Uploaded image for project: 'Knative Serving'
  1. Knative Serving
  2. SRVKS-641

Two revisions with the same generation are sometimes created for a single ksvc/configuration

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    • Serverless Sprint 191

      We have a test that very sporadically fails due to an unexpected extra revision existing.

      I could reproduce the problem once with a stripped-down test that only creates a ksvc, waits for its readiness, deletes, and repeats.

      Reproduced on 4.6.0-0.nightly-2020-10-03-051134, with current prod builds of Serverless 1.10

      oc get ksvc receiver-41 -o yaml

      apiVersion: serving.knative.dev/v1
kind: Service
metadata:
  annotations:
    serving.knative.dev/creator: kube:admin
    serving.knative.dev/lastModifier: kube:admin
  creationTimestamp: "2020-10-07T17:41:51Z"
  generation: 1
  labels:
    serving.knative.dev/visibility: cluster-local
  managedFields:
  - apiVersion: serving.knative.dev/v1
    fieldsType: FieldsV1
    fieldsV1:
      f:metadata:
        f:labels:
          .: {}
          f:serving.knative.dev/visibility: {}
      f:spec:
        .: {}
        f:template:
          .: {}
          f:metadata:
            .: {}
            f:annotations:
              .: {}
              f:autoscaling.knative.dev/maxScale: {}
              f:autoscaling.knative.dev/minScale: {}
              f:autoscaling.knative.dev/targetBurstCapacity: {}
            f:creationTimestamp: {}
          f:spec:
            .: {}
            f:containers: {}
    manager: eventing.test
    operation: Update
    time: "2020-10-07T17:41:51Z"
  - apiVersion: serving.knative.dev/v1
    fieldsType: FieldsV1
    fieldsV1:
      f:status:
        .: {}
        f:address:
          .: {}
          f:url: {}
        f:conditions: {}
        f:latestCreatedRevisionName: {}
        f:latestReadyRevisionName: {}
        f:observedGeneration: {}
        f:traffic: {}
        f:url: {}
    manager: controller
    operation: Update
    time: "2020-10-07T17:42:03Z"
  name: receiver-41
  namespace: myproject
  resourceVersion: "618874"
  selfLink: /apis/serving.knative.dev/v1/namespaces/myproject/services/receiver-41
  uid: 55a8be48-01c7-4679-885d-8d83969b6cd5
spec:
  template:
    metadata:
      annotations:
        autoscaling.knative.dev/maxScale: "1"
        autoscaling.knative.dev/minScale: "1"
        autoscaling.knative.dev/targetBurstCapacity: "0"
      creationTimestamp: null
    spec:
      containerConcurrency: 0
      containers:
      - env:
        - name: POD_NAME
          value: receiver-41
        - name: POD_NAMESPACE
          value: myproject
        image: image-registry.openshift-image-registry.svc:5000/ocf-qe-images/receiver
        imagePullPolicy: IfNotPresent
        name: user-container
        readinessProbe:
          successThreshold: 1
          tcpSocket:
            port: 0
        resources: {}
      timeoutSeconds: 300
  traffic:
  - latestRevision: true
    percent: 100
status:
  address:
    url: http://receiver-41.myproject.svc.cluster.local
  conditions:
  - lastTransitionTime: "2020-10-07T17:42:03Z"
    status: "True"
    type: ConfigurationsReady
  - lastTransitionTime: "2020-10-07T17:42:03Z"
    status: "True"
    type: Ready
  - lastTransitionTime: "2020-10-07T17:42:03Z"
    status: "True"
    type: RoutesReady
  latestCreatedRevisionName: receiver-41-kkdnz
  latestReadyRevisionName: receiver-41-kkdnz
  observedGeneration: 1
  traffic:
  - latestRevision: true
    percent: 100
    revisionName: receiver-41-kkdnz
  url: http://receiver-41.myproject.svc.cluster.local

      $ oc get revisions
NAME                CONFIG NAME   K8S SERVICE NAME    GENERATION   READY   REASON
receiver-41-kkdnz   receiver-41   receiver-41-kkdnz   1            True    
receiver-41-kqzc9   receiver-41   receiver-41-kqzc9   1            True   

      $ oc get revisions -o yaml
apiVersion: v1
items:
- apiVersion: serving.knative.dev/v1
  kind: Revision
  metadata:
    annotations:
      autoscaling.knative.dev/maxScale: "1"
      autoscaling.knative.dev/minScale: "1"
      autoscaling.knative.dev/targetBurstCapacity: "0"
      serving.knative.dev/creator: kube:admin
      serving.knative.dev/lastPinned: "1602092523"
    creationTimestamp: "2020-10-07T17:41:52Z"
    generateName: receiver-41-
    generation: 1
    labels:
      serving.knative.dev/configuration: receiver-41
      serving.knative.dev/configurationGeneration: "1"
      serving.knative.dev/route: receiver-41
      serving.knative.dev/service: receiver-41
    managedFields:
    - apiVersion: serving.knative.dev/v1
      fieldsType: FieldsV1
      fieldsV1:
        f:metadata:
          f:annotations:
            .: {}
            f:autoscaling.knative.dev/maxScale: {}
            f:autoscaling.knative.dev/minScale: {}
            f:autoscaling.knative.dev/targetBurstCapacity: {}
            f:serving.knative.dev/creator: {}
            f:serving.knative.dev/lastPinned: {}
          f:generateName: {}
          f:labels:
            .: {}
            f:serving.knative.dev/configuration: {}
            f:serving.knative.dev/configurationGeneration: {}
            f:serving.knative.dev/route: {}
            f:serving.knative.dev/service: {}
          f:ownerReferences:
            .: {}
            k:{"uid":"9d7692a2-a173-457c-8b36-553db58e604a"}:
              .: {}
              f:apiVersion: {}
              f:blockOwnerDeletion: {}
              f:controller: {}
              f:kind: {}
              f:name: {}
              f:uid: {}
        f:spec:
          .: {}
          f:containerConcurrency: {}
          f:containers: {}
          f:timeoutSeconds: {}
        f:status:
          .: {}
          f:conditions: {}
          f:containerStatuses: {}
          f:imageDigest: {}
          f:logUrl: {}
          f:observedGeneration: {}
          f:serviceName: {}
      manager: controller
      operation: Update
      time: "2020-10-07T17:42:05Z"
    name: receiver-41-kkdnz
    namespace: myproject
    ownerReferences:
    - apiVersion: serving.knative.dev/v1
      blockOwnerDeletion: true
      controller: true
      kind: Configuration
      name: receiver-41
      uid: 9d7692a2-a173-457c-8b36-553db58e604a
    resourceVersion: "618918"
    selfLink: /apis/serving.knative.dev/v1/namespaces/myproject/revisions/receiver-41-kkdnz
    uid: 4bdef05f-61bf-4a4a-ad86-40b5e70f1b55
  spec:
    containerConcurrency: 0
    containers:
    - env:
      - name: POD_NAME
        value: receiver-41
      - name: POD_NAMESPACE
        value: myproject
      image: image-registry.openshift-image-registry.svc:5000/ocf-qe-images/receiver
      imagePullPolicy: IfNotPresent
      name: user-container
      readinessProbe:
        successThreshold: 1
        tcpSocket:
          port: 0
      resources: {}
    timeoutSeconds: 300
  status:
    conditions:
    - lastTransitionTime: "2020-10-07T17:42:05Z"
      severity: Info
      status: "True"
      type: Active
    - lastTransitionTime: "2020-10-07T17:42:03Z"
      status: "True"
      type: ContainerHealthy
    - lastTransitionTime: "2020-10-07T17:42:03Z"
      status: "True"
      type: Ready
    - lastTransitionTime: "2020-10-07T17:42:03Z"
      status: "True"
      type: ResourcesAvailable
    containerStatuses:
    - imageDigest: image-registry.openshift-image-registry.svc:5000/ocf-qe-images/receiver@sha256:ee429c62d60dc1c521ea882a940cdcc675fbb853beb139862e66d05ba6e12455
      name: user-container
    imageDigest: image-registry.openshift-image-registry.svc:5000/ocf-qe-images/receiver@sha256:ee429c62d60dc1c521ea882a940cdcc675fbb853beb139862e66d05ba6e12455
    logUrl: http://localhost:8001/api/v1/namespaces/knative-monitoring/services/kibana-logging/proxy/app/kibana#/discover?_a=(query:(match:(kubernetes.labels.knative-dev%2FrevisionUID:(query:'4bdef05f-61bf-4a4a-ad86-40b5e70f1b55',type:phrase))))
    observedGeneration: 1
    serviceName: receiver-41-kkdnz
- apiVersion: serving.knative.dev/v1
  kind: Revision
  metadata:
    annotations:
      autoscaling.knative.dev/maxScale: "1"
      autoscaling.knative.dev/minScale: "1"
      autoscaling.knative.dev/targetBurstCapacity: "0"
      serving.knative.dev/creator: kube:admin
      serving.knative.dev/lastPinned: "1602092519"
    creationTimestamp: "2020-10-07T17:41:51Z"
    generateName: receiver-41-
    generation: 1
    labels:
      serving.knative.dev/configuration: receiver-41
      serving.knative.dev/configurationGeneration: "1"
      serving.knative.dev/service: receiver-41
    managedFields:
    - apiVersion: serving.knative.dev/v1
      fieldsType: FieldsV1
      fieldsV1:
        f:metadata:
          f:annotations:
            .: {}
            f:autoscaling.knative.dev/maxScale: {}
            f:autoscaling.knative.dev/minScale: {}
            f:autoscaling.knative.dev/targetBurstCapacity: {}
            f:serving.knative.dev/creator: {}
            f:serving.knative.dev/lastPinned: {}
          f:generateName: {}
          f:labels:
            .: {}
            f:serving.knative.dev/configuration: {}
            f:serving.knative.dev/configurationGeneration: {}
            f:serving.knative.dev/service: {}
          f:ownerReferences:
            .: {}
            k:{"uid":"9d7692a2-a173-457c-8b36-553db58e604a"}:
              .: {}
              f:apiVersion: {}
              f:blockOwnerDeletion: {}
              f:controller: {}
              f:kind: {}
              f:name: {}
              f:uid: {}
        f:spec:
          .: {}
          f:containerConcurrency: {}
          f:containers: {}
          f:timeoutSeconds: {}
        f:status:
          .: {}
          f:conditions: {}
          f:containerStatuses: {}
          f:imageDigest: {}
          f:logUrl: {}
          f:observedGeneration: {}
          f:serviceName: {}
      manager: controller
      operation: Update
      time: "2020-10-07T17:43:00Z"
    name: receiver-41-kqzc9
    namespace: myproject
    ownerReferences:
    - apiVersion: serving.knative.dev/v1
      blockOwnerDeletion: true
      controller: true
      kind: Configuration
      name: receiver-41
      uid: 9d7692a2-a173-457c-8b36-553db58e604a
    resourceVersion: "620170"
    selfLink: /apis/serving.knative.dev/v1/namespaces/myproject/revisions/receiver-41-kqzc9
    uid: 3c12b9aa-cbbb-4a5f-9dd5-845d55e4feae
  spec:
    containerConcurrency: 0
    containers:
    - env:
      - name: POD_NAME
        value: receiver-41
      - name: POD_NAMESPACE
        value: myproject
      image: image-registry.openshift-image-registry.svc:5000/ocf-qe-images/receiver
      imagePullPolicy: IfNotPresent
      name: user-container
      readinessProbe:
        successThreshold: 1
        tcpSocket:
          port: 0
      resources: {}
    timeoutSeconds: 300
  status:
    conditions:
    - lastTransitionTime: "2020-10-07T17:43:00Z"
      message: The target is not receiving traffic.
      reason: NoTraffic
      severity: Info
      status: "False"
      type: Active
    - lastTransitionTime: "2020-10-07T17:41:59Z"
      status: "True"
      type: ContainerHealthy
    - lastTransitionTime: "2020-10-07T17:41:59Z"
      status: "True"
      type: Ready
    - lastTransitionTime: "2020-10-07T17:41:59Z"
      status: "True"
      type: ResourcesAvailable
    containerStatuses:
    - imageDigest: image-registry.openshift-image-registry.svc:5000/ocf-qe-images/receiver@sha256:ee429c62d60dc1c521ea882a940cdcc675fbb853beb139862e66d05ba6e12455
      name: user-container
    imageDigest: image-registry.openshift-image-registry.svc:5000/ocf-qe-images/receiver@sha256:ee429c62d60dc1c521ea882a940cdcc675fbb853beb139862e66d05ba6e12455
    logUrl: http://localhost:8001/api/v1/namespaces/knative-monitoring/services/kibana-logging/proxy/app/kibana#/discover?_a=(query:(match:(kubernetes.labels.knative-dev%2FrevisionUID:(query:'3c12b9aa-cbbb-4a5f-9dd5-845d55e4feae',type:phrase))))
    observedGeneration: 1
    serviceName: receiver-41-kqzc9
kind: List
metadata:
  resourceVersion: ""
  selfLink: ""

      $ oc get configuration -o yaml
apiVersion: v1
items:
- apiVersion: serving.knative.dev/v1
  kind: Configuration
  metadata:
    annotations:
      serving.knative.dev/creator: kube:admin
      serving.knative.dev/lastModifier: kube:admin
    creationTimestamp: "2020-10-07T17:41:51Z"
    generation: 1
    labels:
      serving.knative.dev/route: receiver-41
      serving.knative.dev/service: receiver-41
      serving.knative.dev/visibility: cluster-local
    managedFields:
    - apiVersion: serving.knative.dev/v1
      fieldsType: FieldsV1
      fieldsV1:
        f:metadata:
          f:annotations:
            .: {}
            f:serving.knative.dev/creator: {}
            f:serving.knative.dev/lastModifier: {}
          f:labels:
            .: {}
            f:serving.knative.dev/route: {}
            f:serving.knative.dev/service: {}
            f:serving.knative.dev/visibility: {}
          f:ownerReferences:
            .: {}
            k:{"uid":"55a8be48-01c7-4679-885d-8d83969b6cd5"}:
              .: {}
              f:apiVersion: {}
              f:blockOwnerDeletion: {}
              f:controller: {}
              f:kind: {}
              f:name: {}
              f:uid: {}
        f:spec:
          .: {}
          f:template:
            .: {}
            f:metadata:
              .: {}
              f:annotations:
                .: {}
                f:autoscaling.knative.dev/maxScale: {}
                f:autoscaling.knative.dev/minScale: {}
                f:autoscaling.knative.dev/targetBurstCapacity: {}
              f:creationTimestamp: {}
            f:spec:
              .: {}
              f:containerConcurrency: {}
              f:containers: {}
              f:timeoutSeconds: {}
        f:status:
          .: {}
          f:conditions: {}
          f:latestCreatedRevisionName: {}
          f:latestReadyRevisionName: {}
          f:observedGeneration: {}
      manager: controller
      operation: Update
      time: "2020-10-07T17:42:03Z"
    name: receiver-41
    namespace: myproject
    ownerReferences:
    - apiVersion: serving.knative.dev/v1
      blockOwnerDeletion: true
      controller: true
      kind: Service
      name: receiver-41
      uid: 55a8be48-01c7-4679-885d-8d83969b6cd5
    resourceVersion: "618842"
    selfLink: /apis/serving.knative.dev/v1/namespaces/myproject/configurations/receiver-41
    uid: 9d7692a2-a173-457c-8b36-553db58e604a
  spec:
    template:
      metadata:
        annotations:
          autoscaling.knative.dev/maxScale: "1"
          autoscaling.knative.dev/minScale: "1"
          autoscaling.knative.dev/targetBurstCapacity: "0"
        creationTimestamp: null
      spec:
        containerConcurrency: 0
        containers:
        - env:
          - name: POD_NAME
            value: receiver-41
          - name: POD_NAMESPACE
            value: myproject
          image: image-registry.openshift-image-registry.svc:5000/ocf-qe-images/receiver
          imagePullPolicy: IfNotPresent
          name: user-container
          readinessProbe:
            successThreshold: 1
            tcpSocket:
              port: 0
          resources: {}
        timeoutSeconds: 300
  status:
    conditions:
    - lastTransitionTime: "2020-10-07T17:42:03Z"
      status: "True"
      type: Ready
    latestCreatedRevisionName: receiver-41-kkdnz
    latestReadyRevisionName: receiver-41-kkdnz
    observedGeneration: 1
kind: List
metadata:
  resourceVersion: ""
  selfLink: ""

        1. SRVKS-641.tar.bz2
          658 kB

              markusthoemmes Markus Thömmes (Inactive)
              maschmid@redhat.com Marek Schmidt
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                Created:
                Updated:
                Resolved: