Symptoms: In an NSX Data Center for vSphere 6.4.4 and later environment, you experience this symptom:
The NSX Edge is utilized at 100% CPU.
Environment
VMware NSX Data Center for vSphere 6.4.x
Cause
This issue occurs when configuring http monitor with extension "no-body" while using nagios in LB.
There is a nagios plugin upgraded from 2.0.3 to 2.2.1 since the release of NSX 6.4.4.
The nagios plugin check_http with extension 'no-body' causes the 100% CPU usage in this new version. Thus, LB loses the connection with all the backend servers, and the customer request is then broken.
Resolution
This is a known issue affecting VMware NSX Data Center for vSphere 6.4.4 and later versions.
Currently, there is no resolution.
Workaround: To work around this issue, remove the extension "no-body" in the http monitor.