Setup AWS Application Load Balancer Ingress in AWS EKS Cluster #Kubernetes #devops #aws #ingress
Github Repo : https://github.com/RohanRusta21/eks-alb-ingress-controller.git
Timestamp:
Understand Concept : 00:00
Practical Implementation : 15:50
Theory :
1. Understanding the Components
AWS EKS: Amazon Elastic Kubernetes Service is a managed Kubernetes service that makes it easy to run Kubernetes on AWS without needing to install, operate, and maintain your own Kubernetes control plane or nodes.
AWS ALB: Application Load Balancer is a type of load balancer offered by AWS that operates at the application layer (Layer 7) and is suitable for HTTP and HTTPS traffic.
Kubernetes Ingress: Ingress is a Kubernetes resource that manages external access to services in a cluster, typically HTTP. It provides load balancing, SSL termination, and name-based virtual hosting.
2. Prerequisites
An existing EKS cluster.
kubectl configured to interact with your EKS cluster.
AWS CLI configured with the necessary permissions.
IAM roles and policies set up for EKS and ALB.
3. Steps to Setup ALB Ingress Controller
a. Install the ALB Ingress Controller
Create an IAM Policy: The ALB Ingress Controller requires permissions to manage AWS resources. Create an IAM policy with the necessary permissions and attach it to a role that your EKS nodes will assume.
Deploy the ALB Ingress Controller: Use a Helm chart or a Kubernetes manifest to deploy the ALB Ingress Controller in your EKS cluster. This controller will manage the ALB and route traffic to the appropriate services based on Ingress resources.
b. Configure the Ingress Resource
Define Ingress Resources: Create Kubernetes Ingress resources that define how traffic should be routed to your services. These resources specify rules for routing based on hostnames and paths.
Annotations: Use annotations in your Ingress resources to configure ALB-specific settings, such as SSL certificates, listener rules, and health checks.
c. Verify the Setup
Check ALB Creation: Ensure that the ALB is created in your AWS account and is associated with the correct target groups and listeners.
Test Traffic Routing: Verify that traffic is being routed correctly to your services by accessing the ALB's DNS name and checking the responses.
4. Advanced Configurations
SSL/TLS Termination: Configure SSL certificates using AWS Certificate Manager (ACM) to enable HTTPS for your applications.
Custom Domains: Use Route 53 or another DNS service to map custom domains to your ALB.
Monitoring and Logging: Enable logging for your ALB and set up monitoring using CloudWatch to track the health and performance of your load balancer.
5. Benefits
Scalability: ALB automatically scales to handle increased traffic.
High Availability: ALB is designed to be highly available and fault-tolerant.
Integration: Seamless integration with other AWS services like ACM, WAF, and CloudWatch.
6. Best Practices
Security: Use security groups and network ACLs to control access to your ALB.
Cost Management: Monitor the cost associated with ALB and optimize your setup to avoid unnecessary charges.
Automation: Use infrastructure as code (IaC) tools like Terraform or CloudFormation to automate the setup and management of your ALB and EKS cluster.
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