azure - aks 报告 "Insufficient pods"

Question

我已完成描述的 Azure Cats&Dogs 教程 here我在 AKS 中启动应用程序的最后一步中遇到错误。 Kubernetes 报告我的 Pod 不足，但我不确定为什么会出现这种情况。几周前我已经完成了相同的教程，没有出现任何问题。

$ kubectl apply -f azure-vote-all-in-one-redis.yaml
deployment.apps/azure-vote-back created
service/azure-vote-back created
deployment.apps/azure-vote-front created
service/azure-vote-front created

$ kubectl get pods
NAME                                READY   STATUS    RESTARTS   AGE
azure-vote-back-655476c7f7-mntrt    0/1     Pending   0          6s
azure-vote-front-7c7d7f6778-mvflj   0/1     Pending   0          6s

$ kubectl get events
LAST SEEN   TYPE      REASON                 KIND         MESSAGE
3m36s       Warning   FailedScheduling       Pod          0/1 nodes are available: 1 Insufficient pods.
84s         Warning   FailedScheduling       Pod          0/1 nodes are available: 1 Insufficient pods.
70s         Warning   FailedScheduling       Pod          skip schedule deleting pod: default/azure-vote-back-655476c7f7-l5j28
9s          Warning   FailedScheduling       Pod          0/1 nodes are available: 1 Insufficient pods.
53m         Normal    SuccessfulCreate       ReplicaSet   Created pod: azure-vote-back-655476c7f7-kjld6
99s         Normal    SuccessfulCreate       ReplicaSet   Created pod: azure-vote-back-655476c7f7-l5j28
24s         Normal    SuccessfulCreate       ReplicaSet   Created pod: azure-vote-back-655476c7f7-mntrt
53m         Normal    ScalingReplicaSet      Deployment   Scaled up replica set azure-vote-back-655476c7f7 to 1
99s         Normal    ScalingReplicaSet      Deployment   Scaled up replica set azure-vote-back-655476c7f7 to 1
24s         Normal    ScalingReplicaSet      Deployment   Scaled up replica set azure-vote-back-655476c7f7 to 1
9s          Warning   FailedScheduling       Pod          0/1 nodes are available: 1 Insufficient pods.
3m36s       Warning   FailedScheduling       Pod          0/1 nodes are available: 1 Insufficient pods.
53m         Normal    SuccessfulCreate       ReplicaSet   Created pod: azure-vote-front-7c7d7f6778-rmbqb
24s         Normal    SuccessfulCreate       ReplicaSet   Created pod: azure-vote-front-7c7d7f6778-mvflj
53m         Normal    ScalingReplicaSet      Deployment   Scaled up replica set azure-vote-front-7c7d7f6778 to 1
53m         Normal    EnsuringLoadBalancer   Service      Ensuring load balancer
52m         Normal    EnsuredLoadBalancer    Service      Ensured load balancer
46s         Normal    DeletingLoadBalancer   Service      Deleting load balancer
24s         Normal    ScalingReplicaSet      Deployment   Scaled up replica set azure-vote-front-7c7d7f6778 to 1

$ kubectl get nodes
NAME                       STATUS   ROLES   AGE    VERSION
aks-nodepool1-27217108-0   Ready    agent   7d4h   v1.9.9

我能想到的唯一发生变化的是，我现在也运行了其他(更大的)集群，而我再次浏览此猫与狗教程的主要原因是因为我今天在其他集群上遇到了同样的问题。这是我的 Azure 帐户的资源限制问题吗？

太平洋标准时间 10-20/3:15 更新:请注意这三个集群如何显示它们使用相同的节点池，即使它们是在不同的资源组中创建的。另请注意 gem2-cluster 的“get-credentials”调用如何报告错误。我之前确实有一个名为 gem2-cluster 的集群，我将其删除并使用相同的名称重新创建(实际上我删除了 wole 资源组)。执行此操作的正确过程是什么？

$ az aks get-credentials --name gem1-cluster --resource-group gem1-rg
Merged "gem1-cluster" as current context in /home/psteele/.kube/config

$ kubectl get nodes -n gem1
NAME                       STATUS   ROLES   AGE     VERSION
aks-nodepool1-27217108-0   Ready    agent   3h26m   v1.9.11

$ az aks get-credentials --name gem2-cluster --resource-group gem2-rg
A different object named gem2-cluster already exists in clusters

$ az aks get-credentials --name gem3-cluster --resource-group gem3-rg
Merged "gem3-cluster" as current context in /home/psteele/.kube/config

$ kubectl get nodes -n gem1
NAME                       STATUS   ROLES   AGE   VERSION
aks-nodepool1-14202150-0   Ready    agent   26m   v1.9.11

$ kubectl get nodes -n gem2
NAME                       STATUS   ROLES   AGE   VERSION
aks-nodepool1-14202150-0   Ready    agent   26m   v1.9.11

$ kubectl get nodes -n gem3
NAME                       STATUS   ROLES   AGE   VERSION
aks-nodepool1-14202150-0   Ready    agent   26m   v1.9.11

Answer 1

您的 max-pods 设置为多少？当您达到每个节点的 pod 限制时，这是一个正常错误。

您可以通过以下方式检查当前每个节点的最大 Pod 数量:

$ kubectl get nodes -o yaml | grep pods
  pods: "30"
  pods: "30"

您当前的身份:

$ kubectl get pods --all-namespaces | grep Running | wc -l
  18