If you do not have access to the Direct Console Interface, you can enable the ESXi Shell from the vSphere Web Client.
Procedure
- Select the host, click Manage, and keep Settings selected.
- Click Security Profile.
- In the Services section, click Edit.
- Select ESXi Shell.
- To temporarily start or stop the service, click the Start or Stop button.
- To change the Startup policy across reboots, select Start and stop with host and reboot the host.
- Click OK.
What to do next
After you enable the ESXi Shell, you can use it through a serial port.