Getting Data In

DNS lookup failed for "$decideOnStartup": Host not found (authoritative)


When 'tail -f /opt/streamfwd/var/log/streamfwd.log' is executed

Why do I get the following message?

WARN [140610710128384] (HTTPRequestSender.cpp:1485) stream.SplunkSenderHTTPEventCollector - (#0) DNS lookup failed for "$decideOnStartup": Host not found (authoritative)
WARN [140610710128384] (HTTPRequestSender.cpp:1470) stream.SplunkSenderHTTPEventCollector - (#0) Recovery attempt failed

Labels (1)
Tags (2)
0 Karma


The error message says clearly "DNS lookup failed" which means that system resolver cannot determine reliably a hostname for the local IP. You can run some packet capture tool to verify what lookup exactly is performed at the start of the UF.

0 Karma


There's several older posts that seem to be related to a default setting not being correct in their case in an etc/system/local/inputs.conf.  I would check through your Splunk configs to see if there's a server name not set correctly, or if an override is in place that is causing it to use a non-existent hardcoded value instead of relying on what the OS thinks the server name is (i.e. look through our .conf files):

Solved: Inputs.conf $decideonstartup - Splunk Community

Why is host=$decideOnStartup for Splunk Stream, bu... - Splunk Community

How to Configure host = $decideOnStartup correctl... - Splunk Community

Solved: $decideOnStartup Remote Perfmon - Splunk Community

0 Karma

Loves-to-Learn Lots

same problem here

0 Karma
Get Updates on the Splunk Community!

Splunk Lantern | Getting Started with Edge Processor, Machine Learning Toolkit ...

Splunk Lantern is Splunk’s customer success center that provides advice from Splunk experts on valuable data ...

Enterprise Security Content Update (ESCU) | New Releases

In the last month, the Splunk Threat Research Team (STRT) has had 2 releases of new security content via the ...

Announcing the 1st Round Champion’s Tribute Winners of the Great Resilience Quest

We are happy to announce the 20 lucky questers who are selected to be the first round of Champion's Tribute ...