How to configure load balancer in Azure Kubernetes Service ?

 

To configure a load balancer in Azure Kubernetes Service (AKS), you can follow these steps:

1. Create an AKS cluster: Start by creating an AKS cluster using the Azure portal, Azure CLI, or Azure PowerShell. Make sure to specify the desired configuration, such as the number of nodes, node size, and networking options.
2. Deploy your application: Once the AKS cluster is created, deploy your application or services to the cluster. You can use Kubernetes manifests (YAML files) to define your application deployment, services, and any necessary ingress resources.
3. Create a Kubernetes service: To expose your application to the external world and load balance the traffic, you need to create a Kubernetes service. A service defines a stable network endpoint that receives traffic and distributes it to the appropriate pods.

Here's an example of a Kubernetes service manifest that exposes your application on a specific port:

apiVersion: v1

kind: Service

metadata:

  name: my-app-service

spec:

  type: LoadBalancer

  ports:

    - port: 80

      targetPort: 8080

  selector:

    app: my-app

In this example, the service is defined as type LoadBalancer, and it exposes port 80, which gets mapped to the target port 8080 on the pods labeled with app: my-app.

4. Apply the service manifest: Apply the service manifest using the kubectl apply command to create the service in the AKS cluster. The Kubernetes service controller will automatically provision an Azure Load Balancer and configure the necessary routing rules.

kubectl apply -f service.yaml

5. Verify the load balancer: Once the service is created, you can check the status and details of the load balancer using the Azure portal, Azure CLI, or Azure PowerShell. Look for the provisioned Load Balancer resource associated with your AKS cluster.
6. Access your application: After the load balancer is provisioned and configured, it will route the incoming traffic to the pods running your application. You can access your application using the public IP address or DNS name associated with the load balancer.

That's it! You have now configured a load balancer for your application in Azure Kubernetes Service. The load balancer will evenly distribute incoming traffic to the pods, ensuring high availability and scalability for your application.