Created
June 13, 2019 20:12
-
-
Save nathanpeck/87ac3861ab7e47de016287ba2587b104 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
AWSTemplateFormatVersion: '2010-09-09' | |
Description: Deploy a service into an ECS cluster with service discovery endpoint | |
Parameters: | |
EnvironmentName: | |
Type: String | |
Default: production | |
Description: The name of the environment to add this service to | |
ServiceName: | |
Type: String | |
Default: nginx | |
Description: The name of the service to scale | |
Resources: | |
# Enable autoscaling for the service | |
ScalableTarget: | |
Type: AWS::ApplicationAutoScaling::ScalableTarget | |
Properties: | |
ServiceNamespace: 'ecs' | |
ScalableDimension: 'ecs:service:DesiredCount' | |
ResourceId: | |
Fn::Join: | |
- '/' | |
- - service | |
- Fn::ImportValue: !Sub ${EnvironmentName}:ClusterName | |
- !Ref 'ServiceName' | |
MinCapacity: 2 | |
MaxCapacity: 10 | |
RoleARN: | |
Fn::ImportValue: !Sub ${EnvironmentName}:AutoscalingRole | |
# Create scaling policies that describe how to scale the service up and down. | |
ScaleDownPolicy: | |
Type: AWS::ApplicationAutoScaling::ScalingPolicy | |
DependsOn: ScalableTarget | |
Properties: | |
PolicyName: !Sub scale-${EnvironmentName}-${ServiceName}-down | |
PolicyType: StepScaling | |
ResourceId: | |
Fn::Join: | |
- '/' | |
- - service | |
- Fn::ImportValue: !Sub ${EnvironmentName}:ClusterName | |
- !Ref 'ServiceName' | |
ScalableDimension: 'ecs:service:DesiredCount' | |
ServiceNamespace: 'ecs' | |
StepScalingPolicyConfiguration: | |
AdjustmentType: 'ChangeInCapacity' | |
StepAdjustments: | |
- MetricIntervalUpperBound: 0 | |
ScalingAdjustment: -1 | |
MetricAggregationType: 'Average' | |
Cooldown: 60 | |
ScaleUpPolicy: | |
Type: AWS::ApplicationAutoScaling::ScalingPolicy | |
DependsOn: ScalableTarget | |
Properties: | |
PolicyName: !Sub scale-${EnvironmentName}-${ServiceName}-up | |
PolicyType: StepScaling | |
ResourceId: | |
Fn::Join: | |
- '/' | |
- - service | |
- Fn::ImportValue: !Sub ${EnvironmentName}:ClusterName | |
- !Ref 'ServiceName' | |
ScalableDimension: 'ecs:service:DesiredCount' | |
ServiceNamespace: 'ecs' | |
StepScalingPolicyConfiguration: | |
AdjustmentType: 'ChangeInCapacity' | |
StepAdjustments: | |
- MetricIntervalLowerBound: 0 | |
MetricIntervalUpperBound: 15 | |
ScalingAdjustment: 1 | |
- MetricIntervalLowerBound: 15 | |
MetricIntervalUpperBound: 25 | |
ScalingAdjustment: 2 | |
- MetricIntervalLowerBound: 25 | |
ScalingAdjustment: 3 | |
MetricAggregationType: 'Average' | |
Cooldown: 60 | |
# Create alarms to trigger the scaling policies | |
LowCpuUsageAlarm: | |
Type: AWS::CloudWatch::Alarm | |
Properties: | |
AlarmName: !Sub low-cpu-${EnvironmentName}-${ServiceName} | |
AlarmDescription: !Sub "Low CPU utilization for service ${ServiceName} in environment ${EnvironmentName}" | |
MetricName: CPUUtilization | |
Namespace: AWS/ECS | |
Dimensions: | |
- Name: ServiceName | |
Value: !Ref 'ServiceName' | |
- Name: ClusterName | |
Value: | |
Fn::ImportValue: !Sub ${EnvironmentName}:ClusterName | |
Statistic: Average | |
Period: 60 | |
EvaluationPeriods: 1 | |
Threshold: 20 | |
ComparisonOperator: LessThanOrEqualToThreshold | |
AlarmActions: | |
- !Ref ScaleDownPolicy | |
HighCpuUsageAlarm: | |
Type: AWS::CloudWatch::Alarm | |
Properties: | |
AlarmName: !Sub high-cpu-${EnvironmentName}-${ServiceName} | |
AlarmDescription: !Sub "High CPU utilization for service ${ServiceName} in environment ${EnvironmentName}" | |
MetricName: CPUUtilization | |
Namespace: AWS/ECS | |
Dimensions: | |
- Name: ServiceName | |
Value: !Ref 'ServiceName' | |
- Name: ClusterName | |
Value: | |
Fn::ImportValue: !Sub ${EnvironmentName}:ClusterName | |
Statistic: Average | |
Period: 60 | |
EvaluationPeriods: 1 | |
Threshold: 70 | |
ComparisonOperator: GreaterThanOrEqualToThreshold | |
AlarmActions: | |
- !Ref ScaleUpPolicy |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment