Hi all,
a while ago I posted
http://communities.vmware.com/message/1943414#1943414
and
http://communities.vmware.com/message/1943415#1943415
Since then we migrated to Hyperic 4.5 server and agent, but the problems of sporadic false positives persist:
- Machines are reported as unavailable
- Windows processes are reported as unavailable
- Tomcat instances are reported as unavailable
- Disk space is reported below threshold
The false positive alerts tend to come up in little bursts, but not always.
They tend to be emitted from machines under heavy CPU load, but some machines are not busy at all.
The time drift between the Hyperic agent and server does not seem to be a general cause for the alerts. We get false positives from machines for which Hyperic reports a drift of<20ms while it is perfectly happy with machines that have a drift of > 7000ms. (We will fix the time synchronization as a next step.)
All servers are Windows 2003 and 2008 running on hardware virtualized through ESX server.
I would be grateful for any hint where to look for the cause of those false positives.
Thanks and regards
Ralf
a while ago I posted
http://communities.vmware.com/message/1943414#1943414
and
http://communities.vmware.com/message/1943415#1943415
Since then we migrated to Hyperic 4.5 server and agent, but the problems of sporadic false positives persist:
- Machines are reported as unavailable
- Windows processes are reported as unavailable
- Tomcat instances are reported as unavailable
- Disk space is reported below threshold
The false positive alerts tend to come up in little bursts, but not always.
They tend to be emitted from machines under heavy CPU load, but some machines are not busy at all.
The time drift between the Hyperic agent and server does not seem to be a general cause for the alerts. We get false positives from machines for which Hyperic reports a drift of<20ms while it is perfectly happy with machines that have a drift of > 7000ms. (We will fix the time synchronization as a next step.)
All servers are Windows 2003 and 2008 running on hardware virtualized through ESX server.
I would be grateful for any hint where to look for the cause of those false positives.
Thanks and regards
Ralf