Why won't Splunk forwarder send data after update?

[ichesla1111]

Hello!

When I updated my Splunk Universal Forwarder, my data stopped sending data into Splunk.

I do not know how to find the upgraded Splunk servers tcpout address I need to update in the Splunk Forwarder configuration files (use new output server address to edit configuration files in the $SPLUNK_HOME/etc/system/local/ file location).

Is there a way to find the new tcpout server address/what address I need to change in my configuration file (after Splunk update) on the Splunks web application in settings??


What I need to find (highlighted in red)
server: 1xx.123.12.212:Port
(IPAdress.numberUpdate:Port)

***Does the 212 represent the latest Splunk software version (change it to the updated version of Splunk)?

Thank you.

[woodcock]

No upgrade should change any settings so you have some other kind of problem, I suspect.  Sometimes when a service is upgraded, the server is rebooted.  Sometimes when a server is rebooted a service that was manually stopped long ago, is automatically restarted (think selinix or firewalld).  That is where I would look.  Also, don't store your configurations for UF in $SPLUNK_HOME/etc/system/local; use base config apps and DS/chef/ansible/etc.

[richgalloway · Accepted solution]

The addresses that go into the Splunk Forwarder's outputs.conf file are the IP addresses of the Splunk indexers to which data is to be sent.  Addresses do not change when the forwarder is upgraded.

Take a step back and find the root cause of the problem.  Check the splunkd.log file on the forwarder to see what messages are logged by TcpOutputProc.  They should shed light on the cause.

If the cause is a new IP address then check the indexers for their current addresses (contact your Splunk or Linux admin for assistance, if needed).

[ichesla1111]

Thank you!!! Looking at the log helped me figure out the issue.