Log forwarding: incorrect fluent-bit path "Fluent Bit exe not found."

[rcwsr]

VM running Rocky 9.5 was updated, new relic infrastructure agent also updated but stopped forwarding logs to NR.

I've actually resolved the issue by explicitly setting fluent_bit_exe_path, see below.

Description

Describe the problem you're encountering.
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VM running Rocky 9 was updated, new relic infrastructure agent also updated but stopped forwarding logs to NR.

Debug logs showed fluent bit executable not found at /opt/fluent-bit/bin/fluent-bit, but docs say default value is /opt/td-agent-bit/bin/td-agent-bit. Neither of these paths exist.

time="2025-04-09T10:44:27+01:00" level=debug msg="Fluent Bit exe not found." component=integrations.Supervisor fbExePath=/opt/fluent-bit/bin/fluent-bit process=log-forwarder
time="2025-04-09T10:44:27+01:00" level=debug msg="Log forwarder is not available for this platform. The agent will start without log forwarding support." component=AgentService service=newrelic-infra

td-agent-bit does not appear to be installed

fluent-bit does however exist:

$ fluent-bit --version
Fluent Bit v3.2.8
Git commit: 

which fluent-bit 
/bin/fluent-bit

changed log config to set (it was not set previously) fluent_bit_exe_path: "/bin/fluent-bit" and restarted the service - logs now appear.

Expected Behavior

Logs forwarded using bundled fluent-bit

Troubleshooting or NR Diag results

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time="2025-04-09T10:44:27+01:00" level=debug msg="Fluent Bit exe not found." component=integrations.Supervisor fbExePath=/opt/fluent-bit/bin/fluent-bit process=log-forwarder
time="2025-04-09T10:44:27+01:00" level=debug msg="Log forwarder is not available for this platform. The agent will start without log forwarding support." component=AgentService service=newrelic-infra

Steps to Reproduce

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Not entirely sure how to reproduce, all I know is that our system did a package update, probably upgrading an outdated version of newrelic infra agent.

Your Environment

ec2 instance running:
Rocky 9.5 - dnf update ran
newrelic infra agent: 1.63.1
fluent-bit: 3.2.8

Additional context

infrastructure-agent/cmd/newrelic-infra/newrelic-infra.go

Line 484 in 800c613

aslog.Debug("Log forwarder is not available for this platform. The agent will start without log forwarding support.")

infrastructure-agent/pkg/integrations/v4/supervisor_fb.go

Line 107 in 800c613

func (c *fBSupervisorConfig) IsLogForwarderAvailable() bool {

https://docs.newrelic.com/docs/logs/forward-logs/forward-your-logs-using-infrastructure-agent/

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[workato-integration]

https://new-relic.atlassian.net/browse/NR-401738

[maya-jha]

Cannot reproduce this. Tested for a Rocky9 instance and Infra agent is installing fluent bit at /opt/fluent-bit/bin/fluent-bit location only. It seems like fluent bit was installed as standalone installation for given issue thereby path is not matching with what is provided by infra agent.