How to create a kubernetes service yaml file without --dry-run - kubernetes

Question

It seems that --dry-run flag is not available for service.
kubectl create service --
--add-dir-header --log-backtrace-at --server
--alsologtostderr --log-dir --skip-headers
--as --log-file --skip-log-headers
--as-group --log-file-max-size --stderrthreshold
--cache-dir --log-flush-frequency --tls-server-name
--certificate-authority --logtostderr --token
--client-certificate --match-server-version --user
--client-key --namespace --username
--cluster --password --v
--context --profile --vmodule
--insecure-skip-tls-verify --profile-output --warnings-as-errors
--kubeconfig --request-timeout
Is there a way to create a service yaml file without --dry-run=client option. I tried with the below command and getting an error.
kubectl create service ns-service nodeport --dry-run=client -o yaml >nodeport.yaml
Error: unknown flag: --dry-run
See 'kubectl create service --help' for usage.

Answer 1

There are two ways to do this.
=================================================================
First Way:- using kubectl create service
What wrong you are doing here is you are giving service name befor the service type in command that's why its failing.
correct way is
Syntax :
kubectl create service clusterip NAME [--tcp=<port>:<targetPort>] [--dry-run=server|client|none] [options]
Example :
kubectl create service nodeport ns-service --tcp=80:80 --dry-run=client -o yaml
=================================================================
Second way:-
Here you can use kubectl expose command to create a service file.
Let's assume you have a pod running with the name nginx. and you want to create a service for nginx pod.
then I will write below command to generate the service file.
Synatax:
kubectl expose [pod/deployment/replicaset] [name-of-pod/deployment/replicaset] --port=80 --target-port=8000 --dry-run=client -o yaml
Example:
kubectl expose pod nginx --port=80 --target-port=8000 --dry-run=client -o yaml
output:
apiVersion: v1
kind: Service
metadata:
creationTimestamp: null
labels:
run: nginx
name: nginx
spec:
ports:
- port: 80
protocol: TCP
targetPort: 8000
selector:
run: nginx
status:
loadBalancer: {}