s2s negotiation failed between forwarder running host and indexers

[parth995]

Using splunkforwarder-9.0.2-17e00c557dc1.x86_64 on forwarder linux box
Using splunk-9.0.4-de405f4a7979.x86_64 on indexer node.
From forwarder node I am able to telnet indexer node fine.
On forwarder node splunkd.log, I see below error for s2s negotiation failed.

ERROR AutoLoadBalancedConnectionStrategy [25021 TcpOutEloop] - s2s negotiation failed. response='NULL'
ERROR TcpOutputFd [25021 TcpOutEloop] - s2s negotiation failed. response='NULL'

[parth995]

Hey @isoutamo , May be I found the fix

I noticed inputs.conf on splunk indexer side was not having port mentioned on one of the block 

Added
"[splunktcp:<PORT>]" in $SPLUNK_BASE/etc/system/local on indexers

This fixed issue

[isoutamo]

Hi

can you paste your inputs.conf on indexer side and outputs.conf from UF side? Please anonymise (read: replace with xxx etc.) all data which can identified your environment and secrets!

And remove put those inside </> element on your reply!

r. Ismo