Is there any functionality in VM Manager to send an email upon high CPU load? We can see the alerts in the GUI of the Manager, but I don't see anything we can do from CLI or as an automatic alert.
Please let me know if there is a way. Thanks.
OVMM doesn't offer this. If you want that, you'd probably look into Enterprise Manager. It is actually also possible to install the check_mk agent onto the OVS and have Nagios monitor the host for you.
OEM is the best and fully supported option, or install sendmail via the OL5 repo on dom0 to be able to run scripts and send emails ;-)