ingress controller

• Ingress in kubernetes:
  • Ingress: This is all about your rules
  • IngressController: This is responsible for doing layer 7 lb. This is not available by default & we need to install an external ingress controller.
• In Layer 7 LB, we can perform
  • Path based routing
  • Hostname based routing
    
• Azure AKS Ingress Controllers
• Routing using nginx ingress controller
• Azure Application Gateway Ingress Controller
• Istio Gateway
• Refer Here for the manifests used in the class
• If you need to rewrite target Refer Here this example
• Azure Allows to automatically scale nodes
• KEDA Based Scaling

AWS Elastic Kubernetes Services (EKS)

• AWS EKS has following offerings
  • EKS
  • EKS Fargate
  • EKS Anywhere

Creating an eks cluster

• eksctl is the tool created to create/manage kubernetes clusters
• Ensure AWS CLI is configured
• Create an eksctl enabled yaml file

apiVersion: eksctl.io/v1alpha5
kind: ClusterConfig

metadata:
  name: learning-cluster
  region: ap-south-1

nodeGroups:
  - name: ng-1
    instanceType: t2.large
    desiredCapacity: 2

• To create cluster execute eksctl create cluster -f eks.yaml
• Once this is created the kubeconfig also will be applied
• To get kubeconfig

aws eks update-kubeconfig --region region-code --name my-cluster

• We have tried running aks store and it was working

AWS Specific features of k8s

• VPC-CNI: Pods are getting ip address from cidr ranges of vpc
• LoadBalancer: AWS Specific LoadBalancer annotations
• Identity in AWS EKS:
• Storage Classes: AWS by default gives gp2 storage class
• Creating storage classes in eks

AWS EKS – IAM

• How to handle user management in AWS EKS
• To be discussed next week