使用yml文件创建deployment类型的pod时，执行命令报错如下：

error: error parsing deployment-nginx.yml: error converting YAML to JSON: yaml: line 19: did not find expected key

yml文件如下：

apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-deployment
  namespace: test
  labels:
    app: nginx
spec:
  replicas: 3
  selector:
    matchLabels:
      app: nginx
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
       image: nginx
       ports:
       - containerPort: 80

报错说19行有问题

应该是缩进的问题，于是修改了最后几行的缩进

再次创建

修改后的yml文件

  1 apiVersion: apps/v1
  2 kind: Deployment
  3 metadata:
  4   name: nginx-deployment
  5   namespace: test
  6   labels:
  7     app: nginx
  8 spec:
  9   replicas: 3
 10   selector:
 11     matchLabels:
 12       app: nginx
 13   template:
 14     metadata:
 15       labels:
 16         app: nginx
 17     spec:
 18       containers:
 19       - name: nginx
 20         image: nginx
 21         ports:
 22         - containerPort: 80

总结：
属于yml文件格式问题，k8s对于yml/yaml文件格式要求严格，缩进字符数一定要仔细。