Chapter 1. Creating a ROSA cluster with STS using the default options

Procedure

1. Create an OpenShift Cluster Manager role and link it to your Red Hat organization:

   Note

   To enable automatic deployment of the cluster-specific Operator roles and the OpenID Connect (OIDC) provider using the OpenShift Cluster Manager Hybrid Cloud Console, you must apply the administrative privileges to the role by choosing the Admin OCM role command in the Accounts and roles step of creating a ROSA cluster. For more information about the basic and administrative privileges for the OpenShift Cluster Manager role, see Understanding AWS account association.

   Note

   If you choose the Basic OCM role command in the Accounts and roles step of creating a ROSA cluster in the OpenShift Cluster Manager Hybrid Cloud Console, you must deploy a ROSA cluster using manual mode. You will be prompted to configure the cluster-specific Operator roles and the OpenID Connect (OIDC) provider in a later step.

   $ rosa create ocm-role

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   Select the default values at the prompts to quickly create and link the role.

2. Create a user role and link it to your Red Hat user account:

   $ rosa create user-role

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   Select the default values at the prompts to quickly create and link the role.

   Note

   The Red Hat user account must exist in the Red Hat organization that is linked to your OpenShift Cluster Manager role.

Procedure

1. Check your AWS account for existing roles and policies:

   $ rosa list account-roles

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2. If they do not exist in your AWS account, create the required account-wide AWS IAM STS roles and policies:

   $ rosa create account-roles

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   Select the default values at the prompts to quickly create the roles and policies.

Procedure

1. To create your OIDC configuration alongside the AWS resources, run the following command:

   $ rosa create oidc-config --mode=auto --yes

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   This command returns the following information.

   Example output

   ? Would you like to create a Managed (Red Hat hosted) OIDC Configuration Yes
   I: Setting up managed OIDC configuration
   I: To create Operator Roles for this OIDC Configuration, run the following command and remember to replace <user-defined> with a prefix of your choice:
   	rosa create operator-roles --prefix <user-defined> --oidc-config-id 13cdr6b
   If you are going to create a Hosted Control Plane cluster please include '--hosted-cp'
   I: Creating OIDC provider using 'arn:aws:iam::4540112244:user/userName'
   ? Create the OIDC provider? Yes
   I: Created OIDC provider with ARN 'arn:aws:iam::4540112244:oidc-provider/dvbwgdztaeq9o.cloudfront.net/13cdr6b'

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   When creating your cluster, you must supply the OIDC config ID. The CLI output provides this value for --mode auto, otherwise you must determine these values based on aws CLI output for --mode manual.

2. Optional: you can save the OIDC configuration ID as a variable to use later. Run the following command to save the variable:

   $ export OIDC_ID=<oidc_config_id>

   1

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   1

   In the example output above, the OIDC configuration ID is 13cdr6b.

   • View the value of the variable by running the following command:

     $ echo $OIDC_ID

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     Example output

     13cdr6b

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Procedure

1. Navigate to OpenShift Cluster Manager and select Create cluster.
2. On the Create an OpenShift cluster page, select Create cluster in the Red Hat OpenShift Service on AWS classic architecture (ROSA) row.

3. Verify that your AWS account ID is listed in the Associated AWS accounts drop-down menu and that the installer, support, worker, and control plane account role Amazon Resource Names (ARNs) are listed on the Accounts and roles page.

   Note

   If your AWS account ID is not listed, check that you have successfully associated your AWS account with your Red Hat organization. If your account role ARNs are not listed, check that the required account-wide STS roles exist in your AWS account.

4. Click Next.

5. On the Cluster details page, provide a name for your cluster in the Cluster name field. Leave the default values in the remaining fields and click Next.

   Note

   Cluster creation generates a domain prefix as a subdomain for your provisioned cluster on openshiftapps.com. If the cluster name is less than or equal to 15 characters, that name is used for the domain prefix. If the cluster name is longer than 15 characters, the domain prefix is randomly generated as a 15-character string. To customize the subdomain, select the Create custom domain prefix checkbox, and enter your domain prefix name in the Domain prefix field.

6. To deploy a cluster quickly, leave the default options in the Cluster settings, Networking, Cluster roles and policies, and Cluster updates pages and click Next on each page.
7. On the Review your ROSA cluster page, review the summary of your selections and click Create cluster to start the installation.

8. Optional: On the Overview tab, you can enable the delete protection feature by selecting Enable, which is located directly under Delete Protection: Disabled. This will prevent your cluster from being deleted. To disable delete protection, select Disable. By default, clusters are created with the delete protection feature disabled.

   Verification

   • You can check the progress of the installation in the Overview page for your cluster. You can view the installation logs on the same page. Your cluster is ready when the Status in the Details section of the page is listed as Ready.

     Note

     If the installation fails or the cluster State does not change to Ready after about 40 minutes, check the installation troubleshooting documentation for details. For more information, see Troubleshooting installations. For steps to contact Red Hat Support for assistance, see Getting support for Red Hat OpenShift Service on AWS.