Getting Data In

Why is splunk indexing two hostnames from one server?

airforceboricua
New Member

Backstory:
I'm running several instances in which they terminate nightly. These instances are automatically re-created in the morning. I have data volumes that are mounted to each instance that contains all of the splunk data. The splunk service is started after the initial boot scripts are ran.

Problem:
AWS provides a hostname by default which is changed with my boot scripts (Usually its something to this effect: 'ip-10-0-0-2'). Once splunk is started logs are being indexed as either the default hostname or the hostname in which my script has changed it to. The logs that are being sent by the default hostname are typically system logs such as syslog and a few others.

Question:
How can I fix this so that all logs are being sent under one hostname preferably the hostname that I have changed it to in my boot scripts?

0 Karma

hortonew
Builder

In $SPLUNK_HOME/etc/system/local there are two files which contain the hostname that Splunk uses when it sends data. You should modify these before going forward.

server.conf

[general]
serverName = <>

inputs.conf

[default]
host = <>
0 Karma
Got questions? Get answers!

Join the Splunk Community Slack to learn, troubleshoot, and make connections with fellow Splunk practitioners in real time!

Meet up IRL or virtually!

Join Splunk User Groups to connect and learn in-person by region or remotely by topic or industry.

Get Updates on the Splunk Community!

Cisco Data Fabric from Architecture to Investigation, Better SOC Visibility, and More ...

Splunk Lantern is Splunk’s customer success center that provides practical guidance from Splunk experts on key ...

The Trust Gap: Why a Data Foundation is Fundamental to an Agentic Enterprise

The Trust Gap: Why a data foundation is fundamental to an  Agentic Enterprise.   Agentic AI is transforming ...

Data Management Digest – September 2026

    Welcome to the September 2026 edition of Data Management Digest! September brought a fresh wave of ...