Packer and WinRM – mystery resolved

A while ago I started exploring Hashicorp Packer in order to learn more about a new way of creating Windows template VMs. Traditionally, you create a VM, attach the Windows ISO file and of you go… But with Packer, you can define the whole thing in code and store that…

Remediation did not succeed

I was patching a lot of ESXi hosts but had some trouble with one of the clusters. Remediation did not work and in the Events for the first host I saw two events:Could not install patches on <host name>Remediation did not succeed for <host name> A quick search on the…

Troubleshooting Host Profiles

A while ago I was working with host profiles to get the hosts compliant with the CIS Benchmarks (https://www.cisecurity.org/benchmark/vmware/). But for some reason, I could not remediate some of the hosts. Issue #1 The error I got was pretty generic… I started looking at log files and decided to download…

ESXi Events flooded… Firewall configuration has changed.

I was investigating an event that would appear every two minutes, flooding the Events on the host. So the first event in the sequence is “Port vmk1 is now protected by Firewall”. Followed by “Firewall configuration has changed. Operation ‘allowall’ for rule set iSM succeeded” and finally “Firewall configuration has…

Building a lab – recurring issues

As I am preparing for an exam (VCAP Network Virtualization Deployment) is started a rebuild of my lab. During this process, I encountered several issues. With this post I keep track of all the issues and solutions. Keep in mind that I try to write them down in the order…

vCenter not using SMTP smarthost but DNS

The other day I had scheduled a task for a VM and I wanted to get an email notification about the status of that job. So I configured the notification. But the next morning I didn’t find a confirmation email in my inbox. Strange! So I checked the email settings…