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Message #90367
[Bug 1995078] Re: OVN: HA chassis group priority is different than gateway chassis priority
** Also affects: kolla-ansible
Importance: Undecided
Status: New
** Also affects: kolla-ansible/yoga
Importance: Undecided
Status: New
** Also affects: kolla-ansible/wallaby
Importance: Undecided
Status: New
** Also affects: kolla-ansible/zed
Importance: Undecided
Status: New
** Also affects: kolla-ansible/xena
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1995078
Title:
OVN: HA chassis group priority is different than gateway chassis
priority
Status in kolla-ansible:
New
Status in kolla-ansible wallaby series:
New
Status in kolla-ansible xena series:
New
Status in kolla-ansible yoga series:
New
Status in kolla-ansible zed series:
New
Status in neutron:
Confirmed
Bug description:
OpenStack release affected - Wallaby, Xena and Yoga for sure
OVN version: 21.12 (from CentOS NFV SIG repos)
Host OS: CentOS Stream 8
Neutron creates External ports for bare metal instances and uses ha_chassis_group.
Neutron normally defines a different priority for Routers LRP gateway chassis and ha_chassis_group.
I have a router with two VLANs attached - external (used for internet
connectivity - SNAT or DNAT/Floating IP) and internal VLAN network
hosting bare metal servers (and some Geneve networks for VMs).
If an External port’s HA chassis group active chassis is different
than gateway chassis (external vlan network) active chassis - those
bare metal servers have intermittent network connectivity for any
traffic going through that router.
In a thread on ovs-discuss ML - Numan Siddique wrote that "it is recommended that the
same controller which is actively handling the gateway traffic also
handles the external ports"
More information in this thread -
https://mail.openvswitch.org/pipermail/ovs-
discuss/2022-October/052067.html
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References