Cilium: Support for Service Topology Awareness

[arzarif]

Kubernetes/kube-proxy will be supporting service topology awareness (likely as a gated alpha feature) in its upcoming 1.17 release. Feature parity with their topology-aware service routing implementation would be ideal.

Linking associated KEP and PR for additional context:

KEP:
https://github.com/kubernetes/enhancements/blob/master/keps/sig-network/20181024-service-topology.md

PR:
https://github.com/kubernetes/kubernetes/pull/72046

[jcrowthe]

We are definitely looking forward to this work. Where today we run node local DNS in a non-HA fashion, Service Topology would provide thorough HA.

[fristonio]

As mentioned in this slack thread, the feature will likely not make it to beta in the current state. The K8s networking team is working on pushing out a new KEP for this soon.
We are likely going to wait until the new KEP is released for the feature.

[arzarif]

@fristonio - thanks for the heads up!

[dharmab]

For the curious, the new KEP is here (still in early stages).