others-How to create yaml quickly in kubernetes?

1. Purpose

In this post, I would demo how to create yaml for pod quickly in kubernetes.

2. Environment

  • Kubernetes

3. The solution

3.1 Copy from k8s official website

If you can access the k8s official website, you can try to access:

https://kubernetes.io/docs/concepts/workloads/pods/init-containers/

Then find the pod yaml template and copy the content of the yaml:

image-20210610162715198

3.2 Create yaml template by using kubectl

We can use kubectl to create the yaml template as follows:

$ kubectl run nginx --image=nginx --dry-run -o yaml

You would get this:

apiVersion: v1
kind: Pod
metadata:
  creationTimestamp: null
  labels:
    run: nginx
  name: nginx
spec:
  containers:
  - image: nginx
    name: nginx
    resources: {}
  dnsPolicy: ClusterFirst
  restartPolicy: Always
status: {}
controlplane $

The options are explained as follows:

  • --dry-run means this command would not execute, only dry run
  • -o yaml export the result as yaml format

4. Summary

In this post, I tried to explain the ways to create yaml in Kubernetes.