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How to Fix no healthy upstream vCenter 7 Issue?

When you encounter no healthy upstream error, it means that the vCenter is not up and ready yet. Just wait a few minutes before connecting to vCenter via a web browser.

But every no healthy upstream error is because of an unprepared vCenter. There might be some issue that does not allow the services of vCenter to be running properly.

Fix vCenter 7 no healthy upstream error?

Fix no healthy upstream vCenter 7 Issue
Fix no healthy upstream vCenter 7 Issue

There is another guide to help you fix no healthy upstream error of vCenter 7. It might be occurred after upgrading vCenter 6.7 to vCenter 7.

  1. Shutdown the vCenter
  2. Upgrade the VM hardware version
  3. Edit settings > VM Options > General Options > Select VMware Photon OS

Note: make sure you have allocated enough memory and CPU for the vCenter 7 virtual machine. The vCenter 7 is CPU and memory hungry.

Read the related community post on vMware forum.

Related article: Setup a Penetration Testing Lab.

Hardware Requirements for the vCenter Server Appliance

When you deploy the vCenter Server appliance, you can select to deploy an appliance that is suitable for the size of your vSphere environment. The option that you select determines the number of CPUs and the amount of memory for the appliance. The hardware requirements for a vCenter Server appliance depend on the size of your vSphere inventory.

The upgrade of the appliance is a migration of the old version to the new version, which includes deploying a new appliance of version 7.0. You can deploy the new vCenter Server appliance on an ESXi host 6.5 or later, or on a vCenter Server instance 6.5 or later. Your system must also meet specific software and hardware requirements.

Hardware Requirements for a vCenter Server Appliance

Number of vCPUsMemory
Tiny environment (up to 10 hosts or 100 virtual machines)212 GB
Small environment (up to 100 hosts or 1,000 virtual machines)419 GB
Medium environment (up to 400 hosts or 4,000 virtual machines)828 GB
Large environment (up to 1,000 hosts or 10,000 virtual machines)1637 GB
X-Large environment (up to 2,500 hosts or 45,000 virtual machines)2456 GB

Note: If you want to add an ESXi host with more than 512 LUNs and 2,048 paths to the vCenter Server inventory, you must deploy a vCenter Server appliance for a large or x-large environment.

Let us know if you still have issues with vCenter no healthy upstream.

1 Comment
  1. Barclay says

    I don’t have the option for “VMware Photon OS” in guest os

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