Getting Data In

Why has the Splunk forwarder on Windows 2008R2 created so many sessions that no new sessions can be created?

yutaka1005
Builder

In my environment, there are two components like below.
Splunk 6.2.7 on Linux.
Splunk 6.2.7 on Windows 2008R2

Yesterday, when I checked netstat on windows, Forwarder was creating about ten thousand sessions in status "TIME_WAIT", so couldn't create new sessions!

For now, it has been normal, because I've rebooted it.
But I am worried that it will happen again.

Why did it happen?
I checked splunkd.log, and I found so many connection failed messages while it was happening.(I don't have any idea why the connection failed.)
If the connection between Splunk and Splunk forwarder has been failing for a long time, is that why it this happened?

I really appreciate if somebody can tell me about it.

I checked the answer below, but I don't configure connection_host = dns, so I don't think that this cause applys to this phenomenon.
https://answers.splunk.com/answers/114447/splunk-to-splunk-communication-stuck-in-close-wait.html

0 Karma

splunker12er
Motivator

How is your indexing performance? Did you take a look at your indexer splunkd.log ?

0 Karma
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