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Epic Name:
onprem-bgp-vips
Blocked:
False
Blocked Reason:
None
Ready:
False
Color Status:
Not Selected
Epic Status:
Done
Feature Link:
OCPSTRAT-264 - Compute and control plane nodes on separate subnets for on-prem IPI [ Phase 1]
Parent Link:
OCPSTRAT-264Compute and control plane nodes on separate subnets for on-prem IPI [ Phase 1]
Hierarchy Progress:
100
Hierarchy Progress Bar:

100% 100%

Epic Goal

Add tech-preview support to replace HAproxy & Keepalived by FRR, on the control plane, to load-balance the VIP traffic for both API & Ingress services

Why is this important?

Multiple (large) customers are requesting a stretched control plane where the VIPs would have to be able to float between multiple Failure Domains, for high availability
Using BGP Anycast to route the VIPs traffic would be more efficient than using Keepalived

with Keepalived, the VIP is on one host, so all API & Ingress traffic goes through one host at a time and when a failure happens, the VIP moves to another available node.
with BGP Anycast, the VIP is on all control plane nodes and BGP will provide the more efficient route to the client for reaching it.
- When paths to reach the VIP is equal between the domains, BGP will loadbalance the traffic (configurable at the infrastructure level), so no more bottleneck
- If a node or service (API, ingress) becomes unavailable, BGP will update the routing table and remove the route instantaneously.

CI - MUST be running successfully with tests automated
Release Technical Enablement - Provide necessary release enablement details and documents.
...

none for now.

CI - CI is running, tests are automated and merged.
Enhancement - <link to Enhancement PR>
Release Enablement <link to Feature Enablement Presentation>
DEV - Upstream code and tests merged: <link to meaningful PR or GitHub Issue>
DEV - Upstream documentation merged: <link to meaningful PR or GitHub Issue>
DEV - Downstream build attached to advisory: <link to errata>
QE - Test plans in Polarion: <link or reference to Polarion>
QE - Automated tests merged: <link or reference to automated tests>
DOC - Downstream documentation merged: <link to meaningful PR>

is related to

OPNET-195 Deploy with IPI nodes and UPI network infrastructure

relates to

OCPSTRAT-264 Compute and control plane nodes on separate subnets for on-prem IPI [ Phase 1]

links to