Submariner support for load-balancer mode

[sridhargaddam]

Epic Description

Submariner load-balancer support

Currently, the load-balancer mode is an experimental feature in Submariner and is not well tested across various public and onPrem clusters. This EPIC is to understand the load-balancer implementations across AWS and GCP clouds to start with, finding any gaps and also its implications on HA-failover times.

Acceptance Criteria

Identify and where applicable fix the missing gaps in order to make load balancer a supported feature.

• Code complete
• The acceptance criteria met
• Unit/e2e test added & pass
• CI jobs pass
• Deployed using cloud-prepare+subctl
• Deployed using ACM/OCM addon
• Deploy using Helm
• Deployed on supported platforms (for e.g kind, OCP on AWS, OCP on GCP)
• Run subctl verify, diagnose and gather
• Uninstall
• Troubleshooting (gather/diagnose) added
• Documentation added
• Release notes added

Work Items

The following are the individual work items for this feature.

• Understand and if possible fix the issue with load balancer mode on AWS cloud.
  Related issue: LoadBalancer support for AWS NLB doesn't sync properly submariner#1410
  The submariner-gateway gives up too early waiting on a network loadbalancer to be ready submariner#1484
• Periodic Public IP watcher for any changes in the external-ip
• Analyze the HA failover time with load-balancer mode.
• Understand the implications on throughput when using the load balancer mode vs regular deployment.
• Verify that load balancer mode works fine with GCP clusters.
• AWS: Loadbalancer mode not working with VxLAN Cable driver
• Update subctl cloud prepare for various clouds like AWS/GCP/Azure/OSP to support load-balancer mode
• Issue with SM deployment after subctl prepare set number of gateways > 0
• Fix issue with public IP resolver
• Update subctl diagnose firewall inter-cluster
• Issue with Loadbalancer mode when using three clusters
• Verify that Loadbalancer works with multiple nodes labelled as GW nodes.
• Verify if LB mode is working fine on SNO clusters.
• Add support for LB services in KIND (MetalLB)
• Verify that Loadbalancer works on ROSA
• Verify that Loadbalancer works on ARO

[sridhargaddam]

Related issue: submariner-io/submariner#1410

[maayanf24]

@yboaron to update task list

[yboaron]

I think we can close this epic and track open tasks as separate issues.
@sridhargaddam @maayanf24 , WDYT ?

[maayanf24]

Sounds good. @yboaron Please make sure there are issues for all open tasks and then you can close this epic

[yboaron]

I opened this issue submariner-io/submariner#2096

[yboaron]

Going to close this issue