Domain 6: Storage and Volumes (10% of exam)
- Identify the correct graph drivers to use with various operating systems
- Describe and demonstrate how to configure devicemapper
- Compare and contrast object and block storage and when they should be used
- Describe how an application is composed of layers and where these layers reside on the filesystem
- Describe how volumes are used with Docker for persistent storage
- Identify the steps you would take to clean up unused images on a filesystem, also on DTR (image prune, system prune and from DTR)
- Demonstrate how storage can be used across cluster nodes, ex.
- (Since Study Guide 1.5) Describe how to provision persistent storage to a Kubernetes pod using persistentVolumes
- (Since Study Guide 1.5) Describe the relationship between container storage interface drivers, storageClass, persistentVolumeClaim and volume objects in Kubernetes