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__main__.py
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__main__.py
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import json
import subprocess
import pulumi
import pulumi_gcp as gcp
from pulumi_aws import ec2, get_availability_zones, iam, route53, autoscaling, lb, cloudwatch, sns, secretsmanager, dynamodb, lambda_
import ipaddress
from pulumi_aws import ec2, secretsmanager, ssm, acm
import postgres_db
import base64
import utils
from pulumi_command import local
'''======================================'''
is_debug = False
# # Fetch the region from pulumi config
region = pulumi.Config("aws").require("region")
vpc_cidr = "10.0.0.0/" + pulumi.Config("iac-pulumi").require("vpcCidr")
print(f"VPC cidr-{vpc_cidr}")
instance_type = pulumi.Config(
"iac-pulumi").require("instance_type") # 't2.micro'
root_volume_size = int(pulumi.Config(
"iac-pulumi").require("volume_size")) # 25
root_volume_type = pulumi.Config("iac-pulumi").require("volume_type") # 'gp2'
subnet_prefix_length = int(pulumi.Config(
"iac-pulumi").require("subnet_prefix_length")) # 24
gcp_project_id = pulumi.Config("gcp").require("project")
public_subnets = []
private_subnets = []
db_user = pulumi.Config("iac-pulumi").require("dbuser")
db_pass = pulumi.Config("iac-pulumi").require("dbpass")
url = pulumi.Config("iac-pulumi").require("url")
if url.startswith("demo"):
acm_cert_arn = ssm.get_parameter(name="/demo/vyshnavi2024/certificate")
acm_cert_arn = acm_cert_arn.value
pulumi.export("acm_cert_arn", acm_cert_arn)
else:
# Create ACM Certificate
certificate = acm.Certificate("dev-certificate",
domain_name=url,
validation_method="DNS",
)
acm_cert_arn= certificate.arn
# AWS Route53 Zone for the domain
zone = route53.get_zone(name=url)
# Find the DNS validation records
validation_records = route53.Record("certificate_validation_dns_records",
records=[certificate.domain_validation_options[0].resource_record_value],
name=certificate.domain_validation_options[0].resource_record_name,
type=certificate.domain_validation_options[0].resource_record_type,
ttl=60,
zone_id=zone.id,
)
# Validate the ACM certificate
validation = acm.CertificateValidation("certificate_validation",
certificate_arn=certificate.arn,
validation_record_fqdns=[
validation_records.fqdn],
)
pulumi.export("Create ACM certificate", "No certificate found")
# Get availability zones in the current region
azs = get_availability_zones(state="available")
# Limit to 3 if more available
actual_az_count = min(len(azs.names), 3)
num_subnets = actual_az_count * 2
def getLatestAMI():
ami = ec2.get_ami(
most_recent="true",
owners=["831891561989"],
filters=[
ec2.GetAmiFilterArgs(name="name", values=["cye6225_2023_*"])
]
)
print(f"AMI Id: {ami.id}, AMI Name: {ami.name}")
return ami.id
def calculate_subnets(vpc_cidr, subnet_prefix_length):
"""Calculate subnets based on VPC CIDR and desired subnet prefix length."""
return [str(subnet) for subnet in ipaddress.ip_network(vpc_cidr).subnets(new_prefix=subnet_prefix_length)]
def createSubnets():
print(
f"Creating Subnets......using VPC CIDR {vpc_cidr} and length: {subnet_prefix_length}")
subnet_cidr_blocks = calculate_subnets(vpc_cidr, subnet_prefix_length)
if is_debug:
print(f"subnet cidr blocks {subnet_cidr_blocks}")
for i, az in enumerate(azs.names[:actual_az_count]):
# Calculate the CIDR ranges for subnets
public_cidr = str(subnet_cidr_blocks[i])
private_cidr = str(subnet_cidr_blocks[i + actual_az_count])
# Create public subnet
public_subnet = ec2.Subnet(f"public-subnet-{az}",
vpc_id=vpc.id,
cidr_block=public_cidr,
availability_zone=az,
map_public_ip_on_launch=True,
)
public_subnets.append(public_subnet)
if is_debug:
print(public_subnet, public_subnet.id)
# Associate public subnets with the public route table
ec2.RouteTableAssociation(f"public-subnet-association-{i}",
subnet_id=public_subnet.id,
route_table_id=public_route_table.id,
)
# Create private subnet
private_subnet = ec2.Subnet(f"private-subnet-{az}",
vpc_id=vpc.id,
cidr_block=private_cidr,
availability_zone=az,
)
private_subnets.append(private_subnet)
# Associate private subnets with the private route table
ec2.RouteTableAssociation(f"private-subnet-association-{i}",
subnet_id=private_subnet.id,
route_table_id=private_route_table.id,
)
def createLoadBalancerSecurityGroup():
# Create a security group for the load balancer
load_balancer_security_group = ec2.SecurityGroup(
"loadBalancerSecurityGroup",
description="Security group for the load balancer",
vpc_id=vpc.id,
ingress=[
ec2.SecurityGroupIngressArgs(
from_port=80,
to_port=80,
protocol="tcp",
cidr_blocks=["0.0.0.0/0"],
),
ec2.SecurityGroupIngressArgs(
from_port=443,
to_port=443,
protocol="tcp",
cidr_blocks=["0.0.0.0/0"],
),
],
egress=[
ec2.SecurityGroupEgressArgs(
protocol='-1',
from_port=0,
to_port=0,
cidr_blocks=['0.0.0.0/0'],
),
],
tags={"Name": "load_balancer_security_group"},
)
return load_balancer_security_group
def createSecurityGroup():
# # Create a security group for the EC2 instances
application_security_group = ec2.SecurityGroup("application_security_group",
description="Security group for web application EC2 instances",
vpc_id=vpc.id,
ingress=[
ec2.SecurityGroupIngressArgs(
from_port=22,
to_port=22,
protocol="tcp",
security_groups=[
load_balancer_secrurity_group.id],
),
ec2.SecurityGroupIngressArgs(
from_port=8001,
to_port=8001,
protocol="tcp",
security_groups=[
load_balancer_secrurity_group.id],
)
],
egress=[
{
'protocol': '-1',
'from_port': 0,
'to_port': 0,
'cidr_blocks': ['0.0.0.0/0'],
},
],
tags={
"Name": "application_security_group"}
)
return application_security_group
# Define the name of the security group
db_security_group_name = "database-security-group"
def createdbSecurityGroup():
# Create a security group for the RDS instances
db_security_group = ec2.SecurityGroup(
db_security_group_name,
description="Security group for RDS instances",
vpc_id=vpc.id,
tags={"Name": "database_security_group"},
)
# Define the ingress rule to allow TCP traffic on port 5432 from the 'application security group'
db_security_group_rule = ec2.SecurityGroupRule(
"allow-postgres-ingress",
type="ingress",
from_port=5432,
to_port=5432,
protocol="tcp",
security_group_id=db_security_group.id,
source_security_group_id=application_security_group.id,
)
return db_security_group
# Create a new VPC
vpc = ec2.Vpc("my-vpc-1",
cidr_block=vpc_cidr,
enable_dns_support=True,
enable_dns_hostnames=True,
)
# # Create an Internet Gateway and attach it to the VPC
igw = ec2.InternetGateway("my-igw-1", vpc_id=vpc.id)
# # Create a public route table
public_route_table = ec2.RouteTable("public-route-table",
vpc_id=vpc.id,
)
# # Create a private route table
private_route_table = ec2.RouteTable("private-route-table",
vpc_id=vpc.id,
)
# # Create a route for the Internet Gateway in the public route table
public_route = ec2.Route("public-route",
route_table_id=public_route_table.id,
destination_cidr_block="0.0.0.0/0",
gateway_id=igw.id,
)
createSubnets()
load_balancer_secrurity_group = createLoadBalancerSecurityGroup()
application_security_group = createSecurityGroup()
ami_id = getLatestAMI()
print(f"********* AMI ID: {ami_id}")
key_pair = utils.getKeyPair()
database_security_group = createdbSecurityGroup()
encoded_user_data = base64.b64encode(
utils.get_userdata_script().encode()).decode()
db = postgres_db.Database(name="csye6225", username=db_user, password=db_pass,
security_group_id=database_security_group.id, private_subnets=private_subnets)
db_end_point = secretsmanager.Secret("db_end_point",
name="csye2023_db_end_point",
description="DB end point"
)
db_url = db.rds_instance.address
db.rds_instance.endpoint
pub_secret_version = secretsmanager.SecretVersion("db_end_point",
secret_id=db_end_point.id,
secret_string=db.rds_instance.address
)
db_master_user = secretsmanager.Secret("db_master_user",
name="db_master_user",
description="DB username"
)
db_user_secret_version = secretsmanager.SecretVersion("db_master_user",
secret_id=db_master_user.id,
secret_string=db_user
)
db_master_pass = secretsmanager.Secret("db_master_pass",
name="db_master_pass",
description="DB username"
)
db_pass_secret_version = secretsmanager.SecretVersion("db_master_pass",
secret_id=db_master_pass.id,
secret_string=db_pass
)
'''To create EC2 instances in all public subnets'''
public_ec2_instances = []
instance_profile = utils.getIAMInstanceRole()
# Create a load balancer
load_balancer = lb.LoadBalancer(
"my-loadbalancer",
internal=False,
security_groups=[load_balancer_secrurity_group.id],
subnets=[public_subnet.id for public_subnet in public_subnets],
load_balancer_type="application",
enable_deletion_protection=False,
tags={"Name": "LoadBalancer_CSYE6225"},
)
# Create a default target group to handle HTTP traffic on port 8001
target_group = lb.TargetGroup(
"my-targetgroup",
port=8001,
protocol="HTTP",
vpc_id=vpc.id,
target_type="instance",
health_check={
"enabled": True,
"path": "/healthz",
"protocol": "HTTP",
"port": "8001",
"interval": 15,
"timeout": 15,
"healthy_threshold": 2,
"unhealthy_threshold": 2,
},
tags={
"Name": "TargetGroup_CSYE6225",
}
)
listener = lb.Listener(
"my-listener",
load_balancer_arn=load_balancer.arn,
port=443,
protocol="HTTPS",
certificate_arn=acm_cert_arn,
default_actions=[lb.ListenerDefaultActionArgs(
type="forward",
target_group_arn=target_group.arn
)]
)
hostedzone = route53.get_zone(name=url)
loadbalancerdnsname = load_balancer.dns_name
block_device_mappings = ec2.LaunchTemplateBlockDeviceMappingArgs(
device_name="/dev/xvda",
ebs=ec2.LaunchTemplateBlockDeviceMappingEbsArgs(
volume_size=root_volume_size,
volume_type=root_volume_type,
delete_on_termination=True,
)
)
tag_specifications = ec2.LaunchTemplateTagSpecificationArgs(
resource_type="instance",
tags={
"Name": "autoScalingGroupInstance",
}
)
# Create launch template
launch_template = ec2.LaunchTemplate(
"web-app-launch-template",
description="Launch template for web application instances",
image_id=ami_id,
instance_type=instance_type,
key_name=key_pair.key_name,
network_interfaces=[{
"associate_public_ip_address": True,
"security_groups": [application_security_group.id],
}],
iam_instance_profile=ec2.LaunchTemplateIamInstanceProfileArgs(
name=instance_profile.name,
),
user_data=encoded_user_data,
block_device_mappings=[block_device_mappings],
tag_specifications=[tag_specifications],
)
pulumi.export("launch template id", launch_template.id)
launch_param = ssm.Parameter(resource_name="LaunchTemplateId",
name='LaunchTemplateId',
type="String",
value=launch_template.id)
auto_scaling_group = autoscaling.Group("autoscalingGroup",
desired_capacity=1,
min_size=1,
max_size=3,
default_cooldown=60,
health_check_type="EC2",
launch_template=autoscaling.GroupLaunchTemplateArgs(
id=launch_template.id,
version="$Latest",
),
termination_policies=["OldestInstance"],
vpc_zone_identifiers=[
public_subnet.id for public_subnet in public_subnets],
tags=[autoscaling.GroupTagArgs(
key="Name",
value="web-asg-instance",
propagate_at_launch=True
)]
)
scale_down_policy = autoscaling.Policy("scale_down",
scaling_adjustment=-1,
adjustment_type="ChangeInCapacity",
cooldown=60,
autoscaling_group_name=auto_scaling_group.name,
policy_type="SimpleScaling",
)
scale_up_policy = autoscaling.Policy("scaleUpPolicy",
autoscaling_group_name=auto_scaling_group.name,
adjustment_type="ChangeInCapacity",
scaling_adjustment=1,
cooldown=60,
policy_type="SimpleScaling",
)
# Create the scale up policy
cpu_utilization_high_alarm = cloudwatch.MetricAlarm("cpuUtilizationHighAlarm",
metric_name="CPUUtilization",
namespace="AWS/EC2",
statistic="Average",
comparison_operator="GreaterThanOrEqualToThreshold",
evaluation_periods=2,
period=120,
alarm_description="This metric checks cpu utilization",
alarm_actions=[
scale_up_policy.arn],
dimensions={
"AutoScalingGroupName": auto_scaling_group.name},
threshold=5,
)
cpu_utilization_low_alarm = cloudwatch.MetricAlarm("cpuUtilizationLowAlarm",
metric_name="CPUUtilization",
namespace="AWS/EC2",
statistic="Average",
comparison_operator="LessThanOrEqualToThreshold",
evaluation_periods=2,
period=120,
alarm_description="This metric checks cpu utilization",
alarm_actions=[
scale_down_policy.arn],
dimensions={
"AutoScalingGroupName": auto_scaling_group.name},
threshold=3,
)
autoscaling_group_id = auto_scaling_group.name
tg_arn = target_group.arn
attach_target_group_command = local.Command('attachTargetGroup',
create=f'aws autoscaling attach-load-balancer-target-groups --auto-scaling-group-name $AUTOSCALING_GROUP_ID --target-group-arn $TARGET_GROUP_ARN',
environment={
"AUTOSCALING_GROUP_ID": autoscaling_group_id,
"TARGET_GROUP_ARN": tg_arn
},
triggers=[autoscaling_group_id]
)
autoscaling_param = ssm.Parameter(resource_name="AutoScalingGroupName",
name='AutoScalingGroupName',
type="String",
value=auto_scaling_group.name)
# hostedzone= "Z0676186FVDWJZOR1MH4" #dev
# hostedzone='Z025470929G96ACB83BAB'#demo
# Create a Route53 Record Set
record_set = route53.Record("my-csye-record",
zone_id=hostedzone.id,
name=url,
type="A",
aliases=[
route53.RecordAliasArgs(
name=load_balancer.dns_name,
zone_id=load_balancer.zone_id,
evaluate_target_health=True
)
]
)
def serialize(obj):
return obj.__str__
sns_topic = sns.Topic("csye_topic")
sns_topic_param = ssm.Parameter(resource_name="csye_topic",
name='csye_topic',
type="String",
value=sns_topic.arn)
service_account = gcp.serviceaccount.Account(resource_name='csye-service-account',
project=gcp_project_id,
account_id='csye-service-account',
display_name='CSYE Service Account')
service_account_key = gcp.serviceaccount.Key(resource_name='csye-service-account-key',
service_account_id=service_account.id)
bucket = gcp.storage.Bucket(resource_name="csye-mybucket",
name="csye-mybucket", location="us-east1", project=gcp_project_id)
member_email = "csye-service-account@abiding-cycle-406523.iam.gserviceaccount.com"
# Create a GCP IAM policy
bucket_iam = gcp.storage.BucketIAMBinding("bucketIAM",
bucket=bucket.id,
members=[pulumi.Output.concat(
'serviceAccount:', service_account.email)],
role="roles/storage.admin",
)
# Store Google Service Account access keys in Secrets Manager
google_credentials = secretsmanager.Secret("gcs_cred",
name="gcs_cred",
description="gcp credentials",
)
decoded_key = service_account_key.private_key.apply(
lambda key: base64.b64decode(key).decode("utf-8") if key else None
)
gcp_cred_secret = secretsmanager.SecretVersion("gcs_cred",
secret_id=google_credentials.id,
secret_string=decoded_key
)
# Create a DynamoDB table for the Lambda Function
dynamodb_table = dynamodb.Table('csye-email-table',
attributes=[{
'name': 'id',
'type': 'S',
}],
hash_key='id',
billing_mode='PAY_PER_REQUEST')
lambda_role = iam.Role('lambda-role',
assume_role_policy=iam.get_policy_document(statements=[{
'actions': ['sts:AssumeRole'],
'principals': [{
'identifiers': ['lambda.amazonaws.com'],
'type': 'Service',
}],
}]).json)
# Create an IAM policy that grants the Lambda function access to the necessary services
lambda_policy = iam.RolePolicy('lambda-policy',
role=lambda_role.id,
policy=pulumi.Output.all(dynamodb_table.name, google_credentials.arn).apply(
lambda args: iam.get_policy_document(statements=[{
'actions': [
's3:ListBucket',
's3:GetObject',
's3:PutObject',
'dynamodb:*',
'cloudwatch:*',
'secretsmanager:GetSecretValue',
],
'resources': ["*"]
}]).json
)
)
lambda_policy_cloudwatch = iam.RolePolicyAttachment("lambda-cloudwatch-policy",
role=lambda_role.name,
policy_arn="arn:aws:iam::aws:policy/service-role/AWSLambdaBasicExecutionRole")
# Create a Lambda layer from the S3 bucket object
lambda_layer = lambda_.LayerVersion(
'lambda_layer',
code=pulumi.FileArchive('./app_layers.zip'),
layer_name='my-lambda-layer',
compatible_runtimes=["python3.9"]
)
# Create the Lambda function
lambda_function = lambda_.Function('csye-lambda-function',
role=lambda_role.arn,
runtime='python3.9',
handler='serverless.lambda_handler',
code=pulumi.FileArchive('./app.zip'),
timeout=30,
environment={
'variables': {
'GOOGLE_CREDENTIALS_SECRET_ARN': google_credentials.arn,
'BUCKET_NAME': bucket.name,
'DYNAMODB_TABLE_NAME': dynamodb_table.name,
}
},
layers=[lambda_layer.arn],
)
# Lambda function subscription on the SNS Topic
sns_subscription = sns.TopicSubscription('snsSubscription',
endpoint=lambda_function.arn,
topic=sns_topic.arn,
protocol='lambda'
)
# Allow the SNS topic to trigger the Lambda function
lambda_permission = lambda_.Permission('my_lambda_permission',
action='lambda:InvokeFunction',
function=lambda_function.name,
principal='sns.amazonaws.com',
source_arn=sns_topic.arn,
)
pulumi.export("vpc_id", vpc.id)
pulumi.export("public_subnets_ids", [subnet.id for subnet in public_subnets])
pulumi.export("private_subnets_ids", [subnet.id for subnet in private_subnets])
pulumi.export("public_route_table_id", public_route_table.id)
pulumi.export("private_route_table_id", private_route_table.id)
'''======================================'''