Nahuel Hernandez

Nahuel Hernandez

Another personal blog about IT, Automation, Cloud, DevOps and Stuff.

AWS Ingress controller integration with External DNS and ACM on EKS

Integrating the AWS Ingress controller with External DNS and ACM streamlines the exposure of multiple applications via a single Application Load Balancer (ALB), offering a cost-effective solution by consolidating resources. This approach not only automates DNS record creation with ExternalDNS and Route53, directly within Kubernetes for enhanced efficiency but also ensures secure connections through SSL termination with AWS Certificate Manager (ACM). This cost-saving integration facilitates seamless and secure access to services on EKS clusters, showcasing the efficiency and financial advantages of leveraging these combined technologies for optimal application management.

4-Minute Read

Ingress

This POC demonstrates the integration of Amazon EKS with the Application Load Balancer (ALB) Ingress Controller. The primary goal is to expose multiple applications through a single ALB efficiently. This setup utilizes ExternalDNS in conjunction with Route53 to dynamically create DNS records using Ingress annotations within Kubernetes.

ChatOps on EKS using BotKube

ChatOps allows us to operate DevOps tools using chat clients. Implementing ChatOps with EKS is painless using BotKube. This tool lets us monitor and debug our K8S cluster. The app integrates with Slack, Teams, etc. So, for example, we could view our K8S deployments with a simple command on Slack or view logs in real-time. Also, give us recommendations for standard practice, such avoid using the latest containers image versions

3-Minute Read

BotKube

BotKube is a messaging bot for monitoring and debugging K8S clusters in real-time. Some features are:

Create EKS with auto-provisioning nodes effortless using Karpenter and Eksclt

With the new Eksctl and Karpenter versions, we can create EKS clusters with nodes auto-provisioning quickly and effortlessly. Furthermore, we no longer need to create extra resources on AWS manually; Eksctl will do that for us. This way allows us to create and replicate clusters creation with the possibility of scaling our nodes on-demand and reducing the data plane cost.

2-Minute Read

Karpenter

Note: This post is an updated and reduced version of an old blog post if you want to know more about Karpenter you should check it https://nahuelhernandez.com/blog/karpenter_kubernetes_node_autoscaling/

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Over 15-year experience in the IT industry. Working in SysOps, DevOps and Architecture roles with mission-critical systems across a wide range of industries. Wide experience with AWS, Terraform, Kubernetes, Containers, CI/CD pipelines, and Linux. Always keeping up with the latest technologies. Passionate about automating the run of the mill. Big focus on problem-solving.