I have one docker image and I am using following command to run it.
docker run -it -p 1976:1976 --name demo demo.docker.cloud.com/demo/runtime:latest
I want to run the same in Kubernetes. This is my current yaml file.
apiVersion: v1
kind: Deployment
metadata:
name: demo-deployment
labels:
app: demo
spec:
replicas: 1
selector:
matchLabels:
app: demo
template:
metadata:
labels:
app: demo
spec:
containers:
- name: demo
image: demo.docker.cloud.com/demo/runtime:latest
ports:
- containerPort: 1976
imagePullPolicy: NeverThis yaml file covers everything except flag "-it". I am not able to find its Kubernetes equivalent. Please help me out with this. Thanks
I assume you are trying to connect a shell to your running container. Following the guide at https://kubernetes.io/docs/tasks/debug-application-cluster/get-shell-running-container/ - You would need the following commands. To apply your above configuration:
Create the pod: kubectl apply -f ./demo-deployment.yaml
Verify the Container is running: kubectl get pod demo-deployment
Get a shell to the running Container: kubectl exec -it demo-deployment -- /bin/bash
Looking at the Container definition in the API reference, the equivalent options are stdin: true and tty: true.
(None of the applications I work on have ever needed this; the documentation for stdin: talks about "reads from stdin in the container" and the typical sort of server-type processes you'd run in a Deployment don't read from stdin at all.)
kubectl run is the close match to docker run based on the requested scenario.
Some examples from Kubernetes documentation and it's purpose :
kubectl run -i --tty busybox --image=busybox -- sh # Run pod as interactive shell
kubectl run nginx --image=nginx -n
mynamespace # Run pod nginx in a specific namespace
kubectl run nginx --image=nginx # Run pod nginx and write its spec into a file called pod.yaml
--dry-run=client -o yaml > pod.yaml