def create_elb(self):
lb = elb.LoadBalancer(self,
guid('ELB-'),
vpc=self.vpc,
cross_zone=True,
internet_facing=True,
health_check=elb.HealthCheck(port=80))
lb.add_target(self.auto_scaling_group)
lb.add_listener(external_port=80)
return lb
def __init__(self, scope: core.Construct, id: str, **kwargs) -> None:
super().__init__(scope, id, **kwargs)
# The code that defines your stack goes here
vpc = ec2.Vpc(
self, "MyVpc",
max_azs=2
)
sg = ec2.SecurityGroup(
self, "SG",
description='Allow ssh access to ec2 instances',
vpc=vpc
)
sg.add_ingress_rule(
peer=ec2.Peer.any_ipv4(),
connection=ec2.Port.tcp(22)
)
asg = autoscaling.AutoScalingGroup(
self, "ASG",
vpc=vpc,
instance_type=ec2.InstanceType.of(
ec2.InstanceClass.BURSTABLE2, ec2.InstanceSize.MICRO
),
machine_image=ec2.AmazonLinuxImage(),
desired_capacity=3,
)
lb = elb.LoadBalancer(
self, "LB",
vpc=vpc,
internet_facing=True,
health_check={"port": 80}
)
lb.add_target(asg)
ec2instance = ec2.Instance(
self, "EC2INSTANCE",
vpc=vpc,
instance_type=ec2.InstanceType.of(
ec2.InstanceClass.BURSTABLE2, ec2.InstanceSize.MICRO
),
machine_image=ec2.AmazonLinuxImage(),
vpc_subnets={ 'subnet_type': ec2.SubnetType.PUBLIC },
security_group=sg,
key_name="MyNVKeyPair"
)
listener = lb.add_listener(external_port=80)
listener.connections.allow_default_port_from_any_ipv4("Open to the world")
def __init__(
self,
scope: core.Construct,
id: str,
vpc: aws_ec2.IVpc,
instance_port: int,
internet_facing: bool,
subnets: typing.List[aws_ec2.ISubnet],
targets: typing.List[aws_elb.ILoadBalancerTarget],
ssl_certificate_id: typing.Optional[str],
allow_connections_from: typing.Optional[typing.List[
aws_ec2.IConnectable]] = None,
) -> None:
super().__init__(scope, id)
self.elb = aws_elb.LoadBalancer(
scope=self,
id='elb',
vpc=vpc,
internet_facing=internet_facing,
subnet_selection=aws_ec2.SubnetSelection(subnets=subnets),
targets=targets,
health_check=aws_elb.HealthCheck(
port=instance_port,
path='/healthz',
protocol=aws_elb.LoadBalancingProtocol.HTTP,
healthy_threshold=2,
interval=core.Duration.seconds(amount=10),
timeout=core.Duration.seconds(amount=5),
unhealthy_threshold=3,
),
)
self.elb.add_listener(
external_port=80,
external_protocol=aws_elb.LoadBalancingProtocol.HTTP,
internal_port=instance_port,
internal_protocol=aws_elb.LoadBalancingProtocol.HTTP,
allow_connections_from=allow_connections_from,
)
if ssl_certificate_id:
self.elb.add_listener(
external_port=443,
external_protocol=aws_elb.LoadBalancingProtocol.HTTPS,
internal_port=instance_port,
internal_protocol=aws_elb.LoadBalancingProtocol.HTTP,
allow_connections_from=allow_connections_from,
ssl_certificate_id=ssl_certificate_id,
)
def __init__(self, scope: core.Construct, construct_id: str, **kwargs) -> None:
super().__init__(scope, construct_id, **kwargs)
# The code that defines your stack goes here
# creating a machine image
ami = ec2.MachineImage.latest_amazon_linux(
cpu_type=ec2.AmazonLinuxCpuType.X86_64,
edition=ec2.AmazonLinuxEdition.STANDARD,
generation=ec2.AmazonLinuxGeneration.AMAZON_LINUX,
storage=ec2.AmazonLinuxStorage.GENERAL_PURPOSE,
)
# creating vpc
vpc = ec2.Vpc.from_lookup(self, "vpc", is_default=True)
# creating security group
skull_sg = ec2.SecurityGroup(
self,
"myec2sg",
vpc=vpc,
security_group_name="skull-sg",
description="sg for ec2 cdk example",
allow_all_outbound=True,
)
# creating autoscaling group
asg = autoscaling.AutoScalingGroup(
self,
"autoscaling",
instance_type=ec2.InstanceType("t2.micro"),
machine_image=ami,
vpc=vpc,
security_group=skull_sg,
)
# creating load balancer
load_balancer = elb.LoadBalancer(
self, "loadbalancer", internet_facing=True, vpc=vpc
)
# adding listeners to load balancer
listener = load_balancer.add_listener(
external_port=80, external_protocol=elb.LoadBalancingProtocol.HTTP
)
# add targets for load balancer such as the autoscaling group created above
load_balancer.add_target(asg)
def __init__(self, app: core.App, id: str, **kwargs) -> None:
super().__init__(app, id, **kwargs)
vpc = ec2.Vpc(self, "VPC")
asg = autoscaling.AutoScalingGroup(
self, "ASG",
vpc=vpc,
instance_type=ec2.InstanceType.of(
ec2.InstanceClass.BURSTABLE2, ec2.InstanceSize.MICRO
),
machine_image=ec2.AmazonLinuxImage(),
)
lb = elb.LoadBalancer(
self, "LB",
vpc=vpc,
internet_facing=True,
health_check={"port": 80}
)
lb.add_target(asg)
listener = lb.add_listener(external_port=80)
listener.connections.allow_default_port_from_any_ipv4("Open to the world")
def __init__(self, scope: core.Construct, id: str, **kwargs) -> None:
super().__init__(scope, id, tags=default_tags, **kwargs)
# VPC
vpc = ec2.Vpc(
self,
'k8s-real-hard-way-vpc',
cidr=vpc_cidr,
subnet_configuration=[
ec2.SubnetConfiguration(
cidr_mask=24,
name='Public',
subnet_type=ec2.SubnetType.PUBLIC,
),
ec2.SubnetConfiguration(
cidr_mask=24,
name='Private',
subnet_type=ec2.SubnetType.PRIVATE
)
]
)
# Ubuntu AMI from dict mapping
ubuntu_ami = ec2.GenericLinuxImage(
ami_map={
aws_region: ami_region_map.get(aws_region)
}
)
# Get HostedZone ID from HostedZone Name
zoneid = route53.HostedZone.from_lookup(
self,
"k8s-real-hard-way-zone",
domain_name=zone_fqdn
)
zoneid_str = zoneid.hosted_zone_id
# IAM Policy for Bastion Instance Profile
iampolicystatement = iam.PolicyStatement(
actions=[
"ec2:CreateRoute",
"ec2:CreateTags",
"ec2:DescribeAutoScalingGroups",
"autoscaling:DescribeAutoScalingInstances",
"ec2:DescribeRegions",
"ec2:DescribeRouteTables",
"ec2:DescribeInstances",
"ec2:DescribeTags",
"elasticloadbalancing:DescribeLoadBalancers",
"route53:ListHostedZonesByName"
],
effect=iam.Effect.ALLOW,
resources=[
"*"
]
)
iampolicystatement_route53 = iam.PolicyStatement(
actions=[
"route53:ChangeResourceRecordSets"
],
effect=iam.Effect.ALLOW,
resources=[
"arn:aws:route53:::" + zoneid_str[1:]
]
)
# BASTION HOST
# AutoScalingGroup
bastion = autoscaling.AutoScalingGroup(
self,
"bastion",
vpc=vpc,
min_capacity=bastion_min_capacity,
max_capacity=bastion_max_capacity,
desired_capacity=bastion_desired_capacity,
instance_type=ec2.InstanceType(bastion_instance_type),
machine_image=ec2.AmazonLinuxImage(),
key_name=ssh_key_pair,
vpc_subnets=ec2.SubnetSelection(
subnet_name='Private'
),
associate_public_ip_address=False
)
bastion.add_to_role_policy(iampolicystatement)
bastion.add_to_role_policy(iampolicystatement_route53)
cfn_bastion = bastion.node.default_child
cfn_bastion.auto_scaling_group_name = "bastion"
cfn_bastion_lc = bastion.node.find_child('LaunchConfig')
cfn_bastion_lc.launch_configuration_name = "bastion"
# Classic LoadBalancer
bastion_lb = elb.LoadBalancer(
self,
"bastion-lb",
vpc=vpc,
internet_facing=True,
health_check=elb.HealthCheck(
port=22,
protocol=elb.LoadBalancingProtocol.TCP
)
)
cfn_bastion_lb = bastion_lb.node.default_child
cfn_bastion_lb.load_balancer_name = "bastion"
bastion_lb.add_listener(
external_port=22,
external_protocol=elb.LoadBalancingProtocol.TCP,
allow_connections_from=[ec2.Peer().ipv4(myipv4)]
)
bastion_lb.add_target(
target=bastion
)
# UserData
bastion.add_user_data(
"sudo yum update",
"sudo yum upgrade -y",
"sudo yum install jq tmux -y",
"wget https://gist.githubusercontent.com/dmytro/3984680/raw/1e25a9766b2f21d7a8e901492bbf9db672e0c871/ssh-multi.sh -O /home/ec2-user/tmux-multi.sh",
"chmod +x /home/ec2-user/tmux-multi.sh",
"wget https://pkg.cfssl.org/R1.2/cfssl_linux-amd64 && chmod +x cfssl_linux-amd64 && sudo mv cfssl_linux-amd64 /usr/local/bin/cfssl && sudo chown ec2-user:ec2-user /usr/local/bin/cfssl",
"wget https://pkg.cfssl.org/R1.2/cfssljson_linux-amd64 && chmod +x cfssljson_linux-amd64 && sudo mv cfssljson_linux-amd64 /usr/local/bin/cfssljson && sudo chown ec2-user:ec2-user /usr/local/bin/cfssljson",
"curl -LO https://storage.googleapis.com/kubernetes-release/release/$(curl -s https://storage.googleapis.com/kubernetes-release/release/stable.txt)/bin/linux/amd64/kubectl && chmod +x ./kubectl && sudo mv kubectl /usr/local/bin/kubectl && chown ec2-user:ec2-user /usr/local/bin/kubectl",
"sudo hostname " + "bastion" + "." + zone_fqdn,
"echo \"AWS_DEFAULT_REGION=$(curl -s http://169.254.169.254/latest/dynamic/instance-identity/document | grep region | awk -F\\\" '{print $4}')\" | sudo tee -a /etc/environment",
"echo \"HOSTEDZONE_NAME=" + zone_fqdn + "\" | sudo tee -a /etc/environment"
)
# Route53 Alias Target for LB
route53_target = route53_targets.ClassicLoadBalancerTarget(bastion_lb)
# Route53 Record for Bastion Host LB
route53_bastion = route53.ARecord(
self,
"bastion-lb-route53",
target=route53.RecordTarget.from_alias(route53_target),
zone=zoneid,
comment="Bastion Host LB",
record_name='bastion'
)
# ETCD
# AutoScalingGroup
etcd = autoscaling.AutoScalingGroup(
self,
"etcd",
vpc=vpc,
min_capacity=etcd_min_capacity,
max_capacity=etcd_max_capacity,
desired_capacity=etcd_desired_capacity,
instance_type=ec2.InstanceType(etcd_instance_type),
machine_image=ubuntu_ami,
key_name=ssh_key_pair,
vpc_subnets=ec2.SubnetSelection(
subnet_name='Private'
),
associate_public_ip_address=False
)
etcd.add_to_role_policy(iampolicystatement)
cfn_etcd = etcd.node.default_child
cfn_etcd.auto_scaling_group_name = "etcd"
cfn_etcd_lc = etcd.node.find_child('LaunchConfig')
cfn_etcd_lc.launch_configuration_name = "etcd"
# UserData
etcd.add_user_data(
"sudo apt-get update",
"sudo apt-get upgrade -y",
"sudo apt-get install python3-pip -y",
"sudo pip3 install awscli",
"echo \"AWS_DEFAULT_REGION=$(curl -s http://169.254.169.254/latest/dynamic/instance-identity/document | grep region | awk -F\\\" '{print $4}')\" | sudo tee -a /etc/environment",
"echo \"HOSTEDZONE_NAME=" + zone_fqdn + "\" | sudo tee -a /etc/environment",
"echo \"INTERNAL_IP=$(curl -s http://169.254.169.254/1.0/meta-data/local-ipv4)\" | sudo tee -a /etc/environment"
)
# KUBERNETES MASTER Load Balancer
# Public Load Balancer (for remote kubectl access)
master_public_lb = elb.LoadBalancer(
self,
"k8s-real-hard-way-master-public-lb",
vpc=vpc,
internet_facing=True,
health_check=elb.HealthCheck(
port=6443,
protocol=elb.LoadBalancingProtocol.TCP
)
)
master_public_lb.add_listener(
external_port=6443,
external_protocol=elb.LoadBalancingProtocol.TCP,
allow_connections_from=[ec2.Peer().ipv4(myipv4)]
)
cfn_master_public_lb = master_public_lb.node.default_child
cfn_master_public_lb.load_balancer_name = "master-public"
# Private Load Balancer (fronting kube-apiservers)
master_private_lb = elb.LoadBalancer(
self,
"k8s-real-hard-way-master-private-lb",
vpc=vpc,
internet_facing=False,
health_check=elb.HealthCheck(
port=6443,
protocol=elb.LoadBalancingProtocol.TCP
)
)
master_private_lb.add_listener(
external_port=6443,
external_protocol=elb.LoadBalancingProtocol.TCP,
allow_connections_from=[]
)
cfn_master_private_lb = master_private_lb.node.default_child
cfn_master_private_lb.load_balancer_name = "master-private"
# AutoScalingGroup
master = autoscaling.AutoScalingGroup(
self,
"master",
vpc=vpc,
min_capacity=master_min_capacity,
max_capacity=master_max_capacity,
desired_capacity=master_desired_capacity,
instance_type=ec2.InstanceType(master_instance_type),
machine_image=ubuntu_ami,
key_name=ssh_key_pair,
vpc_subnets=ec2.SubnetSelection(
subnet_name='Private'
),
associate_public_ip_address=False
)
master.add_to_role_policy(iampolicystatement)
cfn_master = master.node.default_child
cfn_master.auto_scaling_group_name = "master"
cfn_master_lc = master.node.find_child('LaunchConfig')
cfn_master_lc.launch_configuration_name = "master"
# Add ASG as target for LBs
master_public_lb.add_target(
target=master
)
master_private_lb.add_target(
target=master
)
# UserData
master.add_user_data(
"sudo apt-get update",
"sudo apt-get upgrade -y",
"sudo apt-get install python3-pip -y",
"sudo pip3 install awscli",
"echo \"AWS_DEFAULT_REGION=$(curl -s http://169.254.169.254/latest/dynamic/instance-identity/document | grep region | awk -F\\\" '{print $4}')\" | sudo tee -a /etc/environment",
"echo \"HOSTEDZONE_NAME=" + zone_fqdn + "\" | sudo tee -a /etc/environment",
"echo \"INTERNAL_IP=$(curl -s http://169.254.169.254/1.0/meta-data/local-ipv4)\" | sudo tee -a /etc/environment"
)
# KUBERNETES WORKER
worker = autoscaling.AutoScalingGroup(
self,
"worker",
vpc=vpc,
min_capacity=worker_min_capacity,
max_capacity=worker_max_capacity,
desired_capacity=worker_desired_capacity,
instance_type=ec2.InstanceType(worker_instance_type),
machine_image=ubuntu_ami,
key_name=ssh_key_pair,
vpc_subnets=ec2.SubnetSelection(
subnet_name='Private'
),
associate_public_ip_address=False
)
worker.add_to_role_policy(iampolicystatement)
cfn_worker = worker.node.default_child
cfn_worker.auto_scaling_group_name = "worker"
cfn_worker_lc = worker.node.find_child('LaunchConfig')
cfn_worker_lc.launch_configuration_name = "worker"
# UserData
worker.add_user_data(
"sudo apt-get update",
"sudo apt-get upgrade -y",
"sudo apt-get install python3-pip -y",
"sudo pip3 install awscli",
"RANDOM_NUMBER=$(shuf -i 10-250 -n 1)",
"echo \"POD_CIDR=" + pod_cidr + ".$RANDOM_NUMBER.0/24\" | sudo tee -a /etc/environment",
"echo \"AWS_DEFAULT_REGION=$(curl -s http://169.254.169.254/latest/dynamic/instance-identity/document | grep region | awk -F\\\" '{print $4}')\" | sudo tee -a /etc/environment",
"echo \"HOSTEDZONE_NAME=" + zone_fqdn + "\" | sudo tee -a /etc/environment",
"echo \"INTERNAL_IP=$(curl -s http://169.254.169.254/1.0/meta-data/local-ipv4)\" | sudo tee -a /etc/environment"
)
# SecurityGroups
# Bastion LB
bastion_lb_sg = ec2.SecurityGroup(
self,
"bastion-lb-sg",
vpc=vpc,
allow_all_outbound=True,
description="Bastion-LB",
)
# Kubernetes Master Public LB
master_public_lb_sg = ec2.SecurityGroup(
self,
"k8s-real-hard-way-master-public-lb-sg",
vpc=vpc,
allow_all_outbound=True,
description="K8s MasterPublicLB",
)
# Kubernetes Master Private LB
master_private_lb_sg = ec2.SecurityGroup(
self,
"k8s-real-hard-way-master-private-lb-sg",
vpc=vpc,
allow_all_outbound=True,
description="K8s MasterPrivateLB",
)
# Bastion
bastion_security_group = ec2.SecurityGroup(
self,
"bastion-security-group",
vpc=vpc,
allow_all_outbound=True,
description="Bastion"
)
# etcd
etcd_security_group = ec2.SecurityGroup(
self,
"etcd-security-group",
vpc=vpc,
allow_all_outbound=True,
description="etcd"
)
# Kubernetes Master
master_securiy_group = ec2.SecurityGroup(
self,
"master-security-group",
vpc=vpc,
allow_all_outbound=True,
description="K8s Master",
)
# Kubernetes Worker
worker_security_group = ec2.SecurityGroup(
self,
"worker-security-group",
vpc=vpc,
allow_all_outbound=True,
description="K8s Worker"
)
# SecurityGroup Rules
# Bastion LB
bastion_lb_sg.add_ingress_rule(
peer=ec2.Peer().ipv4(myipv4),
connection=ec2.Port.tcp(22),
description="SSH: Workstation - MasterPublicLB"
)
# Master Public LB
master_public_lb_sg.add_ingress_rule(
peer=ec2.Peer().ipv4(myipv4),
connection=ec2.Port.tcp(6443),
description="kubectl: Workstation - MasterPublicLB"
)
master_public_lb_sg.add_ingress_rule(
peer=master_securiy_group,
connection=ec2.Port.tcp(6443),
description="kubeapi: Workers - MasterPublicLB"
)
# Master Private LB
# master_private_lb_sg.add_ingress_rule(
# peer=master_securiy_group,
# connection=ec2.Port.tcp(6443),
# description="kubectl: Masters - MasterPrivateLB"
# )
# master_private_lb_sg.add_ingress_rule(
# peer=worker_security_group,
# connection=ec2.Port.tcp(6443),
# description="kubeapi: Workers - MasterPrivateLB"
# )
master_private_lb_sg.add_ingress_rule(
peer=ec2.Peer.any_ipv4(),
connection=ec2.Port.tcp(6443),
description="kubectl: ALL - MasterPrivateLB"
)
# Bastion Host
bastion_security_group.add_ingress_rule(
peer=bastion_lb_sg,
connection=ec2.Port.tcp(22),
description="SSH: Bastion-LB - Bastio"
)
# etcd
etcd_security_group.add_ingress_rule(
peer=bastion_security_group,
connection=ec2.Port.tcp(22),
description="SSH: Bastion - Etcds"
)
etcd_security_group.add_ingress_rule(
peer=master_securiy_group,
connection=ec2.Port.tcp_range(start_port=2379, end_port=2380),
description="etcd: Masters - Etcds"
)
etcd_security_group.add_ingress_rule(
peer=etcd_security_group,
connection=ec2.Port.tcp_range(start_port=2379, end_port=2380),
description="etcd: Etcds - Etcds"
)
# K8s-Master
master_securiy_group.add_ingress_rule(
peer=worker_security_group,
connection=ec2.Port.all_traffic(),
description="ALL: Workers - Masters"
)
master_securiy_group.add_ingress_rule(
peer=bastion_security_group,
connection=ec2.Port.tcp(22),
description="SSH: Bastion - Masters"
)
master_securiy_group.add_ingress_rule(
peer=bastion_security_group,
connection=ec2.Port.tcp(6443),
description="kubectl: Bastion - Masters"
)
master_securiy_group.add_ingress_rule(
peer=master_public_lb_sg,
connection=ec2.Port.tcp(6443),
description="kubectl: MasterPublicLB - Masters"
)
master_securiy_group.add_ingress_rule(
peer=master_private_lb_sg,
connection=ec2.Port.tcp(6443),
description="kubectl: MasterPrivateLB - Masters"
)
master_securiy_group.add_ingress_rule(
peer=worker_security_group,
connection=ec2.Port.tcp(6443),
description="kubectl: Workers - Masters"
)
# K8s-Worker
worker_security_group.add_ingress_rule(
peer=master_securiy_group,
connection=ec2.Port.all_traffic(),
description="ALL: Master - Workers"
)
worker_security_group.add_ingress_rule(
peer=bastion_security_group,
connection=ec2.Port.tcp(22),
description="SSH: Bastion - Workers"
)
worker_security_group.add_ingress_rule(
peer=bastion_security_group,
connection=ec2.Port.tcp(6443),
description="kubectl: Bastion - Workers"
)
# Add SecurityGroups to resources
bastion.add_security_group(bastion_security_group)
etcd.add_security_group(etcd_security_group)
master.add_security_group(master_securiy_group)
worker.add_security_group(worker_security_group)
cfn_master_public_lb.security_groups = [
master_public_lb_sg.security_group_id
]
cfn_master_private_lb.security_groups = [
master_private_lb_sg.security_group_id
]
# Add specific Tags to resources
core.Tag.add(
bastion,
apply_to_launched_instances=True,
key='Name',
value=tag_project + '-bastion'
)
core.Tag.add(
bastion_lb,
apply_to_launched_instances=True,
key='Name',
value=tag_project + '-bastion-lb'
)
core.Tag.add(
master_public_lb,
apply_to_launched_instances=True,
key='Name',
value=tag_project + '-master-lb'
)
core.Tag.add(
etcd,
apply_to_launched_instances=True,
key='Name',
value=tag_project + '-etcd'
)
core.Tag.add(
master,
apply_to_launched_instances=True,
key='Name',
value=tag_project + '-k8s-master'
)
core.Tag.add(
worker,
apply_to_launched_instances=True,
key='Name',
value=tag_project + '-k8s-worker'
)
for subnet in vpc.private_subnets:
core.Tag.add(
subnet,
key='Attribute',
value='private'
)
for subnet in vpc.public_subnets:
core.Tag.add(
subnet,
key='Attribute',
value='public'
)
def __init__(self, scope: core.Construct, id: str, **kwargs) -> None:
super().__init__(scope, id, **kwargs)
#return userdata script
def get_userdata():
with open('userdata.sh') as userdata:
script = userdata.read()
return script
#get public subnet
def get_public_subnet():
public_subnet = covid_free_vpc.select_subnets(
subnet_type=ec2_stacker.SubnetType.PUBLIC)
return public_subnet.subnets[0]
def get_web_sg():
return covid_free_sg
#Generate 4 EC2 Instances
def generate_instances(count=4):
amazon_linux_2 = ec2_stacker.GenericLinuxImage(
{"us-east-1": "ami-0fc61db8544a617ed"})
ec2_objects = []
for i in range(count):
ec2_instnace = ec2_stacker.Instance(
self,
f"Instance number {i}",
instance_type=ec2_stacker.InstanceType('t2.micro'),
machine_image=amazon_linux_2,
vpc=covid_free_vpc,
security_group=get_web_sg(),
user_data=ec2_stacker.UserData.custom(get_userdata()))
ec2_objects.append(ec2_instnace)
return ec2_objects
#utilty script, fetches instance ids/ references in cloudformation
def get_instance_reference_ids():
data = generate_instances()
for i in data:
yield (i.instance_id)
#create vpc with public & private subnet
covid_free_vpc = ec2_stacker.Vpc(
self,
'CovidFreeVPC',
enable_dns_support=True,
enable_dns_hostnames=True,
max_azs=3,
subnet_configuration=[
ec2_stacker.SubnetConfiguration(
subnet_type=ec2_stacker.SubnetType.PUBLIC,
name='InternetFacingSubnetGroup',
cidr_mask=24)
])
#ec2_stacker.SubnetConfiguration(subnet_type=ec2_stacker.SubnetType.PRIVATE, name='PrivateSubnetGroup', cidr_mask=24 )
#])
#creating security group requires vpc param
covid_free_sg = ec2_stacker.SecurityGroup(self,
'CovidFreeSG',
allow_all_outbound=True,
vpc=covid_free_vpc)
covid_free_sg.add_ingress_rule(peer=ec2_stacker.Peer.any_ipv4(),
connection=ec2_stacker.Port.tcp(80),
description="allow http traffic")
covid_free_sg.add_ingress_rule(ec2_stacker.Peer.any_ipv4(),
ec2_stacker.Port.tcp(22),
description="allow ssh traffic")
#create launch config (userdata is also a valid param)
covid_free_lc = ats_stacker.CfnLaunchConfiguration(
self,
'CovidFreeLC',
instance_type='t2.micro',
image_id='ami-0fc61db8544a617ed')
#set up autoscaling group - better to add userdata from asg, does not throw base64 error. Able to use strings
instance_type = ec2_stacker.InstanceType.of(
ec2_stacker.InstanceClass.BURSTABLE2,
ec2_stacker.InstanceSize.MICRO)
amazon_linux_2 = ec2_stacker.GenericLinuxImage(
{"us-east-1": "ami-0fc61db8544a617ed"})
covid_free_asg = ats_stacker.AutoScalingGroup(
self,
'CovidFreeASG',
vpc=covid_free_vpc,
associate_public_ip_address=True,
key_name="CoronaVirusKP",
instance_type=instance_type,
machine_image=amazon_linux_2,
min_capacity=5,
max_capacity=10)
covid_free_asg.add_user_data(get_userdata())
#Register targets to ELB is an Autoscaling group, must be a list/array ot targets
elb = elb_stacker.LoadBalancer(self,
'CovidFreeELB',
cross_zone=True,
vpc=covid_free_vpc,
health_check={"port": 80},
internet_facing=True,
subnet_selection=get_public_subnet(),
targets=[covid_free_asg])
elb.add_listener(external_port=80)