WilliamLam.com

vSphere Session Timeout Overview

by // 8 Comments

I periodically get questions about vSphere "session timeouts" and because there are several different session timeouts in vSphere, there is usually a back and fourth to understand which session timeout a user is specifically asking about? 🙂

Once the specific vSphere session timeout has been identified, the next series of questions are typically:

  • What is the default or current value?
  • Is it configurable?
  • If so, where and how can I change it?

To help simplify questions around this topic, I have put together this quick overview that also includes details for each specific session timeout and where to find and update the values.

[Read more...]

Is the vCenter Server Unique ID still important today?

by // 4 Comments

When I was a customer back in the day, one of my operational checklist items for deploying a vCenter Server was to configure the vCenter Server ID and ensure that it was unique from other vCenter Servers within my environment.


The vCenter Server ID is a value between 0-63 that is randomly generated by default, but it can updated by a user after the vCenter Server has been deployed.

Why should you care about the vCenter Server ID? vCenter Server uses this ID to generate Virtual Machine MAC Addresses and if two vCenter Servers have the same ID, it can potentially generate duplicate VM MAC Addresses as explained in this VMware KB 1024025.

With this background in mind, is having a unique vCenter Server ID still relavent and applicable today in 2022?

[Read more...]

How to deploy the vCenter Server Appliance (VCSA) 8.0 to VMware Fusion or Workstation?

by // 55 Comments

VMware Fusion and Workstation continues to be another popular way for customers to run a VMware Homelab while leveraging a users existing desktop. In the early days of vSphere 6.5, the method to deploy the vCenter Server Appliance (VCSA) to Fusion/Workstation was less than ideal with a lot of manual steps. In 2017, the Fusion/Workstation team introduced native OVF support and that made deploying the VCSA much simpler, especially with the VCSA two stage installer.

Even though this is not an officially supported method from VMware for deploying the VCSA, the process has not changed for the last several releases and it just works which was great for our users. With vSphere 8, it looks like there has been a change to the VCSA installer that causes a failure during the Stage 2 configuration.


I was made aware of this issue from a colleague who was looking to setup a vSphere 8 environment using VMware Workstation.

Taking a look at the log file, he noticed the error was regarding the upgrade.import.directory OVF property not being set, which seems to be causing the issue.

# cat /var/log/firstboot/vlcm_firstboot.py_9117_stderr.log
Traceback (most recent call last):
  File "/usr/lib/vmware-vlcm/firstboot/vlcm_firstboot.py", line 167, in <module>
    main()
  File "/usr/lib/vmware-vlcm/firstboot/vlcm_firstboot.py", line 129, in main
    fb = VlcmFirstboot(VLCM_COMP, VLCM_SOLUSERNAME)
  File "/usr/lib/vmware-vlcm/firstboot/vlcm_firstboot.py", line 50, in __init__
    os.path.join(get_install_parameter('upgrade.import.directory'), "vlcm")
  File "/usr/lib/vmware/site-packages/cis/tools.py", line 88, in get_install_parameter
    raise InstallParameterException('Install-parameter %s not set' % param)
cis.exceptions.InstallParameterException: {
    "detail": [
        {
            "id": "install.ciscommon.internal.error",
            "translatable": "Encountered an internal error.\n\n%(0)s",
            "args": [
                "Install-parameter upgrade.import.directory not set"
            ],
            "localized": "Encountered an internal error.\n\nInstall-parameter upgrade.import.directory not set"
        }
    ],
    "componentKey": null,
    "problemId": null,
    "resolution": {
        "id": "install.default.failure.resolution",
        "translatable": "This is an unrecoverable error, please retry install. If you encounter this error again, please search for these symptoms in the VMware Knowledge Base for any known issues and possible resolutions. If none can be found, collect a support bundle and open a support request.",
        "localized": "This is an unrecoverable error, please retry install. If you encounter this error again, please search for these symptoms in the VMware Knowledge Base for any known issues and possible resolutions. If none can be found, collect a support bundle and open a support request."
    }
}

Using one of my previous blog post for guidance, he discovered a quick workaround to the problem by simply ensuring this variable is configured with a default value. After running into the problem myself and verifying the solution, I figure this might be useful for anyone looking to run vSphere 8 using VMware Fusion or Workstation, so here are the instructions to work around this issue.

Disclaimer: This is not officially supported by VMware, use at your own risk
[Read more...]