Chapter 6. Scaling storage nodes

Procedure

1. Navigate to the OpenShift Web Console.
2. Click on Operators on the left navigation bar.
3. Select Installed Operators.

4. In the window, click OpenShift Container Storage Operator:

   

5. In the top navigation bar, scroll right and click Storage Cluster tab.

   
6. The visible list should have only one item. Click (⋮) on the far right to extend the options menu.

7. Select Add Capacity from the options menu.

   

   From this dialog box, you can set the requested additional capacity and the storage class. Add capacity will show the capacity selected at the time of installation and will allow to add the capacity only in this increment. Set the storage class to standard if you are using the default storage class that uses HDD. However, if you created a storage class to use SSD based disks for better performance, you need to select that storage class.

   Note

   The effectively provisioned capacity will be three times as much as what you see in the Raw Capacity field because OpenShift Container Storage uses a replica count of 3.

8. Once you are done with your setting, click Add. You might need to wait a couple of minutes for the storage cluster to reach Ready state.

Verification steps

1. Navigate to Overview Persistent Storage tab, then check the Capacity breakdown card.

   
2. Note that the capacity increases based on your selections.