Splunk® Universal Forwarder

Forwarder Manual

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Known issues

This topic lists known issues that are specific to the universal forwarder. For information on fixed issues, see Fixed issues.

Universal forwarder issues

Date filed Issue number Description
2022-06-23 SPL-226019 Warning appears in the universal forwarder whenever any spl command is run: Warning: Attempting to revert the SPLUNK_HOME ownership Warning: Executing "chown -R splunk /opt/splunkforwarder". This warning is expected and will not affect functionality.
2022-06-22 SPL-226003 When forwarding from an 9.0 instance with useAck enabled, ingestion stops after some time with errors: "Invalid ACK received from indexer="

Workaround:
As a workaround, disable useAck in outputs.conf on the forwarder. After disabling, indexers start to ingest data.

If customers do need useACK to prevent data loss, disabling autoBatch in outputs.conf can remediate the issue too, but it impacts throughput - no worse than 8.x, but no improvement for 9.0.

2022-06-06 SPL-225379 Ownership of files mentioned in manifest file is splunk:splunk instead of root:root after enabling boot start as root user for initd

Workaround:
whenever changing UF user, pls manually chown SPLUNK_HOME to the new user, including first time install/upgrade, or manually enable boot-start
2022-05-16 SPL-224264, SPL-224265 Splunk UF not starting on Debian 11 (x86_64 and arm64)
2022-05-13 SPL-224167 Splunk UF for CentOS-7 (ARM64) is not available

Workaround:
UF for CentOS7 ARM 64 will be available in the 9.0.1 maintenance release.
2020-11-09 SPL-197140 UF failed to start on Solaris 11.3 with error: "symbol in6addr_any: referenced symbol not found"

Workaround:
1. Do not upgrade past Splunk 8.0.5 on Solaris 11.3

OR 2. Upgrade to Solaris 11.4

Last modified on 13 August, 2022
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This documentation applies to the following versions of Splunk® Universal Forwarder: 9.0.0


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