The Virtualization Room

Apr 8 2008   1:46AM GMT

VKernel virtual appliance identifies issues with new dashboards

Rick Vanover Rick Vanover Profile: Rick Vanover


Portsmouth, NH-based VKernel is deep into the beta stages for their new capacity bottleneck analyzer virtual appliance (VA). I had a chance to preview a pre-release candidate this week and was very happy the product. The capacity analyzer, a follow up to VKernel’s chargeback product that launched last year, plugs into a VMware VirtualCenter or ESX host for data based on storage, networking, processor and memory usage for elements of the virtual environment. The capacity analyzer also includes new features that work well with the growing virtualization environment.

Categorized dashboards
Downloading the virtual appliance, assigning an IP address and pointing it to the VirtualCenter server was a breeze and I was looking at a base dashboard in less than 20 minutes. Probably the most notable feature of this VA is the main dashboard that provides a snapshot view of the environment. Everyone can learn something from their virtual environment from looking at the dashboard from the cumulative view. Upon first look, I learned some new things about my environment. For starters, I have one virtual machine that has an abnormally large storage requirement and I did not know it was as big as it was now.

The dashboard is element-sensitive, so if I have multiple hosts, datacenters or VMware ESX clusters , the bottleneck dashboard can display the status relevant to that object. For example, the figure below shows the dashboard from the summary for one particular datacenter:


One thing I find very beneficial to the virtualization admininstrator is the storage details. The for the storage dashboards you can get very detailed within the VA. For example, when looking at the dashboard’s datastore statistics, important information about the environment is displayed. Storage is usually one of the virtualization administrator’s biggest pain points, and any tool that increases visibility to the storage usage and trending is welcome. I mentioned a large virtual machine earlier, this figure shows that virtual machine at the top of the storage resource consumer’s list with 81 GB allocated for its storage:


Note also that the LUNs are enumerated and their serial numbers are presented. Determining the LUN serial number is not possible through the Virtual Infrastructure Client, so I have had to frequently use the esxcfg-mpath command to get the serial number. Depending on your storage environment, you may need to reconcile LUNs by the serial number. In the scenario of many LUNs with the same geometry, the serial number is the only true way to identify the drive to the virtual environment. This is important in the case of a LUN return, as you do not want the incorrect LUN being removed from the storage system while in use.

Release candidate coming soon
The capacity bottleneck analyzer VA is soon to go into release candidate mode, so be sure to check out the VKernel evaluation site for the standard edition evaluation download.

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