DEV Community

karan singh
karan singh

Posted on

Minimalistic guide to Launch Azure Red Hat Openshift

What is ARO

Azure Red Hat OpenShift (ARO) is a fully-managed service of Red Hat OpenShift on Azure, Jointly engineered, managed, and supported by Microsoft and Red Hat.

Prerequisites

  • Azure account with portal access
  • Make sure your Azure User account has Microsoft.Authorization/roleAssignments/write permissions, such as User Access Administrator or Owner more info here

  • The default Azure resource quota for a new Azure subscription is 10 and does not meet this requirement. Increase quota from 10 to minimum 40 by following this guide

  • Launch Azure Cloud Shell from Azure Portal (top right).

  • Export some variables that we will often use in the rest of the tutorial.

export LOCATION=centralindia
export RESOURCEGROUP=ksingh-resource-group-india
export CLUSTER=azureopenstack
Enter fullscreen mode Exit fullscreen mode
  • Verify the quota
az vm list-usage -l $LOCATION \
--query "[?contains(name.value, 'standardDSv3Family')]" \
-o table
Enter fullscreen mode Exit fullscreen mode
  • Grab subscription ID from Azure Portal
az account set --subscription <SUBSCRIPTION ID>
Enter fullscreen mode Exit fullscreen mode

Launching ARO Cluster

# Register the resource providers

az provider register -n Microsoft.RedHatOpenShift --wait
az provider register -n Microsoft.Compute --wait
az provider register -n Microsoft.Storage --wait
az provider register -n Microsoft.Authorization --wait

# Create a resource group

az group create --name $RESOURCEGROUP --location $LOCATION

# Create a virtual network

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

# Create two subnets in aro-vnet network for OpenShift control plane (master) and worker nodes

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

# Update master node subnet network policy

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

# Finally, create ARO cluster with default configuration

az aro create --resource-group $RESOURCEGROUP --name $CLUSTER --vnet aro-vnet --master-subnet master-subnet --worker-subnet worker-subnet 
Enter fullscreen mode Exit fullscreen mode

Connect to ARO

  • (GUI) Grab OpenShift Console URL and credentials
az aro show --name $CLUSTER --resource-group $RESOURCEGROUP --query "consoleProfile.url" -o tsv
az aro list-credentials --name $CLUSTER --resource-group $RESOURCEGROUP
Enter fullscreen mode Exit fullscreen mode
  • (CLI) Install OpenShift Client oc
cd ~
wget https://mirror.openshift.com/pub/openshift-v4/clients/ocp/latest/openshift-client-linux.tar.gz

mkdir openshift
tar -zxvf openshift-client-linux.tar.gz -C openshift
echo 'export PATH=$PATH:~/openshift' >> ~/.bashrc && source ~/.bashrc

apiServer=$(az aro show -g $RESOURCEGROUP -n $CLUSTER --query apiserverProfile.url -o tsv)
oc login $apiServer -u kubeadmin -p <kubeadmin password>
Enter fullscreen mode Exit fullscreen mode

Summary

The experience of launching OpenShift cluster from Azure Cloud Shell aro is very simple and easy.
Hope this guide helps you, See You Next Time o/

Top comments (0)