Kubernetes offers a variety of tools to help you manage external storage for your containers. In this lab, you will have a chance to work with Kubernetes storage volumes, in the form of both ephemeral volumes and Persistent Volumes.
Learning Objectives
Successfully complete this lab by achieving the following learning objectives:
- Add an Ephemeral Volume
The application is managed by the
app-processingDeployment in thedefaultNamespace.The application needs to write some temporary data, but it cannot write directly to the container file system because it is set as read-only. Use a volume to create a temporary storage location at
/tempdata.- Add a Persistent Volume
The application is managed by the
app-processingDeployment in thedefaultNamespace. Use a PersistentVolume to mount data from the k8s host to the application’s container. The data is located at/etc/voldataon the host. Set up the PersistentVolume to access this data using directory mode.For the PersistentVolume, set a capacity of
1Gi. Set the access mode toReadWriteOnce, and set the storage class tohost.For the PersistentVolumeClaim, set the storage request to
100Mi. Mount it to/datain the container.Note: The application is set up to read data from the PersistentVolumeClaim’s mounted location, then write it to the ephemeral volume location, and read it back from the ephemeral volume to the container log. This means that if everything is set up properly, you see the
Hive Keydata in the container log!
