Bug 2307514

Summary:	nfsd metrics do not work on RHEL 9
Product:	[Fedora] Fedora EPEL	Reporter:	Marcel Freundl <marcel.freundl>
Component:	golang-github-prometheus-node-exporter	Assignee:	Mark E. Fuller <mark.e.fuller>
Status:	ASSIGNED ---	QA Contact:
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	epel9	CC:	go-sig, mark.e.fuller, mikel
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Hardware:	x86_64
OS:	Linux
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oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
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Description Marcel Freundl 2024-08-23 09:34:19 UTC

Description of problem:
On a RHEL 9 server with nfsd running and exported shares node-exporter does not export metrics for nfsd (/proc/net/rpc/nfsd).
In the node-exporter logs this error is shown:
prometheus-node-exporter[2997840]: ts=2024-08-23T08:38:36.096Z caller=collector.go:169 level=error msg="collector failed" name=nfsd duration_seconds=0.00077765 err="failed to retrieve nfsd stats: unknown NFSd metric line \"wdeleg_getattr\""

This issue seems to already be fixed upstream with release 1.8.0: https://github.com/prometheus/node_exporter/pull/2810



Version-Release number of selected component (if applicable):
golang-github-prometheus-node-exporter-1.3.1-5.el9.x86_64

How reproducible:
Configure an nfs export on RHEL 9 and install node-exporter
The nfsd collector is enabled by default in node-exporter


Actual results:
No nfsd metrics are exported


Expected results:
nfsd collector works and the metrics are exported

Comment 1 Mikel Olasagasti Uranga 2024-08-24 14:22:54 UTC

That fix is available for Fedora in the `node-exporter` package.

The package `golang-github-prometheus-node-exporter` has been deprecated and `node-exporter` will be the new package.

**BUT** the current only available package for EPEL9 is the old `golang-github-prometheus-node-exporter` that was a vendored build. A new solution is on the works[1] that will help to update the package for EPEL and automaticaly `golang-github-prometheus-node-exporter` will be replaced with `node-exporter`. Updating the package manually without the new method is something I want to avoid.

[1] https://gitlab.com/fedora/sigs/go/go-vendor-tools/-/issues/10