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@atward
Last active Nov 20, 2016
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AWS CustomResource example - Autoscaling group suspend/resume processes
AWSTemplateFormatVersion: 2010-09-09
Description: 'Custom resource example - ASG suspend/resume'
Parameters:
Input:
Type: String
Description: Make ASG
Default: true
AllowedValues: [true, false]
Conditions:
Enabled: !Equals [!Ref Input, true]
Resources:
Asg:
Type: AWS::AutoScaling::AutoScalingGroup
Condition: Enabled
Properties:
AvailabilityZones:
Fn::GetAZs:
Ref: "AWS::Region"
LaunchConfigurationName: !Ref LC
MaxSize: 0
MinSize: 0
LC:
Type: AWS::AutoScaling::LaunchConfiguration
Properties:
# Update to suit
ImageId: "ami-db704cb8"
InstanceType: "t2.micro"
AsgProcessModificationRole:
Type: AWS::IAM::Role
Properties:
AssumeRolePolicyDocument:
Version: 2012-10-17
Statement:
- Action: ['sts:AssumeRole']
Effect: Allow
Principal:
Service: [lambda.amazonaws.com]
Policies:
- PolicyName: AsgProcessModification
PolicyDocument:
Version: 2012-10-17
Statement:
- Effect: Allow
Action:
- 'autoscaling:ResumeProcesses'
- 'autoscaling:SuspendProcesses'
# http://docs.aws.amazon.com/autoscaling/latest/userguide/IAM.html#AutoScaling_ARN_Format
Resource: '*'
- Effect: Allow
Action:
- logs:CreateLogGroup,
- logs:CreateLogStream,
- logs:PutLogEvents
Resource: 'arn:aws:logs:*:*:*'
AsgProcessModifierFunction:
Type: AWS::Lambda::Function
Properties:
Description: 'Modifies ASG processes during CF stack creation'
Code:
ZipFile: |
import cfnresponse
import boto3
def handler(event, context):
print 'event: ', event
print 'context: ', context
client = boto3.client('autoscaling')
props = event['ResourceProperties']
if props['Action'] == 'SuspendProcesses':
response = client.suspend_processes(AutoScalingGroupName=props['AutoScalingGroupName'], ScalingProcesses=props['ScalingProcesses'])
elif props['Action'] == 'ResumeProcesses':
response = client.resume_processes(AutoScalingGroupName=props['AutoScalingGroupName'], ScalingProcesses=props['ScalingProcesses'])
cfnresponse.send(event, context, cfnresponse.SUCCESS, {}, "CustomResourcePhysicalID")
Handler: index.handler
Role: !GetAtt AsgProcessModificationRole.Arn
Runtime: 'python2.7'
ModifyAsg:
Type: AWS::CloudFormation::CustomResource
Condition: Enabled
Version: 1.0
Properties:
ServiceToken: !GetAtt AsgProcessModifierFunction.Arn
Action: SuspendProcesses
AutoScalingGroupName: !Ref Asg
ScalingProcesses:
- HealthCheck
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