Chapter 5. Installing a cluster on Oracle Compute Cloud@Customer by using the Assisted Installer

Procedure

1. Log in to Assisted Installer web console with your credentials.
2. In the Red Hat OpenShift tile, select OpenShift.
3. In the Red Hat OpenShift Container Platform tile, select Create Cluster.
4. On the Cluster Type page, scroll to the end of the Cloud tab, and select Oracle Cloud Infrastructure (virtual machines).
5. On the Create an OpenShift Cluster page, select the Interactive tile.

6. On the Cluster Details page, complete the following fields:

   Field	Action required
   Cluster name	Specify the name of your OpenShift Container Platform cluster. This name is the same name you used to create the resource via the Terraform scripts. The name must be between 1-54 characters. It can use lowercase alphanumeric characters or hyphen (-), but must start and end with a lowercase letter or a number.
   Base domain	Specify the base domain of the cluster. This is the value used for the zone_dns variables in the Terraform scripts that run on Compute Cloud@Customer. Make a note of the value.
   OpenShift version	Select OpenShift 4.16.20. If it is not immediately visible, scroll to the end of the dropdown menu, select Show all available versions, and type the version in the search box.
   Integrate with external partner platforms	Select Oracle Cloud Infrastructure. After you specify this value, the Include custom manifests checkbox is selected by default and the Custom manifests page is added to the wizard.

7. Leave the default settings for the remaining fields, and click Next.
8. On the Operators page, click Next.

9. On the Host Discovery page, click Add hosts and complete the following steps:

   Note

   The minimal ISO image is the mandatory Provisioning type for the Oracle Cloud Infrastructure (OCI), and cannot be changed.

   1. In the SSH public key field, add the SSH public key by copying the output of the following command:

      $ cat ~/.ssh/id_rsa.put

      The SSH public key will be installed on all OpenShift Container Platform control plane and compute nodes.

   2. Click the Show proxy settings checkbox.

   3. Add the proxy variables from the /etc/environment file of the bastion server that you configured earlier:

      http_proxy=http://www-proxy.<your_domain>.com:80
      https_proxy=http://www-proxy.<your_domain>.com:80
      no_proxy=localhost,127.0.0.1,1,2,3,4,5,6,7,8,9,0,.<your_domain>.com
      #(ie.oracle.com,.oraclecorp.com)

   4. Click Generate Discovery ISO to generate the discovery ISO image file.
10. Click Download Discovery ISO to save the file to your local system. After you download the ISO file, you can rename it as required, for example discovery_image_<your_cluster_name>.iso.

Procedure

1. Convert the image from ISO to OCI.
2. Upload the OCI image to an OCI bucket, and generate a Pre-Authenticated Request (PAR) URL.
3. Import the OCI image to the Compute Cloud@Customer portal.
4. Copy the Oracle Cloud Identifier (OCID) of the image for use in the next procedure.

Procedure

1. From the Assisted Installer web console, select the cluster and navigate to the Host discovery page.
2. Delete the six hosts with a "Disconnected" status, by clicking the option button for each host and selecting Remove host. The status of the remaining hosts changes from "Insufficient" to "Ready". This process can take up to three minutes.
3. From the Role column, assign the Control plane role to the three nodes with a boot size of 1.10 TB. Assign the Worker role to the three nodes with boot size of 100 GB.
4. Rename any hosts with a name shorter than 63 characters, by clicking the option button for the host and selecting Change hostname. Otherwise the cluster installation will fail.
5. Click Next.
6. On the Storage page, click Next.

Procedure

1. In the Host inventory table, click the Some validations failed link for each host displaying this status.
2. Click Add NTP sources, and then add the IP address 169.254.169.254 for one of the nodes.
3. Wait for 2 - 3 minutes until all the Some validations failed indicators disappear.
4. Select Next.

Procedure

1. Navigate to the Custom manifests page.

2. Upload and save the oci-ccm.yml and oci-csi.yml manifest files:

   1. In the Folder field, select manifests.
   2. In the File name field, enter oci-ccm.yml.
   3. In the Content section, click Browse.
   4. Select the oci-ccm.yml file from the C3/custom_ manifest_C3/manifests folder.
   5. Click Add another manifest and repeat the previous substeps for the oci-csi.yml file.

3. Upload and save the machineconfig-ccm.yml and machineconfig-csi.yml manifest files:

   1. Click Add another manifest.
   2. In the Folder field, select openshift.
   3. In the File name field, enter machineconfig-ccm.yml.
   4. In the Content section, click Browse.
   5. Select the machineconfig-ccm.yml file from the C3/custom_ manifest_C3/openshift folder.
   6. Click Add another manifest and repeat the previous substeps for the machineconfig-csi.yml file.
4. Click Next to save the custom manifests.
5. From the Review and create page, click Install cluster to create your OpenShift Container Platform cluster. This process takes approximately thirty minutes.