IBM Cloud: Launch VPC Gen2 Openshift Cluster Using CLI

create_openshift_cluster_ibm.sh

#!/bin/bash

echo -e "Launch Openshift Cluster in IBM Cloud using CLI \n\n"

# Installing the IBM Cloud CLI
curl -fsSL https://clis.cloud.ibm.com/install/linux | sh
ibmcloud update
ibmcloud -v
echo -e "-------------------------------------------------------------\n"

# Install the IBM Cloud plug-in for IBM Cloud Kubernetes Service
echo 'Installing plug-in for Kubernetes Service, Container Registry, Kubernetes Service observability, and VPC infrastructure service'
ibmcloud plugin install container-service -N
ibmcloud plugin install container-registry -N
ibmcloud plugin install observe-service -N
ibmcloud plugin install vpc-infrastructure
ibmcloud plugin update
ibmcloud plugin list
echo -e '-------------------------------------------------------------\n'

# Log in to the IBM Cloud CLI. Enter your IBM Cloud credentials when prompted.
echo 'Login to IBM Cloud CLI'
ibmcloud login --sso
echo -e '-------------------------------------------------------------\n'


# List all resource groups under the currently targeted account:
ibmcloud resource groups

# Set the target resource group
read -p "From the above output, enter the target resource group name: " resource_group
ibmcloud target -g $resource_group
echo -e '-------------------------------------------------------------\n'

## Using the CLI to create VPC resources
echo 'Selecting the target generation 2 virtual server instances for VPC'
ibmcloud is target --gen 2
echo -e '-------------------------------------------------------------\n'

## Create a VPC
echo 'Creating VPC...'
read -p "Enter name of VPC to be created: " vpc_name
vpc=$(ibmcloud is vpc-create "$vpc_name" --output json | jq -r .id)
echo -e '-------------------------------------------------------------\n'

## Create a subnet
echo 'Creating subnet...'
read -p 'Enter name of subnet to be created: ' subnet_name

# List the address prefixes for each zone in your VPC
ibmcloud is vpc-address-prefixes $vpc
echo -e '\nFrom the above command output'
read -p 'Enter the selected zone: ' zone
read -p "Enter the CIDR block of the address prefix for your target $zone region: " cidr
echo

subnet=$(ibmcloud is subnet-create $subnet_name $vpc $zone --ipv4-cidr-block $cidr --output json | jq -r .id)
echo -e '-------------------------------------------------------------\n'

## Attach a public gateway to subnet
# Create a public gateway
echo "Creating a public gateway..."
read -p "Enter name of gateway to be created: " gateway_name
gateway=$(ibmcloud is public-gateway-create $gateway_name $vpc $zone --output json | jq -r .id)

echo -e '\nAttaching the public gateway to your subnet'
ibmcloud is subnet-update $subnet --pgw $gateway
echo -e '-------------------------------------------------------------\n'


## Create a COS resource - to backup the internal registry of your cluster
echo 'Creating COS resource...'
read -p "Enter name of Cloud Object Storage(COS) instance to be created: " cos_name
ibmcloud resource service-instance-create $cos_name cloud-object-storage standard global

read -p "From the output that's returned, enter the cos crn(ID): " cos_crn
echo -e '-------------------------------------------------------------\n'

## Create Openshift Cluster
echo "Creating openshift cluster..."
ibmcloud ks flavors --zone "$zone"
echo -e "\nRecommended, flavor with 4 cores and 16GB memory, i.e. bx2.4x16"
read -p "Select the flavor for your cluster: " flavor
read -p "Enter name of the cluster to be created: " cluster_name
read -p "Provide the openshift version: " openshift_version
read -p "Enter the number of worker nodes (for each zone): " worker

ibmcloud oc cluster create vpc-gen2 --name $cluster_name --version "$openshift_version"_openshift --zone $zone --vpc-id $vpc --subnet-id $subnet --cos-instance $cos_crn --flavor $flavor --workers $worker

echo -e "\n\nCluster successfully created!"
echo "Check the status of your cluster at https://cloud.ibm.com/kubernetes/clusters"

Script to launch openshift cluster in IBM
IBM Cloud: Launch VPC Gen2 Openshift Cluster