Relax. There is no DRBD Windows port.

And of course, deploying Windows machines in a highly available, synchronously replicated enterprise cloud is something you can do today. Heartbeat, Pacemaker, DRBD, libvirt and KVM make an excellent, fully integrated HA virtualization stack.

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It seems that the MySQL Conference selection committee didn’t seem to like the talk (and tutorial) I submitted about integrating MySQL Replication with the Pacemaker cluster stack, enabling full MySQL scale-out in an environment you previously knew only for its synchronous-replication High Availability features. But — fear not, my fellow HA geeks! — we are instead making the talk available for free, over the web, one week ahead of the conference.

In this 45-minute presentation, we will give an overview about

• the Pacemaker cluster stack and the Linux-HA project it evolved out of;
• the current state of MySQL integration in Pacemaker, and of course
• leveraging Pacemaker’s built-in clone infrastructure for MySQL Replication.

It’s pretty cool stuff that the Linux-HA …

by @botchagalupe
on Virtualization, Open Source tools and DNS Problems

Technorati Tags: dnsproblem drupal ha heartbeat linux-ha mysql pacemaker puppet virtualization xen …

With all of the discussions over the past years about MySQL Replication vs. DRBD (where the “vs.” part is in fact grossly misled of course — they are two technologies that complement each other quite well), here’s one with a slightly different angle: does it make sense to roll your own cluster manager around MySQL Replication, or is it smarter to plug into an existing, proven cluster architecture?

You’ll expect my own view to be fairly well defined, and it is. …

LINBIT will be a proud sponsor at this year’s LinuxCon in Portland, OR, held on September 21-23. We will also participate in the Linux Plumbers Conference, co-located with LinuxCon.

Phil is to speak at LinuxCon about DRBD 8.3 and beyond. At LPC, we will primarily focus on building highly available storage systems with DRBD, Pacemaker, and the STGT and LIO …

A new version of the DRBD User’s Guide is up at http://www.drbd.org/users-guide. As this version has some major additions to the previous release, I’ve decided to create a release
candidate this time, before declaring this an “official reference” — everyone’s feedback is requested and highly encouraged.

What’s new is Chapter 8, “Integrating DRBD with Pacemaker clusters“. It deals with the new drbd OCF resource agent we are about to release with 8.3.2, and how to use it in Pacemaker clusters using the CRM shell. It also has setup examples for MySQL, as does the legacy chapter on Heartbeat. Please grab the 8.3.2rc2 tarball if you are …