抢占: 0/1节点可用:1抢占对调度没有帮助

Question

在Mac上，我创建了一个单一节点集群，然后按照https://kind.sigs.k8s.io/docs/user/ingress/中的指示，尝试安装nginx入口。

kind create cluster --name devops

kubectl apply --filename https://raw.githubusercontent.com/kubernetes/ingress-nginx/master/deploy/static/provider/kind/deploy.yaml

kubectl wait --namespace ingress-nginx --for=condition=ready pod --selector=app.kubernetes.io/component=controller --timeout=180s

它超时了；对于节点来说，没有污染。

kubectl get node
NAME                   STATUS   ROLES           AGE   VERSION
devops-control-plane   Ready    control-plane   16m   v1.25.2

kubectl describe node devops-control-plane | grep Taint
Taints:             <none>

超时是由于未能在主节点上放置吊舱。

kubectl -n ingress-nginx describe pod ingress-nginx-controller-7d68cdddd8-tkzzz
...
Node-Selectors:              ingress-ready=true
                             kubernetes.io/os=linux
Tolerations:                 node-role.kubernetes.io/control-plane:NoSchedule
                             node-role.kubernetes.io/master:NoSchedule
                             node.kubernetes.io/not-ready:NoExecute op=Exists for 300s
                             node.kubernetes.io/unreachable:NoExecute op=Exists for 300s
Events:
  Type     Reason            Age   From               Message
  ----     ------            ----  ----               -------
  Warning  FailedScheduling  104s  default-scheduler  0/1 nodes are available: 1 node(s) didn't match Pod's node affinity/selector. preemption: 0/1 nodes are available: 1 Preemption is not helpful for scheduling.

我在这里做错了什么？

Answer 1

请阅读有关将Pods分配给节点的文档！我看到你的吊舱上有一些节点选择器。这可能是调度失败的原因。您可以移除节点选择器，也可以将所需的标签添加到节点(我猜入口就绪标签丢失了)：

kubectl label nodes devops-control-plane ingress-ready=true