Chapter 6. Backing OpenShift Container Platform applications with OpenShift Container Storage

Procedure

1. In the OpenShift Web Console, perform one of the following:

   • Click Workloads Deployments.

     In the Deployments page, you can do one of the following:

     • Select any existing deployment and click Add Storage option from the Action menu (⋮).

     • Create a new deployment and then add storage.

       1. Click Create Deployment to create a new deployment.
       2. Edit the YAML based on your requirement to create a deployment.
       3. Click Create.
       4. Select Add Storage from the Actions drop down menu on the top right of the page.

   • Click Workloads Deployment Configs.

     In the Deployment Configs page, you can do one of the following:

     • Select any existing deployment and click Add Storage option from the Action menu (⋮).

     • Create a new deployment and then add storage.

       1. Click Create Deployment Config to create a new deployment.
       2. Edit the YAML based on your requirement to create a deployment.
       3. Click Create.
       4. Select Add Storage from the Actions drop down menu on the top right of the page.

2. In the Add Storage page, you can choose one of the following options:

   • Click the Use existing claim option and select a suitable PVC from the drop down list.

   • Click the Create new claim option.

     1. Select the appropriate CephFS or RBD storage class from the Storage Class drop down list.
     2. Provide a name for the Persistent Volume Claim.

     3. Select ReadWriteOnce (RWO) or ReadWriteMany (RWX) access mode.

        Note

        ReadOnlyMany (ROX) is deactivated as it is not supported.

     4. Select the size of the desired storage capacity.

        Note

        You can expand the block PVs but cannot reduce the storage capacity after the creation of Persistent Volume Claim.

3. Specify the mount path and subpath (if required) for the mount path volume inside the container.
4. Click Save.

Verification steps

1. Depending on your configuration, perform one of the following:

   • Click Workloads Deployments.
   • Click Workloads Deployment Configs.
2. Set the Project as required.
3. Click the deployment for which you added storage to display the deployment details.
4. Scroll down to Volumes and verify that your deployment has a Type that matches the Persistent Volume Claim that you assigned.
5. Click the Persistent Volume Claim name and verify the storage class name in the Persistent Volume Claim Overview page.