Deploy OpenShift Cluster in AWS

25 minutes  

Deploy an OpenShift Cluster

We’ll use the ROSA CLI to deploy an OpenShift Cluster.

First, we’ll need to set a few environment variables:

Note: be sure to fill in the Subnet IDs and OIDC ID before running the EXPORT commands

export CLUSTER_NAME=rosa-test
export AWS_REGION=us-east-2
export AWS_INSTANCE_TYPE=g5.4xlarge
export SUBNET_IDS=<comma separated list of subnet IDs from earlier rosa create network command>
export OIDC_ID=<the oidc-provider id returned from the rosa create oidc-config command> 
export OPERATOR_ROLES_PREFIX=rosa-test-a6x9

Create operator roles for the OIDC configuration using the following command:

Note: just accept the default values when prompted.

rosa create operator-roles --hosted-cp --prefix $OPERATOR_ROLES_PREFIX --oidc-config-id $OIDC_ID

Then we can create the cluster as follows:

rosa create cluster \
    --cluster-name $CLUSTER_NAME \
    --mode auto \
    --hosted-cp \
    --sts \
    --create-admin-user \
    --operator-roles-prefix $OPERATOR_ROLES_PREFIX \
    --oidc-config-id $OIDC_ID \
    --subnet-ids $SUBNET_IDS \
    --compute-machine-type $AWS_INSTANCE_TYPE \
    --replicas 2 \
    --region $AWS_REGION \
    --tags "splunkit_environment_type:non-prd,splunkit_data_classification:private"

Note that we’ve specified the g5.4xlarge instance type, which includes NVIDIA GPUs that we’ll be using later in the workshop. This instance type is relatively expensive, about $1.64 per hour at the time of writing, and we’ve requested 2 replicas, so be mindful of how long your cluster is running for, as costs will accumulate quickly.

To determine when your cluster is Ready, run:

rosa describe cluster -c $CLUSTER_NAME

To watch your cluster installation logs, run:

rosa logs install -c $CLUSTER_NAME --watch

Connect to the OpenShift Cluster

Use the command below to connect the oc CLI to your OpenShift cluster:

Note: Run the rosa describe cluster -c $CLUSTER_NAME command and substitute the resulting API Server URL into the command below before running it. For example, the server name might be something like https://api.rosa-test.aaa.bb.openshiftapps.com:443.

 oc login <API Server URL> -u cluster-admin

Once connected to your cluster, confirm that the nodes are up and running:

oc get nodes

NAME                                       STATUS   ROLES    AGE   VERSION
ip-10-0-1-184.us-east-2.compute.internal   Ready    worker   14m   v1.31.11
ip-10-0-1-50.us-east-2.compute.internal    Ready    worker   20m   v1.31.11