VMware Alerts from vCenter

Posted on 2011-10-18
Last Modified: 2012-05-12
We have a small VMware environment 3 Hosts and a vCenter physical server.

2 Hosts 72GB of RAM, Dual 6 Core CPU with about 2TB of disk space, and 6 NICs each. The Third host is much smaller.

Every once in a while we get an email alert from the vCenter server but when I go into vCenter everything seems fine and I can find no Alerts.

How can I track this down?

Target: esx01.xxxxx.local
Stateless event alarm
Alarm Definition:
([Event alarm expression: Cannot connect host -  incorrect Ccagent] OR [Event alarm expression: Cannot connect host - network error] OR [Event alarm expression: Cannot connect host - time-out] OR [Event alarm expression: Cannot connect host - time-out] OR [Event alarm expression: Host connection lost])
Event details:
Host esx01.xxxxx.local in Maindatacenter is not responding

Question by:RickEpnet
    LVL 116

    Expert Comment

    by:Andrew Hancock (VMware vExpert / EE MVE)
    Looks like the ESXi Management Agents have either hung for a moment, or there is a communication issue between ESXi and vCenter server. hence the not responding.
    LVL 14

    Author Comment

    But if that was the case shouldn't I see something on that host or in vCenter in Alarms?
    LVL 116

    Assisted Solution

    by:Andrew Hancock (VMware vExpert / EE MVE)
    You would see the host disappear, maybe as disconnected, or not responding, and then it would come back.

    Should be an Alert that corresponds with the email?
    LVL 14

    Author Comment

    We never see the host disappear and there is never and alarm. But it still concerns me.
    LVL 16

    Accepted Solution

    go to the tasks/events tab for the host and click on the events button.  That will confirm that something has happened...  If it's going offline for a brief time, see if it correlates to some operation like a backup, virus scan, vmotion, etc...

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