Spectre & Meltdown Update

So it seems that the microcode patches released by VMware associated with their recent Security Advisory (VMSA-2018-0004) have been pulled.... https://kb.vmware.com/s/article/52345 So that's ESXi650-201801402-BG, ESXi600-201801402-BG, or ESXi550-201801401-BG. The microcode patch provided by Intel was buggy and there seems to be issues when VMs access the new speculative execution control mechanism (Haswell & Broadwell processors). However, I … Continue reading Spectre & Meltdown Update

Spectre & Meltdown Vulnerabilities

So at the beginning of the new year, news broke via The Register that there could be a potential security vulnerability to Intel processors (Meltdown) and how it was a problem which couldn't be easily fixed by a microcode update because of how the Intel architecture does speculative execution of code (in a nutshell this is how … Continue reading Spectre & Meltdown Vulnerabilities

Shutdown/Startup order of the NSX for vSphere 6.x environment after a maintenance window or a power outage

VMware have just recently released a Knowledge Base Article that provides guidance in how NSX objects should be powered off or on during maintenance windows or power outages. If you're already using NSX, then have a read here: http://kb.vmware.com/kb/2139067

New VMware Fling – HTML5 Embedded Host Client for ESXi

The clever bods at VMware labs have just released another new Fling... and this one's a damn awesome Fling! https://labs.vmware.com/flings/esxi-embedded-host-client What it allows you to do (after installing the VIB) is to open up a browser to your ESXi host and gain access to a simple client allowing you to manage your freshly installed ESXi … Continue reading New VMware Fling – HTML5 Embedded Host Client for ESXi

Need to know what version of VMware product relates to what build number?

So I'm always trying to correlate versions of ESXi or vCenter Server to the build numbers.... mainly when I'm running a health check and I need to determine what version of VM hardware or VMware Tools should be deployed for the version the customer is running. Anyways, I thought I'd share the webpages that I … Continue reading Need to know what version of VMware product relates to what build number?

ESXi bug – backing up 128GB vdisks and CBT

So I read about this issue a week or so ago when this bug started doing the rounds in the VMware communities and The Register picked up on the issue.... I was planning to blog about it but it slipped my mind due to a busy end of month! >_<" Anyways, VMware have sheepishly recognised the bug … Continue reading ESXi bug – backing up 128GB vdisks and CBT

Shellshock Vulnerability

So last week it was reported that a serious vulnerability was discovered in Bash (Bourne-Again SHell) which is pretty much core to a lot of Linux/Unix OSes - including Apple's MacOS. The bug, dubbed Shellshock, is supposed to be more serious than the previous OpenSSL Heartbleed vulnerability that was discovered earlier this year. It allows … Continue reading Shellshock Vulnerability

Intermittent NFS All Paths Down on ESXi 5.5 U1 upgrade

Those of you using NFS storage and planning to upgrade to the latest version of vSphere - 5.5 U1 - please hold off your upgrades as there is a bug within the code which is currently causing issues on paths to NFS volumes. The bug causes the intermittent loss of connectivity, which can lead to … Continue reading Intermittent NFS All Paths Down on ESXi 5.5 U1 upgrade

DRS Invocation Not Completed

So came across an issue with my VMware cluster today where vCenter was overloading one of my hosts.....Had a quick look at the cluster and under the summary tab it displayed the following error:Hmmm....... upon further inspection it turns out that the hosts weren't displaying their utilisation properly - both CPU and memory displayed 0% … Continue reading DRS Invocation Not Completed