ec2-spot-fleet.json

{
  "AWSTemplateFormatVersion": "2010-09-09",
  "Description": "EC2 Spot Fleet",
  "Mappings": {
    "amiRegion": {
      "us-east-1": { "AMI": "ami-0dbb717f493016a1a" },
      "us-east-2": { "AMI": "ami-0d6808451e868a339" },
      "us-west-1": { "AMI": "ami-09f2f73141c83d4fe" },
      "us-west-2": { "AMI": "ami-008d8ed4bd7dc2485" }
    }
  },
  "Parameters": {
    "spotFleetS3BucketName": {
      "Type": "String",
      "Description": "AWS S3 Bucket that will be accessed by the Spot Fleet"
    },
    "spotFleetUserData": {
      "Type": "String",
      "Description": "executes on the Spot Fleet"
    },
    "spotFleetKeyPairName": {
      "Type": "AWS::EC2::KeyPair::KeyName",
      "Description": "Name of an existing EC2 KeyPair to enable SSH access to the EC2 Instances"
    },
    "spotFleetInstanceType": {
      "Type": "String",
      "AllowedValues": ["p3.2xlarge", "p2.8xlarge"],
      "Description": "EC2 Instance type to use"
    },
    "spotFleetSecurityGroup": {
      "Type": "AWS::EC2::SecurityGroup::Id",
      "Description": "Security Group ID"
    },
    "spotFleetMaximumCapacity": {
      "Type": "Number",
      "Description": "The maximum number of units to request for the Spot Fleet"
    },
    "spotFleetTargetCapacity": {
      "Type": "Number",
      "Description": "The number of units to request for the Spot Fleet"
    },
    "spotFleetPrice": {
      "Type": "Number",
      "Description": "The maximum price per unit hour that you are willing to pay for a Spot Instance. The default is the On-Demand price"
    },
    "spotFleetAllocationStrategy": {
      "Type": "String",
      "Description": "Indicates how to allocate the target Spot Instance capacity across the Spot Instance pools specified by the Spot Fleet request"
    },
    "spotFleetSubnets": {
      "Type": "String",
      "Description": "Subnetwork/s ID"
    },
    "spotFleetRequestType": {
      "Type": "String",
      "Description": "One of [instant | maintain | request]"
    }
  },
  "Outputs": {
    "spotFleetRoleARN": { "Value": { "Fn::GetAtt": ["spotFleetRole", "Arn"]}},
    "spotFleetRequestId": { "Value": { "Ref": "spotFleet" }}
  },
  "Resources": {
    "spotFleetRole": {
      "Type": "AWS::IAM::Role",
      "Properties": {
        "ManagedPolicyArns": [ "arn:aws:iam::aws:policy/service-role/AmazonEC2SpotFleetTaggingRole" ],
        "AssumeRolePolicyDocument": {
          "Version": "2012-10-17",
          "Statement": [
            {
              "Effect": "Allow",
              "Principal": { "Service": ["spotfleet.amazonaws.com"] },
              "Action": ["sts:AssumeRole"]
            }
          ]
        }
      }
    },
    "spotFleetAutoscaleRole": {
      "Type": "AWS::IAM::Role",
      "Properties": {
        "ManagedPolicyArns": ["arn:aws:iam::aws:policy/service-role/AmazonEC2SpotFleetAutoscaleRole"],
        "AssumeRolePolicyDocument": {
          "Version": "2012-10-17",
          "Statement": [
            { "Action": ["sts:AssumeRole"],
              "Effect": "Allow",
              "Principal": { "Service": ["application-autoscaling.amazonaws.com"] }
            }
          ]
        }
      }
    },
    "spotFleetInstanceRole": {
      "Type": "AWS::IAM::Role",
      "Properties": {
        "AssumeRolePolicyDocument": {
          "Version": "2012-10-17",
          "Statement": [
            {
              "Action": [ "sts:AssumeRole" ],
              "Effect": "Allow",
              "Principal": { "Service": ["ec2.amazonaws.com"] }
            }
          ]
        },
        "Policies": [
          {
            "PolicyName": { "Fn::Join": ["-", [ { "Ref": "AWS::StackName" }, "cloudWatchLogsPolicy" ] ] },
            "PolicyDocument": {
              "Version": "2012-10-17",
              "Statement": [
                {
                  "Action": [
                    "logs:CreateLogGroup",
                    "logs:CreateLogStream",
                    "logs:PutLogEvents",
                    "logs:DescribeLogStreams"
                  ],
                  "Effect": "Allow",
                  "Resource": "arn:aws:logs:*:*:*"
                }
              ]
            }
          },
          {
            "PolicyName": { "Fn::Join": ["-", [{ "Ref": "AWS::StackName" }, "s3BucketListPolicy"] ]},
            "PolicyDocument": {
              "Version": "2012-10-17",
              "Statement": [
                {
                  "Action": "s3:ListBucket",
                  "Effect": "Allow",
                  "Resource": [{ "Fn::Join": ["", ["arn:aws:s3:::", { "Ref": "spotFleetS3BucketName" }, "/*"] ]}]
                }
              ]
            }
          },
          {
            "PolicyName": { "Fn::Join": ["-", [{ "Ref": "AWS::StackName" }, "s3BucketReadWritePolicy"] ]},
            "PolicyDocument": {
              "Version": "2012-10-17",
              "Statement": [
                {
                  "Action": [
                    "s3:PutObject*",
                    "s3:GetObject",
                    "s3:DeleteObject"
                  ],
                  "Effect": "Allow",
                  "Resource": [ { "Fn::Join": ["", ["arn:aws:s3:::", { "Ref": "spotFleetS3BucketName" }, "/*"] ]}]
                }
              ]
            }
          }
        ]
      }
    },
    "spotFleetInstanceProfile": {
      "DependsOn": ["spotFleetInstanceRole"],
      "Type": "AWS::IAM::InstanceProfile",
      "Properties": {
        "Path": "/",
        "Roles": [ { "Ref": "spotFleetInstanceRole" }]
      }
    },
    "spotFleetScalingPolicyDown": {
      "Type" : "AWS::ApplicationAutoScaling::ScalingPolicy",
      "Properties" : {
        "PolicyName": "spotFleetScalingPolicyScaleDown",
        "PolicyType": "StepScaling",
        "ScalingTargetId": { "Ref": "spotFleetScalableTarget" },
        "StepScalingPolicyConfiguration": {
          "AdjustmentType": "ChangeInCapacity",
          "Cooldown": 300,
          "MetricAggregationType": "Average",
          "StepAdjustments": [
            {
              "MetricIntervalUpperBound": 0,
              "ScalingAdjustment": -1
            }
          ]
        }
      }
    },
    "spotFleetScalingPolicyUp": {
      "Type" : "AWS::ApplicationAutoScaling::ScalingPolicy",
      "Properties" : {
        "PolicyName": "spotFleetScalingPolicyUp",
        "PolicyType": "StepScaling",
        "ScalingTargetId": { "Ref": "spotFleetScalableTarget" },
        "StepScalingPolicyConfiguration": {
          "AdjustmentType": "ChangeInCapacity",
          "Cooldown": 300,
          "MetricAggregationType": "Average",
          "StepAdjustments": [
            {
              "MetricIntervalUpperBound": 0,
              "ScalingAdjustment": 1
            }
          ]
        }
      }
    },
    "spotFleetScalableTarget": {
      "DependsOn": ["spotFleet", "spotFleetAutoscaleRole"],
      "Type" : "AWS::ApplicationAutoScaling::ScalableTarget",
      "Properties" : {
        "MaxCapacity": { "Ref": "spotFleetMaximumCapacity" },
        "MinCapacity": { "Ref": "spotFleetTargetCapacity" },
        "ResourceId": { "Fn::Join": ["/", ["spot-fleet-request", { "Ref": "spotFleet" }] ]},
        "RoleARN": { "Fn::GetAtt": ["spotFleetAutoscaleRole", "Arn"] },
        "ScalableDimension": "ec2:spot-fleet-request:TargetCapacity",
        "ServiceNamespace": "ec2"
      }
    },
    "spotFleet": {
      "Type": "AWS::EC2::SpotFleet",
      "Properties": {
        "SpotFleetRequestConfigData": {
          "IamFleetRole": { "Fn::GetAtt": ["spotFleetRole", "Arn"] },
          "AllocationStrategy": { "Ref": "spotFleetAllocationStrategy" },
          "SpotPrice": { "Ref": "spotFleetPrice" },
          "TargetCapacity": { "Ref": "spotFleetTargetCapacity" },
          "TerminateInstancesWithExpiration": true,
          "ReplaceUnhealthyInstances": true,
          "Type": { "Ref": "spotFleetRequestType" },
          "LaunchSpecifications": [
            {
              "Monitoring": { "Enabled": true },
              "ImageId": {
                "Fn::FindInMap": [
                  "amiRegion",
                  { "Ref": "AWS::Region" },
                  "AMI"
                ]
              },
              "IamInstanceProfile": {
                "Arn": { "Fn::GetAtt": ["spotFleetInstanceProfile", "Arn"] }
              },
              "InstanceType": { "Ref": "spotFleetInstanceType" },
              "KeyName": { "Ref": "spotFleetKeyPairName" },
              "SecurityGroups": [{ "GroupId": { "Ref": "spotFleetSecurityGroup" } }],
              "SubnetId": { "Ref": "spotFleetSubnets" },
              "EbsOptimized": false,
              "UserData" : { "Fn::Base64" : { "Fn::Join" : ["", [ { "Ref": "spotFleetUserData" } ] ] } },
              "TagSpecifications": [
                {
                  "ResourceType": "instance",
                  "Tags": [
                    { "Key": "Name", "Value": { "Fn::Join": ["", [ { "Ref": "AWS::StackName" }, "-instance"] ] } }
                  ]
                }
              ]
            }
          ]
        }
      }
    }
  }
}