def get_instance_metadata(instance_name):
return autoscaling.Metadata(
cfn.Init({
'config':
cfn.InitConfig(
packages={'yum': {
'httpd': []
}},
files=cfn.InitFiles({
'/etc/cfn/cfn-hup.conf':
cfn.InitFile(content=Join('', [
'[main]\n',
'stack=',
Ref('AWS::StackName'),
'\n',
'region=',
Ref('AWS::Region'),
'\n',
]),
mode='000400',
owner='root',
group='root'),
'/etc/cfn/hooks.d/cfn-auto-reloader.conf':
cfn.InitFile(content=Join('', [
'[cfn-auto-reloader-hook]\n',
'triggers=post.update\n',
'path=Resources.',
instance_name,
'.Metadata.AWS::CloudFormation::Init\n',
'action=/opt/aws/bin/cfn-init -v ',
' --stack=',
Ref('AWS::StackName'),
' --resource=',
instance_name,
' --region=',
Ref('AWS::Region'),
'\n',
'runas=root\n',
]))
}),
services={
'sysvinit':
cfn.InitServices({
'httpd':
cfn.InitService(enabled=True, ensureRunning=True),
'cfn-hup':
cfn.InitService(
enabled=True,
ensureRunning=True,
files=[
'/etc/cfn/cfn-hup.conf',
'/etc/cfn/hooks.d/cfn-auto-reloader.conf'
])
})
})
}))
"action=/opt/aws/bin/cfn-init -v ",
" --stack",
Ref(AWS_STACK_NAME),
" --resource %s" %
container_instance_configuration_name,
" --region ",
Ref("AWS::Region"),
"\n",
"runas=root\n",
]))
}),
services=dict(sysvinit=cloudformation.InitServices({
'cfn-hup':
cloudformation.InitService(
enabled=True,
ensureRunning=True,
files=[
"/etc/cfn/cfn-hup.conf",
"/etc/cfn/hooks.d/cfn-auto-reloader.conf",
]),
})))))),
SecurityGroups=[Ref(instance_security_group)],
AssociatePublicIpAddress=True,
InstanceType=instance_type,
ImageId=FindInMap("ECSRegionMap", Ref(AWS_REGION), "AMI"),
IamInstanceProfile=Ref(container_instance_profile),
UserData=Base64(
Join('', [
"#!/bin/bash -xe\n",
"yum install -y aws-cfn-bootstrap\n",
"/opt/aws/bin/cfn-init -v ",
" --stack ",
Ref(RootStackName),
"/env/etc/rsyslog.d/20-somethin.conf",
],
),
mode="000644",
owner="root",
group="root",
authentication="DeployUserAuth",
)
}),
services={
"sysvinit":
cloudformation.InitServices({
"rsyslog":
cloudformation.InitService(
enabled=True,
ensureRunning=True,
files=["/etc/rsyslog.d/20-somethin.conf"],
)
})
},
)
}),
cloudformation.Authentication({
"DeployUserAuth":
cloudformation.AuthenticationBlock(
type="S3",
accessKeyId=Ref(DeployUserAccessKey),
secretKey=Ref(DeployUserSecretKey),
)
}),
),
def _add_ec2_auto_scaling(self):
instance_profile = self._add_instance_profile()
self.sg_alb = SecurityGroup(
"SecurityGroupAlb",
VpcId=Ref(self.vpc),
GroupDescription=Sub("${AWS::StackName}-alb"))
self.template.add_resource(self.sg_alb)
self.sg_hosts = SecurityGroup(
"SecurityGroupEc2Hosts",
SecurityGroupIngress=[{
'SourceSecurityGroupId': Ref(self.sg_alb),
'IpProtocol': -1
}],
VpcId=Ref(self.vpc),
GroupDescription=Sub("${AWS::StackName}-hosts"))
self.template.add_resource(self.sg_hosts)
sg_host_ingress = SecurityGroupIngress("SecurityEc2HostsIngress",
SourceSecurityGroupId=Ref(
self.sg_hosts),
IpProtocol="-1",
GroupId=Ref(self.sg_hosts),
FromPort="-1",
ToPort="-1")
self.template.add_resource(sg_host_ingress)
database_security_group = SecurityGroup(
"SecurityGroupDatabases",
SecurityGroupIngress=[{
'SourceSecurityGroupId': Ref(self.sg_hosts),
'IpProtocol': -1
}],
VpcId=Ref(self.vpc),
GroupDescription=Sub("${AWS::StackName}-databases"))
self.template.add_resource(database_security_group)
user_data = Base64(
Sub('\n'.join([
"#!/bin/bash", "yum update -y",
"yum install -y aws-cfn-bootstrap",
"/opt/aws/bin/cfn-init -v --region ${AWS::Region} --stack ${AWS::StackName} --resource LaunchConfiguration",
"/opt/aws/bin/cfn-signal -e $? --region ${AWS::Region} --stack ${AWS::StackName} --resource AutoScalingGroup",
"yum install -y https://s3.amazonaws.com/ec2-downloads-windows/SSMAgent/latest/linux_amd64/amazon-ssm-agent.rpm",
"systemctl enable amazon-ssm-agent",
"systemctl start amazon-ssm-agent", ""
])))
lc_metadata = cloudformation.Init({
"config":
cloudformation.InitConfig(
files=cloudformation.InitFiles({
"/etc/cfn/cfn-hup.conf":
cloudformation.InitFile(
content=Sub('\n'.join([
'[main]', 'stack=${AWS::StackId}',
'region=${AWS::Region}', ''
])),
mode='256', # TODO: Why 256
owner="root",
group="root"),
"/etc/cfn/hooks.d/cfn-auto-reloader.conf":
cloudformation.InitFile(content=Sub('\n'.join([
'[cfn-auto-reloader-hook]', 'triggers=post.update',
'path=Resources.ContainerInstances.Metadata.AWS::CloudFormation::Init',
'action=/opt/aws/bin/cfn-init -v --region ${AWS::Region} --stack ${AWS::StackName} --resource LaunchConfiguration',
''
])), )
}),
services={
"sysvinit":
cloudformation.InitServices({
"cfn-hup":
cloudformation.InitService(
enabled=True,
ensureRunning=True,
files=[
'/etc/cfn/cfn-hup.conf',
'/etc/cfn/hooks.d/cfn-auto-reloader.conf'
])
})
},
commands={
'01_add_instance_to_cluster': {
'command':
Sub('echo "ECS_CLUSTER=${Cluster}\nECS_RESERVED_MEMORY=256" > /etc/ecs/ecs.config'
)
}
})
})
launch_configuration = LaunchConfiguration(
'LaunchConfiguration',
UserData=user_data,
IamInstanceProfile=Ref(instance_profile),
SecurityGroups=[Ref(self.sg_hosts)],
InstanceType=Ref('InstanceType'),
ImageId=FindInMap("AWSRegionToAMI", Ref("AWS::Region"), "AMI"),
Metadata=lc_metadata,
KeyName=Ref(self.key_pair))
self.template.add_resource(launch_configuration)
# , PauseTime='PT15M', WaitOnResourceSignals=True, MaxBatchSize=1, MinInstancesInService=1)
up = AutoScalingRollingUpdate('AutoScalingRollingUpdate')
# TODO: clean up
subnets = list(self.private_subnets)
self.auto_scaling_group = AutoScalingGroup(
"AutoScalingGroup",
UpdatePolicy=up,
DesiredCapacity=self.desired_instances,
Tags=[{
'PropagateAtLaunch': True,
'Value': Sub('${AWS::StackName} - ECS Host'),
'Key': 'Name'
}],
MinSize=Ref('MinSize'),
MaxSize=Ref('MaxSize'),
VPCZoneIdentifier=[Ref(subnets.pop()),
Ref(subnets.pop())],
LaunchConfigurationName=Ref(launch_configuration),
CreationPolicy=CreationPolicy(ResourceSignal=ResourceSignal(
Timeout='PT15M')))
self.template.add_resource(self.auto_scaling_group)
self.cluster_scaling_policy = ScalingPolicy(
'AutoScalingPolicy',
AdjustmentType='ChangeInCapacity',
AutoScalingGroupName=Ref(self.auto_scaling_group),
Cooldown=300,
PolicyType='SimpleScaling',
ScalingAdjustment=1)
self.template.add_resource(self.cluster_scaling_policy)
def main():
"""
Create a ElastiCache Redis Node and EC2 Instance
"""
template = Template()
# Description
template.set_description(
'AWS CloudFormation Sample Template ElastiCache_Redis:'
'Sample template showing how to create an Amazon'
'ElastiCache Redis Cluster. **WARNING** This template'
'creates an Amazon EC2 Instance and an Amazon ElastiCache'
'Cluster. You will be billed for the AWS resources used'
'if you create a stack from this template.')
# Mappings
template.add_mapping('AWSInstanceType2Arch', {
't1.micro': {'Arch': 'PV64'},
't2.micro': {'Arch': 'HVM64'},
't2.small': {'Arch': 'HVM64'},
't2.medium': {'Arch': 'HVM64'},
'm1.small': {'Arch': 'PV64'},
'm1.medium': {'Arch': 'PV64'},
'm1.large': {'Arch': 'PV64'},
'm1.xlarge': {'Arch': 'PV64'},
'm2.xlarge': {'Arch': 'PV64'},
'm2.2xlarge': {'Arch': 'PV64'},
'm2.4xlarge': {'Arch': 'PV64'},
'm3.medium': {'Arch': 'HVM64'},
'm3.large': {'Arch': 'HVM64'},
'm3.xlarge': {'Arch': 'HVM64'},
'm3.2xlarge': {'Arch': 'HVM64'},
'c1.medium': {'Arch': 'PV64'},
'c1.xlarge': {'Arch': 'PV64'},
'c3.large': {'Arch': 'HVM64'},
'c3.xlarge': {'Arch': 'HVM64'},
'c3.2xlarge': {'Arch': 'HVM64'},
'c3.4xlarge': {'Arch': 'HVM64'},
'c3.8xlarge': {'Arch': 'HVM64'},
'c4.large': {'Arch': 'HVM64'},
'c4.xlarge': {'Arch': 'HVM64'},
'c4.2xlarge': {'Arch': 'HVM64'},
'c4.4xlarge': {'Arch': 'HVM64'},
'c4.8xlarge': {'Arch': 'HVM64'},
'g2.2xlarge': {'Arch': 'HVMG2'},
'r3.large': {'Arch': 'HVM64'},
'r3.xlarge': {'Arch': 'HVM64'},
'r3.2xlarge': {'Arch': 'HVM64'},
'r3.4xlarge': {'Arch': 'HVM64'},
'r3.8xlarge': {'Arch': 'HVM64'},
'i2.xlarge': {'Arch': 'HVM64'},
'i2.2xlarge': {'Arch': 'HVM64'},
'i2.4xlarge': {'Arch': 'HVM64'},
'i2.8xlarge': {'Arch': 'HVM64'},
'd2.xlarge': {'Arch': 'HVM64'},
'd2.2xlarge': {'Arch': 'HVM64'},
'd2.4xlarge': {'Arch': 'HVM64'},
'd2.8xlarge': {'Arch': 'HVM64'},
'hi1.4xlarge': {'Arch': 'HVM64'},
'hs1.8xlarge': {'Arch': 'HVM64'},
'cr1.8xlarge': {'Arch': 'HVM64'},
'cc2.8xlarge': {'Arch': 'HVM64'}
})
template.add_mapping('AWSRegionArch2AMI', {
'us-east-1': {'PV64': 'ami-0f4cfd64',
'HVM64': 'ami-0d4cfd66',
'HVMG2': 'ami-5b05ba30'},
'us-west-2': {'PV64': 'ami-d3c5d1e3',
'HVM64': 'ami-d5c5d1e5',
'HVMG2': 'ami-a9d6c099'},
'us-west-1': {'PV64': 'ami-85ea13c1',
'HVM64': 'ami-87ea13c3',
'HVMG2': 'ami-37827a73'},
'eu-west-1': {'PV64': 'ami-d6d18ea1',
'HVM64': 'ami-e4d18e93',
'HVMG2': 'ami-72a9f105'},
'eu-central-1': {'PV64': 'ami-a4b0b7b9',
'HVM64': 'ami-a6b0b7bb',
'HVMG2': 'ami-a6c9cfbb'},
'ap-northeast-1': {'PV64': 'ami-1a1b9f1a',
'HVM64': 'ami-1c1b9f1c',
'HVMG2': 'ami-f644c4f6'},
'ap-southeast-1': {'PV64': 'ami-d24b4280',
'HVM64': 'ami-d44b4286',
'HVMG2': 'ami-12b5bc40'},
'ap-southeast-2': {'PV64': 'ami-ef7b39d5',
'HVM64': 'ami-db7b39e1',
'HVMG2': 'ami-b3337e89'},
'sa-east-1': {'PV64': 'ami-5b098146',
'HVM64': 'ami-55098148',
'HVMG2': 'NOT_SUPPORTED'},
'cn-north-1': {'PV64': 'ami-bec45887',
'HVM64': 'ami-bcc45885',
'HVMG2': 'NOT_SUPPORTED'}
})
template.add_mapping('Region2Principal', {
'us-east-1': {'EC2Principal': 'ec2.amazonaws.com',
'OpsWorksPrincipal': 'opsworks.amazonaws.com'},
'us-west-2': {'EC2Principal': 'ec2.amazonaws.com',
'OpsWorksPrincipal': 'opsworks.amazonaws.com'},
'us-west-1': {'EC2Principal': 'ec2.amazonaws.com',
'OpsWorksPrincipal': 'opsworks.amazonaws.com'},
'eu-west-1': {'EC2Principal': 'ec2.amazonaws.com',
'OpsWorksPrincipal': 'opsworks.amazonaws.com'},
'ap-southeast-1': {'EC2Principal': 'ec2.amazonaws.com',
'OpsWorksPrincipal': 'opsworks.amazonaws.com'},
'ap-northeast-1': {'EC2Principal': 'ec2.amazonaws.com',
'OpsWorksPrincipal': 'opsworks.amazonaws.com'},
'ap-southeast-2': {'EC2Principal': 'ec2.amazonaws.com',
'OpsWorksPrincipal': 'opsworks.amazonaws.com'},
'sa-east-1': {'EC2Principal': 'ec2.amazonaws.com',
'OpsWorksPrincipal': 'opsworks.amazonaws.com'},
'cn-north-1': {'EC2Principal': 'ec2.amazonaws.com.cn',
'OpsWorksPrincipal': 'opsworks.amazonaws.com.cn'},
'eu-central-1': {'EC2Principal': 'ec2.amazonaws.com',
'OpsWorksPrincipal': 'opsworks.amazonaws.com'}
})
# Parameters
cachenodetype = template.add_parameter(Parameter(
'ClusterNodeType',
Description='The compute and memory capacity of the nodes in the Redis'
' Cluster',
Type='String',
Default='cache.m1.small',
AllowedValues=['cache.m1.small',
'cache.m1.large',
'cache.m1.xlarge',
'cache.m2.xlarge',
'cache.m2.2xlarge',
'cache.m2.4xlarge',
'cache.c1.xlarge'],
ConstraintDescription='must select a valid Cache Node type.',
))
instancetype = template.add_parameter(Parameter(
'InstanceType',
Description='WebServer EC2 instance type',
Type='String',
Default='t2.micro',
AllowedValues=['t1.micro',
't2.micro',
't2.small',
't2.medium',
'm1.small',
'm1.medium',
'm1.large',
'm1.xlarge',
'm2.xlarge',
'm2.2xlarge',
'm2.4xlarge',
'm3.medium',
'm3.large',
'm3.xlarge',
'm3.2xlarge',
'c1.medium',
'c1.xlarge',
'c3.large',
'c3.xlarge',
'c3.2xlarge',
'c3.4xlarge',
'c3.8xlarge',
'c4.large',
'c4.xlarge',
'c4.2xlarge',
'c4.4xlarge',
'c4.8xlarge',
'g2.2xlarge',
'r3.large',
'r3.xlarge',
'r3.2xlarge',
'r3.4xlarge',
'r3.8xlarge',
'i2.xlarge',
'i2.2xlarge',
'i2.4xlarge',
'i2.8xlarge',
'd2.xlarge',
'd2.2xlarge',
'd2.4xlarge',
'd2.8xlarge',
'hi1.4xlarge',
'hs1.8xlarge',
'cr1.8xlarge',
'cc2.8xlarge',
'cg1.4xlarge'],
ConstraintDescription='must be a valid EC2 instance type.',
))
keyname = template.add_parameter(Parameter(
'KeyName',
Description='Name of an existing EC2 KeyPair to enable SSH access'
' to the instance',
Type='AWS::EC2::KeyPair::KeyName',
ConstraintDescription='must be the name of an existing EC2 KeyPair.',
))
sshlocation = template.add_parameter(Parameter(
'SSHLocation',
Description='The IP address range that can be used to SSH to'
' the EC2 instances',
Type='String',
MinLength='9',
MaxLength='18',
Default='0.0.0.0/0',
AllowedPattern='(\\d{1,3})\\.(\\d{1,3})\\.'
'(\\d{1,3})\\.(\\d{1,3})/(\\d{1,2})',
ConstraintDescription='must be a valid IP CIDR range of the'
' form x.x.x.x/x.'
))
# Resources
webserverrole = template.add_resource(iam.Role(
'WebServerRole',
AssumeRolePolicyDocument=PolicyDocument(
Statement=[
Statement(
Effect=Allow,
Action=[AssumeRole],
Principal=Principal('Service',
[FindInMap('Region2Principal',
Ref('AWS::Region'),
'EC2Principal')]),
)
]
),
Path='/',
))
template.add_resource(iam.PolicyType(
'WebServerRolePolicy',
PolicyName='WebServerRole',
PolicyDocument=PolicyDocument(
Statement=[awacs.aws.Statement(
Action=[awacs.aws.Action("elasticache",
"DescribeCacheClusters")],
Resource=["*"],
Effect=awacs.aws.Allow
)]
),
Roles=[Ref(webserverrole)],
))
webserverinstanceprofile = template.add_resource(iam.InstanceProfile(
'WebServerInstanceProfile',
Path='/',
Roles=[Ref(webserverrole)],
))
webserversg = template.add_resource(ec2.SecurityGroup(
'WebServerSecurityGroup',
GroupDescription='Enable HTTP and SSH access',
SecurityGroupIngress=[
ec2.SecurityGroupRule(
IpProtocol='tcp',
FromPort='22',
ToPort='22',
CidrIp=Ref(sshlocation),
),
ec2.SecurityGroupRule(
IpProtocol='tcp',
FromPort='80',
ToPort='80',
CidrIp='0.0.0.0/0',
)
]
))
webserverinstance = template.add_resource(ec2.Instance(
'WebServerInstance',
Metadata=cloudformation.Metadata(
cloudformation.Init({
'config': cloudformation.InitConfig(
packages={
'yum': {
'httpd': [],
'php': [],
'php-devel': [],
'gcc': [],
'make': []
}
},
files=cloudformation.InitFiles({
'/var/www/html/index.php': cloudformation.InitFile(
content=Join('', [
'<?php\n',
'echo \"<h1>AWS CloudFormation sample'
' application for Amazon ElastiCache'
' Redis Cluster</h1>\";\n',
'\n',
'$cluster_config = json_decode('
'file_get_contents(\'/tmp/cacheclusterconfig\''
'), true);\n',
'$endpoint = $cluster_config[\'CacheClusters'
'\'][0][\'CacheNodes\'][0][\'Endpoint\'][\'Add'
'ress\'];\n',
'$port = $cluster_config[\'CacheClusters\'][0]'
'[\'CacheNodes\'][0][\'Endpoint\'][\'Port\'];'
'\n',
'\n',
'echo \"<p>Connecting to Redis Cache Cluster '
'node \'{$endpoint}\' on port {$port}</p>\";'
'\n',
'\n',
'$redis=new Redis();\n',
'$redis->connect($endpoint, $port);\n',
'$redis->set(\'testkey\', \'Hello World!\');'
'\n',
'$return = $redis->get(\'testkey\');\n',
'\n',
'echo \"<p>Retrieved value: $return</p>\";'
'\n',
'?>\n'
]),
mode='000644',
owner='apache',
group='apache'
),
'/etc/cron.d/get_cluster_config':
cloudformation.InitFile(
content='*/5 * * * * root'
' /usr/local/bin/get_cluster_config',
mode='000644',
owner='root',
group='root'
),
'/usr/local/bin/get_cluster_config':
cloudformation.InitFile(
content=Join('', [
'#! /bin/bash\n',
'aws elasticache describe-cache-clusters ',
' --cache-cluster-id ',
Ref('RedisCluster'),
' --show-cache-node-info'
' --region ', Ref('AWS::Region'),
' > /tmp/cacheclusterconfig\n'
]),
mode='000755',
owner='root',
group='root'
),
'/usr/local/bin/install_phpredis':
cloudformation.InitFile(
content=Join('', [
'#! /bin/bash\n',
'cd /tmp\n',
'wget https://github.com/nicolasff/'
'phpredis/zipball/master -O phpredis.zip'
'\n',
'unzip phpredis.zip\n',
'cd nicolasff-phpredis-*\n',
'phpize\n',
'./configure\n',
'make && make install\n',
'touch /etc/php.d/redis.ini\n',
'echo extension=redis.so > /etc/php.d/'
'redis.ini\n'
]),
mode='000755',
owner='root',
group='root'
),
'/etc/cfn/cfn-hup.conf': cloudformation.InitFile(
content=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':
cloudformation.InitFile(
content=Join('', [
'[cfn-auto-reloader-hook]\n',
'triggers=post.update\n',
'path=Resources.WebServerInstance.Metadata'
'.AWS::CloudFormation::Init\n',
'action=/opt/aws/bin/cfn-init -v ',
' --stack ', Ref('AWS::StackName'),
' --resource WebServerInstance ',
' --region ', Ref('AWS::Region'),
'\n',
'runas=root\n'
]),
# Why doesn't the Amazon template have this?
# mode='000400',
# owner='root',
# group='root'
),
}),
commands={
'01-install_phpredis': {
'command': '/usr/local/bin/install_phpredis'
},
'02-get-cluster-config': {
'command': '/usr/local/bin/get_cluster_config'
}
},
services={
"sysvinit": cloudformation.InitServices({
"httpd": cloudformation.InitService(
enabled=True,
ensureRunning=True,
),
"cfn-hup": cloudformation.InitService(
enabled=True,
ensureRunning=True,
files=['/etc/cfn/cfn-hup.conf',
'/etc/cfn/hooks.d/'
'cfn-auto-reloader.conf']
),
}),
},
)
})
),
ImageId=FindInMap('AWSRegionArch2AMI', Ref('AWS::Region'),
FindInMap('AWSInstanceType2Arch',
Ref(instancetype), 'Arch')),
InstanceType=Ref(instancetype),
SecurityGroups=[Ref(webserversg)],
KeyName=Ref(keyname),
IamInstanceProfile=Ref(webserverinstanceprofile),
UserData=Base64(Join('', [
'#!/bin/bash -xe\n',
'yum update -y aws-cfn-bootstrap\n',
'# Setup the PHP sample application\n',
'/opt/aws/bin/cfn-init -v ',
' --stack ', Ref('AWS::StackName'),
' --resource WebServerInstance ',
' --region ', Ref('AWS::Region'), '\n',
'# Signal the status of cfn-init\n',
'/opt/aws/bin/cfn-signal -e $? ',
' --stack ', Ref('AWS::StackName'),
' --resource WebServerInstance ',
' --region ', Ref('AWS::Region'), '\n'
])),
CreationPolicy=CreationPolicy(
ResourceSignal=ResourceSignal(Timeout='PT15M')
),
Tags=Tags(Application=Ref('AWS::StackId'),
Details='Created using Troposhpere')
))
redisclustersg = template.add_resource(elasticache.SecurityGroup(
'RedisClusterSecurityGroup',
Description='Lock the cluster down',
))
template.add_resource(elasticache.SecurityGroupIngress(
'RedisClusterSecurityGroupIngress',
CacheSecurityGroupName=Ref(redisclustersg),
EC2SecurityGroupName=Ref(webserversg),
))
template.add_resource(elasticache.CacheCluster(
'RedisCluster',
Engine='redis',
CacheNodeType=Ref(cachenodetype),
NumCacheNodes='1',
CacheSecurityGroupNames=[Ref(redisclustersg)],
))
# Outputs
template.add_output([
Output(
'WebsiteURL',
Description='Application URL',
Value=Join('', [
'http://',
GetAtt(webserverinstance, 'PublicDnsName'),
])
)
])
# Print CloudFormation Template
print(template.to_json())
def _launch_config(self):
return LaunchConfiguration(
"LaunchConfiguration",
Metadata=autoscaling.Metadata(
cloudformation.Init({
"config":
cloudformation.InitConfig(files=cloudformation.InitFiles({
'/etc/cfn/cfn-hup.conf':
cloudformation.InitFile(content=Join(
'', [
'[main]\n',
'stack=',
self.ref_stack_id,
'\n',
'region=',
self.ref_region,
'\n',
]),
mode='000400',
owner='root',
group='root'),
'/etc/cfn/hooks.d/cfn-auto-reloader.conf':
cloudformation.InitFile(
content=Join('', [
'[cfn-auto-reloader-hook]\n',
'triggers=post.update\n',
'path=Resources.WebServerInstance.\
Metadata.AWS::CloudFormation::Init\n',
'action=/opt/aws/bin/cfn-init -v ',
' --stack ',
self.ref_stack_name,
' --resource WebServerInstance ',
' --region ',
self.ref_region,
'\n',
'runas=root\n',
]))
}),
services={
"sysvinit":
cloudformation.InitServices({
"rsyslog":
cloudformation.
InitService(
enabled=True,
ensureRunning=True,
files=[
'/etc/rsyslog.d/20-somethin.conf'
])
})
})
})),
UserData=Base64(Join('', self.config['app_instance_user_data'])),
ImageId=FindInMap("RegionMap", Ref("AWS::Region"), "AMI"),
KeyName=self.config['sshkey'],
IamInstanceProfile=Ref(self.instance_iam_role_instance_profile),
BlockDeviceMappings=[
ec2.BlockDeviceMapping(DeviceName=self.config['device_name'],
Ebs=ec2.EBSBlockDevice(VolumeSize="8")),
],
SecurityGroups=self.config['app_sg'],
InstanceType=self.config['instance_type'],
)
def generate_stack_template():
template = Template()
generate_description(template)
generate_version(template)
# ---Parameters------------------------------------------------------------
param_vpc_id = Parameter(
'VpcIdentifer',
Description=
'The identity of the VPC (vpc-abcdwxyz) in which this stack shall be created.',
Type='AWS::EC2::VPC::Id',
)
template.add_parameter(param_vpc_id)
param_vpc_security_group = Parameter(
'VpcSecurityGroup',
Description=
'The security group (sg-abcdwxyz) to apply to the resources created by this stack.',
Type='AWS::EC2::SecurityGroup::Id',
)
template.add_parameter(param_vpc_security_group)
param_webserver_instance_subnet_id = Parameter(
'VpcSubnetIdentifer',
Description=
'The identity of the public subnet (subnet-abcdwxyz) in which the web server shall be created.',
Type='AWS::EC2::Subnet::Id',
)
template.add_parameter(param_webserver_instance_subnet_id)
param_keyname = Parameter(
'PemKeyName',
Description=
'Name of an existing EC2 KeyPair file (.pem) to use to create EC2 instances',
Type='AWS::EC2::KeyPair::KeyName')
template.add_parameter(param_keyname)
param_instance_type = Parameter(
'EC2InstanceType',
Description=
'EC2 instance type, reference this parameter to insure consistency',
Type='String',
Default=
't2.medium', # Prices from (2015-12-03) (Windows, us-west (North CA))
AllowedValues=[ # Source : https://aws.amazon.com/ec2/pricing/
't2.small', # $0.044/hour
't2.micro', # $0.022/hour
't2.medium', # $0.088/hour
't2.large', # $0.166/hour
'm3.medium', # $0.140/hour
'm3.large', # $0.28/hour
'c4.large' # $0.221/hour
],
ConstraintDescription='Must be a valid EC2 instance type')
template.add_parameter(param_instance_type)
#---Mappings---------------------------------------------------------------
mapping_environment_attribute_map = template.add_mapping(
'EnvironmentAttributeMap', {
'ap-southeast-1': {
'WebServerAmi': 'ami-1ddc0b7e'
},
'ap-southeast-2': {
'WebServerAmi': 'ami-0c95b86f'
},
'us-east-1': {
'WebServerAmi': 'ami-a4827dc9'
},
'us-west-1': {
'WebServerAmi': 'ami-f5f41398'
}
})
# ---Resources-------------------------------------------------------------
ref_region = Ref('AWS::Region')
ref_stack_name = Ref('AWS::StackName')
# Create the metadata for the server instance.
name_web_server = 'WebServer'
webserver_instance_metadata = cloudformation.Metadata(
cloudformation.Init({
'config':
cloudformation.InitConfig(
packages={'yum': {
'nginx': [],
'git': []
}},
files=cloudformation.InitFiles({
# cfn-hup.conf initialization
'/etc/cfn/authorapp.conf':
cloudformation.InitFile(content=Join(
'', [
'server {',
'\n',
' listen 3030 ssl http2;',
'\n',
' root /var/www/authorapp;',
'\n',
'\n',
' ssl_certificate /vagrant/ssl/ca.crt;',
'\n',
' ssl_certificate_key /vagrant/ssl/ca.key;',
'\n',
'\n',
' location / {',
'\n',
' }',
'\n',
'\n',
' location /api {',
'\n',
' proxy_pass http://10.50.50.1:3000;',
'\n',
' }',
'\n',
'}',
'\n',
]),
mode='000400',
owner='root',
group='root'),
}),
services=dict(sysvinit=cloudformation.InitServices({
# start cfn-hup service -
# required for CloudFormation stack update
'cfn-hup':
cloudformation.InitService(
enabled=True,
ensureRunning=True,
files=[
'/etc/cfn/cfn-hup.conf',
'/etc/cfn/hooks.d/cfn-auto-reloader.conf'
]),
# Disable sendmail service - not required.
'sendmail':
cloudformation.InitService(enabled=False,
ensureRunning=False)
})))
}))
resource_web_server = ec2.Instance(
name_web_server,
Metadata=webserver_instance_metadata,
ImageId=FindInMap('EnvironmentAttributeMap', ref_region,
'WebServerAmi'),
InstanceType=Ref(param_instance_type),
KeyName=Ref(param_keyname),
NetworkInterfaces=[
ec2.NetworkInterfaceProperty(
AssociatePublicIpAddress=str(True),
DeleteOnTermination=str(True),
Description='Network interface for web server',
DeviceIndex=str(0),
GroupSet=[Ref(param_vpc_security_group)],
SubnetId=Ref(param_webserver_instance_subnet_id),
)
],
Tags=Tags(Name=name_web_server, VPC=Ref(param_vpc_id)),
UserData=Base64(
Join('', [
'#!/bin/bash -xe\n', 'yum update -y aws-cfn-bootstrap\n',
'yum update -y', '\n'
'/opt/aws/bin/cfn-init --verbose ', ' --stack ',
ref_stack_name,
' --resource %s ' % name_web_server, ' --region ', ref_region,
'\n', '/opt/aws/bin/cfn-signal --exit-code $? ', ' --stack ',
ref_stack_name, ' --resource ', name_web_server, '\n'
])))
template.add_resource(resource_web_server)
template.add_output(
Output('WebServer',
Description='Web Server',
Value=GetAtt(name_web_server, 'PublicIp')))
return template
' --resource %(INSTANCE_NAME)s'
' --configsets Update'
' --region ${AWS::Region}'
'\n'
'runas=root\n' % \
{'INSTANCE_NAME': instance_resource_name}
),
},
},
services={
'sysvinit': cloudformation.InitServices(
{
'cfn-hup': cloudformation.InitService(
enabled=True,
ensureRunning=True,
files=[
'/etc/cfn/cfn-hup.conf',
'/etc/cfn/hooks.d/cfn-auto-reloader.conf',
]
),
}
)
},
),
# InstallPackages=cloudformation.InitConfig(
# packages={
# 'yum': {
# 'python27-devel': [],
# },
#
# },
# services={'sysvinit': cloudformation.InitServices(
Ref('AWS::StackName'),
' --resource=NatInstance',
' --region=',
Ref('AWS::Region'),
'\n',
'runas=root\n',
]))
}),
services={
'sysvinit':
cfn.InitServices({
'httpd':
cfn.InitService(enabled=True, ensureRunning=True),
'cfn-hup':
cfn.InitService(
enabled=True,
ensureRunning=True,
files=[
'/etc/cfn/cfn-hup.conf',
'/etc/cfn/hooks.d/cfn-auto-reloader.conf'
])
})
})
}))
# Create NAT instance
# This node acts as
# 1. public facing entity,
# 2. forwards web traffic from Kafka and Rubis webserver
# 3. Aggregator: Consumes from Response Time and Metrics topics and produce to Aggregate topic
nat_instance = t.add_resource(
def generate_stack_template():
template = Template()
generate_description(template)
generate_version(template)
# ---Parameters------------------------------------------------------------
param_vpc_id = Parameter(
'VpcIdentifer',
Description=
'The identity of the VPC (vpc-abcdwxyz) in which this stack shall be created.',
Type='AWS::EC2::VPC::Id',
)
template.add_parameter(param_vpc_id)
param_vpc_cidr_block = Parameter(
'VpcCidrBlock',
Description=
'The CIDR block of the VPC (w.x.y.z/n) in which this stack shall be created.',
Type='String',
Default='10.0.0.0/16')
template.add_parameter(param_vpc_cidr_block)
param_database_instance_subnet_id = Parameter(
'VpcSubnetIdentifer',
Description=
'The identity of the private subnet (subnet-abcdwxyz) in which the database server shall be created.',
Type='AWS::EC2::Subnet::Id',
)
template.add_parameter(param_database_instance_subnet_id)
param_keyname = Parameter(
'PemKeyName',
Description=
'Name of an existing EC2 KeyPair file (.pem) to use to create EC2 instances',
Type='AWS::EC2::KeyPair::KeyName')
template.add_parameter(param_keyname)
param_instance_type = Parameter(
'EC2InstanceType',
Description=
'EC2 instance type, reference this parameter to insure consistency',
Type='String',
Default=
't2.medium', # Prices from (2015-12-03) (Windows, us-west (North CA))
AllowedValues=[ # Source : https://aws.amazon.com/ec2/pricing/
't2.small', # $0.044/hour
't2.micro', # $0.022/hour
't2.medium', # $0.088/hour
't2.large', # $0.166/hour
'm3.medium', # $0.140/hour
'm3.large', # $0.28/hour
'c4.large' # $0.221/hour
],
ConstraintDescription='Must be a valid EC2 instance type')
template.add_parameter(param_instance_type)
param_s3_bucket = Parameter(
'S3Bucket',
Description='The bucket in which applicable content can be found.',
Type='String',
Default='author-it-deployment-test-us-east-1')
template.add_parameter(param_s3_bucket)
param_s3_key = Parameter(
'S3Key',
Description=
'The key within the bucket in which relevant files are located.',
Type='String',
Default='source/database/postgresql/single')
template.add_parameter(param_s3_key)
param_database_admin_password = Parameter(
'PostgresAdminPassword',
Description='The password to be used by user postgres.',
Type='String',
NoEcho=True)
template.add_parameter(param_database_admin_password)
#---Mappings---------------------------------------------------------------
mapping_environment_attribute_map = template.add_mapping(
'EnvironmentAttributeMap', {
'ap-southeast-1': {
'DatabaseServerAmi': 'ami-1ddc0b7e'
},
'ap-southeast-2': {
'DatabaseServerAmi': 'ami-0c95b86f'
},
'us-east-1': {
'DatabaseServerAmi': 'ami-a4827dc9'
},
'us-west-1': {
'DatabaseServerAmi': 'ami-f5f41398'
}
})
# ---Resources-------------------------------------------------------------
ref_stack_id = Ref('AWS::StackId')
ref_region = Ref('AWS::Region')
ref_stack_name = Ref('AWS::StackName')
path_database_admin_script = 'usr/ec2-user/postgresql/set_admin_password.sql'
name_database_server_wait_handle = 'DatabaseServerWaitHandle'
cmd_postgresql_initdb = dict(command='service postgresql-95 initdb')
cmd_start_postgresql_service = dict(command='service postgresql-95 start')
cmd_set_postgres_user_password = dict(command='psql -U postgres -f %s' %
path_database_admin_script)
cmd_start_postgresql_on_startup = dict(command='chkconfig postgresql on')
cmd_signal_success = dict(command='cfn-signal --exit-code $?')
# Create an instance of AWS::IAM::Role for the instance.
# This allows:
# - Access to S3 bucket content.
# - Stack updates
resource_instance_role = template.add_resource(
iam.Role('InstanceRole',
AssumeRolePolicyDocument=Policy(Statement=[
Statement(Action=[AssumeRole],
Effect=Allow,
Principal=Principal('Service',
['ec2.amazonaws.com']))
]),
Path='/'))
# Create the S3 policy and attach it to the role.
template.add_resource(
iam.PolicyType(
'InstanceS3DownloadPolicy',
PolicyName='S3Download',
PolicyDocument={
'Statement': [{
'Effect':
'Allow',
'Action': ['s3:GetObject'],
'Resource':
Join('', ['arn:aws:s3:::',
Ref(param_s3_bucket), '/*'])
}, {
'Effect':
'Allow',
'Action':
['cloudformation:DescribeStacks', 'ec2:DescribeInstances'],
'Resource':
'*'
}]
},
Roles=[Ref(resource_instance_role)]))
# Create the CloudFormation stack update policy and attach it to the role.
template.add_resource(
iam.PolicyType('InstanceStackUpdatePolicy',
PolicyName='StackUpdate',
PolicyDocument={
'Statement': [{
"Effect": "Allow",
"Action": "Update:*",
"Resource": "*"
}]
},
Roles=[Ref(resource_instance_role)]))
# Create the AWS::IAM::InstanceProfile from the role for reference in the
# database server instance definition.
resource_instance_profile = template.add_resource(
iam.InstanceProfile('InstanceProfile',
Path='/',
Roles=[Ref(resource_instance_role)]))
# Create a security group for the postgresql instance.
# This must be internal to the VPC only.
name_security_group_database = 'VpcDatabaseSecurityGroup'
resource_database_security_group = ec2.SecurityGroup(
name_security_group_database,
GroupDescription=Join(
' ', ['Security group for VPC database',
Ref(param_vpc_id)]),
Tags=Tags(Name=name_security_group_database),
VpcId=Ref(param_vpc_id))
template.add_resource(resource_database_security_group)
template.add_output(
Output('SecurityGroupForDatabase',
Description='Security group created for database in VPC.',
Value=Ref(resource_database_security_group)))
# Add ingress rule from VPC to database security group for database traffic.
database_port = 5432
ssh_port = 22
template.add_resource(
ec2.SecurityGroupIngress('DatabaseSecurityGroupDatabaseIngress',
CidrIp=Ref(param_vpc_cidr_block),
FromPort=str(database_port),
GroupId=Ref(resource_database_security_group),
IpProtocol='tcp',
ToPort=str(database_port)))
# Add ingress rule from VPC to database security group for ssh traffic.
ssh_port = 22
template.add_resource(
ec2.SecurityGroupIngress('DatabaseSecurityGroupSshIngress',
CidrIp=Ref(param_vpc_cidr_block),
FromPort=str(ssh_port),
GroupId=Ref(resource_database_security_group),
IpProtocol='tcp',
ToPort=str(ssh_port)))
# Create the metadata for the database instance.
name_database_server = 'DatabaseServer'
database_instance_metadata = cloudformation.Metadata(
cloudformation.Init({
'config':
cloudformation.InitConfig(
packages={
'rpm': {
'postgresql':
'https://download.postgresql.org/pub/repos/yum/9.5/redhat/rhel-6-x86_64/pgdg-ami201503-95-9.5-2.noarch.rpm'
},
'yum': {
'postgresql95': [],
'postgresql95-libs': [],
'postgresql95-server': [],
'postgresql95-devel': [],
'postgresql95-contrib': [],
'postgresql95-docs': []
}
},
files=cloudformation.InitFiles({
# cfn-hup.conf initialization
'/etc/cfn/cfn-hup.conf':
cloudformation.InitFile(content=Join(
'', [
'[main]\n', 'stack=', ref_stack_id, '\n',
'region=', ref_region, '\n', 'interval=2', '\n',
'verbose=true', '\n'
]),
mode='000400',
owner='root',
group='root'),
# cfn-auto-reloader.conf initialization
'/etc/cfn/cfn-auto-reloader.conf':
cloudformation.InitFile(
content=Join(
'',
[
'[cfn-auto-reloader-hook]\n',
'triggers=post.update\n',
'path=Resources.%s.Metadata.AWS::CloudFormation::Init\n'
% name_database_server,
'action=cfn-init.exe ',
' --verbose '
' --stack ',
ref_stack_name,
' --resource %s ' %
name_database_server, # resource that defines the Metadata
' --region ',
ref_region,
'\n'
]),
mode='000400',
owner='root',
group='root'),
#
# pg_hba.conf retrieval from S3
'/var/lib/pgsql9/data/pg_hba.conf':
cloudformation.InitFile(
source=Join(
'/',
[
# Join('', ['https://s3-', ref_region, '.', 'amazonaws.com']),
'https://s3.amazonaws.com',
Ref(param_s3_bucket),
Ref(param_s3_key),
'conf'
'pg_hba.conf'
]),
mode='000400',
owner='root',
group='root'),
# postgresql.conf retrieval from S3
'/var/lib/pgsql9/data/postgresql.conf':
cloudformation.InitFile(
source=Join(
'/',
[
#Join('', ['https://s3-', ref_region, '.', 'amazonaws.com']),
'https://s3.amazonaws.com',
Ref(param_s3_bucket),
Ref(param_s3_key),
'conf'
'postgresql.conf'
]),
mode='000400',
owner='root',
group='root'),
# pg_ident.conf retrieval from S3
'/var/lib/pgsql9/data/pg_ident.conf':
cloudformation.InitFile(
source=Join(
'/',
[
#Join('', ['https://s3-', ref_region, '.', 'amazonaws.com']),
'https://s3.amazonaws.com',
Ref(param_s3_bucket),
Ref(param_s3_key),
'conf'
'pg_ident.conf'
]),
mode='000400',
owner='root',
group='root'),
# script to set postgresql admin password.
# (admin user = '******')
path_database_admin_script:
cloudformation.InitFile(
source=Join('', [
'ALTER USER postgres WITH PASSWORD ',
Ref(param_database_admin_password), ';', '\n'
]))
}),
commands={
'10-postgresql_initdb':
cmd_postgresql_initdb,
'20-start_postgresql_service':
cmd_start_postgresql_service,
'30-set-postgres-user-password':
cmd_set_postgres_user_password,
'40-start-postgresql-on-startup':
cmd_start_postgresql_on_startup,
#'99-signal-success': cmd_signal_success
},
services=dict(sysvinit=cloudformation.InitServices({
# start cfn-hup service -
# required for CloudFormation stack update
'cfn-hup':
cloudformation.InitService(
enabled=True,
ensureRunning=True,
files=[
'/etc/cfn/cfn-hup.conf',
'/etc/cfn/hooks.d/cfn-auto-reloader.conf'
]),
# start postgresql service
'postgresql-9.5':
cloudformation.InitService(enabled=True,
ensureRunning=True),
# Disable sendmail service - not required.
'sendmail':
cloudformation.InitService(enabled=False,
ensureRunning=False)
})))
}),
cloudformation.Authentication({
'S3AccessCredentials':
cloudformation.AuthenticationBlock(
buckets=[Ref(param_s3_bucket)],
roleName=Ref(resource_instance_role),
type='S3')
}))
# Add a wait handle to receive the completion signal.
#resource_database_server_wait_handle = template.add_resource(
# cloudformation.WaitConditionHandle(
# name_database_server_wait_handle
# )
# )
#template.add_resource(
# cloudformation.WaitCondition(
# 'DatabaseServerWaitCondition',
# DependsOn=name_database_server,
# Handle=Ref(resource_database_server_wait_handle),
# Timeout=300,
# )
#)
resource_database_server = ec2.Instance(
name_database_server,
DependsOn=name_security_group_database,
IamInstanceProfile=Ref(resource_instance_profile),
Metadata=database_instance_metadata,
ImageId=FindInMap('EnvironmentAttributeMap', ref_region,
'DatabaseServerAmi'),
InstanceType=Ref(param_instance_type),
KeyName=Ref(param_keyname),
SecurityGroupIds=[Ref(resource_database_security_group)],
SubnetId=Ref(param_database_instance_subnet_id),
Tags=Tags(Name=name_database_server, VPC=Ref(param_vpc_id)),
UserData=Base64(
Join('', [
'#!/bin/bash -xe\n', 'yum update -y aws-cfn-bootstrap\n',
'/opt/aws/bin/cfn-init --verbose ', ' --stack ',
ref_stack_name, ' --resource DatabaseServer ', ' --region ',
ref_region, '\n', '/opt/aws/bin/cfn-signal --exit-code $? ',
' --stack ', ref_stack_name, ' --resource ',
name_database_server, '\n'
])))
template.add_resource(resource_database_server)
template.add_output(
Output('DatabaseServer',
Description='PostgreSQL single instance database server',
Value=Ref(resource_database_server)))
return template
content=Join("\n", ["This is a", "test file"]),
mode="000755",
owner="root",
group="root",
context=cloudformation.InitFileContext(
{"security_group_id": Ref(security_group)}
),
)
}
),
services={
"sysvinit": cloudformation.InitServices(
{
"service1": cloudformation.InitService(
enabled=True,
ensureRunning=True,
files=["/etc/service1/somefile.conf"],
)
}
)
},
)
}
),
UserData=Base64(
Join(
"\n",
[
"#!/bin/bash",
'echo "Upgrade started at $(date)"',
"apt-get update",
files=cloudformation.InitFiles({
"file1":
cloudformation.InitFile(
content=Join('\n', ["This is a", "test file"]),
mode="000755",
owner="root",
group="root",
context=cloudformation.InitFileContext(
{"security_group_id": Ref(security_group)}))
}),
services={
"sysvinit":
cloudformation.InitServices({
"service1":
cloudformation.InitService(
enabled=True,
ensureRunning=True,
files=['/etc/service1/somefile.conf'])
})
})
}),
UserData=Base64(
Join('\n', [
"#!/bin/bash",
"echo \"Upgrade started at $(date)\"",
"apt-get update",
"apt-get -y upgrade",
"echo \"Upgrade complete at $(date)\"",
]))))
# Define our AutoScaling Group, using the AWS compatability layer.
