def create_autoscaling_group_resource(template, api_instance_count_parameter,
launch_template_resource):
return template.add_resource(
autoscaling.AutoScalingGroup(
'AutoScalingGroup',
DesiredCapacity=Ref(api_instance_count_parameter),
MinSize=Ref(api_instance_count_parameter),
MaxSize=Ref(api_instance_count_parameter),
LaunchTemplate=autoscaling.LaunchTemplateSpecification(
LaunchTemplateId=Ref(launch_template_resource),
Version=GetAtt(launch_template_resource,
'LatestVersionNumber')),
AvailabilityZones=['eu-west-1a', 'eu-west-1b', 'eu-west-1c']))
MinimumHealthyPercent=0,
MaximumPercent=100
),
DesiredCount=Ref(scheduler_task_count),
LaunchType='EC2'
)
)
autoscaling_group = template.add_resource(
autoscaling.AutoScalingGroup(
'AutoScalingGroup',
DesiredCapacity=Ref(api_instance_count),
MinSize=Ref(api_instance_count),
MaxSize=Ref(api_instance_count),
LaunchTemplate=autoscaling.LaunchTemplateSpecification(
LaunchTemplateId=Ref(launch_template),
Version=GetAtt(launch_template, 'LatestVersionNumber')
),
AvailabilityZones=['eu-west-1a', 'eu-west-1b', 'eu-west-1c']
)
)
# Create the users.
api_user = template.add_resource(
iam.User(
'ApiUser',
UserName=Ref(api_user_name),
Policies=[
iam.Policy(
PolicyName='ApiUserPolicy',
PolicyDocument={
'Version': '2012-10-17',
DefaultActions=[
elasticloadbalancingv2.Action(
Type="forward",
TargetGroupArn=Ref('Tg'))
]))
# This is the ASG creation. The AvailabilityZones function didn't work for me due to some weird CF error about subnets.
# Since it's generally just a subset of VPCZoneIndentifier it should be ok to omit. I'd probably look into it more if
# I was serious about making a template for actual use.
asg = template.add_resource(
autoscaling.AutoScalingGroup(
"WordPressASG",
DependsOn='WordPressAsgLaunchTemplate',
TargetGroupARNs=[Ref('Tg')],
LaunchTemplate=autoscaling.LaunchTemplateSpecification(
LaunchTemplateId=Ref(lc),
Version=GetAtt('WordPressAsgLaunchTemplate',
'LatestVersionNumber')),
Cooldown=360,
MinSize=If(
'IsProd', '2',
Ref('pAsgMinSize')), # Dev gets 1 but we need 2 for HA in Prod
MaxSize=If('IsProd', Ref('pAsgMaxSize'),
'1'), # Dev gets max=1 but max=5 for Prod.
# AvailabilityZones=If('IsProd', [Ref('pVPCAvailabilityZone1'), Ref('pVPCAvailabilityZone2')], [Ref('pVPCAvailabilityZone1')]),
HealthCheckType="EC2",
MetricsCollection=[
autoscaling.MetricsCollection(Granularity='1Minute')
],
VPCZoneIdentifier=[Ref('pSubnet1'), Ref('pSubnet2')],
Tags=autoscaling.Tags(Name=Join(
'_', ['WordPressASG', Ref('AWS::StackName')]),