Restart the management agents on ESXi hosts:
Log in to your ESXi host as root via ssh or directly at the console via ALT+F1 Run this command:

/sbin/services.sh restart


Restart the Hostd on the ESXi host
Log in to your ESXi host as root via ssh or directly at the console via ALT+F1 Run this command:

/etc/init.d/hostd restart