Tuesday May 22, 2012

Cluster Fest

It's been a couple of months since we focused on Oracle Solaris Cluster. If you're a fan, we have some new content that will interest you. See below. (If you're new to Solaris Cluster, in particular how to use it in a virtual environment, see "Recent Technical Articles About Oracle Solaris Cluster," further down.)

New Technical Articles About Oracle Solaris Cluster

How to Upgrade to Oracle Solaris Cluster 4.0
If you are running Oracle Solaris Cluster 3.3 5/11 on Oracle Solaris 10 and want to upgrade to Oracle Solaris Cluster 4.0 running on Oracle Solaris 11, consider using the Oracle Solaris Cluster Geographic Edition software. It makes the job easier and keeps downtime to a minimum. Tim Read wrote this 8-part article to show you how. Contents are:

How to Deploy Oracle RAC on Zone Clusters
This one is very cool. Oracle Solaris Cluster lets you create clusters of Solaris zones. That gives you high availability. You also get high availability from Oracle Real Application Clusters (RAC). So why would you install RAC on zone clusters? Because you can implement a multi-tiered database environment that isolates database tiers and administrative domains from each other, while taking advantage of centralized (and simpler) cluster administration. This article explains how to do it.

Recent Technical Resources About Oracle Solaris Cluster

Blog: How to Survive the End of the World - Part I
Provides a simple example of a two-node cluster, and provides resources to help you create one.

How to Survive the End of the World - Part II
Changes the 2-node example above into a failover cluster, and provides resources to help you create one.

As always you can find the latest technical resources to help you evaluate, test, and deploy Oracle Solaris Cluster on OTN's Cluster Resources for Sysadmins and Developers

- Rick

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Thursday Dec 15, 2011

How to Survive the End of the World - Part I

If you've been paying attention you'll probably agree that Earth will be destroyed any day, now.

That used to concern me.

But the more I understand clustering, the more I realize we can simply reconstitute civilization from individual slices of other planets in the Universe. The first thing we need to do is identify the building blocks of an advanced civilization. That should be relatively simple:

football
+cheerleaders
+beer
+brats
-------------------
civilization

Next, find planets that had excellent examples of each building block:

Building BlockBackup Planet
-------------------
footballDitka
cheerleadersDallas
beerBud
bratsMilwaukee
--------------------------------------
civilizationbackup civilization

Those four planets plus Earth would be easy enough to arrange into a high-availability cluster if we downloaded and installed Oracle Solaris 11 and Oracle Solaris Cluster 4.0 on each planet, including Earth.

With Solaris Cluster 4.0, we could create a nice five-node cluster. Not only would the cluster provide the disaster recovery we're looking for, but it would actually help us create an elastic cloud of sorts, in which we could, for instance, tap into the beer of planet Bud during the Super Bowl or other times of dire need. See What's New to read about other cool things you can do with Solaris Cluster 4.0.

Creating a five-node cluster can get a bit tricky, but you can build up your skills by creating a smaller one, using the instructions in this OTN article:

How to Install and Configure a Two Node Cluster

Once you have the two-node setup figured out, you can move to the five-node setup. But the resulting five-node cluster is actually more than what we want, isn't it? It's a cluster of five entire planets, when what we're looking for is a slice of each planet. In an upcoming blog I'll summarize how to create a cluster from the slices of those individual planets. That's called a virtual cluster or a zone cluster, and it's very cool.

- Rick

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Contributors:
Rick Ramsey
Kemer Thomson
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