Bug 2064709 - Wrong addition of VIPs to all logical router pods leading to triggering GARP on different locations
Summary: Wrong addition of VIPs to all logical router pods leading to triggering GARP ...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat OpenStack
Classification: Red Hat
Component: python-networking-ovn
Version: 17.0 (Wallaby)
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: z9
: 16.1 (Train on RHEL 8.2)
Assignee: Luis Tomas Bolivar
QA Contact: Omer Schwartz
URL:
Whiteboard:
Depends On: 2053013 2064704 2064706
Blocks:
TreeView+ depends on / blocked
 
Reported: 2022-03-16 11:55 UTC by Luis Tomas Bolivar
Modified: 2022-12-07 20:26 UTC (History)
16 users (show)

Fixed In Version: python-networking-ovn-7.3.1-1.20220318083822.4e24f4c.el8ost
Doc Type: Bug Fix
Doc Text:
When a load balancer is created in a tenant network with a Virtual IP (VIP) and members, and the tenant network is connected to a router that is connected to the provider network, the Open Virtual Network (OVN) load balancer is associated with the OVN logical router. If the 'router' option was used for nat-addresses, ovn-controller sent GARP packets for that VIP on the provider network. As there was nothing to prevent different tenants in OpenStack from creating a subnet with the same Classless Inter-Domain Routing (CIDR) number and a load balancer with the same VIP, there could be several ovn-controllers generating GARP packets on the provider network for the same IP, each one with the MAC of the logical router port belonging to each tenant. This setup could be an issue for the physical network infrastructure. With this update, a new option (exclude-lb-vips-from-garp) is added in OVN[1] on the router gateway port. This flag ensures that no GARP packets are sent for the load balancer VIPs.
Clone Of: 2064706
Environment:
Last Closed: 2022-12-07 20:26:20 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
OpenStack gerrit 833728 0 None MERGED Ensure no GARPs are sent for Load Balancer VIPs on tenant networks 2022-03-16 11:55:22 UTC
Red Hat Issue Tracker OSP-13971 0 None None None 2022-03-16 12:05:12 UTC
Red Hat Product Errata RHBA-2022:8795 0 None None None 2022-12-07 20:26:38 UTC

Comment 15 errata-xmlrpc 2022-12-07 20:26:20 UTC 
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 (Red Hat OpenStack Platform 16.1.9 bug fix and enhancement advisory), 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/RHBA-2022:8795
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