def create_auto_scaling_resources(self, worker_security_group, worker_lb):
worker_launch_config_name = 'lcWorker'
worker_launch_config = self.add_resource(
asg.LaunchConfiguration(
worker_launch_config_name,
EbsOptimized=True,
ImageId=Ref(self.worker_ami),
IamInstanceProfile=Ref(self.worker_instance_profile),
InstanceType=Ref(self.worker_instance_type),
KeyName=Ref(self.keyname),
SecurityGroups=[Ref(worker_security_group)],
UserData=Base64(Join('', self.get_cloud_config()))))
worker_auto_scaling_group_name = 'asgWorker'
worker_asg = self.add_resource(
asg.AutoScalingGroup(
worker_auto_scaling_group_name,
AvailabilityZones=Ref(self.availability_zones),
Cooldown=300,
DesiredCapacity=Ref(self.worker_auto_scaling_desired),
HealthCheckGracePeriod=600,
HealthCheckType='ELB',
LaunchConfigurationName=Ref(worker_launch_config),
LoadBalancerNames=[Ref(worker_lb)],
MaxSize=Ref(self.worker_auto_scaling_max),
MinSize=Ref(self.worker_auto_scaling_min),
NotificationConfigurations=[
asg.NotificationConfigurations(
TopicARN=Ref(self.notification_topic_arn),
NotificationTypes=[
asg.EC2_INSTANCE_LAUNCH,
asg.EC2_INSTANCE_LAUNCH_ERROR,
asg.EC2_INSTANCE_TERMINATE,
asg.EC2_INSTANCE_TERMINATE_ERROR
])
],
VPCZoneIdentifier=Ref(self.private_subnets),
Tags=[asg.Tag('Name', 'Worker', True)]))
self.add_resource(
asg.ScheduledAction(
'schedWorkerAutoScalingStart',
AutoScalingGroupName=Ref(worker_asg),
DesiredCapacity=Ref(
self.worker_auto_scaling_schedule_start_capacity),
Recurrence=Ref(
self.worker_auto_scaling_schedule_start_recurrence)))
self.add_resource(
asg.ScheduledAction(
'schedWorkerAutoScalingEnd',
AutoScalingGroupName=Ref(worker_asg),
DesiredCapacity=Ref(
self.worker_auto_scaling_schedule_end_capacity),
Recurrence=Ref(
self.worker_auto_scaling_schedule_end_recurrence)))
return worker_asg
def add_scheduled_action(self, name, autoscaling_group, min_size, max_size,
desired_size, recurrence):
"""
Helper method creates a scheduled action for a given autoscaling group
@param name [string] Unique name for the scheduled action
@param name [AutoScalingGroup] Troposphere object containing the
autoscaling group
@param min_size [int] minimum size for the group
@param max_size [int] maximum size for the group
@param desired_size [int] the size resulting from this action
@param min_size [string] cron string scehdule to trigger this action
"""
return self.add_resource(
autoscaling.ScheduledAction(
name,
AutoScalingGroupName=Ref(autoscaling_group),
DesiredCapacity=desired_size,
Recurrence=recurrence,
MaxSize=max_size,
MinSize=min_size,
))
def create_auto_scaling_resources(self, app_server_security_group,
app_server_lb,
backward_compat_app_server_lb):
self.add_condition('BlueCondition', Equals('Blue', Ref(self.color)))
self.add_condition('GreenCondition', Equals('Green', Ref(self.color)))
blue_app_server_launch_config = self.add_resource(
asg.LaunchConfiguration(
'lcAppServerBlue',
Condition='BlueCondition',
ImageId=Ref(self.app_server_ami),
IamInstanceProfile=Ref(self.app_server_instance_profile),
InstanceType=Ref(self.app_server_instance_type),
KeyName=Ref(self.keyname),
SecurityGroups=[Ref(app_server_security_group)],
UserData=Base64(
Join(
'',
self.get_cloud_config(
self.blue_tile_distribution_endpoint)))))
blue_app_server_asg = self.add_resource(
asg.AutoScalingGroup(
'asgAppServerBlue',
AvailabilityZones=Ref(self.availability_zones),
Condition='BlueCondition',
Cooldown=300,
DesiredCapacity=Ref(self.app_server_auto_scaling_desired),
HealthCheckGracePeriod=600,
HealthCheckType='ELB',
LaunchConfigurationName=Ref(blue_app_server_launch_config),
LoadBalancerNames=[
Ref(app_server_lb),
Ref(backward_compat_app_server_lb)
],
MaxSize=Ref(self.app_server_auto_scaling_max),
MinSize=Ref(self.app_server_auto_scaling_min),
NotificationConfigurations=[
asg.NotificationConfigurations(
TopicARN=Ref(self.notification_topic_arn),
NotificationTypes=[
asg.EC2_INSTANCE_LAUNCH,
asg.EC2_INSTANCE_LAUNCH_ERROR,
asg.EC2_INSTANCE_TERMINATE,
asg.EC2_INSTANCE_TERMINATE_ERROR
])
],
VPCZoneIdentifier=Ref(self.private_subnets),
Tags=[asg.Tag('Name', 'AppServer', True)]))
self.add_resource(
asg.ScheduledAction(
'schedTileServerAutoScalingStartBlue',
AutoScalingGroupName=Ref(blue_app_server_asg),
Condition='BlueCondition',
DesiredCapacity=Ref(
self.app_server_auto_scaling_schedule_start_capacity),
Recurrence=Ref(
self.app_server_auto_scaling_schedule_start_recurrence)))
self.add_resource(
asg.ScheduledAction(
'schedTileServerAutoScalingEndBlue',
AutoScalingGroupName=Ref(blue_app_server_asg),
Condition='BlueCondition',
DesiredCapacity=Ref(
self.app_server_auto_scaling_schedule_end_capacity),
Recurrence=Ref(
self.app_server_auto_scaling_schedule_end_recurrence)))
green_app_server_launch_config = self.add_resource(
asg.LaunchConfiguration(
'lcAppServerGreen',
Condition='GreenCondition',
ImageId=Ref(self.app_server_ami),
IamInstanceProfile=Ref(self.app_server_instance_profile),
InstanceType=Ref(self.app_server_instance_type),
KeyName=Ref(self.keyname),
SecurityGroups=[Ref(app_server_security_group)],
UserData=Base64(
Join(
'',
self.get_cloud_config(
self.green_tile_distribution_endpoint)))))
green_app_server_asg = self.add_resource(
asg.AutoScalingGroup(
'asgAppServerGreen',
AvailabilityZones=Ref(self.availability_zones),
Condition='GreenCondition',
Cooldown=300,
DesiredCapacity=Ref(self.app_server_auto_scaling_desired),
HealthCheckGracePeriod=600,
HealthCheckType='ELB',
LaunchConfigurationName=Ref(green_app_server_launch_config),
LoadBalancerNames=[
Ref(app_server_lb),
Ref(backward_compat_app_server_lb)
],
MaxSize=Ref(self.app_server_auto_scaling_max),
MinSize=Ref(self.app_server_auto_scaling_min),
NotificationConfigurations=[
asg.NotificationConfigurations(
TopicARN=Ref(self.notification_topic_arn),
NotificationTypes=[
asg.EC2_INSTANCE_LAUNCH,
asg.EC2_INSTANCE_LAUNCH_ERROR,
asg.EC2_INSTANCE_TERMINATE,
asg.EC2_INSTANCE_TERMINATE_ERROR
])
],
VPCZoneIdentifier=Ref(self.private_subnets),
Tags=[asg.Tag('Name', 'AppServer', True)]))
self.add_resource(
asg.ScheduledAction(
'schedTileServerAutoScalingStartGreen',
AutoScalingGroupName=Ref(green_app_server_asg),
Condition='GreenCondition',
DesiredCapacity=Ref(
self.app_server_auto_scaling_schedule_start_capacity),
Recurrence=Ref(
self.app_server_auto_scaling_schedule_start_recurrence)))
self.add_resource(
asg.ScheduledAction(
'schedTileServerAutoScalingEndGreen',
AutoScalingGroupName=Ref(green_app_server_asg),
Condition='GreenCondition',
DesiredCapacity=Ref(
self.app_server_auto_scaling_schedule_end_capacity),
Recurrence=Ref(
self.app_server_auto_scaling_schedule_end_recurrence)))
