ecs cloudformation

ecs.json

{
  "AWSTemplateFormatVersion" : "2010-09-09",
  "Parameters" : {
    "KeyName": {
      "Type": "AWS::EC2::KeyPair::KeyName",
      "Description": "Name of an existing EC2 KeyPair to enable SSH access to the ECS instances"
    },
    "SubnetID": {
      "Type": "List<AWS::EC2::Subnet::Id>",
      "Description": "List of an existing subnet IDs to use for the load balancer and auto scaling group"
    },
    "DesiredCapacity": {
      "Type": "Number",
      "Default" : "1",
      "Description": "Number of instances to launch in your ECS cluster"
    },
    "MaxSize": {
      "Type": "Number",
      "Default" : "1",
      "Description": "Maximum number of instances that can be launched in your ECS cluster"
    },
    "InstanceType" : {
      "Description" : "The EC2 instance type",
      "Type" : "String",
      "Default" : "t2.micro",
      "AllowedValues" : [ "t2.micro", "t2.small", "t2.medium", "m3.medium", "m3.large", "m3.xlarge",
"m3.2xlarge", "c3.large", "c3.xlarge", "c3.2xlarge", "c3.4xlarge", "c3.8xlarge", "c4.large", "c4.xlarge",
"c4.2xlarge", "c4.4xlarge", "c4.8xlarge", "r3.large", "r3.xlarge", "r3.2xlarge", "r3.4xlarge", "r3.8xlarge",
"i2.xlarge", "i2.2xlarge", "i2.4xlarge", "i2.8xlarge", "d2.xlarge", "d2.2xlarge", "d2.4xlarge", "d2.8xlarge",
"hi1.4xlarge", "hs1.8xlarge", "cr1.8xlarge", "cc2.8xlarge"],
      "ConstraintDescription" : "must be a valid EC2 instance type."
    },
    "SSHLocation" : {
      "Description" : " The IP address range that can be used to SSH to the EC2 instances",
      "Type": "String",
      "MinLength": "9",
      "MaxLength": "18",
      "Default": "0.0.0.0/0",
      "AllowedPattern": "(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})\\.(\\d{1,3})/(\\d{1,2})",
      "ConstraintDescription": "must be a valid IP CIDR range of the form x.x.x.x/x."
    }
  },

  "Mappings" : {
    "AWSRegionToAMI" : {
      "ap-southeast-2" : { "AMIID" : "ami-fb0d45c1" }
    }
  },

  "Resources" : {
    "ECSCluster": {
      "Type": "AWS::ECS::Cluster"
    },
    "taskdefinition": {
      "Type": "AWS::ECS::TaskDefinition",
      "Properties" : {
        "ContainerDefinitions" : [
          {
            "Name": "node-app",
            "Cpu": "10",
            "Essential": "true",
            "Image":"aterreno/docker-node-hello",
            "Memory":"300",
            "PortMappings": [
              { "HostPort": 80, "ContainerPort": 8080 }
            ]
          }
        ]
      }
    },
    "EcsElasticLoadBalancer" : {
      "Type" : "AWS::ElasticLoadBalancing::LoadBalancer",
      "Properties" : {
        "Subnets" : { "Ref" : "SubnetID" },
        "Listeners" : [ {
          "LoadBalancerPort" : "80",
          "InstancePort" : "80",
          "Protocol" : "HTTP"
        } ],
        "HealthCheck" : {
          "Target" : "HTTP:80/",
          "HealthyThreshold" : "2",
          "UnhealthyThreshold" : "10",
          "Interval" : "30",
          "Timeout" : "5"
        }
      }
    },
    "ECSAutoScalingGroup" : {
      "Type" : "AWS::AutoScaling::AutoScalingGroup",
      "Properties" : {
        "VPCZoneIdentifier" : { "Ref" : "SubnetID" },
        "LaunchConfigurationName" : { "Ref" : "ContainerInstances" },
        "MinSize" : "1",
        "MaxSize" : { "Ref" : "MaxSize" },
        "DesiredCapacity" : { "Ref" : "DesiredCapacity" }
      },
      "CreationPolicy" : {
        "ResourceSignal" : {
          "Timeout" : "PT5M"
        }
      },
      "UpdatePolicy": {
        "AutoScalingRollingUpdate": {
          "MinInstancesInService": "1",
          "MaxBatchSize": "1",
          "PauseTime" : "PT1M",
          "WaitOnResourceSignals": "true"
        }
      }
    },
    "ContainerInstances": {
      "Type": "AWS::AutoScaling::LaunchConfiguration",
      "Metadata" : {
        "AWS::CloudFormation::Init" : {
          "config" : {

            "commands" : {
              "01_add_instance_to_cluster" : {
                "command" : { "Fn::Join": [ "", [ "#!/bin/bash\n", "echo ECS_CLUSTER=", { "Ref": "ECSCluster" }, " >> /etc/ecs/ecs.config" ] ] }
              }
            },

            "files" : {
              "/etc/cfn/cfn-hup.conf" : {
                "content" : { "Fn::Join" : ["", [
                  "[main]\n",
                  "stack=", { "Ref" : "AWS::StackId" }, "\n",
                  "region=", { "Ref" : "AWS::Region" }, "\n"
                ]]},
                "mode"    : "000400",
                "owner"   : "root",
                "group"   : "root"
              },
              "/etc/cfn/hooks.d/cfn-auto-reloader.conf" : {
                "content": { "Fn::Join" : ["", [
                  "[cfn-auto-reloader-hook]\n",
                  "triggers=post.update\n",
                  "path=Resources.ContainerInstances.Metadata.AWS::CloudFormation::Init\n",
                  "action=/opt/aws/bin/cfn-init -v ",
                  "         --stack ", { "Ref" : "AWS::StackName" },
                  "         --resource ContainerInstances ",
                  "         --region ", { "Ref" : "AWS::Region" }, "\n",
                  "runas=root\n"
                ]]}
              }
            },

            "services" : {
              "sysvinit" : {
                "cfn-hup" : { "enabled" : "true", "ensureRunning" : "true", "files" : ["/etc/cfn/cfn-hup.conf", "/etc/cfn/hooks.d/cfn-auto-reloader.conf"] }
              }
            }
          }
        }
      },
      "Properties": {
        "ImageId" : { "Fn::FindInMap" : [ "AWSRegionToAMI", { "Ref" : "AWS::Region" }, "AMIID" ] },
        "InstanceType"   : { "Ref" : "InstanceType" },
        "IamInstanceProfile": { "Ref": "EC2InstanceProfile" },
        "KeyName"        : { "Ref" : "KeyName" },
        "UserData"       : { "Fn::Base64" : { "Fn::Join" : ["", [
             "#!/bin/bash -xe\n",
             "yum install -y aws-cfn-bootstrap\n",

             "/opt/aws/bin/cfn-init -v ",
             "         --stack ", { "Ref" : "AWS::StackName" },
             "         --resource ContainerInstances ",
             "         --region ", { "Ref" : "AWS::Region" }, "\n",

             "/opt/aws/bin/cfn-signal -e $? ",
             "         --stack ", { "Ref" : "AWS::StackName" },
             "         --resource ECSAutoScalingGroup ",
             "         --region ", { "Ref" : "AWS::Region" }, "\n"
        ]]}}
      }
    },
    "service": {
      "Type": "AWS::ECS::Service",
      "DependsOn": ["ECSAutoScalingGroup"],
      "Properties" : {
        "Cluster": {"Ref": "ECSCluster"},
        "DesiredCount": "2",
        "LoadBalancers": [
          {
            "ContainerName": "node-app",
            "ContainerPort": "8080",
            "LoadBalancerName" : { "Ref" : "EcsElasticLoadBalancer" }
          }
        ],
        "Role" : {"Ref":"ECSServiceRole"},
        "TaskDefinition" : {"Ref":"taskdefinition"}
      }
    },
    "ECSServiceRole": {
      "Type": "AWS::IAM::Role",
      "Properties": {
        "AssumeRolePolicyDocument": {
          "Statement": [
            {
              "Effect": "Allow",
              "Principal": {
                "Service": [
                  "ecs.amazonaws.com"
                ]
              },
              "Action": [
                "sts:AssumeRole"
              ]
            }
          ]
        },
        "Path": "/",
        "Policies": [
          {
            "PolicyName": "ecs-service",
            "PolicyDocument": {
              "Statement": [
                {
                  "Effect": "Allow",
                  "Action": [
                    "elasticloadbalancing:Describe*",
                    "elasticloadbalancing:DeregisterInstancesFromLoadBalancer",
                    "elasticloadbalancing:RegisterInstancesWithLoadBalancer",
                    "ec2:Describe*",
                    "ec2:AuthorizeSecurityGroupIngress"
                  ],
                  "Resource": "*"
                }
              ]
            }
          }
        ]
      }
    },
    "EC2Role": {
      "Type": "AWS::IAM::Role",
      "Properties": {
        "AssumeRolePolicyDocument": {
        "Statement": [
            {
              "Effect": "Allow",
              "Principal": {
                "Service": [
                  "ec2.amazonaws.com"
                ]
              },
              "Action": [
                "sts:AssumeRole"
              ]
            }
          ]
        },
        "Path": "/",
        "Policies": [
          {
            "PolicyName": "ecs-service",
            "PolicyDocument": {
              "Statement": [
                {
                  "Effect": "Allow",
                  "Action": [
                    "ecs:CreateCluster",
                    "ecs:RegisterContainerInstance",
                    "ecs:DeregisterContainerInstance",
                    "ecs:DiscoverPollEndpoint",
                    "ecs:Submit*",
                    "ecs:Poll"
                  ],
                  "Resource": "*"
                }
              ]
            }
          }
        ]
      }
    },
    "EC2InstanceProfile": {
      "Type": "AWS::IAM::InstanceProfile",
      "Properties": {
        "Path": "/",
        "Roles": [
          {
            "Ref": "EC2Role"
          }
        ]
      }
    }
  },

  "Outputs" : {
    "ecsservice" : {
      "Value" : { "Ref" : "service" }
    },
    "ecscluster" : {
      "Value" : { "Ref" : "ECSCluster" }
    },
    "taskdef" : {
      "Value" : { "Ref" : "taskdefinition" }
    }
  }
}