未找到命名空间

Question

我在运行部署时看到以下错误：

Error from server (NotFound): error when creating "n3deployment.yaml": namespaces "n2" not found

我的 n3deployment.yaml 没有提到 n2？

一步步

1. 确保一切都是空的

c:\temp\k8s>kubectl get pods
No resources found.

c:\temp\k8s>kubectl get svc
No resources found.

c:\temp\k8s>kubectl get deployments
No resources found.

c:\temp\k8s>kubectl get namespaces
NAME          STATUS    AGE
default       Active    20h
docker        Active    20h
kube-public   Active    20h
kube-system   Active    20h

2. 创建文件

n3namespace.yaml
apiVersion: v1
kind: Namespace
metadata:
  name: n3

n3service.yaml
apiVersion: v1
kind: Service
metadata:
  name: my-app-n3
  namespace: n3
  labels:
    app: my-app-n3
spec:
  type: LoadBalancer
  ports:
  - name: http
    port: 80
    targetPort: http
    protocol: TCP
  selector:
    app: my-app-n3

n3deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: my-app-n3
  labels:
    app: my-app-n3
spec:
  replicas: 1
  selector:
    matchLabels:
      app: my-app-n3
  template:
    metadata:
      labels:
        app: my-app-n3
    spec:
      containers:
      - name: waiter
        image: waiter:v1
        ports:
        - containerPort: 80

3. 应用配置

c:\temp\k8s>kubectl apply -f n3namespace.yaml
namespace "n3" created

c:\temp\k8s>kubectl apply -f n3service.yaml
service "my-app-n3" created

c:\temp\k8s>kubectl apply -f n3deployment.yaml
Error from server (NotFound): error when creating "n3deployment.yaml": namespaces "n2" not found

我曾经有一个命名空间，n2但正如您所见，它不再存在。

Answer 1

就我而言，我之前没有执行过：

kubectl create namespace n3

Answer 2

我之前创建了两个上下文，并且我的 minikube 集群仍设置在该n2上下文中。我删除了上下文，重新运行命令，它起作用了。