kubernetes-the-hard-way/cloudformation/hard-k8s-worker-nodes.cfn.yml

Resources:
  HardK8sWorker0:
    Type: AWS::EC2::Instance
    Properties:
      InstanceType: t3.micro
      SubnetId: !ImportValue hard-k8s-subnet
      SecurityGroupIds:
      - !ImportValue hard-k8s-sg
      ImageId:
        Fn::FindInMap: [UbuntuAMIs, !Ref "AWS::Region", "id"]
      KeyName: !Ref ParamKeyName
      PrivateIpAddress: 10.240.0.20
      # SourceDestCheck: false
      UserData:
        Fn::Base64: |-
          Content-Type: multipart/mixed; boundary="//"
          MIME-Version: 1.0
          
          --//
          Content-Type: text/cloud-config; charset="us-ascii"
          MIME-Version: 1.0
          Content-Transfer-Encoding: 7bit
          Content-Disposition: attachment; filename="cloud-config.txt"
          
          #cloud-config
          fqdn: worker-0.k8shardway.local
          hostname: worker-0
          runcmd:
            - echo "preserve_hostname: true" >> /etc/cloud/cloud.cfg
          write_files:
            - path: /etc/hosts
              permissions: '0644'
              content: |
                127.0.0.1   localhost localhost.localdomain
                # Kubernetes the Hard Way - hostnames
                10.240.0.10 master-0
                10.240.0.11 master-1
                10.240.0.12 master-2
                10.240.0.20 worker-0
                10.240.0.21 worker-1
                10.240.0.22 worker-2
          
          --//
          Content-Type: text/x-shellscript; charset="us-ascii"
          MIME-Version: 1.0
          Content-Transfer-Encoding: 7bit
          Content-Disposition: attachment; filename="userdata.txt"
          
          #!/bin/bash
          echo 10.200.0.0/24 > /opt/pod_cidr.txt
          --//          
      Tags: [ { "Key": "Name", "Value": "worker-0" } ]

  HardK8sWorker1:
    Type: AWS::EC2::Instance
    Properties:
      InstanceType: t3.micro
      SubnetId: !ImportValue hard-k8s-subnet
      SecurityGroupIds:
      - !ImportValue hard-k8s-sg
      ImageId:
        Fn::FindInMap: [UbuntuAMIs, !Ref "AWS::Region", "id"]
      KeyName: !Ref ParamKeyName
      PrivateIpAddress: 10.240.0.21
      # SourceDestCheck: false
      UserData:
        Fn::Base64: |-
          Content-Type: multipart/mixed; boundary="//"
          MIME-Version: 1.0
          
          --//
          Content-Type: text/cloud-config; charset="us-ascii"
          MIME-Version: 1.0
          Content-Transfer-Encoding: 7bit
          Content-Disposition: attachment; filename="cloud-config.txt"
          
          #cloud-config
          fqdn: worker-1.k8shardway.local
          hostname: worker-1
          runcmd:
            - echo "preserve_hostname: true" >> /etc/cloud/cloud.cfg
          write_files:
            - path: /etc/hosts
              permissions: '0644'
              content: |
                127.0.0.1   localhost localhost.localdomain
                # Kubernetes the Hard Way - hostnames
                10.240.0.10 master-0
                10.240.0.11 master-1
                10.240.0.12 master-2
                10.240.0.20 worker-0
                10.240.0.21 worker-1
                10.240.0.22 worker-2
          
          --//
          Content-Type: text/x-shellscript; charset="us-ascii"
          MIME-Version: 1.0
          Content-Transfer-Encoding: 7bit
          Content-Disposition: attachment; filename="userdata.txt"
          
          #!/bin/bash
          echo 10.200.1.0/24 > /opt/pod_cidr.txt
          --//          
      Tags: [ { "Key": "Name", "Value": "worker-1" } ]

  HardK8sWorker2:
    Type: AWS::EC2::Instance
    Properties:
      InstanceType: t3.micro
      SubnetId: !ImportValue hard-k8s-subnet
      SecurityGroupIds:
      - !ImportValue hard-k8s-sg
      ImageId:
        Fn::FindInMap: [UbuntuAMIs, !Ref "AWS::Region", "id"]
      KeyName: !Ref ParamKeyName
      PrivateIpAddress: 10.240.0.22
      # SourceDestCheck: false
      UserData:
        Fn::Base64: |-
          Content-Type: multipart/mixed; boundary="//"
          MIME-Version: 1.0
          
          --//
          Content-Type: text/cloud-config; charset="us-ascii"
          MIME-Version: 1.0
          Content-Transfer-Encoding: 7bit
          Content-Disposition: attachment; filename="cloud-config.txt"
          
          #cloud-config
          fqdn: worker-2.k8shardway.local
          hostname: worker-2
          runcmd:
            - echo "preserve_hostname: true" >> /etc/cloud/cloud.cfg
          write_files:
            - path: /etc/hosts
              permissions: '0644'
              content: |
                127.0.0.1   localhost localhost.localdomain
                # Kubernetes the Hard Way - hostnames
                10.240.0.10 master-0
                10.240.0.11 master-1
                10.240.0.12 master-2
                10.240.0.20 worker-0
                10.240.0.21 worker-1
                10.240.0.22 worker-2
          
          --//
          Content-Type: text/x-shellscript; charset="us-ascii"
          MIME-Version: 1.0
          Content-Transfer-Encoding: 7bit
          Content-Disposition: attachment; filename="userdata.txt"
          
          #!/bin/bash
          echo 10.200.2.0/24 > /opt/pod_cidr.txt
          --//          
      Tags: [ { "Key": "Name", "Value": "worker-2" } ]

Parameters:
  ParamKeyName:
    Type: AWS::EC2::KeyPair::KeyName
    Default: ec2-key

# $ aws ec2 describe-regions --query 'Regions[].RegionName' --output text \
#   | tr "\t" "\n" | sort \
#   | xargs -I _R_ aws --region _R_ ec2 describe-images \
#                      --filters Name=name,Values="ubuntu/images/hvm-ssd/ubuntu-bionic-18.04-amd64-server-20191002" \
#                      --query 'Images[0].ImageId' --output
Mappings:
  UbuntuAMIs:
    ap-northeast-1: { "id": "ami-0cd744adeca97abb1" }
    ap-northeast-2: { "id": "ami-00379ec40a3e30f87" }
    ap-northeast-3: { "id": "ami-0bd42271bb31d96d2" }
    ap-south-1:     { "id": "ami-0123b531fc646552f" }
    ap-southeast-1: { "id": "ami-061eb2b23f9f8839c" }
    ap-southeast-2: { "id": "ami-00a54827eb7ffcd3c" }
    ca-central-1:   { "id": "ami-0b683aae4ee93ef87" }
    eu-central-1:   { "id": "ami-0cc0a36f626a4fdf5" }
    eu-north-1:     { "id": "ami-1dab2163" }
    eu-west-1:      { "id": "ami-02df9ea15c1778c9c" }
    eu-west-2:      { "id": "ami-0be057a22c63962cb" }
    eu-west-3:      { "id": "ami-087855b6c8b59a9e4" }
    sa-east-1:      { "id": "ami-02c8813f1ea04d4ab" }
    us-east-1:      { "id": "ami-04b9e92b5572fa0d1" }
    us-east-2:      { "id": "ami-0d5d9d301c853a04a" }
    us-west-1:      { "id": "ami-0dd655843c87b6930" }
    us-west-2:      { "id": "ami-06d51e91cea0dac8d" }

Outputs:
  Worker0:
    Value: !Ref HardK8sWorker0
    Export: { Name: hard-k8s-worker-0 }
  Worker1:
    Value: !Ref HardK8sWorker1
    Export: { Name: hard-k8s-worker-1 }
  Worker2:
    Value: !Ref HardK8sWorker2
    Export: { Name: hard-k8s-worker-2 }