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How to upgrade vCenter Server Appliance 6.7 to 7.0
VMware vCenter 7.0 has been released for several months now and figured it was about time I upgraded my home lab to the latest version.
This post will detail all the steps needed to upgrade vCenter Server Appliance 6.7 to 7.0 without any issues.
Getting Started
Before beginning, I HIGHLY recommended you first check the VMware Interoperability Matrix before performing any upgrade to check compatibility of other VMware products.
Then go download the VCSA 7.0 ISO if you haven’t already and lets get started with the upgrade!
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Fix VMware VCSA /storage/log filesystem out of disk space
This morning I ran into an issue where users were reporting the production VCSA 6.0 was not allowing them to connect into the web or thick client. Another administrator rebooted the VCSA which seemed to work only briefly. I then logged into the VCSA web management (https://<VCENTER_IP>:5480) and noticed the following health status right away:
The /storage/log filesystem is out of disk space or inodes
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VMware vSphere 7 announced

Some pretty big news coming out of VMware today. The announcement of VMware vSphere 7 to become available May 1, 2020! One of the biggest item coming out of this news so far is that vSphere 7 will come in two options.
The first being vSphere 7 as we all have known it to be for years and then the second being vSphere 7 with Kubernetes which will be available through VMware Cloud Foundation and is a new generation of vSphere for containerized applications.
Other notables is that the flash based vSphere client is FINALLY no more! From here on out, only the HTML 5 will exist. vCenter Server on Windows will also finally be put to rest and new deployments of vCenter server will be done using the tried and tested vCenter Server Appliance (VCSA) based on PhotonOS linux.
VMware vCenter Server 5.5.0a update released
VMware has released an update to vCenter 5.5 Server. The new updated, numbered 5.5.0a doesn’t appear to add any new features but instead focus on squishing a number of bugs in the 5.5 version – mostly around vCenter Single-Sign-On and the vSphere web client.
Issues resolved with this release are as follows:
- Attempts to upgrade vCenter Single Sign-On (SSO) 5.1 Update 1 to version 5.5 might fail with error code 1603
- Attempts to log in to the vCenter Server might be unsuccessful after you upgrade from vCenter Server 5.1 to 5.5
- Unable to change the vCenter SSO administrator password on Windows in the vSphere Web Client after you upgrade to vCenter Server 5.5 or VCSA 5.5
- VPXD service might fail due to MS SQL database deadlock for the issues with VPXD queries that run on VPX_EVENT and VPX_EVENT_ARG tables
How to fix vRealize Orchestrator 6 appliance, weak ephemeral Diffie-Hellman key
I’ve recently deployed the vRealize Orchestrator appliance (6.0.2) and noticed right away that my default browser Firefox, would not load the Orchestrator appliance web panel. Firefox always complained about a weak Diffie-Hellman key.
“An error occurred during a connection to ip-address:8281. SSL received a weak ephemeral Diffie-Hellman key in Server Key Exchange handshake message. (Error code: ssl_error_weak_server_ephemeral_dh_key)”
At the time I simply ignored it and just tried Google Chrome which it worked fine. That was until the latest release also broke with the same type of error message:
“Server has a weak ephemeral Diffie-Hellman public key“.
I now had a problem and contacted VMware support, below is the very easy fix to make vCO 6 work in both the latest version of Firefox and Chrome!
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How to convert VMDK to OVF file format
Here is a quick and easy way to convert a VMDK to OVF file format using the OVF Tool from VMware.
- First download and install the VMware OVF Tool for your operating system.
- Open a command prompt as Administrator and navigate to the OVF Tool install directory:
cd C:\Program Files\VMware\VMware OVF Tool
- Next, type in the following command to convert VMDK to OVF:
ovftool.exe\virtualmachine.vmx \virtualmachine.ovf 
After a few minutes time you should you should see a “Transfer Completed, Completed successfully” message and your VMDK to OVF file conversion is complete and ready for use.



