Top vCenter Server Appliance (VCSA) troubleshooting commands

During the configuration and troubleshooting of vCenter Server Appliances (VCSA) I maintain a list of commands that I frequently use. This list contains my top configuration and troubleshooting VCSA commands: Enable access the Bash shell: shell.set --enabled true Permanently configure the default Shell to BASH … [Read more...]

Proactively manage your vSphere environment with Runecast Analyzer

I’ve got the opportunity to test Runecast Analyzer. Runecast Analyzer Proactively use VMware KBs, best practices and security hardening guidelines to identify problems in your VMware environment. In this blogpost you find my experience of testing Runecast Analyzer. Deployment The deployment of Runecast Analyzer … [Read more...]

Firefox does not trusts vCenter signed CA certificates

For a vCenter Server environment I replaced the default SSL certificates with CA signed SSL certificates. The Platform Service Controller (PSC) is configured as VMCA subordinate CA. When opening the vSphere Web/HTML5 Client, Firefox displays the following warning: Your connection is not secure. This is because Firefox … [Read more...]

Installing VMware ESXi fails on Cisco UCS Blades with FlexFlash SD cards

When implementing a new Cisco UCS environment I encountered the following error when trying to install VMware ESXi 6.5 on a Cisco UCS Blade server with a FlexFlash SD card: Operation failed This program has encountered an error: partedUtil failed with message: “Error: Can’t have a a partition outside the … [Read more...]

What to know about Spectre and Meltdown with VMware environments

You probably heard about the two massive security flaws: Spectre and Meltdown (link). These security flaws allow attackers to access “secure” data by compromising privileged processor memory from major manufacturers, including Intel, AMD, and ARM. So the most CPUs are affected by Spectre and Meltdown security flaws! In … [Read more...]

Unable to login because of a ESXi root account lockout

When starting one of my VMware ESXi 6.5 lab hosts I was unable to login using the vSphere Host Client. I tried to make an SSH session to the host but got an “Access Denied” message. When Using the Direct Console Interface (DCUI) I was able to login using the root account. In the log folder (under /var/log) … [Read more...]

Deploy an OVA/OVF fails with certificate error

When trying to deploy an OVA/OVF with the vSphere Web Client the following error is displayed: The operation failed for an undetermined reason. Typically this problem occurs due to certificates that the browser does not trust. If you are using self-signed or custom certificates, open the URL below in a new browser tab … [Read more...]

vMotion between two vCenter Servers with different SSO domains

Last week i did my first vMotion between two vCenter Servers with different SSO domain by using PowerCLI. This functionality is also known as “cross vCenter vMotion” and is not included in the vSphere Web Client yet. Without downtime it’s possible to live migrate VMs from one vCenter Server to … [Read more...]

What to know about VMware Cloud on AWS

During VMworld 2017 VMware Cloud on AWS (VMConAWS) is announced. This partnership between VMware and AWS makes it possible to create a VMware Software Defined Datacenter (SDDC) in AWS. In this blogpost  I highlight some useful information on “What is the VMware Cloud on AWS”. VMware Cloud on AWS is a cloud … [Read more...]

What to know about vSphere 6.5 Update 1 before upgrading

vSphere 6.5 Update 1 is the first major update after the GA release of vSphere 6.5. Besides great new improvements such as vSAN 6.6.1 some nasty bugs are fixed. Here’s a short list you want to know before upgrading to vSphere 6.5 Update 1: Upgrade from vSphere 6.0 Update 3 is now a supported upgrade path to … [Read more...]