Tighten and flesh out networkpolicies #1670
Merged
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If someone wanted to restrict the egress, they would previously need quite a bit of exceptions. With this setup, I hope to make them function even though the Helm chart user removes denies all not explicitly allowed egress by removing the explicit allowance of 0.0.0.0/0 (all IPv4 egress).
UPDATE
This PR introduced a breaking change. All traffic towards the proxy pod, for example through the proxy-public service, must now be from pods labelled with
hub.jupyter.org/network-access-proxy-http: "true"
or from pods in a namespace labelled withhub.jupyter.org/network-access-proxy-http: "true"
.That this wasn't already the case, is considered a bug fix.