3.2.7 Updating your application
View in the book.
Buy the book.
Update the deployment manifest with the new version.
Using the editor, change the version.
It should look like:
Apply the change:
$ cd Chapter03/3.2_DeployingToKubernetes/
$ kubectl apply -f deploy.yaml
deployment.apps/timeserver configured
Get the status:
$ kubectl get deploy
NAME READY UP-TO-DATE AVAILABLE AGE
timeserver 3/3 1 3 16m
Watch the rollout in realtime
watch -d kubectl get deploy
Or, printing the changes:
$ kubectl get deploy -w
NAME READY UP-TO-DATE AVAILABLE AGE
timeserver 3/3 2 3 17m
timeserver 4/3 2 4 18m
timeserver 3/3 2 3 18m
timeserver 3/3 3 3 18m
You can also get the deployment by name (important if you have many deployments)
kubectl get deploy $DEPLOYMENT_NAME
$ kubectl get deploy timeserver
NAME READY UP-TO-DATE AVAILABLE AGE
timeserver 3/3 3 3 19m
And view just the Pods from the Deployment by using their labels (useful when you have lots of Pods)
$ kubectl get pods --selector=pod=timeserver-pod
NAME READY STATUS RESTARTS AGE
timeserver-7d778fcbc4-8cxwg 1/1 Running 0 2m5s
timeserver-f94cc5dd9-l56wg 1/1 Running 0 68s
timeserver-f94cc5dd9-qjksn 0/1 ContainerCreating 0 52s
timeserver-f94cc5dd9-xwbnx 1/1 Running 0 18m