Download patch and upload to a datastore
Put host in maintenance mode
esxcli software vib update -d /path/to/patch.zip
Reboot if needed
Exit maintenance mode
Download the latest patches from VMWare’s Product Patches page.
You may want to add “#-” in front of patches (ex: “1-VMware-ESXi-8.0a-20842819-depot.zip”) if you need to install patches in a specific order.
Enable SSH on host
Upload patches to datastore
You can use SFTP or the web UI to upload patches to the datastore.
Any FTP/SCP clients that support SFTP (FileZilla, WinSCP, etc.) will work.
Connect to the server with sftp://<server IP> using root or a user with root access.
Browse to /vmfs/volumes/<datastore name>
The datastore will have a shortcut icon and will display the datastore’s UUID in the path. This is normal.
Upload the .zip to the datastore. I put these in a “patches” or “updates” directory on a local datastore.
Web UI Upload
Installing the patches
Put the host in maintenance mode with esxcli system maintenanceMode set –enable true
esxcli system maintenanceMode set --enable true
If the command freezes check if any VMs are still running. Any VMs running on the host will need to be migrated or shut down to enter maintenance mode.
Press CTRL+C to cancel the command and cancel the task in the webui.
Power off VMs
List VMs with esxcli vm process list
esxcli vm process list
Shut down VM with esxcli vm process kill –type soft –world-id <vm_ID>
esxcli vm process kill --type soft --world-id <vm_ID>
esxcli software vib update -d /vmfs/volumes/
You can use tab to autocomplete the path. This is case sensitive.
Double tap tab to list the directory.
This can take some time to run and you may see a wall of text when it’s done. This is normal.
Reboot if required with reboot.
It’s generally a good idea to reboot either way.
esxcli system maintenanceMode set --enable false
Don’t forget to delete the .zips on the datastore after installing.
You need an account to download the patches. You do not need a paid license associated with the account. An account with a free ESXi license will have access to downloads.
503 Service Unavailable
Don’t panic if you get a “503 Service Unavailable” error after rebooting. The Web UI is still starting up. Give it a few minutes.