Receive Buffer Size Warning at Startup

Graylog Central (peer support)
1

I do get a Warning about the ReceiveBufferSIze at the Startup of Graylog:

WARN [NettyTransport] receiveBufferSize (SO_RCVBUF) for input SyslogUDPInput{title=TrendMicro Syslog UDP, type=org.graylog2.inputs.syslog.udp.SyslogUDPInput, nodeId=e392dcec-575a-4f51-a0f8-4c3550df339a} should be 262144 but is 212992.

The message appears on all inputs i have configured, but in the webinterface the Size is set to 262144 .

Do i have to worry about or can i ignor it?

Regards, Raphael

2

If you don’t have any problems with oversized UDP packets or dropped messages, you can ignore the warning.

Otherwise you might want to tune your operating system settings regarding UDP receive buffer sizes.

Also see the following related GitHub issue:
https://github.com/Graylog2/documentation/issues/26

3

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