有默认的kubectl列模板参考吗？

Question

有没有办法从

kubectl

获取输出的默认模板，如果没有，是否有这些的在线资源？

它输出哪种格式并不重要，我只是对如何从对象 kubectl 查询构造输出的参考感兴趣。

我已经知道的事情

Kubernetes documentation 展示了如何构建 custom-columns （还有一个 go-template 和 jsonpath 方法可以做到这一点）来自

kubectl

的输出。

使用describe，或--output json或yaml，我可以获得完整的对象列表，并搜索它来组装类似的输出，但我想编写一个简单的工具，将一列添加到现有输出，为此我需要一个“默认输出”的起点。

Answer 1

你激起了我的好奇心。

这不是答案，但希望有帮助。

我尝试了以下方法来收集

kubectl

进行的 API 调用：

kubectl get deployments --all-namespaces --v=9

而且，输出包含以下内容的本质（我使用

kubectl proxy --port=8801

来简化这一点）：

curl \
--get \
--header "Accept: application/json;as=Table;v=v1;g=meta.k8s.io,application/json;as=Table;v=v1beta1;g=meta.k8s.io,application/json" \
http://localhost:8001/apis/apps/v1/deployments?limit=1

{
  "kind": "Table",
  "apiVersion": "meta.k8s.io/v1",
  "metadata": {
    "resourceVersion": "4949817",
    "continue": "[redacted]",
    "remainingItemCount": 1
  },
  "columnDefinitions": [
    {
      "name": "Name",
      "type": "string",
      "format": "name",
      "description": "Name must be unique within a namespace. Is required when creating resources, although some resources may allow a client to request the generation of an appropriate name automatically. Name is primarily intended for creation idempotence and configuration definition. Cannot be updated. More info: https://kubernetes.io/docs/concepts/overview/working-with-objects/names#names",
      "priority": 0
    },
    {
      "name": "Ready",
      "type": "string",
      "format": "",
      "description": "Number of the pod with ready state",
      "priority": 0
    },
    {
      "name": "Up-to-date",
      "type": "string",
      "format": "",
      "description": "Total number of non-terminated pods targeted by this deployment that have the desired template spec.",
      "priority": 0
    },
    {
      "name": "Available",
      "type": "string",
      "format": "",
      "description": "Total number of available pods (ready for at least minReadySeconds) targeted by this deployment.",
      "priority": 0
    },
    {
      "name": "Age",
      "type": "string",
      "format": "",
      "description": "CreationTimestamp is a timestamp representing the server time when this object was created. It is not guaranteed to be set in happens-before order across separate operations. Clients may not set this value. It is represented in RFC3339 form and is in UTC.\n\nPopulated by the system. Read-only. Null for lists. More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#metadata",
      "priority": 0
    },
    {
      "name": "Containers",
      "type": "string",
      "format": "",
      "description": "Names of each container in the template.",
      "priority": 1
    },
  "rows": [...]

所以，我并不完全清楚

Deployment

是如何解析为

Table

类型（我之前不知道存在），但它似乎与内置资源的打印列相匹配。