If you search the Internet for “infrastructure-as-code”, it’s pretty easy to come up with a list of the most popular tools: Chef Puppet Ansible SaltStack CloudFormation (Which is Close-Source) Terraform
Before you activate vSAN, verify that your environment meets all requirements. Hardware Requirements for vSAN You must verify that the ESXi hosts in your organization meet the vSAN hardware requirements:
What is vSphere Lifecycle Manager? vSphere Lifecycle Manager is a built-in vSphere service that provides centralized, automated patch and version management for ESXi hosts. Using vLCM you can perform the
You can use the ESXi ISO file and upgrade with fresh Install.
You can use the ESXi Offline Bundle and upgrade through the SSH environment.
You can use the ESXi Offline Bundle and upgrade through the Lifecycle Manager environment on the vCenter Server.
Upgrade ESXi with ISO file
If you want to use an ISO file for updates, you must download that already an ISO file from VMware or other sites. Go to VMware and select the version do you want and start downloading.
Mount the ISO file on your host and boot the host from the ISO and proceed with install processes until you reach the following step.
If you select Upgrade, your ESXi upgraded and you will still have the previous configuration. But you select Install, the new ESXi will Install and must be from the beginning configured ESXi.
Upgrade ESXi with Offline Bundle
For upgrade or Patch ESXi, first, you need an Offline Bundle file. (That is a .zip file). After downloading that you must Upload that on a one-off ESXi datastore, then on ESXi start SSH service and use a command-line software such as a PUTTY connect to ESXi.
Now, you must use the below command to install the patch on ESXi. In this example our datastore is DS-01.