The Virtualization Practice

Cloud Computing

Cloud Computing focuses upon how to construct, secure, manage, monitor and use public IaaS, PaaS, and SaaS clouds. Major areas of focus include barriers to cloud adoption, progress on the part of cloud vendors in removing those barriers, where the line of responsibility is drawn between the cloud vendor and the customer for each of IaaS, PaaS and SaaS clouds, ...
as well as the management tools that are essential to deploy in the cloud, ensure security in the cloud and ensure the performance of applications running in the cloud. Covered vendors include Amazon, VMware, AFORE, CloudSidekick, CloudPhysics, ElasticBox, Hotlink, New Relic, Prelert, Puppet Labs and Virtustream.

In a world where you are changing everything – by moving applications in whole or in part from physical to virtual, to private cloud and ultimately (at least for some applications) to a public cloud, having an external reference point from which to judge the performance of these applications is essential. That reference point might best be the end user’s workstation, laptop or mobile device. Real User Monitoring solutions are likely to play a prominent role here.

It is interesting to see Edward’s comment that according to EMC/VMware, widespread production deployment of Cloud Apps is 3-5 years off. If that is the case the VMware CloudFoundry initiative should be focused on cutting-edge development rather than porting existing apps, and in much the same way that Microsoft has always courted developers, CloudFoundry should be the latest cool thing for developer productivity. It’s interesting to talk about this stuff in the abstract, and at the strategic level, but sometimes it’s worth understanding what happens when you need to make the decisions for yourself.

Monitoring SQL Server Performance on VMware vSphere

Attempting to infer the performance of a database server by looking at resource utilization metrics will fail technically and organizationally. In a shared and dynamic environment, the only way to truly assess the performance of an element of the infrastructure or an application is to measure how long it is actually taking to do its job. This makes response time and its companion metric latency into the two most important metrics for virtualized and cloud based systems.

VMware Buys Shavlik

VMware has acquired one more company: Shavlik. This acquisition did not come as much of a surprise to me but is an interesting purchase for VMware. There are quite a few Security as a Service vendors that would make sense for VMware to purchase and Shavlik is one of them. The difference between the other vendors and Shavlik is that VMware has a existing track record with Shavlik as Shavlik is integral in two of VMware’s existing products: VMware Go and VMware Update Manager. Shavlik provides a very important patch management system for these existing products and is one line of defense in the security space. Are there other plans for Shavlik? Or this is a way to lock in one set of tools?

Amazon failed because of simultaneous failure of its EBS in two Availability zones. If you were dependent on one of these (or mirrored across the two) you lost access to the filesystem from your Instances. It may be sensible to move to the use of the S3 mechanism (or some portable abstraction over it) for new applications, but if you have an existing application that expects to see a filesystem in the traditional way, Gluster can provide a distributed cloud-agnostic shared filesystem with multi-way replication (including asynchronous replication).