How to remove cluster warning: ESXi Shell for the Host has been enabled

When taking Vmware ESXi hosts out of maintenance mode, I used to see this all the time.  You can ignore if you know that you have the shell enabled, but found this method to suppress the warning...

Reference:
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=2003637

Vmware ESXi Unsupported mode

On the console:

1. Press ALT-F1.
2. Type "unsupported" and press ENTER.  No characters will show on screen.
3. Enter ROOT password when prompted should get you into # prompt.
4. Be careful, you are in unsupported admin mode.

To Exit:

1. At #, type CLEAR and press ENTER to clear screen.
2. Type EXIT and press ENTER to exit unsupported mode.
3. Press ALT-F2 to switch back to ESXi console page.

Reference:
http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=displayKC&externalId=1003677

Enabling SSH on ESXi Hosts

1. Open vSphere client
2. Select ESXi host, then the Configuration tab.
3. Select Security Profile
4. Click on Properties
5. In the Services popup dialog, select SSH and press the Options button
6. Change settings, then click OK when done.

Reference:
http://www.thomasmaurer.ch/2011/08/enable-ssh-on-esxi-5-via-vsphere-client/