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feat: make the webhook port configurable #301

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Argannor
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Description of your changes

As outlined in the issue below, when running Crossplane in certain environments (like EKS using Calico CNI), where the control plane resides outside the workload network it is necessary to run webhooks in the host network. This calls for the need to make the port configurable to avoid conflicts.

I opened crossplane/crossplane!5540 to allow a DeploymentRuntimeConfig to overwrite the ports of the crossplane managed services created for each provider / function.

Fixes #208

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  • Read and followed Crossplane's contribution process.
  • Run make reviewable test to ensure this PR is ready for review.

How has this code been tested

I deployed my fork of this and crossplane in our test cluster running EKS and Calico. With this I was able to run both Crossplane and provider-kubernetes inside the host network with custom ports.

This change only makes sense if my other PR gets accepted.

@@ -63,6 +63,7 @@ func main() {
leaderElection = app.Flag("leader-election", "Use leader election for the controller manager.").Short('l').Default("false").Envar("LEADER_ELECTION").Bool()
maxReconcileRate = app.Flag("max-reconcile-rate", "The number of concurrent reconciliations that may be running at one time.").Default("100").Int()
sanitizeSecrets = app.Flag("sanitize-secrets", "when enabled, redacts Secret data from Object status").Default("false").Envar("SANITIZE_SECRETS").Bool()
webhookPort = app.Flag("webhook-port", "The port the webhook listens on").Default("9443").Envar("WEBHOOK_PORT").Int()
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for all providers, also allow configuring metrics bind address which gets passed onto sigs.k8s.io/controller-runtime/pkg/metrics/server.Options ?
we can standardize on --webhook-port and --metrics-bind-address flags across all providers, similar to crossplane core flags..

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+1 for standardizing. I added the --metrics-bind-address as well as requested. Thank you for the feedback!

@ctenberge-oneid
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I could really use this sooner rather than later. @ravilr is there anyway this can be prioritized? Really appreciate your work either way.

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Conversion Webhook breaks deployment on clusters with seperate control plane
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