Example app that uses k8s for deployment
A kubernetes deployment descriptor is provided, if needed modify the VERSION property Makefile then run the following
make
kubectl create -f k8s-sample-app.yml
watch -n 0.2 -d http --timeout 1 `minikube service k8s-sample-app --url`/foo
Create deployment
kubectl create -f k8s-sample-app.yml
Update deployment after making a change to k8s-sample-app.yml
kubectl replace -f k8s-sample-app.yml
View deployment status
kubectl rollout stuats deployments k8s-sample-app
Rollback deployment
kubectl rollout undo deployment/k8s-sample-app
Scale deployment
kubectl scale deployment k8s-sample-app --replicas 10
Auto scale deployment
kubectl autoscale deployment k8s-sample-app --min=1 --max=10 --cpu-percent=80
SSH access container
kubectl exec -it <pod id> -- /bin/ash
Kubernetes will automatically allow services to be addressable via their service name.
kubectl create -f k8s-sample-app2.yml
Get logs for app2
kubectl logs <pod id>
Kubernetes can manage application configuration using ConfigMaps
kubectl create -f k8s-sample-configmap.yml
Interact with the container
watch -n 0.2 http --timeout 1 `minikube service k8s-sample-configmap --url`/bar
Change the ConfigMap value
kubectl edit configmap sample-configmap
Restart the pod to pick up the changes
kubectl delete pod <pod id>
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