error running manager: timed out waiting for cache to be synced

[johnjelinek]

Version: snyk/kubernetes-scanner:v0.20.3

{
  "level": "error",
  "ts": "2023-12-07T19:42:08Z",
  "msg": "error running manager",
  "error": "failed to wait for namespace caches to sync: timed out waiting for cache to be synced",
  "stacktrace": "main.runController\n\tgithub.com/snyk/kubernetes-scanner/main.go:79\nmain.main\n\tgithub.com/snyk/kubernetes-scanner/main.go:58\nruntime.main\n\truntime/proc.go:250"
}

Stream closed EOF for snyk-monitor/kubernetes-scanner-6bd666488b-85l2l (kubernetes-scanner)

This appears to be the issue: kubernetes-sigs/controller-runtime#1786

I have a conversion webhook for multi-version CRD. This causes problems like this:

{
  "level": "error",
  "ts": "2023-12-07T19:49:26Z",
  "msg": "failed reconciliation",
  "error": "could not get object from api server: client rate limiter Wait returned an error: context canceled",
  "stacktrace": "github.com/snyk/kubernetes-scanner/internal/controller.(*reconciler).Reconcile\n\tgithub.com/snyk/kubernetes-scanner/internal/controller/controller.go:213\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Reconcile\n\tsigs.k8s.io/controller-runtime@v0.14.4/pkg/internal/controller/controller.go:122\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).reconcileHandler\n\tsigs.k8s.io/controller-runtime@v0.14.4/pkg/internal/controller/controller.go:323\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).processNextWorkItem\n\tsigs.k8s.io/controller-runtime@v0.14.4/pkg/internal/controller/controller.go:274\nsigs.k8s.io/controller-runtime/pkg/internal/controller.(*Controller).Start.func2.2\n\tsigs.k8s.io/controller-runtime@v0.14.4/pkg/internal/controller/controller.go:235"
}

and this

failed to list getambassador.io/v3alpha1, Kind=KubernetesEndpointResolver: conversion webhook for getambassador.io/v2, Kind=KubernetesEndpointResolver failed: Post "https://emissary-apiext.emissary-system.svc:443/webhooks/crd-convert?timeout=30s": service "emissary-apiext" not found

kubernetes-scanner shouldn't die if a conversion service (ie: emissary-apiext) doesn't exist.