knative service create timeout while instance rollout with 3 replicas

[yaswanthkumar1995]

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I have deployment of knative-serving with 3 replicas of knative-serving & 3 replicas of net-kourier contollers with pod anti-affinity such as each pod on each node & pdb of 66% so always 2 pods are available.

probes for knative-serving

livenessProbe: failureThreshold: 1 httpGet: path: /health port: probes scheme: HTTP periodSeconds: 5 successThreshold: 1 timeoutSeconds: 1 name: controller ports: - containerPort: 9090 name: metrics protocol: TCP - containerPort: 8008 name: profiling protocol: TCP - containerPort: 8080 name: probes protocol: TCP readinessProbe: failureThreshold: 2 httpGet: path: /readiness port: probes scheme: HTTP periodSeconds: 5 successThreshold: 1 timeoutSeconds: 1

probes for kourier

livenessProbe: failureThreshold: 3 grpc: port: 18000 service: "" periodSeconds: 10 successThreshold: 1 timeoutSeconds: 1 name: controller ports: - containerPort: 18000 name: http2-xds protocol: TCP readinessProbe: failureThreshold: 5 grpc: port: 18000 service: "" periodSeconds: 10 successThreshold: 1 timeoutSeconds: 1

While performing instance rollout with 25% of each time out of 4 instances i am facing timeout issue while creating knative service after 10mins. why doesn't it using other pods which are healthy & running to route the request & not retrying on the backend with healthy pods.

kn service create hello-23 --image=docker.io/johnralston/helloworld --env TARGET="test run" Warning: Kubernetes default value is insecure, Knative may default this to secure in a future release: spec.template.spec.containers[0].securityContext.allowPrivilegeEscalation, spec.template.spec.containers[0].securityContext.capabilities, spec.template.spec.containers[0].securityContext.runAsNonRoot, spec.template.spec.containers[0].securityContext.seccompProfile Creating service 'hello-23' in namespace 'default': **Error: timeout: service 'hello-23' not ready after 600 seconds** Run 'kn --help' for usage

pods
net-kourier-controller-67dc75cd58-blbk8 0/1 ContainerCreating 0 1s <none> ip-node-3.ec2.internal <none> <none> net-kourier-controller-67dc75cd58-hsdzv 1/1 Running 0 58m node-1 ip-node-1.ec2.internal <none> <none> net-kourier-controller-67dc75cd58-tzxn6 1/1 Running 0 4m43s node-2 ip-node-2.ec2.internal <none> <none>

[yaswanthkumar1995]

net-kourier logs error
{"severity":"ERROR","timestamp":"2024-08-01T16:51:04.670842621Z","logger":"net-kourier-controller","caller":"status/status.go:405","message":"Probing of http://hello-87-default.stage-ee-api.test-domain.com/ failed, IP: 10.208.56.218:8090, ready: false, error: error roundtripping http://hello-87-default.stage-ee-api.test-domain.com/healthz: context deadline exceeded (depth: 0)","commit":"3950a5b-dirty","knative.dev/controller":"knative.dev.net-kourier.pkg.reconciler.ingress.Reconciler","knative.dev/kind":"networking.internal.knative.dev.Ingress","knative.dev/traceid":"46156891-f482-4d8a-8b98-2091d65ae751","knative.dev/key":"default/hello-87","stacktrace":"knative.dev/networking/pkg/status.(*Prober).processWorkItem\n\tknative.dev/[email protected]/pkg/status/status.go:405\nknative.dev/networking/pkg/status.(*Prober).Start.func1\n\tknative.dev/[email protected]/pkg/status/status.go:290"}