Introduction :-

Welcome to a transformative journey towards optimizing your Kubernetes (EKS) clusters for both cost efficiency and eco-friendliness using Kube-Green Sleep and Terraform. This comprehensive guide is tailored for beginners, providing easy-to-follow steps to implement Kube-Green Sleep effectively.

Benefits of Using Kube-Green Sleep

Discover the advantages that come with integrating Kube-Green Sleep into your EKS clusters:

• Save Money: Reduce your cloud bill by optimizing resource usage.

• Contribute to a Healthier Planet: Embrace eco-friendly practices by utilizing fewer computing resources.

• Organize Your Cluster: Gain control over resource activation and deactivation, ensuring a well-managed cluster.

Pre-requestites :-

• An active kubernetes cluster (Amazon EKS).

• Terraform installed on your system.

• Basic knowledge on Terraform & Kubectl command line.

Procedure :-

Step-1 :- Create a directory and add terraform configuration files such as main.tf, variables.tf.
Step-2 :- Copy the below code into your main.tf file.

data "aws_eks_cluster" "default" {
  name = var.eks_cluster_name
}

data "aws_eks_cluster_auth" "default" {
  name = var.eks_cluster_name
}

provider "kubernetes" {
  host                   = data.aws_eks_cluster.default.endpoint
  cluster_ca_certificate = base64decode(data.aws_eks_cluster.default.certificate_authority.0.data)
  token                  = data.aws_eks_cluster_auth.default.token
}

resource "kubernetes_manifest" "sleepinfo_working_hours" {
  for_each = toset(var.target_namespaces)

  manifest = {
    "apiVersion" = "kube-green.com/v1alpha1"
    "kind" = "SleepInfo"
    "metadata" = {
      "name" = "working-hours"
      "namespace" = each.key
    }
    "spec" = {
      "excludeRef" = [
        {
          "apiVersion" = "deployment.apps/v1"
          "kind" = "Deployment"
          "name" = "${each.key}-.*"
        },
      ]
      "sleepAt" = "03:00"
      "timeZone" = "Asia/Kolkata"
      "wakeUpAt" = "08:00"
      "suspendCronJobs" = true
      "weekdays" = "1-5"
    }
  }
}

Step-3 :- create a variables.tf file and copy the below terraform code intot your variables.tf file.

variable "env_name" {
  type        = string
  description = "Type of environment ex: dev, stage or prod"
}

variable "eks_cluster_name" {
  type        = string
  description = "name of eks cluster"
}

variable "target_namespaces" {
  type    = list(string)
  default = ["grafana", "prometheus", "argocd", "kubecost"]
}

Step-4 :- open a terminal or command prompt window and navigate to your terraform code directory. Run the terraform init, plan and apply commands one-by-one to deploy your code.

Step-5 :- once the code is being deployed, u can see that the kube-green will shut-down the pods at the specified time and also the pods will wake-up at the specific wake-up time.

Conclusion :-

Congratulations! You’ve successfully taken a significant step towards optimizing your EKS clusters with Kube-Green Sleep. This guide has equipped you with an understanding of Kube-Green Sleep, readiness for deployment, and the essential steps to deploy using Terraform. Remember, every effort towards efficient computing contributes to a collective initiative in reducing environmental impact. Keep exploring ways to optimize your EKS cluster for a sustainable future!

#AWS #EKS #Kubernetes #Terraform #CloudOptimization #EcoFriendlyComputing #CostEfficiency #InfrastructureAsCode #KubeGreenSleep #DevOps #CloudManagement