json - 此Kubernetes服务规范的等效JSON是什么？

Question

我想传递JSON文件，而不是this YAML文件。等效的JSON是什么？我想在kubectl create -f ...命令中使用它:

apiVersion: v1
kind: Service
metadata:
  name: my-nginx-svc
  labels:
    app: nginx
spec:
  type: LoadBalancer
  ports:
  - port: 80
  selector:
    app: nginx
---
apiVersion: v1
kind: ReplicationController
metadata:
  name: my-nginx
spec:
  replicas: 2
  template:
    metadata:
      labels:
        app: nginx
    spec:
      containers:
      - name: nginx
        image: nginx
        ports:
        - containerPort: 80

Answer 1

有很多在线YAML到JSON(反之亦然)转换器，涵盖1.1和1.2规范。

我以前没有使用过Kubernetes，但是我可以看到您可以传递多个文档。基本上，您使用的YAML结构是两个文档的简短版本。 JSON没有与此等效的文件，因此您必须将其分成两个单独的文档(文件)。
YAML中的三个破折号是定义多个文档的一种方式。
因此，基本上以上不是JSON oblect / file，而是两个。

首先

{
  "apiVersion": "v1",
  "kind": "Service",
  "metadata": {
    "name": "my-nginx-svc",
    "labels": {
      "app": "nginx"
    }
  },
  "spec": {
    "type": "LoadBalancer",
    "ports": [
      {
        "port": 80
      }
    ],
    "selector": {
      "app": "nginx"
    }
  }
} 

第二

{
  "apiVersion": "v1",
  "kind": "ReplicationController",
  "metadata": {
    "name": "my-nginx"
  },
  "spec": {
    "replicas": 2,
    "template": {
      "metadata": {
        "labels": {
          "app": "nginx"
        }
      },
      "spec": {
        "containers": [
          {
            "name": "nginx",
            "image": "nginx",
            "ports": [
              {
                "containerPort": 80
              }
            ]
          }
        ]
      }
    }
  }
}

附带说明一下，由于这对您没有用处，因此为了将它们表示为一个 JSON对象，您需要一个数组。但这意味着 YAML也必须更改。所以为了有这个

[
  {
    "apiVersion": "v1",
    "kind": "Service",
    "metadata": {
      "name": "my-nginx-svc",
      "labels": {
        "app": "nginx"
      }
    },
    "spec": {
      "type": "LoadBalancer",
      "ports": [
        {
          "port": 80
        }
      ],
      "selector": {
        "app": "nginx"
      }
    }
  },
  {
    "apiVersion": "v1",
    "kind": "ReplicationController",
    "metadata": {
      "name": "my-nginx"
    },
    "spec": {
      "replicas": 2,
      "template": {
        "metadata": {
          "labels": {
            "app": "nginx"
          }
        },
        "spec": {
          "containers": [
            {
              "name": "nginx",
              "image": "nginx",
              "ports": [
                {
                  "containerPort": 80
                }
              ]
            }
          ]
        }
      }
    }
  }
]

YAML等价于此

---
-
  apiVersion: v1
  kind: Service
  metadata:
    name: my-nginx-svc
    labels:
      app: nginx
  spec:
    type: LoadBalancer
    ports:
    - port: 80
    selector:
      app: nginx
-
  apiVersion: v1
  kind: ReplicationController
  metadata:
    name: my-nginx
  spec:
    replicas: 2
    template:
      metadata:
        labels:
          app: nginx
      spec:
        containers:
        - name: nginx
          image: nginx
          ports:
          - containerPort: 80