I want to add new pod property in yaml file while creating pod in Kubernetes. By looking at old properties I did all required changes in the kubernetes source code but I still get below parsing error:
error: error validating "podbox.yml": error validating data: found invalid field newproperty for v1.Pod
Example Pod yaml file :
apiVersion: v1
kind: Pod
metadata:
name: podbox
namespace: default
spec:
containers:
- image: busybox
command:
- sleep
- "3600"
imagePullPolicy: IfNotPresent
name: podbox
resources:
requests:
memory: "64Mi"
cpu: "250m"
limits:
memory: "128Mi"
cpu: "1"
restartPolicy: Always
newproperty: false`newproperty`not getting parsed while creating Pod.
Is there any specific changes required?
Just remove the line
newproperty: false
from your YAML and you should be fine.
You don't want to add new fields to kind: Pod, because then your Kubernetes code will be on a fork and your config will be non-portable.
If you are planning a contribution to submit to the code Kubernetes code, you should first join the appropriate SIG (sig-node or sig-apps for Pod changes) and get support for your proposed change. Someone there can point you to example PRs that you can follow to add a field.
If you just need to put some extra information in a Pod that you or your own programs can parse, then use an annotation.
If you want to create a new type in your Kubernetes cluster, use a Custom Resource.
As far as I know you should be declaring then inside data:
apiVersion: v1
kind: Pod
metadata:
name: podbox
namespace: default
data:
newproperty: falseif you want an enviroment variable to be passed to the docker use this structure:
....
containers:
- name: name
image: some_image
env:
- name: SOME_VAR
value: "Hello from the kubernetes"
....