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Description of problem:

It seems rpmostree in rhel9 edge doesn't install files under /var/lib/grafana/plugins directory. That's where grafana-pcp tries to drop the plugin. This causes that plugin won't work in grafana on rhel edge.

Version-Release number of selected component (if applicable):

grafana-pcp-3.2.0-2.el9_0.x86_64


How reproducible:

every time

Steps to Reproduce:
1. create edge image with grafana-pcp in it
2. find /var/lib/grafana/plugins -type f
3. rpm -V grafana-pcp

Actual results:

There are no files in place, rpm -V also shows them missing

Expected results:

plugin to work in grafana

Additional info:

grafana-pcp probably should install them elsewhere, and it should be made sure /etc/grafana/grafana.ini plugins= clause would point correct place. Like /usr/share/grafana/plugins or smth. It should be a place one can install grafana plugins from gui too, so grafana needs write access to directory. I don't see grafana.ini taking plugins= multiple times, that would also take care of it.

If I'm not mistaken, /usr is mounted read-only on edge images, so making /usr/share/grafana/plugins writeable is not possible.

My current plan is to leave the plugin dir to the default of /var/lib/grafana/plugins, so that custom plugins can be installed with the GUI.
I'll install the grafana-pcp files in /usr/share/grafana-pcp, and use systemd-tmpfiles to create a symlink from /var/lib/grafana/plugins to that folder in /usr.

> If I'm not mistaken, /usr is mounted read-only on edge images, so making /usr/share/grafana/plugins writeable is not possible.

It's writable at image build time, that's where data that is shipped as part of the ostree commit (image) should go.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Moderate: grafana-pcp security and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2023:2177