horizontalpodautoscaler最小和最大复制副本为1创建2个pod

Question

我正在尝试运行horizontalpodautoscaler资源，将mix和max副本定义为1。不知怎么的，一旦它开始运行，2个实例的pod同时运行，然后1个pod被终止。结束状态我有1个pod在运行。

这是HPA资源的正常行为吗?它以某种方式创建了具有2个pod的副本集，即使最大值是1

谢谢

Answer 1

以下是来自所有相关资源的事件流：

HPA Events:
NAME            REFERENCE                  TARGETS         MINPODS   MAXPODS   REPLICAS   AGE
example-ms   Deployment/example-ms   <unknown>/50%   1         1         0          0s
example-ms   Deployment/example-ms   <unknown>/50%   1         1         0         1s
example-ms   Deployment/example-ms   <unknown>/50%   1         1         2         3s
example-ms   Deployment/example-ms   <unknown>/50%   1         1         1         33s


Replica Set Events:
NAME                              DESIRED   CURRENT   READY     AGE
example-ms-59c9b45565   1         1         0         1s
example-ms-76896c7f7f   1         1         1         2s
example-ms-59c9b45565   1         1         1         2s
example-ms-76896c7f7f   1         1         1         32s
example-ms-59c9b45565   1         1         1         32s
example-ms-76896c7f7f   0         1         1         32s
example-ms-76896c7f7f   0         1         1         32s
example-ms-76896c7f7f   0         0         0         32s

Pod Events:
NAME                                    READY     STATUS              RESTARTS   AGE
example-ms-59c9b45565-6b5v8   0/1       ContainerCreating   0         0s
example-ms-76896c7f7f-cth7x   1/1       Running   0         2s
example-ms-59c9b45565-6b5v8   1/1       Running   0         2s
example-ms-59c9b45565-d2k8w   0/1       Terminating   0         2m
example-ms-59c9b45565-d2k8w   0/1       Terminating   0         2m
example-ms-59c9b45565-d2k8w   0/1       Terminating   0         2m
example-ms-59c9b45565-d2k8w   0/1       Terminating   0         2m
example-ms-76896c7f7f-cth7x   1/1       Terminating   0         32s
example-ms-76896c7f7f-cth7x   0/1       Terminating   0         1m
example-ms-76896c7f7f-cth7x   0/1       Terminating   0         1m
example-ms-76896c7f7f-cth7x   0/1       Terminating   0         1m




Deployment Spec:
spec:
  minReadySeconds: 30
  progressDeadlineSeconds: 120
  replicas: 1
  revisionHistoryLimit: 15
  selector:



Deployment status:
tatus:
  availableReplicas: 1
  conditions:
  - lastTransitionTime: 2019-04-21T08:51:03Z
    lastUpdateTime: 2019-04-21T08:51:35Z
    message: ReplicaSet "example-ms-59c9b45565" has successfully progressed.
    reason: NewReplicaSetAvailable
    status: "True"
    type: Progressing
  - lastTransitionTime: 2019-04-21T16:53:02Z
    lastUpdateTime: 2019-04-21T16:53:02Z
    message: Deployment has minimum availability.
    reason: MinimumReplicasAvailable
    status: "True"
    type: Available
  observedGeneration: 3
  readyReplicas: 1
  replicas: 1
  updatedReplicas: 1

Answer 2

我建议您检查一下是否在deployment.yaml中定义了某个“副本”。如果您定义了它，那么初始pod数量将是您在副本上设置的数量。在此之后，HPA将开始工作，并将终止其中一个pod，因为您将最大值定义为1。有关更多帮助，请共享您的*.yaml文件。