簡単になったEKSのマネージドワーカーノード

nodegroup.yaml

---
AWSTemplateFormatVersion: '2010-09-09'
Description: 'EKS Managed Nodes'
Resources:
  ManagedNodeGroup:
    Type: AWS::EKS::Nodegroup
    Properties:
      ClusterName: cluster1
      NodegroupName: worker1
      ScalingConfig:
        MinSize: 1
        MaxSize: 5
        DesiredSize: 1
      Subnets:
        Fn::Split:
        - ","
        - Fn::ImportValue: eksctl-cluster1-cluster::SubnetsPublic
      InstanceTypes:
      - t3.small
      AmiType: AL2_x86_64
      NodeRole:
        Fn::GetAtt: NodeInstanceRole.Arn
      Labels:
        alpha.eksctl.io/cluster-name: cluster1
        alpha.eksctl.io/nodegroup-name: worker1
      Tags:
        alpha.eksctl.io/nodegroup-name: worker1
        alpha.eksctl.io/nodegroup-type: managed
  NodeInstanceRole:
    Type: AWS::IAM::Role
    Properties:
      AssumeRolePolicyDocument:
        Statement:
        - Action:
          - sts:AssumeRole
          Effect: Allow
          Principal:
            Service:
            - ec2.amazonaws.com
        Version: '2012-10-17'
      ManagedPolicyArns:
      - arn:aws:iam::aws:policy/AmazonEKSWorkerNodePolicy
      - arn:aws:iam::aws:policy/AmazonEKS_CNI_Policy
      - arn:aws:iam::aws:policy/AmazonEC2ContainerRegistryReadOnly
      Path: "/"
  PolicyAutoScaling:
    Type: AWS::IAM::Policy
    Properties:
      PolicyDocument:
        Statement:
        - Action:
          - autoscaling:DescribeAutoScalingGroups
          - autoscaling:DescribeAutoScalingInstances
          - autoscaling:DescribeLaunchConfigurations
          - autoscaling:DescribeTags
          - autoscaling:SetDesiredCapacity
          - autoscaling:TerminateInstanceInAutoScalingGroup
          - ec2:DescribeLaunchTemplateVersions
          Effect: Allow
          Resource: "*"
        Version: '2012-10-17'
      PolicyName:
        Fn::Sub: "${AWS::StackName}-PolicyAutoScaling"
      Roles:
      - Ref: NodeInstanceRole