Get YAML for deployed Kubernetes services?

Question

I am trying to deploy my app to Kubernetes running in Google Container Engine.

The app can be found at: https://github.com/Industrial/docker-znc.

Answer 1

If you need to view and edit the file use:

kubectl edit service servicename

Answer 2

The same issue is discussed at kubernetes GitHub issues page and the user "alahijani" made a bash script that exports all yaml and writes them to single files and folders.

Since this question ranks well on Google and since I found that solution very good, I represent it here.

Bash script exporting yaml to sub-folders:

for n in $(kubectl get -o=name pvc,configmap,serviceaccount,secret,ingress,service,deployment,statefulset,hpa,job,cronjob)
do
    mkdir -p $(dirname $n)
    kubectl get -o=yaml --export $n > $n.yaml
done

Another user "acondrat" made a script that do not use directories, which makes it easy to make a kubectl apply -f later.

Bash script exporting yaml to current folder:

for n in $(kubectl get -o=name pvc,configmap,ingress,service,secret,deployment,statefulset,hpa,job,cronjob | grep -v 'secret/default-token')
do
    kubectl get -o=yaml --export $n > $(dirname $n)_$(basename $n).yaml
done

The last script does not include service account.

Answer 3

• Like mentioned above "--export" is one option to get the manifest corresponding to the kubeernetes objects
• But "--export" is considered to be buggy and there is a proposal to deprecate it
• Currently the better option is to do "-o yaml" or "-o json" and remove the unnecessary fields
• The main difference is "--export" is expected to remove the cluster specific settings (e.g. cluster service IP of a k8s service). But it is found to be inconsistent in this regard

Answer 4

1. You can get the yaml files of the resources using this command

   kubectl -n <namespace> get <resource type> <resource Name> -o yaml

2. To get the secret into your pod,

use something like this

env
- valueFrom
    secretKeyRef:
      name: secret_name
      key: key_name

or

envFrom
- secretRef:
    name: secret_name

 

Answer 5

Use this command to get yaml format of your service

kubectl get service servicename -n <namespace> -o yaml

You can put it in some file also

kubectl get service servicename -n <namespace> -o yaml > service.yaml

Answer 6

I know it is too old to answer, but hopefully, someone will find it helpful.

We can try below command to fetch a kind export from all namespace -

kubectl get <kind> --all-namespaces --export -o yaml