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…

Allign SDRS Thresholds and Datastore Usage on Disk Alarms

Last week I was monitoring a relatively large vSphere cluster with several host clusters and datastore clusters. I saw a couple of datastore warnings related to the datastore usage. There were two or three datastores that were more than 75% utilized. Strange, because other datastores in the same datastore cluster…