Health checks should accepts 3XX response codes as healthy

[rnett]

Having services respond with a 3XX response code is fairly common, for example to redirect to a "starting" page or an OAuth login. It's a valid successful response, however the ingress's health checks regard it as unhealthy.

[swetharepakula]

/kind feature

@rnett, thanks for creating the issue! Unfortunately the GCP load balancing healthcheck has a strict requirement on a 200 status. This is not configurable, so we (ingress controller) cannot support this feature. The healtcheck can have a large amount of traffic, we recommend having a dedicated healtcheck endpoint that does not require a OAuth login or have redirection that will limit CPU usage.

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/lifecycle stale

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/lifecycle rotten

[k8s-triage-robot]

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

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• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
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/close not-planned

[k8s-ci-robot]

@k8s-triage-robot: Closing this issue, marking it as "Not Planned".

In response to this:

The Kubernetes project currently lacks enough active contributors to adequately respond to all issues and PRs.

This bot triages issues according to the following rules:

• After 90d of inactivity, lifecycle/stale is applied
• After 30d of inactivity since lifecycle/stale was applied, lifecycle/rotten is applied
• After 30d of inactivity since lifecycle/rotten was applied, the issue is closed

You can:

• Reopen this issue with /reopen
• Mark this issue as fresh with /remove-lifecycle rotten
• Offer to help out with Issue Triage

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/close not-planned

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