Deploying a ROSA Classic cluster with Terraform

This guide will walk you through deploying a ROSA cluster using Terraform. This is a great way to get started with ROSA and to automate the deployment of your clusters.

Pre-requisites

• You need the git binary installed on your machine. You can download it from the git website .

• You need to have the terraform binary installed on your machine. You can download it from the Terraform website .

• You need to have the jq binary installed on your machine. You can download it from the jq website .

• You need to have the oc binary installed on your machine. You can download it from the OpenShift website .

• You need to have the rosa binary installed on your machine. You can download it from the ROSA website .

• You need to have an OpenShift Cluster Manager (OCM) account. You can sign up for an account on the OCM website .

• Get an OCM API token. You can do this by logging into OCM and going to the API tokens page .

• You need to log in to OCM and create a refresh token. You can do this by running the following command:

  rosa login
  

  Use the OCM API token you created in the previous step to log in.

ROSA Classic Cluster

1. Clone down the terraform repository

   git clone --depth=1 https://github.com/rh-mobb/terraform-rosa.git
   cd terraform-rosa
   

2. Save some environment variables

   Mac

   export TF_VAR_token="$(jq -r .refresh_token ~/Library/Application\ Support/ocm/ocm.json)"
   

   Linux

   export TF_VAR_token="$(jq -r .refresh_token ~/.config/ocm/ocm.json)"
   

   Note: You may want to customize some of these settings to match your needs. see the variables.tf file for options.

   export TF_VAR_cluster_name="$(whoami)"
   export TF_VAR_admin_password='Passw0rd12345!'
   export TF_VAR_developer_password=''
   export TF_VAR_private=false
   export TF_VAR_ocp_version=4.15.11
   export TF_VAR_hosted_control_plane=false
   export TF_VAR_multi_az=false
   

3. Create a Plan and Apply it

   terraform init
   
   terraform plan -out tf.plan
   
   terraform apply tf.plan
   

   If everything goes to plan, after about 45 minutes you should have a cluster available to use.

   Apply complete! Resources: 0 added, 0 changed, 0 destroyed.
   
   Outputs:
   
   cluster_api_url = "https://api.pczarkow-virt.nga3.p3.openshiftapps.com:443"
   oidc_config_id = "2b607a5ufsjc51g41ul07k5vj12v7ivb"
   oidc_endpoint_url = "2b607a5ufsjc51g41ul07k5vj12v7ivb"
   private_subnet_azs = tolist([
     "us-east-1a",
   ])
   private_subnet_ids = tolist([
     "subnet-09adee841dd979fdb",
   ])
   public_subnet_azs = tolist([
     "us-east-1a",
   ])
   public_subnet_ids = tolist([
     "subnet-0dca7ed3cddf65d87",
   ])
   vpc_id = "vpc-0df19c93b93721ada"
   

4. Log into OpenShift

   oc login $(terraform output -raw cluster_api_url) \
           --username admin --password $TF_VAR_admin_password