In the previous post I wrote about virtual machine cpu limits and finished off by mentioning that limits are not exposed to the guest OS. That cpu limits can cause additional overhead, that your vm is hyperventilating because it cannot get enough cpu per cycle is a worry, but when it happens how do you […]
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virtual machine cpu limit considerations
Several years ago some of VMware’s most respected technical experts made recommendations against using virtual machine cpu limits. yellow-bricks limiting-your-vcpu More recently VMware stated “Resource limits on a virtual machine… form an artificial boundary… you need to take the possible impact into consideration before applying limits to either memory or CPU.” Impact of virtual machine CPU resource […]
VMware PowerCLI Script Library
I’m moving scripts to GitHub Mainly because it’s cool, but the formatting of scripts in wordpress is horrible, and I need to revisit most as I found mistakes in some, what’s in GitHub has been recently tested https://github.com/raoconnor Get-ByBlueFolders Series Many of us divide services or customers using blue folders, typically in a […]
Deploy NSX – Unable to read data from the transport connection
There is a KB 1032561, but in my case it wasn’t the isssue NSX deployment failed with the error: Unable to read data from the transport connection I simply redeployed with a different IP, an had no issue, (hope that doesn’t happen in production…)
vSphere – PSP Storage Path Failovers
Diagrams of Path Failover for active/active, active/passive and ALUA storage arrays. Active/Active Active/Passive ALUA (Take note of optimized paths)
Surviving a security audit
The main point of a security audit is not to try and strangle the auditor, he is just doing his job, although you might think he is there to make your life impossible. I have put together a collection of posts, the configuration settings are all publicly available, mainly from VMware’s Hardening Guide, so there […]
certification
VCAP 5.5 DCA If you are preparing to take the VCAP DCA, you need to spend hours in lab practice. Set up your test lab like the exam lab, and you will gain time and confidence. The following diagram was more or less valid for the 5,5 exam in early 2015. VCAP-DCA Lab VCAP […]