The ramdisk ‘var’ is full on ESXi host and fix (without maintenance mode or reboot)

I recently encountered an issue where vMotions on a host would fail, the host would disconnect from vCenter, and some other strange errors. This was an HP host installed with the HP ISO image, but not sure if that is the cause of this issue. When investigating the logs on the host I noticed that /var on the ramdisk was … [Read more...]

Fixing problems with in-context log viewing from vROps to Log Insight

Had an issue at a customer where I was not able to use the in-context log viewing in vROps to view the logs for the ESXi servers in Log Insight. Using crops 6.6.1 and Log Insight 4.5.1 First part of the solution was to uses FQDN on the ESXi hosts. Only short hostnames where configured on ESXi hosts, which probably … [Read more...]

vSphere Distributed Switch refused to upgrade to version 6.5

Just after vSphere 6.5 was released I decided to upgrade my lab to 6.5. Most of the upgrade went pretty smooth, but two of my 3 distributed switches refused to upgrade. Googeling for a solution dit not help too much, probably since the product was released just a day before When I tried to upgrade I got a message the … [Read more...]

vCenter 6.5 upgrade did not recognise vSphere 6.0 Platform Service Controller version

When I tried to upgrade my lab environment from vCenter 6.0 with external PSC to vCenter 5.5, I ran in to an annoying issue. I tried to upgrade my PSC, but the installer was not able to determine the version from my current PSC. It assumed it was 5.5 and I had to confirm this, which of course, I did not. No way to tell … [Read more...]

Nasty HP software bug hits vSphere 5.1 and 5.5 and helpful info to fix this

Recently I got a call from a customer he was not able to log in to his ESX 5.5 hosts anymore trough ssh, and could not vMotion VM’s anymore. It seemed like the ssh daemon died and trying to start it again did not work. I was able to log on to one of the hosts (DL380 G8) and have a look at the vmkernel.log … [Read more...]