APM is not receiving data from the Probe
Possible causes of missing data for Application performance monitoring (APM) from the Flowmon Probe.
Why there is no data for APM? The green icon for the Probe (APM -> Settings -> Probes) is green, however from Probe statistics is obvious that Probe is not sending any data.
|Steps to Reproduce:|
WARN SnifferTcpHandler - TCPHandler::ProcessPacket - HalfOpen - 172.30.29.73:1521-172.30.191.57:43498[SV]: HalfOpen|Closed|Open : data from Server but missing SYN from Client
WARN SnifferTcpHandler - TCPHandler::ProcessPacket - HalfOpen - 172.30.191.58:59312-172.30.29.72:1521[CL]: HalfOpen|Open|Closed : data from Client but missing SYN from Server
|Cause:||Missing SYN packets from client or server.|
1. Verify that Flowmon has full visibility of the traffic from application servers.
2. Check the configuration of mirror ports of a VMware Distributed vSwitch (DSwitch).
Deployment guide for VMware:
Choose your version -> Deployment Guide for Virtual Appliances -> Chapter 4.10