cloud/eks/opsfile.yml

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version: '3'

vars:
  MAX: 100
  TIMEOUT: 1m

env:
  KUBECONFIG: 
    sh: |-
        if test -e $OPS_TMP/kubeconfig
        then echo $OPS_TMP/kubeconfig
        else echo ~/.kube/config
        fi

tasks:
  prereq:
    desc: check prerequisites
    silent: true
    cmds:
    - test -n "$EKS_NAME" || die 'Please, configure EKS with "ops config eks"'
    - "aws --version || die 'You need to install aws cli from : https://docs.aws.amazon.com/cli/latest/userguide/getting-started-install.html'"
    - "aws ec2 describe-key-pairs --key-names $AWS_SSHKEY --query 'KeyPairs[*].{KeyName: KeyName}' --output text --no-paginate --no-cli-pager || die \"Please generate or import the configured key in region $AWS_DEFAULT_REGION before continuing.\""
    - config EKS_PREREQ_OK="true"
    status:
    - config EKS_PREREQ_OK

  update-yaml:
    cmds:
    - curl -L https://github.com/cert-manager/cert-manager/releases/download/v1.11.0/cert-manager.yaml >cert-manager.yaml
    - curl -L "https://raw.githubusercontent.com/kubernetes/ingress-nginx/main/deploy/static/provider/aws/deploy.yaml" >ingress-deploy.yaml

  wait:
    #desc: util wait for objects - user OBJECT= to specify what
    silent: true
    cmds:
    - |
      N=0
      echo "Waiting for {{.OBJECT}}"
      while ! kubectl --kubeconfig=$OPS_TMP/kubeconfig get {{.OBJECT}}  --request-timeout="{{.TIMEOUT}}" 2>/dev/null >/dev/null
      do echo "$((N++)) Still waiting for {{.OBJECT}}..."
      done
    - |
      N=0
      RES=false
      while [[ $N -lt {{.MAX}} ]]
      do  echo "$((N++)) Waiting for {{.OBJECT}} ready"
          if kubectl --kubeconfig=$OPS_TMP/kubeconfig get {{.OBJECT}} --request-timeout={{.TIMEOUT}} 2>/dev/null
          then RES=true
              break
          fi
      done
      $RES

  status:
    silent: true
    cmds:
      - task: prereq
      - kubectl get nodes

  build:
    silent: true
    #desc: install EKS using eksctl CLI
    cmds:
      - "envsubst -i eks-cluster.yml  -o _eks-cluster.yml"
      - |
        if ! eksctl get cluster -n "$EKS_NAME" --region "$AWS_DEFAULT_REGION" 2>/dev/null
        then eksctl create cluster -f _eks-cluster.yml --kubeconfig $OPS_TMP/kubeconfig
        fi

  certman: 
    cmds:
      - |
        if test -z "{{.DEL}}"
        then retry -t 1000 -m 1800 kubectl --kubeconfig $OPS_TMP/kubeconfig apply -f cert-manager.yaml
        else kubectl apply -f cert-manager.yaml
        fi

  ingress:
    cmds:
      - |
        if test -z "{{.DEL}}"
        then retry -t 1000 -m 1800 kubectl --kubeconfig  $OPS_TMP/kubeconfig apply -f ingress-deploy.yaml
        else kubectl delete -f ingress-deploy.yaml
        fi
  
  create:
    silent: true
    desc: create an Amazon EKS cluster
    cmds:
    - task: prereq
    - task: build
    - task: wait
      vars:
        OBJECT: nodes
    - task: ingress
    - task: certman
    - task: kubeconfig

  lb:
    silent: true
    desc: show the load balancer hostname
    cmds:
      - > 
        kubectl -n ingress-nginx get svc/ingress-nginx-controller  
        -o jsonpath='{.status.loadBalancer.ingress[0].hostname}' 2>/dev/null
        || die "load balancer not found"
      - echo ""

  delete:
    silent: true
    desc: delete the current Amazon EKS cluster
    cmds:
    - envsubst -i eks-cluster.yml -o _eks-cluster.yml
    - echo "*** Deleting the Cluster"
    - "eksctl delete cluster -f _eks-cluster.yml --disable-nodegroup-eviction"
    - "rm $OPS_TMP/kubeconfig"
    ignore_error: true

  config:
    desc: configure an Amazon EKS cluster
    silent: true
    cmds:
    - $OPS config eks

  kubeconfig:
    silent: true
    desc: extract kubeconfig for connecting to the cluster
    cmds:
    - task: prereq
    - "eksctl utils write-kubeconfig --cluster=$EKS_NAME --kubeconfig=$OPS_TMP/kubeconfig"
    - cp "$OPS_TMP/kubeconfig" "$OPS_TMP/eks-$EKS_NAME.kubeconfig"