VMware – Hyperconverged Infrastructure & Virtualization

Fixing SDDC Manager Inventory Sync Issues for ESXi Hosts

August 14, 2025August 14, 2025Pradeep AdapaLeave a comment

I recently encountered an issue in my lab. I was trying to patch my ESXI hosts from version 8.0U3b/3d to 8.0U3e/f. I used the SDDC Manager and an Imported LCM Image (Dell Custom ESXI Image). The task was failing at Post check like in the below Screenshot

On digging a little deeper into the issue, I found the SDDC Manager Inventory Sync to be the problem. The ESXI Hosts Upgrade is done. Yet, the SDDC Manager does not register that all the ESXI hosts in the cluster have finished upgrading. As a result, it fails.

As you can see in the above image, SDDC Manager doesn’t see the proper host version. This issue affects all the ESXI hosts in the same cluster.

I did verify that all the 4 hosts are of the same version (In this instance the version is 8.0.3-24784735)

This issue can be resolved by performing an Inventory sync from within the SDDC Manager. Use the asyncPatchTool for this task. You can download it from the Broadcom website. Here are the Instructions on how to download the async patch tool from the broadcom website.

** You need to have an active entitlement to get this tool. **

Once you download the asyncPatchTool, transfer the tool (vcf-async-patch-tool-1.2.0.0.tar.gz) to /home/vcf directory in the SDDC Manager using WinSCP tool.

Make Sure you follow the instructions in this document in regards to the asyncPatchTool folder and then go to SDDC manager SSH and use the following commands to perform an inventory sync using the asyncPatchTool

./vcf-async-patch-tool --sync --sddcSSOUser administrator@vsphere.local --sddcSSHUser vcf

(Assuming your sddc manager sso account is administrator@vsphere.local)

As you can see from the above screenshots, perform an inventory sync using the asyncPatchTool. The correct versions of ESXI hosts and other products appear in the output.

In the below screenshot, you can see that I ran the asyncPatchTool Inventory sync. Then I checked the SDDC Manager. My ESXI hosts are all showing the correct version.

This concludes this article.

Fixing Identity Internal Server Error in SDDC Manager

December 13, 2024December 13, 2024Pradeep AdapaLeave a comment

This is the next part to my post How to Fix the Certs Error in vCenter 8.x in VCF 5.2 where we fixed the certs in the vcenters in both management and workload domains. Now, since the certificates of the vcenters are changed, the SDDC Manager has an issue and when we try to get to the sddc manager URL we get the following error:

The error message says that it has to do with “Identity Internal Server Error” which basically says that it has an issue communicating with the vcenters.

To fix this issue, we will need to download a python script called VcRootCaSync.py from the KB article 316007 and then execute the following command from the SDDC Manager

python VcRootCaSync.py

Once you execute this command from within the SDDC Manager, it will show you the active vcenters and you can pick which vcenter server you want to refresh the root cert in the sddc manager.

In our case, since we have 2 vcenters (management and workload domain), I had to execute this command twice to do the same process for both the vcenters and this fixed our issue with the SDDC Manager UI not showing the Login page.

How to Fix the Certs Error in vCenter 8.x in VCF 5.2

December 5, 2024Pradeep AdapaLeave a comment

Recently we had an issue in our production environment vcenters to renew the Machine SSL Cert and I was not able to do it using GUI in vcenter as it was showing an error message:

you can see in the above screenshot the error message it was showing when trying to renew the Machine Cert from the vCenter UI.

We checked the output from the vdt python script which we can get from the KB article (KB Article 90561) which shows the complete health of the vcenter server.

by looking at the FAIL checks in the machine certs on the vcenter, we decided to use the fixcerts.py script from the KB article 90561. This KB article lets you download a python script which can be used to fix the expired certs or to replace all the certs. We have decided to go and replace all the certs as our vcenters which are part of VCF 5.2 were upgraded from previous VCF Versions and the certs on the vcenter was created by External PSC’s in vSphere 6.7 a few years ago which don’t exist because the PSC’s are now embedded in the vcenter itself.

we had to use the fixcerts.py script to regenerate all the certs on the management and workload domain vcenter.

after regenerating and renewing the machine cert on the vcenters, we faced another issue with SDDC manager not able to recognize the vcenters because of their Cert changes. We will discuss this issue and its resolution in another post coming up.

New Product Lifecycle Matrix from VMware

November 30, 2020November 30, 2020Pradeep AdapaLeave a comment

VMware has released a new Product Lifecycle Matrix website so that we can check the validity of all the software from VMware like General Availability, End of General Support, End of Availability etc in one page.

Previously, this was a tedious process to check the end of support cycle for some of the VMware products, but now its all in one place !!

The link is —

https://lifecycle.vmware.com/#/

You can even filter by Product or Filter on any of the columns on the site.