Challenge, Medium,  on  Kubernetes

Create an OpenEBS StorageClass and Set It as the Default

Scenario

OpenEBS is installed on the cluster. You need to create a custom StorageClass that uses OpenEBS local provisioning and make it the default StorageClass for the cluster.

The existing default StorageClass local-path must no longer be marked as default — a cluster should have only one default StorageClass.

The manifest file must be saved at:

/home/laborant/openebs-local-sc.yaml

Task

  1. Create a StorageClass named openebs-local with the following configuration and save the manifest at /home/laborant/openebs-local-sc.yaml:
    FieldValue
    provisioneropenebs.io/local
    volumeBindingModeWaitForFirstConsumer
    reclaimPolicyDelete
    allowVolumeExpansiontrue
  2. After applying the manifest, make openebs-local the new default StorageClass and remove the default annotation from local-path.
Hint 1

Use kubectl annotate storageclass to set or remove the storageclass.kubernetes.io/is-default-class annotation.

Alternatively, use kubectl patch storageclass to add or update the annotation via a merge patch, which is useful for automation or scripting.

To set as default use storageclass.kubernetes.io/is-default-class=true and to remove use storageclass.kubernetes.io/is-default-class-.

See the official docs:

Test Cases

How to Author Challenges on iximiuz Labs

Instead of providing a subpar online editing experience, iximiuz Labs offers a helper CLI tool called labctl, allowing you to use your favorite text editor (or a full-featured IDE) to write content from the comfort of your local machine.

Install labctl CLI

curl -sf https://labs.iximiuz.com/cli/install.sh | sh

This will download and install the latest version of the labctl CLI. You only need to do this once per workstation.

Authorize labctl

labctl auth login

This will open a browser window asking you to authorize labctl to access your account. You need to do it after a fresh install of labctl and repeat it whenever the auth session expires.

Pull challenge content

labctl content pull challenge create-an-openebs-storageclass-fc74d582

This will create a local copy of the challenge content in a directory named create-an-openebs-storageclass-fc74d582. You only need to do this once per challenge.

Stream your changes

labctl content push -fw challenge create-an-openebs-storageclass-fc74d582

Run this command in a separate terminal to continuously upload your changes to the server while editing the challenge in your favorite text editor or IDE.

You can also use labctl to create, list, and delete your content. Learn more about the available commands: labctl content --help

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