How to Fix \'no kind \'Deployment\' is registered for version \'apps/v1beta1\'\' Error When Deserializing Kubernetes YAML?

How to Deserialize Kubernetes YAML File

Issue

You've encountered an error when attempting to deserialize a Kubernetes YAML file into a Go struct using the api.Codecs.UniversalDecoder().Decode function. The error reads, "no kind "Deployment" is registered for version "apps/v1beta1."

Understanding the Problem

When deserializing a Kubernetes YAML file, you must ensure that the schema of the object is registered. In this case, the Deployment object is registered under the apps/v1beta1 version of the API.

Solution

To resolve the issue, you need to import the package that registers the schema for the apps/v1beta1 version. This can be achieved by adding the following line to your code:

<code class="go">_ "k8s.io/client-go/pkg/apis/extensions/install"</code>

This import ensures that the schema for the Deployment object is registered and available for use during the deserialization process.

Working Example

Here's a modified working Go program that incorporates the necessary import:

<code class="go">package main

import (
    "fmt"

    "k8s.io/client-go/pkg/api"
    "k8s.io/client-go/pkg/api/install"
    "k8s.io/client-go/pkg/apis/extensions/install"
)

var service = `
apiVersion: apps/v1beta1
kind: Deployment
metadata:
  name: my-nginx
spec:
  replicas: 2
  template:
    metadata:
      labels:
        run: my-nginx
    spec:
      containers:
      - name: my-nginx
        image: nginx
        ports:
        - containerPort: 80
`

func main() {
    decode := api.Codecs.UniversalDecoder().Decode
    obj, _, err := decode([]byte(service), nil, nil)
    if err != nil {
        fmt.Printf("%#v", err)
    }
    fmt.Printf("%#v\n", obj)
}</code>

When you run this program, the Deployment object should be successfully deserialized without encountering the aforementioned error.

The above is the detailed content of How to Fix \'no kind \'Deployment\' is registered for version \'apps/v1beta1\'\' Error When Deserializing Kubernetes YAML?. For more information, please follow other related articles on the PHP Chinese website!