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[root@poller001 nfdump]# tcpdump -nn -i eth2 host 10.10.1.1 port 9995 tcpdump: syntax error [root@poller001 nfdump]# tcpdump -nn -i eth2 host 10.10.1.1 and port 9995 tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on eth2, link-type EN10MB (Ethernet), capture size 65535 bytes 13:24:55.767037 IP 10.10.1.1.62757 > 10.215.1.7.9995: UDP, length 168 13:25:07.827152 IP 10.10.1.1.62757 > 10.215.1.7.9995: UDP, length 168 |
When we see output such as the example above we know this server is receiving flow data from the network device.
Check the Flow Data
The next step is to ensure the host in question is providing valid data that nfdump can process.
omkd Troubleshooting
If mongod is not running omkd will never start. Ever.
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