Chapter 1. Deploying using local storage devices

Procedure

1. Navigate in the left pane of the OpenShift Web Console to click Operators → OperatorHub .

   Figure 1.1. List of operators in the Operator Hub

   

2. Click on OpenShift Container Storage.

   You can use the Filter by keyword text box or the filter list to search for OpenShift Container Storage from the list of operators.

3. Click Install on the OpenShift Container Storage operator page.

   Figure 1.2. Install Operator page

   

   After Clicking on Install button, following page will appear.

   

4. On the Install Operator page, the following options are selected by default:

   1. Update Channel as stable-4.7
   2. Installation Mode as A specific namespace on the cluster
   3. Installed Namespace as Operator recommended namespace openshift-storage. If Namespace openshift-storage does not exist, it will be created during the operator installation.
   4. Select Approval Strategy as Automatic or Manual.

   5. Click Install.

      If you selected Automatic updates, then the Operator Lifecycle Manager (OLM) automatically upgrades the running instance of your Operator without human intervention. If you selected Manual updates, then the OLM creates an update request. As a cluster administrator, you must then manually approve that update request to have the Operator updated to the new version.

Verification steps

1. Verify that OpenShift Container Storage Operator shows a green tick indicating successful installation.

2. Click View Installed Operators in namespace openshift-storage link to verify that OpenShift Container Storage Operator shows the Status as Succeeded on the Installed Operators dashboard.

   Figure 1.3. Installed Operators dashboard

   

Procedure

1. Click Operators → OperatorHub in the left pane of the OpenShift Web Console.
2. Search for Local Storage Operator from the list of operators and click on it.

3. Click Install.

   Figure 1.4. Install Operator page

   

   After Clicking on Install button, following page will appear.

   

4. Set the following options on the Install Operator page:

   1. Update Channel as stable-4.7
   2. Installation Mode as A specific namespace on the cluster
   3. Installed Namespace as Operator recommended namespace openshift-local-storage.
   4. Approval Strategy as Automatic

5. Click Install.

   Figure 1.5. Installed Operators dashboard

   

Procedure

1. Log into the OpenShift Web Console.

2. In openshift-local-storage namespace Click Operators → Installed Operators from the left pane of the OpenShift Web Console to view the installed operators.

   Figure 1.6. Local Storage Operator page

   
   1. Click the Local Storage installed operator.

   2. On the Operator Details page, click the Local Volume Set link.

      Figure 1.7. Local Volume Set tab

      

3. Click Create Local Volume Set.

   
   1. Enter the Volume Set name. By default, Storage Class name appears for the Volume Set name.

   2. To discover available disks, you can choose one of the following:

      • All nodes to discover disks in all the nodes.

      • Select nodes to choose a subset of nodes from a list of nodes

        To find specific worker nodes in the cluster, you can filter nodes on the basis of Name or Label. Name allows you to search by name of the node and Label allows you to search by selecting the predefined label.

   3. Select the Disk type. The following options are available:

      All	Selects all types of disks present on the nodes. By default, this option is selected.
      SSD/NVME	Selects only SSD NVME type of disks.
      HDD	Selects only HDD type of disks.

   4. In the Advanced section, you can set the following:

      Volume Mode	Block is selected by default.
      Disk Size	Minimum and maximum avaialable size of the device that needs to be included. Note Choose the minimum disk size equivalent to the size of additional attached disk.
      Max Disk Limit	This indicates the maximum number of PVs that can be created on a node. If this field is left empty, then PVs are created for all the available disks on the matching nodes.

   5. Click Create.

      The Create button is enabled only after you select a minimum of three nodes. Local Volume Set is created with one volume per worker node with the available disks.

4. In openshift-storage namespace Click Operators → Installed Operators from the left pane of the OpenShift Web Console to view the installed operators.

   Figure 1.8. OpenShift Container Storage Operator page

   
   1. Click the OpenShift Container Storage installed operator.

   2. On the Operator Details page, click the Storage Cluster link.

      Figure 1.9. Storage Cluster tab

      

5. Click Create Storage Cluster.

   

6. Select Internal-Attached devices for the Select Mode.

   
   1. Select the required storage class.
   2. The nodes corresponding to the storage class are displayed based on the storage class that you selected from the drop down.
   3. Click Next.

7. Again Click Next and then you will be redirected to Review and Create page.

   1. Review the configurations details. To modify any configuration settings, click Back to go back to the previous configuration page.

      
8. Click Create.