ceph status check with nrpe will fail due to necessary package not being installed

[Yoshi Kadokawa]

This is happening on deployment with Ceph on Jammy and adding nrpe-external-master relation.
When that relation is added, this code[0] is triggered, but faililng with installing python-dbus package,
as you can see from the following log. I believe it is now python3-dbus from Jammy.

2022-11-29 01:19:01 INFO juju.worker.uniter.operation runhook.go:149 skipped "nrpe-external-master-relation-created" hook (missing)
2022-11-29 01:19:06 INFO unit.ceph-mon/0.juju-log server.go:316 nrpe-external-master:503: Installing ['python-dbus', 'lockfile-progs'] with options: ['--option=Dpkg::Options::=--force-confold']
2022-11-29 01:19:06 WARNING unit.ceph-mon/0.nrpe-external-master-relation-joined logger.go:60 E: Package 'python-dbus' has no installation candidate

Because of the above error, it will skip installing lockfile-progs package. And because of this the following critical alert is triggered from nrpe.

/var/lib/nagios/cat-ceph-status.txt: does not exist.

[0] https://opendev.org/openstack/charm-ceph-mon/src/branch/master/src/ceph_hooks.py#L1106

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/charm-ceph-mon/+/870718

[Nobuto Murata (nobuto)]

Subscribing ~field-high.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/quincy
Review: https://review.opendev.org/c/openstack/charm-ceph-mon/+/870720

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/charm-ceph-mon/+/870718
Committed: https://opendev.org/openstack/charm-ceph-mon/commit/df676a097f780679f73c441d7fb67cdacde634c6
Submitter: "Zuul (22348)"
Branch: master

commit df676a097f780679f73c441d7fb67cdacde634c6
Author: Nobuto Murata <email address hidden>
Date: Tue Jan 17 17:09:48 2023 +0900

    Make sure lockfile-progs package is installed

    Also, drop python-dbus for simplicity since "check_upstart_job" in nrpe
    is not enabled any longer. And the python-dbus package is no longer
    available on jammy either.

        [on focal with systemd]
        $ ls -1 /etc/nagios/nrpe.d/
        check_ceph.cfg
        check_conntrack.cfg
        check_reboot.cfg
        check_systemd_scopes.cfg

    Closes-Bug: #1998163
    Change-Id: I30bc22ae8509367207004b90eb2c38ad0fae9ffe

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/quincy.2
Review: https://review.opendev.org/c/openstack/charm-ceph-mon/+/871554

[OpenStack Infra (hudson-openstack)]

Change abandoned by "Nobuto Murata <email address hidden>" on branch: stable/quincy
Review: https://review.opendev.org/c/openstack/charm-ceph-mon/+/870720
Reason: In favor of https://review.opendev.org/c/openstack/charm-ceph-mon/+/871554

I've been told that the quincy.2 branch instead of quincy is the one to be used for charm publishing from now on.
https://launchpad.net/~openstack-charmers/charm-ceph-mon/+charm/charm-ceph-mon.stable-quincy.2.quincy

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/charm-ceph-mon/+/871554
Committed: https://opendev.org/openstack/charm-ceph-mon/commit/6b643ebffca4fa6dcfc19625337756a63d4c494d
Submitter: "Zuul (22348)"
Branch: stable/quincy.2

commit 6b643ebffca4fa6dcfc19625337756a63d4c494d
Author: Nobuto Murata <email address hidden>
Date: Tue Jan 17 17:09:48 2023 +0900

    Make sure lockfile-progs package is installed

    Also, drop python-dbus for simplicity since "check_upstart_job" in nrpe
    is not enabled any longer. And the python-dbus package is no longer
    available on jammy either.

        [on focal with systemd]
        $ ls -1 /etc/nagios/nrpe.d/
        check_ceph.cfg
        check_conntrack.cfg
        check_reboot.cfg
        check_systemd_scopes.cfg

    Closes-Bug: #1998163
    Change-Id: I30bc22ae8509367207004b90eb2c38ad0fae9ffe
    (cherry picked from commit df676a097f780679f73c441d7fb67cdacde634c6)