def _get_autoscaling_group_parameters(self, chain_context, launch_config_name):
config = {
'AvailabilityZones': Ref("AvailabilityZones"), # Not really required in this case (yet)
'LaunchConfigurationName': Ref(launch_config_name),
'MinSize': Ref("MinSize"),
'MaxSize': Ref("MaxSize"),
'VPCZoneIdentifier': Ref("PrivateSubnets"),
'Tags': [ASTag('Name', self.name, True)],
}
if META_TARGET_GROUP_NAME in chain_context.metadata:
config['TargetGroupARNs'] = [Ref(chain_context.metadata[META_TARGET_GROUP_NAME])]
if self.use_update_policy:
update_policy = UpdatePolicy(
AutoScalingReplacingUpdate=AutoScalingReplacingUpdate(
WillReplace=True,
),
AutoScalingRollingUpdate=AutoScalingRollingUpdate(
PauseTime='PT5M',
MinInstancesInService="1",
MaxBatchSize='1',
WaitOnResourceSignals=True
)
)
config['UpdatePolicy'] = update_policy
return config
def create_autoscaling_group(self):
t = self.template
t.add_resource(
autoscaling.LaunchConfiguration(
'EmpireControllerLaunchConfig',
IamInstanceProfile=GetAtt("EmpireControllerProfile", "Arn"),
ImageId=FindInMap('AmiMap', Ref("AWS::Region"),
Ref("ImageName")),
BlockDeviceMappings=self.build_block_device(),
InstanceType=Ref("InstanceType"),
KeyName=Ref("SshKeyName"),
UserData=self.generate_user_data(),
SecurityGroups=[Ref("DefaultSG"),
Ref(CLUSTER_SG_NAME)]))
t.add_resource(
autoscaling.AutoScalingGroup(
'EmpireControllerAutoscalingGroup',
AvailabilityZones=Ref("AvailabilityZones"),
LaunchConfigurationName=Ref("EmpireControllerLaunchConfig"),
MinSize=Ref("MinHosts"),
MaxSize=Ref("MaxHosts"),
VPCZoneIdentifier=Ref("PrivateSubnets"),
LoadBalancerNames=[
Ref("EmpireControllerLoadBalancer"),
],
Tags=[ASTag('Name', 'empire_controller', True)]))
def get_autoscaling_group_parameters(self, launch_config_name, elb_name):
return {
'AvailabilityZones': Ref("AvailabilityZones"),
'LaunchConfigurationName': Ref(launch_config_name),
'MinSize': Ref("MinSize"),
'MaxSize': Ref("MaxSize"),
'VPCZoneIdentifier': Ref("PrivateSubnets"),
'LoadBalancerNames': If("CreateELB", [Ref(elb_name), ], []),
'Tags': [ASTag('Name', self.name, True)],
}
def create_autoscaling_group(self):
t = self.template
t.add_resource(
autoscaling.LaunchConfiguration(
'BastionLaunchConfig',
AssociatePublicIpAddress=True,
ImageId=FindInMap(
'AmiMap', Ref("AWS::Region"), Ref("ImageName")),
InstanceType=Ref("InstanceType"),
KeyName=Ref("SshKeyName"),
UserData=self.generate_user_data(),
SecurityGroups=[Ref("DefaultSG"), Ref(CLUSTER_SG_NAME)]))
t.add_resource(
autoscaling.AutoScalingGroup(
'BastionAutoscalingGroup',
AvailabilityZones=Ref("AvailabilityZones"),
LaunchConfigurationName=Ref("BastionLaunchConfig"),
MinSize=Ref("MinSize"),
MaxSize=Ref("MaxSize"),
VPCZoneIdentifier=Ref("PublicSubnets"),
Tags=[ASTag('Name', 'bastion', True)]))
def create_autoscaling_group(self):
name = "%sASG" % self.name
sg_name = CLUSTER_SG_NAME % self.name
launch_config = "%sLaunchConfig" % name
elb_name = ELB_NAME % self.name
t = self.template
t.add_resource(autoscaling.LaunchConfiguration(
launch_config,
ImageId=FindInMap('AmiMap', Ref("AWS::Region"),
Ref('ImageName')),
InstanceType=Ref("InstanceType"),
KeyName=Ref("SshKeyName"),
SecurityGroups=[Ref("DefaultSG"), Ref(sg_name)]))
t.add_resource(autoscaling.AutoScalingGroup(
name,
AvailabilityZones=Ref("AvailabilityZones"),
LaunchConfigurationName=Ref(launch_config),
MinSize=Ref("MinSize"),
MaxSize=Ref("MaxSize"),
VPCZoneIdentifier=Ref("PrivateSubnets"),
LoadBalancerNames=If("CreateELB", [Ref(elb_name), ], []),
Tags=[ASTag('Name', self.name, True)]))
def add_autoscaling_group(self):
t = self.template
self.asgLaunchConfig = t.add_resource(
LaunchConfiguration(
'ASGLaunchConfig',
ImageId='ami-0b33d91d', #TODO Mapping for different regions
InstanceMonitoring=False,
AssociatePublicIpAddress=False,
InstanceType="t2.micro",
SecurityGroups=[Ref(self.asgSg)],
KeyName=Ref(self.keyPairParam),
UserData=Base64(
Join(
"",
[
"#!/bin/bash -xe\n",
"yum update -y aws-cfn-bootstrap\n",
"/opt/aws/bin/cfn-init -v ",
" --stack ",
{
"Ref": "AWS::StackName"
},
" --resource LaunchConfig ",
" --configsets wordpress_install ",
" --region ",
{
"Ref": "AWS::Region"
},
"\n",
# "/opt/aws/bin/cfn-signal -e $? ",
# " --stack ", { "Ref" : "AWS::StackName" },
# " --resource WebServerGroup ",
# " --region ", { "Ref" : "AWS::Region" }, "\n"
])),
Metadata=cfn.Metadata(
cfn.Init(
cfn.InitConfigSets(wordpress_install=[
'install_cfn', 'install_chefdk', "install_chef",
"install_wordpress", "run_chef"
]),
install_cfn=cfn.InitConfig(
# Starts cfn-hup daemon which detects changes in metadata
# and runs user-specified actions when a change is detected.
# This allows configuration updates through UpdateStack.
# The cfn-hup.conf file stores the name of the stack and
# the AWS credentials that the cfn-hup daemon targets.
# The cfn-hup daemon parses and loads each file in the /etc/cfn/hooks.d directory.
files={
"/etc/cfn/cfn-hup.conf": {
"content": {
"Fn::Join": [
"",
[
"[main]\n", "stack=", {
"Ref": "AWS::StackId"
}, "\n", "region=", {
"Ref": "AWS::Region"
}, "\n"
]
]
},
"mode": "000400",
"owner": "root",
"group": "root"
},
"/etc/cfn/hooks.d/cfn-auto-reloader.conf": {
"content": {
"Fn::Join": [
"",
[
"[cfn-auto-reloader-hook]\n",
"triggers=post.update\n",
"path=Resources.LaunchConfig.Metadata.AWS::CloudFormation::Init\n",
"action=/opt/aws/bin/cfn-init -v ",
" --stack ", {
"Ref": "AWS::StackName"
},
" --resource LaunchConfig ",
" --configsets wordpress_install ",
" --region ", {
"Ref": "AWS::Region"
}, "\n"
]
]
},
"mode": "000400",
"owner": "root",
"group": "root"
}
},
services={
"sysvinit": {
"cfn-hup": {
"enabled":
"true",
"ensureRunning":
"true",
"files": [
"/etc/cfn/cfn-hup.conf",
"/etc/cfn/hooks.d/cfn-auto-reloader.conf"
]
}
}
}),
install_chefdk=cfn.InitConfig(
packages={
"rpm": {
"chefdk":
"https://opscode-omnibus-packages.s3.amazonaws.com/el/6/x86_64/chefdk-0.2.0-2.el6.x86_64.rpm"
}
}),
install_chef=cfn.InitConfig(
sources={
# Set up a local Chef repository on the instance.
"/var/chef/chef-repo":
"http://github.com/opscode/chef-repo/tarball/master"
},
files={
# Chef installation file.
"/tmp/install.sh": {
"source":
"https://www.opscode.com/chef/install.sh",
"mode": "000400",
"owner": "root",
"group": "root"
},
# Knife configuration file.
"/var/chef/chef-repo/.chef/knife.rb": {
"content": {
"Fn::Join": [
"",
[
"cookbook_path [ '/var/chef/chef-repo/cookbooks' ]\n",
"node_path [ '/var/chef/chef-repo/nodes' ]\n"
]
]
},
"mode": "000400",
"owner": "root",
"group": "root"
},
# Chef client configuration file.
"/var/chef/chef-repo/.chef/client.rb": {
"content": {
"Fn::Join": [
"",
[
"cookbook_path [ '/var/chef/chef-repo/cookbooks' ]\n",
"node_path [ '/var/chef/chef-repo/nodes' ]\n"
]
]
},
"mode": "000400",
"owner": "root",
"group": "root"
}
},
commands={
# make the /var/chef directory readable, run the
# Chef installation, and then start Chef local mode
# by using the client.rb file that was created.
# The commands are run in alphanumeric order.
"01_make_chef_readable": {
"command": "chmod +rx /var/chef"
},
"02_install_chef": {
"command": "bash /tmp/install.sh",
"cwd": "/var/chef"
},
"03_create_node_list": {
"command":
"chef-client -z -c /var/chef/chef-repo/.chef/client.rb",
"cwd": "/var/chef/chef-repo",
"env": {
"HOME": "/var/chef"
}
}
}),
install_wordpress=cfn.InitConfig(
# Installs WordPress by using a WordPress cookbook.
files={
# knife.rb and client.rb files are overwritten to
# point to the cookbooks that are required to install WordPress.
"/var/chef/chef-repo/.chef/knife.rb": {
"content": {
"Fn::Join": [
"",
[
"cookbook_path [ '/var/chef/chef-repo/cookbooks/wordpress/berks-cookbooks' ]\n",
"node_path [ '/var/chef/chef-repo/nodes' ]\n"
]
]
},
"mode": "000400",
"owner": "root",
"group": "root"
},
"/var/chef/chef-repo/.chef/client.rb": {
"content": {
"Fn::Join": [
"",
[
"cookbook_path [ '/var/chef/chef-repo/cookbooks/wordpress/berks-cookbooks' ]\n",
"node_path [ '/var/chef/chef-repo/nodes' ]\n"
]
]
},
"mode": "000400",
"owner": "root",
"group": "root"
},
# Specify the Amazon RDS database instance as the WordPress database
"/var/chef/chef-repo/cookbooks/wordpress/attributes/aws_rds_config.rb":
{
"content": {
"Fn::Join": [
"",
[
"normal['wordpress']['db']['pass'] = '******'\n",
"normal['wordpress']['db']['user'] = '******'\n",
"normal['wordpress']['db']['host'] = '",
GetAtt(self.rds,
"Endpoint.Address"),
"'\n",
"normal['wordpress']['db']['name'] = '",
Ref(self.dbNameParam), "'\n"
]
]
},
"mode": "000400",
"owner": "root",
"group": "root"
}
},
commands={
"01_get_cookbook": {
"command":
"knife cookbook site download wordpress",
"cwd": "/var/chef/chef-repo",
"env": {
"HOME": "/var/chef"
}
},
"02_unpack_cookbook": {
"command":
"tar xvfz /var/chef/chef-repo/wordpress*",
"cwd": "/var/chef/chef-repo/cookbooks"
},
"03_init_berkshelf": {
"command":
"berks init /var/chef/chef-repo/cookbooks/wordpress --skip-vagrant --skip-git",
"cwd":
"/var/chef/chef-repo/cookbooks/wordpress",
"env": {
"HOME": "/var/chef"
}
},
"04_vendorize_berkshelf": {
"command": "berks vendor",
"cwd":
"/var/chef/chef-repo/cookbooks/wordpress",
"env": {
"HOME": "/var/chef"
}
},
"05_configure_node_run_list": {
"command":
"knife node run_list add -z `knife node list -z` recipe[wordpress]",
"cwd": "/var/chef/chef-repo",
"env": {
"HOME": "/var/chef"
}
}
}),
run_chef=cfn.InitConfig(
commands={
"01_run_chef_client": {
"command":
"chef-client -z -c /var/chef/chef-repo/.chef/client.rb",
"cwd": "/var/chef/chef-repo",
"env": {
"HOME": "/var/chef"
}
}
})))))
webserverSubnetIds = [
self.sceptreUserData['subnets']['privateWebAZ1Id'],
self.sceptreUserData['subnets']['privateWebAZ2Id'],
self.sceptreUserData['subnets']['privateWebAZ3Id']
]
self.webServerASG = t.add_resource(
AutoScalingGroup(
'WebServerASG',
LaunchConfigurationName=Ref(self.asgLaunchConfig),
LoadBalancerNames=[Ref(self.elb)],
MinSize='1',
DesiredCapacity='2',
Cooldown='1',
MaxSize='5',
UpdatePolicy=UpdatePolicy(
AutoScalingRollingUpdate=AutoScalingRollingUpdate(
MinInstancesInService="1")),
VPCZoneIdentifier=webserverSubnetIds,
Tags=[
ASTag('Contact', Ref(self.ownerEmailParam), True),
ASTag('Name', Join("", [self.namePrefix, 'ASG']), True)
]))
return 0