructor led course:

 Location  Date  Delivery Language
 Sao
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innodb_flush_logs_on_trx_commit and Galera Cluster
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We deploy Galera Cluster (in MariaDB) for some clients, and innodb_flush_logs_on_trx_commit is one of the settings we’ve been playing with. The options according to the manual:

  • =0 don’t write or flush at commit, write and flush once per second
  • =1 write and flush at trx commit
  • =2 write log, but only flush once per second

The flush (fsync) refers to the mechanism the filesystem uses to try and guarantee that written data is actually on the physical medium/device and not just in a buffer (of course cached RAID controllers, SANs and other devices use some different logic there, but it’s definitely written beyond the OS space).

In a non-cluster setup, you’d always want it to be =1 in order to be ACID compliant and that’s also InnoDB’s default. So far so good. For cluster setups,

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Ghosts of MySQL Past, Part 8: The First Fork.
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This is the 8th installment in the rather long series that started with Part 1 about a month ago.

Back in 2006, we were in the situation where MySQL 5.0 had taken forever, and the first “GA” release was not suitable for production. Looking towards MySQL 5.1, it was also unlikely to be out any time soon. The MySQL Cluster team had customers that needed new features in a stable release. The majority of users didn’t use the MySQL server at all, they directly used the C++ NDB API for the vast majority of queries – so the vast majority of release blocker bugs in the MySQL server would not affect the production

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Showing entries 1 to 10 of 246 10 Older Entries

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