Last week I was in London at the InfoSecurity convention having a look what is happening in the security world. If you have never attended InfoSecurity, it is a free event where most of the presentations are a bit loaded on the marketing side. Of course there are always exceptions. The 2-hour workshops are truly gems. At least the workshops which I did attend to. What if you could protect VM’s without agents or without any other piece of installed software? The workshop which really caught my attention was the workshop presented by Andrei IONESCU and Adrian Liviu ARSENE who are both employed by Bitdefender: ‘Data Center Security – HYPERVISOR INTROSPECTION’. Starting with explaining how external and internal threats are evolving they quickly moved on to explain how their […]
IT courses can cost quite a bit of money. If you are like me and want to have more training than your company’s training budget allows you, you might want to have a look at how you can get some free training under your belt. Free training can come from anywhere really, be that ebooks, books, onsite learning platforms or online lab, you just have to look for it and make your pick. Some even come with free certificates of completion. At the bottom you can find my personal favorite picks. But let me give you some learning possibilities which you probably have not considered yet and let me start with the most unobvious ones: How to become a technical reviewer of a […]
A couple of weeks ago I received some very pleasant news in my inbox: “VMworld Blogger Pass, Barcelona – YOU’RE GOING!” This is the second year VMware bestows this honor on me and I am feeling as happy and honored as I felt last year. Just like last year, I had to read the email a couple of time before I was able to believe the subject of the email. *grin* Of course a free conference ticket only takes you that far. I have to extend my gratitude also to my managers who recognize the value of all the technical sessions at VMworld and who sponsor all my other costs. You guys rock! So what is this VMworld I am writing about? I have always seen VMworld […]
For the 2 weeks I had been having very annoying NTP sync issues on some of my VCSA and PSC appliances in one of the datacenters. While my SSO domain and vCenter enhanced linked mode were for the most part working properly, it still bugged me that the NTP clocks on my PSC and VCSA in datacenter 1 were properly syncing with the NTP source (windows NTP source), but the NTP time on my PSC and VCSA in datacenter 2 were always off with somewhere between 3 to 7 minutes with the clocks of all my other appliances and Windows VM’s. They did how ever sync properly with each other. (For trouble shooting purposes, I pointed all appliances to a single NTP source in a single […]
Upgrading a vSphere environment with SRM can be tricky. If you follow the official best practice on how to upgrade vSphere and SRM you might find yourself in a position where SRM is out of commission because the last part of the upgrade process, the part where you upgrade the DR site, fails. The official recommended way to upgrade SRM The official recommended way to upgrade SRM connected sites is to upgrade all components in the Primary sites first and then upgrade the components in the DR site. This means that you upgrade vCenter components followed by the SRM components in Primary Site A first, followed by vCenter components and the SRM components in Primary Site B and then by the vCenter components […]
Recently I had several problems upgrading vCenter server 5.5U2 to vCenter server 6.0U2a. Luckily all has been solved now and I owe a huge thank you to Ciaran McE from VMware Support who has stood by me and helped me to solve this vCenter upgrade problem. Below I am listing a handful of the errors we have seen, how you can spot them and how you can solve them. Error 1: Error 1603. Because SSO appeared to be somehow corrupt [As a test to check if SSO was intact I deleted of a local SSO group resulted in the unavailability of SSO as a whole], I had to install a new external SSO server, remove and reinstall vCenter server and re-point […]
We are delighted to announce that Manny Sidhu is joining vMusketeers! Manny currently works from Melbourne Australia, has been a vEXPERT for the last 3 years and has been announced as a vEXPERT NSX for 2016. Like the rest of us he is a huge fan of VMware , virtualization and a certification junkie. Thanks for joining our merry band of vMusketeers Manny!
The CPU over-commitment ratio also known as the vCPU to pCPU ratio. In this post I will test this new feature of vSphere 6.5 and how it impacts a vSphere 6.5 datacenter design. I am testing this because some of the information about this setting is kind of vague and I want to be sure that I understand how it works and what its impact is on production environments and how it will affect vSphere designs. To be able to test the above mentioned features I have setup a small test environment using 2 nested ESXi hosts, a nested VCSA 6.5 server and a handful of VM’s. The Cluster: 2 hosts HA is disabled DRS is enabled ( because this is a DRS feature!) The hosts: Both hosts have the […]