The vSphere Security Guide makes a number of recommendations around best practices for virtual machine security. There are also the vSphere hardening guides, which can be found here. Installing Antivirus…

You can perform an unattended installation or upgrade of an ESXi host by using scripts. To do so, you need a kickstart file, which can either be included in the…

SSH is disabled by default on ESXi host. In order to connect to a host via SSH you first need to enable the SSH service. In the vSphere client you…

There are a number of objectives relating to PowerCLI on the VCAP-DCA blueprint, some of which I have covered, here and here. I have also given PowerCLI examples as an…

I came across this tip recently on Twitter – though I didn’t make a note of the source at the time. It was related to a Powershell question, though is…

This will be a short post, as I don’t want to cover ground I’ve recently written about, but as this is one of the VCAP-DCA objectives, I still wanted to…

When using esxtop or resxtop to troubleshoot a perceived networking issue, look out for dropped packets. Dropped transmit or received packets indicate that either the destination for the packets is…

It is important that name resolution is configured correctly on your ESXi hosts, as it is important for many vSphere features. Your hosts and vCenter servers should be able to…

VMkernel interfaces are used for a number of functions, such as management traffic, vMotion, Fault Tolerance logging, iSCSI and NFS. VMkernel interfaces are given the name ‘vmkx’, where X is…

To troubleshoot networking configurations from the ESXi command line, ESXCLI is the tool to use. This post will focus on looking at the options available using the network namespace of…