Missing nf_conntrack_proto_gre module on Ubuntu Jammy breaks functional tests job

[Slawek Kaplonski]

Error https://zuul.opendev.org/t/openstack/build/6d774cc87eef44c49f27648f406ed9cb/logs

2022-10-21 06:36:54.291487 | controller | ++ functions-common:trueorfalse:221 : set +o xtrace
2022-10-21 06:36:54.295888 | controller | + lib/neutron_plugins/ovs_source:load_module:35 : '[' False == True ']'
2022-10-21 06:36:54.298412 | controller | + lib/neutron_plugins/ovs_source:load_module:38 : sudo modprobe nf_conntrack_proto_gre
2022-10-21 06:36:54.309618 | controller | modprobe: FATAL: Module nf_conntrack_proto_gre not found in directory /lib/modules/5.15.0-52-generic
2022-10-21 06:36:54.314725 | controller | + lib/neutron_plugins/ovs_source:load_module:38 : echo 'FAILED TO LOAD nf_conntrack_proto_gre'
2022-10-21 06:36:54.314777 | controller | FAILED TO LOAD nf_conntrack_proto_gre
2022-10-21 06:36:54.318160 | controller | + lib/neutron_plugins/ovs_source:load_module:38 : dmesg
2022-10-21 06:36:54.319864 | controller | dmesg: read kernel buffer failed: Operation not permitted
2022-10-21 06:37:05.571601 | controller | ERROR
2022-10-21 06:37:05.571906 | controller | {
2022-10-21 06:37:05.572001 | controller | "delta": "0:03:11.973578",
2022-10-21 06:37:05.572089 | controller | "end": "2022-10-21 06:36:54.324091",
2022-10-21 06:37:05.572174 | controller | "msg": "non-zero return code",
2022-10-21 06:37:05.572258 | controller | "rc": 1,
2022-10-21 06:37:05.572341 | controller | "start": "2022-10-21 06:33:42.350513"
2022-10-21 06:37:05.572423 | controller | }

[Slawek Kaplonski (slaweq)]

Actually the issue is with running "dmesg" command in https://opendev.org/openstack/devstack/src/commit/c3a82032ab91343114b957a26f6530b32fe60e2b/lib/neutron_plugins/ovs_source#L38 without sudo. In Ubuntu Jammy it seems that setting sysctl kernel.dmesg_restrict=1 by default thus running dmesg requires root privileges.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/devstack/+/862479

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/c/openstack/devstack/+/862479
Committed: https://opendev.org/openstack/devstack/commit/5e7afb779c469f593a1628e8f63c66989b7e2c49
Submitter: "Zuul (22348)"
Branch: master

commit 5e7afb779c469f593a1628e8f63c66989b7e2c49
Author: Slawek Kaplonski <email address hidden>
Date: Mon Oct 24 12:17:48 2022 +0200

    Run dmesg command with sudo

    It seems that setting "sysctl kernel.dmesg_restrict" was changed
    in Ubuntu 22.04 (Jammy) to "1" and because of that running "dmesg"
    command requires now root privileges.

    Closes-bug: #1994023

    Change-Id: I2adc76e3025fadf994bab2e2e1fd608e688874fc