Lab
A Cloud Guru

Using Container Volume Storage in Kubernetes

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.

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Path Info

Level

Intermediate

Duration

30m

Published

Feb 25, 2022

Challenge

Add an Ephemeral Volume

The application is managed by the app-processing Deployment in the default Namespace.

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.
Challenge

Add a Persistent Volume

The application is managed by the app-processing Deployment in the default Namespace. Use a PersistentVolume to mount data from the k8s host to the application's container. The data is located at /etc/voldata on 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 to ReadWriteOnce, and set the storage class to host.

For the PersistentVolumeClaim, set the storage request to 100Mi. Mount it to /data in 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 Key data in the container log!

Author

A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

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