Service Internal Traffic Policy

[andrewsykim]

Enhancement Description

• One-line enhancement description (can be used as a release note):

Introduce a new field spec.internalTrafficPolicy in Service that will allow clusterIP routing to be node local.

• Kubernetes Enhancement Proposal: https://github.com/kubernetes/enhancements/tree/master/keps/sig-network/2086-service-internal-traffic-policy
• Discussion Link: Previous discussions were held in KEP-2086: Service Internal Traffic Policy #1944, KEP 2004: Evolving Topology Aware Routing for Services #2005 and https://groups.google.com/g/kubernetes-sig-network/c/wXd1D_fKjqU
• Primary contact (assignee): @andrewsykim
• Responsible SIGs: sig-network
• Enhancement target (which target equals to which milestone):
  • Alpha release target: v1.21
  • Beta release target: v1.22
  • Stable release target: v1.26

[andrewsykim]

/sig network

[rmanyari]

Hi Andrew - I'm pretty interested in this feature and started looking at what needs to change following keps/sig-network/2086

I'll try to get a PR up in the next few days, it will be my first contribution to k8s so I'm probably going to be make blunders here and there :)

Let me know if this works for you, unless you already had planned working on this. Thanks!

[andrewsykim]

@rmanyari thanks for reaching out, I had actually started some work on this feature already which I have checked in a local branch. I would love and appreciate help reviewing the upcoming PR though

[rmanyari]

Fantastic! Just pushed a commit to my remote with the API changes: rmanyari/kubernetes@11cbdf5

Will keep poking at the actual change later tonight and I still need to read the contributions guidelines and sign the CLA and all that good stuff.

[andrewsykim]

Sorry in case I didn't make my last comment clear, I meant that I started to work on this already and I'm planning to open a PR soon. But I would appreciate your help reviewing my upcoming PR :)

[rmanyari]

Ah, got it! Sure, I can help reviewing/testing. I'll continue with my little experiment anyway just to see how far/right I would've implemented this.