Category: vSphere

Recently I had the situation that at cluster level, the vSphere HA displayed a heartbeat of datastores at zero, whereby I have defined two specific datastores under vSphere HA settings under Heartbeat Datastores and these must always be pingable. The two defined datastores were no longer visible under Datastores, which is why the warning appeared. After consulting with the storage team, it turned out that […]

Yep, there are still vCenter’s out there with expired root passwords. 😀 Therefore, I will describe the workaround to reset the root password for vCenter 8.0, which also works for vSphere 6.5 through today’s releases. First, take a snapshot of your vCenter VM: Then switch to the ESXi Host Client and open a virtual console from the vCenter VM: Now reboot the vCenter and watch […]

Today I had a strange issue in my vCenter, after a maintenance operation on my server I wanted to power on several VMs and I noticed that they got stuck at 66% in the power on process. There are no warnings or errors. Some VMs take up to 60 minutes to power on and some remain at 66%. Officially, I could not find a KB […]

Today I was dealing with a vSphere 6.5 environment that was not particularly easy to bring up to 7.0 U3. As soon as I started the update process, the above message went off during the pre-check. Now as you know, even 6.7 U3 is no longer supported, so this update was kind of risky. However, the customer has purchased new servers which could not be […]

There are several reasons for upgrading a VMware vCenter offline. In my case, it was a dark site where the customer had no way to connect the vCenter to the Internet. This has the consequence that in the VAMI interface under URL updates is not displayed. What now? Well, there is of course a way to update the dark site vCenter offline. Let’s get started […]

Yep, the Warning Message is that long! 😀 This is what I got from a customer, their vSphere Skyline Health was showing the above mentioned Warning: *Sorry for the poor quality picture. 🙂 If you manually reconfigure the primary HA host for HA, this forces the secondary host to find a new primary host. The newly elected primary host places the VMs that were running […]

A few days ago I had the challenge to upgrade my customers vSphere environment offline. So I thought, yep, you have to do a blog post about that. There are indeed situations where a direct upgrade via internet is not possible e.g. in darksites, security customers and many more. But also for environments where the internet connection might not be reliable enough. In such cases […]