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main.tf
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######################################################
# VPC
######################################################
module "vpc" {
source = "shamimice03/vpc/aws"
version = "1.2.1"
create = var.create_vpc
vpc_name = var.vpc_name
cidr = var.cidr
azs = var.azs
public_subnet_cidr = var.public_subnet_cidr
intra_subnet_cidr = var.intra_subnet_cidr
db_subnet_cidr = var.db_subnet_cidr
enable_dns_hostnames = var.enable_dns_hostnames
enable_dns_support = var.enable_dns_support
enable_single_nat_gateway = var.enable_single_nat_gateway
tags = merge(
{ "VPC_name" = var.vpc_name },
var.general_tags,
)
}
######################################################
# Security Groups
######################################################
locals {
vpc_id = coalesce(module.vpc.vpc_id, var.vpc_id)
alb_sg_description = "Allow HTTP and HTTPS traffic from anywhere"
ec2_sg_description = "Allow inbound traffic from ALB"
efs_sg_description = "Allow inbound traffic from ec2-sg"
rds_sg_description = "Allow inbound traffic from ec2-sg"
ssh_sg_description = "Allow SSH from anywhere"
alb_sg_name = coalesce(var.alb_sg_name, "alb-sg")
ec2_sg_name = coalesce(var.ec2_sg_name, "ec2-sg")
efs_sg_name = coalesce(var.efs_sg_name, "efs-sg")
rds_sg_name = coalesce(var.rds_sg_name, "rds-sg")
ssh_sg_name = coalesce(var.ssh_sg_name, "ssh-sg")
}
module "alb_sg" {
source = "terraform-aws-modules/security-group/aws"
version = "5.1.0"
create = var.create_alb_sg
vpc_id = local.vpc_id
name = local.alb_sg_name
description = local.alb_sg_description
ingress_cidr_blocks = ["0.0.0.0/0"]
ingress_rules = ["http-80-tcp", "https-443-tcp"]
egress_rules = ["all-all"]
egress_cidr_blocks = ["0.0.0.0/0"]
}
module "ec2_sg" {
source = "terraform-aws-modules/security-group/aws"
version = "5.1.0"
create = var.create_ec2_sg
vpc_id = local.vpc_id
name = local.ec2_sg_name
description = local.ec2_sg_description
ingress_with_source_security_group_id = [
{
rule = "http-80-tcp"
source_security_group_id = module.alb_sg.security_group_id
},
]
egress_rules = ["all-all"]
egress_cidr_blocks = ["0.0.0.0/0"]
}
module "efs_sg" {
source = "terraform-aws-modules/security-group/aws"
version = "5.1.0"
create = var.create_efs_sg
vpc_id = local.vpc_id
name = local.efs_sg_name
description = local.efs_sg_description
ingress_with_source_security_group_id = [
{
rule = "nfs-tcp"
source_security_group_id = module.ec2_sg.security_group_id
},
]
egress_with_source_security_group_id = [
{
rule = "nfs-tcp"
source_security_group_id = module.ec2_sg.security_group_id
},
]
}
module "rds_sg" {
source = "terraform-aws-modules/security-group/aws"
version = "5.1.0"
create = var.create_rds_sg
vpc_id = local.vpc_id
name = local.rds_sg_name
description = local.rds_sg_description
ingress_with_source_security_group_id = [
{
rule = "mysql-tcp"
source_security_group_id = module.ec2_sg.security_group_id
},
]
egress_with_source_security_group_id = [
{
rule = "mysql-tcp"
source_security_group_id = module.ec2_sg.security_group_id
},
]
}
module "ssh_sg" {
source = "terraform-aws-modules/security-group/aws"
version = "5.1.0"
create = var.create_ssh_sg
vpc_id = local.vpc_id
name = local.ssh_sg_name
description = local.ssh_sg_description
ingress_rules = ["ssh-tcp"]
ingress_cidr_blocks = var.ssh_ingress_cidr
egress_rules = ["ssh-tcp"]
egress_cidr_blocks = ["0.0.0.0/0"]
}
##################################################
# Primary Database
##################################################
locals {
rds_security_groups = [module.rds_sg.security_group_id]
db_subnets = try(coalescelist(module.vpc.db_subnet_id, var.db_subnets), [])
db_security_groups = concat(local.rds_security_groups, var.db_security_groups)
}
module "rds" {
source = "shamimice03/rds-blueprint/aws"
version = "1.3.0"
create = var.create_primary_database
create_db_subnet_group = var.create_db_subnet_group
db_subnet_group_name = var.db_subnet_group_name
db_subnets = local.db_subnets
# Identify DB instance
db_identifier = var.db_identifier
# Create Initial Database
db_name = var.db_name
# Credentials Settings
# password will be auto generated
db_master_username = var.db_master_username
iam_database_authentication_enabled = var.iam_database_authentication_enabled
# Availability and durability
multi_az = var.multi_az
availability_zone = var.master_db_availability_zone
# Engine options
engine = var.engine
engine_version = var.engine_version
# DB Instance configurations
instance_class = var.instance_class
# Storage
storage_type = var.storage_type
allocated_storage = var.allocated_storage
max_allocated_storage = var.max_allocated_storage
# Connectivity
db_security_groups = local.db_security_groups
publicly_accessible = var.publicly_accessible
database_port = var.database_port
# Backup and Maintenance
backup_retention_period = var.backup_retention_period
backup_window = var.backup_window
maintenance_window = var.maintenance_window
deletion_protection = var.deletion_protection
# Monitoring
enabled_cloudwatch_logs_exports = var.enabled_cloudwatch_logs_exports
# Others
apply_immediately = var.apply_immediately
delete_automated_backups = var.delete_automated_backups
skip_final_snapshot = var.skip_final_snapshot
tags = merge(
{ "Name" = var.db_identifier },
var.general_tags,
)
}
##################################################
# Read Replica
##################################################
locals {
replica_db_identifier = coalesce(var.replica_db_identifier, join("-", [var.db_identifier, "replica"]))
create_replica_database = var.create_primary_database && var.create_replica_database
}
module "rds_replica" {
source = "shamimice03/rds-blueprint/aws"
version = "1.3.0"
create = local.create_replica_database
replicate_source_db = var.db_identifier
db_identifier = try(coalesce(var.replica_db_identifier, local.replica_db_identifier), "")
multi_az = try(coalesce(var.replica_multi_az, var.multi_az), "")
availability_zone = try(coalesce(var.replica_db_availability_zone, var.master_db_availability_zone, null), "")
engine = try(coalesce(var.replica_engine, var.engine), "")
engine_version = try(coalesce(var.replica_engine_version, var.engine_version), "")
instance_class = try(coalesce(var.replica_instance_class, var.instance_class), "")
iam_database_authentication_enabled = try(coalesce(var.replica_iam_database_authentication_enabled, var.iam_database_authentication_enabled), "")
storage_type = try(coalesce(var.replica_storage_type, var.storage_type), "")
max_allocated_storage = try(coalesce(var.replica_max_allocated_storage, var.max_allocated_storage), "")
db_security_groups = concat(local.rds_security_groups, var.db_security_groups)
publicly_accessible = try(coalesce(var.replica_publicly_accessible, var.publicly_accessible), "")
database_port = try(coalesce(var.replica_database_port, var.database_port), "")
backup_retention_period = try(coalesce(var.replica_backup_retention_period, var.backup_retention_period), "")
backup_window = try(coalesce(var.replica_backup_window, var.backup_window), "")
maintenance_window = try(coalesce(var.replica_maintenance_window, var.maintenance_window), "")
deletion_protection = try(coalesce(var.replica_deletion_protection, var.deletion_protection), "")
enabled_cloudwatch_logs_exports = try(coalesce(var.replica_enabled_cloudwatch_logs_exports, var.enabled_cloudwatch_logs_exports), "")
apply_immediately = try(coalesce(var.replica_apply_immediately, var.apply_immediately), "")
delete_automated_backups = try(coalesce(var.replica_delete_automated_backups, var.delete_automated_backups), "")
skip_final_snapshot = try(coalesce(var.replica_skip_final_snapshot, var.skip_final_snapshot), "")
tags = merge(
{ "Name" = "${var.db_identifier}-replica" },
var.general_tags,
)
depends_on = [module.rds]
}
##################################################
# Store Database Parameters to SSM Parameter Store
##################################################
locals {
primary_db_parameters_prefix = join("/", ["/rds", var.db_identifier, var.engine])
replica_db_parameters_prefix = join("/", ["/rds", local.replica_db_identifier, coalesce(var.replica_engine, var.engine)])
efs_parameters_prefix = join("/", ["/efs", var.efs_name])
}
##################################################
# Primary Database Parameters
##################################################
locals {
create_primary_db_parameters = var.create_primary_database && var.create_primary_db_parameters
}
module "primary_db_parameters" {
source = "shamimice03/ssm-parameter/aws"
version = "0.5.0"
parameters = [
{
create = local.create_primary_db_parameters
name = join("/", [local.primary_db_parameters_prefix, "DBUser"])
type = "String"
description = "Database Username"
value = module.rds.db_instance_username
tags = var.general_tags
},
{
create = local.create_primary_db_parameters
name = join("/", [local.primary_db_parameters_prefix, "DBName"])
type = "String"
description = "Initial Database Name"
value = module.rds.db_name
tags = var.general_tags
},
{
create = local.create_primary_db_parameters
name = join("/", [local.primary_db_parameters_prefix, "DBEndpoint"])
type = "String"
description = "Database Instance Endpoint"
value = module.rds.db_instance_endpoint
tags = var.general_tags
},
{
create = local.create_primary_db_parameters
name = join("/", [local.primary_db_parameters_prefix, "DBHostname"])
type = "String"
description = "Database Instance Hostname"
value = module.rds.db_instance_address
tags = var.general_tags
},
{
create = local.create_primary_db_parameters
name = join("/", [local.primary_db_parameters_prefix, "DBPort"])
type = "String"
description = "Database Instance Port"
value = module.rds.db_instance_port
tags = var.general_tags
},
{
create = local.create_primary_db_parameters
name = join("/", [local.primary_db_parameters_prefix, "DBPassword"])
type = "SecureString"
description = "Database password"
value = module.rds.db_instance_password
key_alias = "alias/aws/ssm"
tags = var.general_tags
},
]
}
##################################################
# Replica Database Parameters
##################################################
locals {
create_replica_db_parameters = var.create_primary_database && var.create_replica_database && var.create_replica_db_parameters
}
module "replica_db_parameters" {
source = "shamimice03/ssm-parameter/aws"
version = "0.5.0"
parameters = [
{
create = local.create_replica_db_parameters
name = join("/", [local.replica_db_parameters_prefix, "DBUser"])
type = "String"
description = "Database Username"
value = module.rds_replica.db_instance_username
tags = var.general_tags
},
{
create = local.create_replica_db_parameters
name = join("/", [local.replica_db_parameters_prefix, "DBName"])
type = "String"
description = "Initial Database Name"
value = module.rds_replica.db_name
tags = var.general_tags
},
{
create = local.create_replica_db_parameters
name = join("/", [local.replica_db_parameters_prefix, "DBEndpoint"])
type = "String"
description = "Database Instance Endpoint"
value = module.rds_replica.db_instance_endpoint
tags = var.general_tags
},
{
create = local.create_replica_db_parameters
name = join("/", [local.replica_db_parameters_prefix, "DBHostname"])
type = "String"
description = "Database Instance Hostname"
value = module.rds_replica.db_instance_address
tags = var.general_tags
},
{
create = local.create_replica_db_parameters
name = join("/", [local.replica_db_parameters_prefix, "DBPort"])
type = "String"
description = "Database Instance Port"
value = module.rds_replica.db_instance_port
tags = var.general_tags
},
{
create = local.create_replica_db_parameters
name = join("/", [local.replica_db_parameters_prefix, "DBPassword"])
type = "SecureString"
description = "Database password"
value = module.rds_replica.db_instance_password
key_alias = "alias/aws/ssm"
tags = var.general_tags
},
]
}
##################################################
# Elastic File System
##################################################
locals {
efs_mount_target_subnet_ids = try(coalescelist(module.vpc.intra_subnet_id, var.efs_mount_target_subnet_ids), [])
efs_mount_target_security_group_ids = concat([module.efs_sg.security_group_id], var.efs_mount_target_security_group_ids)
efs_mount_target_subnet_count = length(try(coalescelist(var.intra_subnet_cidr, var.efs_mount_target_subnet_ids), []))
}
module "efs" {
source = "./modules/efs"
create = var.efs_create
name = var.efs_name
efs_mount_target_subnet_ids = local.efs_mount_target_subnet_ids
efs_mount_target_security_group_ids = local.efs_mount_target_security_group_ids
efs_mount_target_subnet_count = local.efs_mount_target_subnet_count
efs_encrypted = var.efs_encrypted
efs_throughput_mode = var.efs_throughput_mode
efs_performance_mode = var.efs_performance_mode
efs_transition_to_ia = var.efs_transition_to_ia
efs_tags = merge(
{ "Name" = var.efs_name },
var.general_tags,
)
depends_on = [module.vpc.intra_subnet_id, module.efs_sg.security_group_id]
}
##################################################
# EFS Parameters
##################################################
locals {
create_efs_parameters = var.efs_create && var.create_efs_parameters
}
module "efs_parameters" {
source = "shamimice03/ssm-parameter/aws"
version = "0.5.0"
parameters = [
{
create = local.create_efs_parameters
name = join("/", [local.efs_parameters_prefix, "EFSID"])
type = "String"
description = "The ID that identifies the file system"
value = module.efs.id
tags = var.general_tags
},
]
}
##################################################
# ACM - Route53
##################################################
module "acm_route53" {
source = "shamimice03/acm-route53/aws"
version = "1.1.0"
create = var.create_certificates
domain_names = var.acm_domain_names
validation_method = var.acm_validation_method
hosted_zone_name = var.acm_hosted_zone_name
private_zone = var.acm_private_zone
allow_record_overwrite = var.acm_allow_record_overwrite
ttl = var.acm_ttl
tags = merge(
{ "Name" = "ssl_cert" },
var.general_tags,
)
}
##################################################
# ALB
##################################################
data "aws_acm_certificate" "issued" {
count = var.create_lb ? 1 : 0
domain = var.alb_acm_certificate_domain_name
statuses = ["ISSUED"]
depends_on = [module.acm_route53]
}
locals {
alb_subnets = coalescelist(module.vpc.public_subnet_id, var.alb_subnets)
alb_security_groups = concat([module.alb_sg.security_group_id], var.alb_security_groups)
alb_name_prefix = coalesce(var.alb_name_prefix, "refalb")
alb_target_group_name_prefix = coalesce(var.alb_target_group_name_prefix, "ref-tg")
alb_certificate_arn = data.aws_acm_certificate.issued[0].arn
}
module "alb" {
source = "terraform-aws-modules/alb/aws"
version = "8.7.0"
create_lb = var.create_lb
name_prefix = local.alb_name_prefix
load_balancer_type = var.load_balancer_type
vpc_id = local.vpc_id
subnets = local.alb_subnets
security_groups = local.alb_security_groups
# access_logs = {
# bucket = "my-alb-logs"
# }
target_groups = [
{
name_prefix = local.alb_target_group_name_prefix
target_type = "instance"
backend_port = 80
backend_protocol = "HTTP"
protocol_version = "HTTP1"
health_check = {
enabled = true
interval = 30
path = "/"
port = "traffic-port"
healthy_threshold = 3
unhealthy_threshold = 3
timeout = 6
protocol = "HTTP"
matcher = "200-399"
}
}
]
https_listeners = [
{
port = 443
protocol = "HTTPS"
certificate_arn = local.alb_certificate_arn
action_type = "forward"
target_group_index = 0
}
]
http_tcp_listeners = [
{
port = 80
protocol = "HTTP"
target_group_index = 0
action_type = "redirect"
redirect = {
port = "443"
protocol = "HTTPS"
status_code = "HTTP_301"
}
}
]
tags = merge(
{ "Name" = local.alb_name_prefix },
var.general_tags,
)
}
##################################################
# ALB - route53
##################################################
locals {
alb_dns_name = module.alb.lb_dns_name
alb_zone_id = module.alb.lb_zone_id
alb_route53_record_names = coalesce(var.alb_route53_record_names, var.acm_domain_names)
alb_route53_zone_name = coalesce(var.alb_route53_zone_name, var.acm_hosted_zone_name)
}
module "alb_route53_record" {
source = "./modules/alb-route53"
create_record = var.create_alb_route53_record
allow_record_overwrite = var.alb_route53_allow_record_overwrite
record_names = local.alb_route53_record_names
zone_name = local.alb_route53_zone_name
record_type = var.alb_route53_record_type
lb_dns_name = local.alb_dns_name
lb_zone_id = local.alb_zone_id
private_zone = var.alb_route53_private_zone
evaluate_target_health = var.alb_route53_evaluate_target_health
}
#######################################
# Create custom policy
#######################################
module "custom_iam_policy" {
source = "terraform-aws-modules/iam/aws//modules/iam-policy"
version = "5.30.0"
create_policy = var.create_custom_policy
name_prefix = var.custom_iam_policy_name_prefix
path = var.custom_iam_policy_path
description = coalesce(var.custom_iam_policy_description, var.custom_iam_policy_name_prefix)
policy = var.custom_iam_policy_json
tags = merge(
{ "Type" = "Custom-Policy" },
var.general_tags,
)
}
#######################################
# IAM Instance profile
#######################################
locals {
instance_profile_custom_policy_arns = compact(concat(var.instance_profile_custom_policy_arns, [module.custom_iam_policy.arn]))
instance_profile_custom_policy_arns_count = length(var.instance_profile_custom_policy_arns) + (var.create_custom_policy ? 1 : 0)
instance_profile_instance_profile_name = coalesce(var.instance_profile_instance_profile_name, var.instance_profile_role_name)
}
module "instance_profile" {
source = "./modules/iam-instance-profile"
create_instance_profile = var.create_instance_profile
role_name = var.instance_profile_role_name
instance_profile_name = local.instance_profile_instance_profile_name
managed_policy_arns = var.instance_profile_managed_policy_arns
custom_policy_arns = local.instance_profile_custom_policy_arns
custom_policy_arns_count = local.instance_profile_custom_policy_arns_count
role_path = var.instance_profile_role_path
depends_on = [module.custom_iam_policy]
}
##################################################
# Launch Template
##################################################
data "aws_ami" "amazonlinux2" {
most_recent = true
owners = ["amazon"]
filter {
name = "name"
values = ["amzn2-ami-kernel-*-hvm-*"]
}
}
locals {
launch_template_sg_ids = concat(concat([module.ec2_sg.security_group_id, module.ssh_sg.security_group_id]), var.launch_template_sg_ids)
launch_template_image_id = coalesce(var.launch_template_image_id, data.aws_ami.amazonlinux2.id)
launch_template_name_prefix = coalesce(var.launch_template_name_prefix, var.project_name)
launch_template_iam_instance_profile_name = module.instance_profile.profile_name
launch_template_userdata_file_path = try(filebase64("${path.module}/${var.launch_template_userdata_file_path}"), "")
}
module "launch_template" {
source = "./modules/launch-template"
create = var.create_launch_template
launch_template_name_prefix = local.launch_template_name_prefix
image_id = local.launch_template_image_id
instance_type = var.launch_template_instance_type
key_name = var.launch_template_key_name
update_default_version = var.launch_template_update_default_version
vpc_security_group_ids = local.launch_template_sg_ids
iam_instance_profile_name = local.launch_template_iam_instance_profile_name
device_name = var.launch_template_device_name
volume_size = var.launch_template_volume_size
volume_type = var.launch_template_volume_type
delete_on_termination = var.launch_template_delete_on_termination
enable_monitoring = var.launch_template_enable_monitoring
user_data_file_path = local.launch_template_userdata_file_path
# tag_specifications
resource_type = var.launch_template_resource_type
tags = merge(
{ "Name" = local.launch_template_name_prefix },
var.general_tags,
)
}
##################################################
# Auto-Scaling
##################################################
locals {
asg_launch_template_name = module.launch_template.name
asg_launch_template_version = module.launch_template.latest_version
asg_vpc_zone_identifier = coalescelist(module.vpc.public_subnet_id, var.asg_vpc_zone_identifier)
asg_name = coalesce(var.asg_name, join("-", [var.project_name, "asg"]))
asg_target_group_arns = module.alb.target_group_arns
}
module "asg" {
source = "terraform-aws-modules/autoscaling/aws"
version = "6.10.0"
create = var.asg_create && var.create_launch_template
# `launch template` created separately using `launch template` module
create_launch_template = false
name = local.asg_name
launch_template = local.asg_launch_template_name
launch_template_version = local.asg_launch_template_version
vpc_zone_identifier = local.asg_vpc_zone_identifier
desired_capacity = var.asg_desired_capacity
min_size = var.asg_min_size
max_size = var.asg_max_size
target_group_arns = local.asg_target_group_arns
wait_for_capacity_timeout = var.asg_wait_for_capacity_timeout
health_check_type = var.asg_health_check_type
health_check_grace_period = var.asg_health_check_grace_period
enable_monitoring = var.asg_enable_monitoring
tags = merge(
{ "Name" = local.asg_name },
var.general_tags,
)
}