As every year, some of my customers use the weeks after Christmas to update their environments. Nearly all of them run their ESXi hosts with vendor-specific Custom Images that provide additional drivers or agents over the standard VMware image. Unfortunately there are almost always problems with conflicting VIBs when they are updated. Of course it was the same this time. In my case, this time it was about a custom image from Fujitsu.
To perform the update successfully the problematic VIB must be removed. The necessary steps for this I would like to point out below.
After the gerneral availability of ESXi 6.7 U3, I decided it is time to update my homelab. I used the integrated vSphere Update Manager (VUM) for my nested vSAN Cluster without any issues. During my VCAP-DVC Deploy preparation earlier this year I used an old Intel NUC system to deploy an additional vCenter Server Appliance (VCSA) in order to play around with Enhanced Linked Mode (ELM). I wanted to have the VCSAs in different Layer 3 networks, so I copied the design from the nested cluster and installed a nested router alongside with a nested ESXi host. The nested ESXi is used to host the second VCSA. Due to this design I can not use the integrated VUM of the second VCSA to update this standalone ESXi host.
The virtual machines (VMs) on the standalone ESXi host are not very important, so I decided to shut them down together with the VCSA and update the nested ESXi host via CLI. For details on how to update ESXi 6.x using the CLI, take a look at one of my previous blog posts here. I used this method quite some time so I was certain to have no issues with the update. But this time it was different, the update failed.