Init containers are a great way to customize container startup. This lab will allow you to test your knowledge of init containers by using them to solve problems in an existing Kubernetes cluster.
Successfully complete this lab by achieving the following learning objectives:
- Create a Sample Pod That Uses an Init Container to Delay Startup
You will find a simple pod descriptor on the control plane server at
/home/cloud_user/pod.yml. Modify this pod descriptor to add an init container that will delay startup if
shipping-svccannot be located using
nslookup. Then, create the pod.
- Test Your Setup by Creating the Service and Verifying the Pod Starts Up
Apply the deployment descriptor for the
/home/cloud_user/shipping-svc.yml. Watch the status of your pod. If you set it up correctly, you should see the pod complete startup once the service becomes available.