Deployment

List deployments

$ kubectl get deployments

Get a deployment

$ kubectl get deployment DEPLOYMENT_NAME

NAME                    READY   UP-TO-DATE   AVAILABLE   AGE
foobarb-backend-stg     2/2     2            2           2d18h

Optionally get as long YAML output as below.

$ kubectl get deployment DEPLOYMENT_NAME -o yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  annotations:
    deployment.kubernetes.io/revision: "12"
    meta.helm.sh/release-name: foobar-backend-stg
    meta.helm.sh/release-namespace: marketing
  creationTimestamp: "2021-01-19T18:14:59Z"
  generation: 12
  ...
....

Optionally write to a local YAML file by adding this:

> foo.yaml

Edit deployment

$ kubectl edit deploy DEPLOYMENT_NAME

Then you’ll get a text editor window which you can edit and save.

Scale

Scale the number of pods up or down using scale subcommand.

Use a name from kubectl get deployments here and add a prefix.

$ kubectl scale deployments/NAME --replicas 2

e.g.

$ kubectl scale deployments/helloworld-dev --replicas 2

Output:

deployment.apps/helloworld-dev scaled

Or updating your config’s replica count and apply the config.

$ kubectl apply -f myapp.yaml