Listen to this Post
In today’s cloud landscape, secure, scalable, and well-governed architectures are essential. The Hub & Spoke architecture in Azure provides an efficient way to structure your environment for optimal resource management, networking, and security. Below is a detailed breakdown of key Azure services categorized by functionality, along with practical implementations.
1. Management & Governance
- Management Group: Organizes subscriptions for hierarchical governance.
- Subscription: Logical unit for billing and resource isolation.
- Resource Group: Groups related resources (e.g., VMs, storage) for lifecycle management.
- Azure Policy: Enforces compliance (e.g., “All resources must be tagged”).
- Azure Monitor: Tracks performance metrics and logs.
- Log Analytics Workspace: Centralizes log queries for troubleshooting.
You Should Know:
<h1>Create a Resource Group via Azure CLI</h1>
az group create --name MyResourceGroup --location eastus
<h1>Assign an Azure Policy to enforce tagging</h1>
az policy assignment create --name 'tagging-policy' --policy '/providers/Microsoft.Authorization/policyDefinitions/xxxxx' --scope /subscriptions/{sub-id}
2. Networking (Hub & Spoke Core)
- Virtual Network (VNet): Foundation for Azure networking.
- Subnets: Segments VNets (e.g.,
web-subnet,db-subnet). - VNet Peering: Connects VNets privately.
- VPN Gateway: Securely links on-premises to Azure.
- Azure Load Balancer: Distributes traffic across VMs.
- Azure Bastion: Secure RDP/SSH access without public IPs.
You Should Know:
<h1>Create a VNet and subnet</h1> az network vnet create --name MyVNet --resource-group MyResourceGroup --address-prefix 10.0.0.0/16 --subnet-name MySubnet --subnet-prefix 10.0.1.0/24 <h1>Peer two VNets</h1> az network vnet peering create --name HubToSpoke --resource-group MyResourceGroup --vnet-name HubVNet --remote-vnet SpokeVNet --allow-vnet-access
3. Security & Identity
- Azure Firewall: Centralized network security.
- Network Security Groups (NSG): Filters traffic at subnet/VM level.
- Azure Key Vault: Stores secrets, keys, and certificates.
You Should Know:
<h1>Create an NSG rule to allow HTTP</h1> az network nsg rule create --name AllowHTTP --nsg-name MyNSG --priority 100 --resource-group MyResourceGroup --access Allow --protocol Tcp --direction Inbound --source-address-prefixes '<em>' --source-port-ranges '</em>' --destination-address-prefixes '*' --destination-port-ranges 80
4. Compute (Scalability & Performance)
- Virtual Machines (VMs): Deploy Windows/Linux workloads.
- VM Scale Sets (VMSS): Autoscale VMs based on demand.
You Should Know:
<h1>Deploy a Linux VM</h1> az vm create --resource-group MyResourceGroup --name MyVM --image UbuntuLTS --admin-username azureuser --generate-ssh-keys <h1>Create a VM Scale Set</h1> az vmss create --resource-group MyResourceGroup --name MyScaleSet --image UbuntuLTS --vm-sku Standard_DS2_v2 --instance-count 2 --upgrade-policy-mode Automatic
What Undercode Say
The Hub & Spoke model in Azure ensures scalability, security, and cost efficiency. Key takeaways:
– Use VNet peering for seamless inter-network communication.
– Enforce Azure Policy for governance.
– Leverage VM Scale Sets for auto-scaling.
– Secure access with Azure Bastion and Key Vault.
Expected Output:
Hub VNet: 10.0.0.0/16 Spoke VNet: 10.1.0.0/16 Peering established. VMSS scaled to 4 instances under load.
For further reading:
References:
Reported By: Sanjeev Kumar – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
