Reviewed: https://review.opendev.org/c/openstack/neutron/+/871659
Committed:
https://opendev.org/openstack/neutron/commit/c609084b59c68f003153a58c2063f99b52f169e0
Submitter: "Zuul (22348)"
Branch:master
commit c609084b59c68f003153a58c2063f99b52f169e0
Author: Brian Haley
Date: Tue Jan 24
** Changed in: neutron
Assignee: (unassigned) => Brian Haley (brian-haley)
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https://bugs.launchpad.net/bugs/1834213
Title:
After kernel upgrade, nf_conntrack_ipv4
Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/neutron/+/871659
** Changed in: neutron
Status: New => In Progress
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I've filed a follow-up bug of neutron-openvswitch on kernel upgrade:
https://bugs.launchpad.net/charm-neutron-openvswitch/+bug/1851764
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** Changed in: charm-neutron-openvswitch
Status: Fix Committed => Fix Released
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https://bugs.launchpad.net/bugs/1834213
Title:
After kernel upgrade,
** Changed in: charm-neutron-openvswitch
Milestone: None => 19.10
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https://bugs.launchpad.net/bugs/1834213
Title:
After kernel upgrade, nf_conntrack_ipv4 module
Work around
Load:
sudo modprobe nf_conntrack_ipv4
Confirm:
lsmod | grep nf_conntrack_ipv4
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https://bugs.launchpad.net/bugs/1834213
Title:
After kernel upgrade,
on the new HWE kernel from ubuntu 18.04, which is linux 5.0, the modules are
not present anymore nf_conntrack_ipv4 and nf_conntrack_ipv6
i think it was merged into nf_conntrack but i'm not sure.
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Hi James. I don't think that Neutron should load this module. We are not
managing any modules in Neutron AFAICT. It is on deployment tools/distro to
ensure that proper modules are loaded.
Maybe we should add note about this module in
Adding a neutron bug-task to get an upstream opinion on whether neutron
should be loading these modules as the n-ovs-agent starts up.
** Also affects: neutron
Importance: Undecided
Status: New
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Reviewed: https://review.opendev.org/678956
Committed:
https://git.openstack.org/cgit/openstack/charm-neutron-openvswitch/commit/?id=b76a59299794700fae1878af513c90ca5182a9f6
Submitter: Zuul
Branch:master
commit b76a59299794700fae1878af513c90ca5182a9f6
Author: tpsilva
Date: Tue Aug 27
Fix up for review: https://review.opendev.org/#/c/678956/
** Changed in: charm-neutron-openvswitch
Assignee: (unassigned) => Tiago Pasqualini da Silva (tiago.pasqualini)
** Changed in: charm-neutron-openvswitch
Status: Confirmed => In Progress
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Just tested on devstack deployed on Xenial. The module gets loaded at
some point during neutron configuration on the deployment script.
It seems like a neutron bug to me. It relies on conntrack for the
firewall to work, but never actually loads the module. In most cases
something else will end up
Spent some time debugging this and I found some interesting bits. I was
able to reproduce this by deploying a xenial-queens environment with
VXLAN and the OVS firewall. Investigating this, here is what I found:
1) This module is first loaded on the compute nodes when libvirt-bin is
installed.
** Tags added: sts
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https://bugs.launchpad.net/bugs/1834213
Title:
After kernel upgrade, nf_conntrack_ipv4 module unloaded, no IP traffic
to instances
Status in
** Changed in: charm-neutron-openvswitch
Status: Incomplete => Confirmed
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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oddly, this did not happen on all hosts with this version kernel, it was
pseudo random and about ~30-40%. There must be another variable at
play.
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Kernel version
uname -r
4.4.0-150-generic
apt list --installed | fgrep image
cloud-image-utils/xenial-updates,now 0.27-0ubuntu25.1 all [installed,automatic]
genisoimage/xenial,now 9:1.1.11-3ubuntu1 amd64 [installed]
linux-image-4.4.0-137-generic/xenial-updates,xenial-security,now 4.4.0-137.163
Ignore prior comment:
$ lsmod | grep conntrack
nf_conntrack_ipv6 20480 1
nf_conntrack_ipv4 16384 1
nf_defrag_ipv4 16384 1 nf_conntrack_ipv4
nf_defrag_ipv6 36864 2 nf_conntrack_ipv6,openvswitch
nf_conntrack 131072 6
Raising a kernel bug task.
Note my testing was on Bionic not Xenial.
Drew - can you confirm which kernel version and packages you are using.
** Changed in: charm-neutron-openvswitch
Importance: Undecided => Low
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