I have 2 vmware boxes that have a strange issue also, they both go down and up like clock work. These 2 boxes also do not show a VMs tab.
I have 5 other vmware boxes that don't have this issue, all running the same build.
 
2014-07-19 12:35:53 System Device status changed to Down (snmp)
2014-07-18 18:05:40 System Device status changed to Up
2014-07-18 12:35:45 System Device status changed to Down (snmp)
2014-07-17 18:05:37 System Device status changed to Up
 

>>> Darian Jimenez <darian929@gmail.com> 8/18/2014 1:51 PM >>>
Hello,

I am able to monitor pretty much everything from firewalls to switches but I am having problems with my vmware hosts. It will add the devices fine via SNMP but when it comes to polling them it will give an "SNMP UnreachableMySQL" after running the poller.php -h 'vmware host'

It will show as down on the site and every now and then it comes back online. Then it will show as down again.Attached is a screenshot of the polling information.Inline image 1