Installing a cluster quickly on Alibaba Cloud

If you do not have an existing SSH key pair on your local machine to use for authentication onto your cluster nodes, create one. For example, on a computer that uses a Linux operating system, run the following command:

$ ssh-keygen -t ed25519 -N '' -f <path>/<file_name> (1)

View the public SSH key:

$ cat <path>/<file_name>.pub

$ cat ~/.ssh/id_ed25519.pub

Add the SSH private key identity to the SSH agent for your local user, if it has not already been added. SSH agent management of the key is required for password-less SSH authentication onto your cluster nodes, or if you want to use the ./openshift-install gather command.

Add your SSH private key to the ssh-agent:

$ ssh-add <path>/<file_name> (1)

Identity added: /home/<you>/<path>/<file_name> (<computer_name>)

Access the Infrastructure Provider page on the OpenShift Cluster Manager site. If you have a Red Hat account, log in with your credentials. If you do not, create an account.

Select your infrastructure provider.

Navigate to the page for your installation type, download the installation program that corresponds with your host operating system and architecture, and place the file in the directory where you will store the installation configuration files.

Extract the installation program. For example, on a computer that uses a Linux operating system, run the following command:

$ tar -xvf openshift-install-linux.tar.gz

Download your installation pull secret from the Red Hat OpenShift Cluster Manager. This pull secret allows you to authenticate with the services that are provided by the included authorities, including Quay.io, which serves the container images for OpenShift Container Platform components.

Create the install-config.yaml file.

Installing the cluster into Alibaba Cloud requires that the Cloud Credential Operator (CCO) operate in manual mode. Modify the install-config.yaml file to set the credentialsMode parameter to Manual:

apiVersion: v1
baseDomain: cluster1.example.com
credentialsMode: Manual (1)
compute:
- architecture: amd64
  hyperthreading: Enabled
 ...

Back up the install-config.yaml file so that you can use it to install multiple clusters.

Generate the manifests by running the following command from the directory that contains the installation program:

$ openshift-install create manifests --dir <installation_directory>

Set the $RELEASE_IMAGE variable by running the following command:

$ RELEASE_IMAGE=$(./openshift-install version | awk '/release image/ {print $3}')

Extract the list of CredentialsRequest objects from the OpenShift Container Platform release image by running the following command:

$ oc adm release extract \
--credentials-requests \
--cloud=alibabacloud \
--to=<path_to_directory_with_list_of_credentials_requests>/credrequests \ (1)
$RELEASE_IMAGE

If your cluster uses cluster capabilities to disable one or more optional components, delete the CredentialsRequest custom resources for any disabled components.

0000_30_machine-api-operator_00_credentials-request.yaml (1)
0000_50_cluster-image-registry-operator_01-registry-credentials-request-alibaba.yaml (2)
0000_50_cluster-ingress-operator_00-ingress-credentials-request.yaml (3)
0000_50_cluster-storage-operator_03_credentials_request_alibaba.yaml (4)

Use the ccoctl tool to process all CredentialsRequest objects in the credrequests directory:

Copy the generated credential files to the target manifests directory:

$ cp ./<path_to_ccoctl_output_dir>/manifests/*credentials.yaml ./<path_to_installation>dir>/manifests/

Change to the directory that contains the installation program and initialize the cluster deployment:

$ ./openshift-install create cluster --dir <installation_directory> \ (1)
    --log-level=info (2)

...
INFO Install complete!
INFO To access the cluster as the system:admin user when using 'oc', run 'export KUBECONFIG=/home/myuser/install_dir/auth/kubeconfig'
INFO Access the OpenShift web-console here: https://console-openshift-console.apps.mycluster.example.com
INFO Login to the console with user: "kubeadmin", and password: "4vYBz-Ee6gm-ymBZj-Wt5AL"
INFO Time elapsed: 36m22s

Navigate to the OpenShift Container Platform downloads page on the Red Hat Customer Portal.

Select the appropriate version in the Version drop-down menu.

Click Download Now next to the OpenShift v4.10 Linux Client entry and save the file.

Unpack the archive:

$ tar xvf <file>

Place the oc binary in a directory that is on your PATH.

$ echo $PATH

Navigate to the OpenShift Container Platform downloads page on the Red Hat Customer Portal.

Select the appropriate version in the Version drop-down menu.

Click Download Now next to the OpenShift v4.10 Windows Client entry and save the file.

Unzip the archive with a ZIP program.

Move the oc binary to a directory that is on your PATH.

C:\> path

Navigate to the OpenShift Container Platform downloads page on the Red Hat Customer Portal.

Select the appropriate version in the Version drop-down menu.

Click Download Now next to the OpenShift v4.10 MacOSX Client entry and save the file.

Unpack and unzip the archive.

Move the oc binary to a directory on your PATH.

$ echo $PATH

Export the kubeadmin credentials:

$ export KUBECONFIG=<installation_directory>/auth/kubeconfig (1)

Verify you can run oc commands successfully using the exported configuration:

$ oc whoami

system:admin

Obtain the password for the kubeadmin user from the kubeadmin-password file on the installation host:

$ cat <installation_directory>/auth/kubeadmin-password

List the OpenShift Container Platform web console route:

$ oc get routes -n openshift-console | grep 'console-openshift'

console     console-openshift-console.apps.<cluster_name>.<base_domain>            console     https   reencrypt/Redirect   None

Navigate to the route detailed in the output of the preceding command in a web browser and log in as the kubeadmin user.