This presentation was delivered July 17, 2012 at OSCON in Portland, Oregon.

I summarize high availability in OpenStack Folsom, particularly OpenStack integration with the Pacemaker high availability cluster stack.

I talk about high availability shortcomings in OpenStack Essex, comparing OpenStack to some of its important competitors. I then explain how …

If you’ve heard of Ceph, you’ve surely heard of radosgw, a RESTful gateway interface to the RADOS object store. You’ve probably also heard that it provides a front-end interface that is compatible with Amazon’s S3 API.

The question remains, if you have an S3 client that …

For users of VMware virtualization, it’s becoming increasingly common to deploy Pacemaker clusters within the virtual infrastructure. Doing this requires that you set up fencing via ESX Server or, more commonly, vCenter. Here’s how to do that.

The cluster-glue package contains node Pacemaker’s fencing (STONITH) plugins, one …

I explain the high availability features in the upcoming OpenStack Folsom release at the OpenStack Conference Spring 2012. This presentation was delivered April 21, 2012 in San Francisco, California.

Ever wonder what’s the difference between order <name> inf: <first-resource> <second-resource> and a score of something other than inf? We’ll explain.

If you specify an order constraint score of INFINITY (inf or the keyword mandatory in crm shell syntax), then the order constraint is considered mandatory. If you …