Idling_Applications.md

Level-0 question

Idling Applications

Create an application and set it up so that it can conserve resources when not used (5 mins)

- Create a deployment named nginx from bitnami/nginx image from dockerhub with 3 copies running on the cluster

- Create a service to access the deployment

- Create a route to access the application externally

- Setup the deployment to conserve resources when not used

Solution

- Create a deployment named nginx from bitnami/nginx image from dockerhub with 3 copies running on the cluster

oc run nginx --image=bitnami/nginx --restart=Always --replicas=3

- Create a service to access the deployment

oc expose dc nginx --port=8080 

- Create a route to access the application externally

oc expose service nginx

- Check if application is accessible

curl $(oc get route nginx -o jsonpath='{.spec.host}')

- Sertup service to idle

oc idle service nginx 

- Manually scale up services

oc scale --replicas=3 dc nginx 

- Automatic unidyling of services (doesn't seem to work)

curl $(oc get route nginx -o jsonpath='{.spec.host}')