Azure Redhat Openshift creation script

aro.sh

#!/bin/bash
# shellcheck shell=bash
# AUTHOR: github.com/nataz77
# USAGE: ./aro.sh 

function providers {
    az provider register -n Microsoft.RedHatOpenShift --wait
    az provider register -n Microsoft.Compute --wait
    az provider register -n Microsoft.Storage --wait
}

function rg {
    az group create --name "$RESOURCEGROUP" --location "$LOCATION"
}

function vnet {
    az network vnet create --resource-group "$RESOURCEGROUP" --name aro-vnet --address-prefixes 10.0.0.0/22
}

function subnet {
    az network vnet subnet create --resource-group "$RESOURCEGROUP" \
    --vnet-name aro-vnet \
    --name master-subnet \
    --address-prefixes 10.0.0.0/23 \
    --service-endpoints Microsoft.ContainerRegistry

    az network vnet subnet create \
    --resource-group "$RESOURCEGROUP" \
    --vnet-name aro-vnet \
    --name worker-subnet \
    --address-prefixes 10.0.2.0/23 \
    --service-endpoints Microsoft.ContainerRegistry

    az network vnet subnet update \
    --name master-subnet \
    --resource-group "$RESOURCEGROUP" \
    --vnet-name aro-vnet \
    --disable-private-link-service-network-policies true
}

function aro {
    echo 'Deploying OpenShift. This is gonna take a while...'
    az aro create --resource-group "$RESOURCEGROUP" \
    --name "$CLUSTER" \
    --vnet aro-vnet \
    --master-subnet master-subnet \
    --worker-subnet worker-subnet
    echo 'Deployment complete'
}

function credentials {
    echo 'Getting cluster credentials'
    az aro list-credentials \
    --name "$CLUSTER" \
    --resource-group "$RESOURCEGROUP"
    echo 'Done!'
}


function main {
    providers
    rg
    vnet
    subnet
    aro
    credentials
}

function login {
    if ! az login;
    then
        echo 'Unable to login. Please see the az command output above for more details.'
    else
        main
    fi
}

LOCATION=westeurope
RESOURCEGROUP=aro
CLUSTER=inpsaro

read -p "Did you login into the az cli? (y/n)" -n 1 -r
echo
if [[ $REPLY =~ ^[Yy]$ ]]
then
    main
else    
    login
fi