terraform-aws-kong

Terraform Module to setup Kong(OSS) in ECS with self managed EC2 instances.

Architectural Diagram

Assumptions

This setup assumes that the ECS cluster that has Auto Scaling Group (ASG) exist with the name default. If you are using different name, you can provide those in the variables section of your Terraform configuration.

Adding Parameters to AWS Systems Manager Parameter Store

Ensure you have the AWS CLI installed on your machine. You can find the installation instructions for different operating systems in the official AWS CLI documentation: Install AWS CLI

Use the following commands to add the required parameters to AWS Systems Manager Parameter Store. These parameters are necessary for configuring your PostgreSQL database.

aws ssm put-parameter --name "/rds/POSTGRES_USERNAME" --value "value" --type "SecureString"
aws ssm put-parameter --name "/rds/POSTGRES_PASSWORD" --value "value" --type "SecureString"
aws ssm put-parameter --name "/rds/POSTGRES_DB_NAME" --value "value" --type "SecureString"

Requirements

Name	Version
terraform	>= 1.8.4
aws	>= 5.5.0

Providers

Name	Version
aws	>= 5.5.0

Modules

Name	Source	Version
ecs_kong	infraspecdev/ecs-deployment/aws	~> 4.0.4
ecs_task_security_group	terraform-aws-modules/security-group/aws	~> 5.1.2
internal_alb_kong	infraspecdev/ecs-deployment/aws//modules/alb	~> 2.0.0
internal_alb_security_group	terraform-aws-modules/security-group/aws	~> 5.1.2
kong_internal_dns_record	./modules/route-53-record	n/a
kong_public_dns_record	./modules/route-53-record	n/a
kong_rds	terraform-aws-modules/rds/aws	~> 6.7.0
postgres_security_group	terraform-aws-modules/security-group/aws	~> 5.1.2
public_alb_security_group	terraform-aws-modules/security-group/aws	~> 5.1.2

Resources

Name	Type
aws_iam_role.ecs_exec	resource
aws_iam_role_policy_attachment.ecs_exec	resource
aws_ecs_cluster.default	data source
aws_iam_policy_document.assume_role_policy	data source
aws_ssm_parameter.rds	data source
aws_vpc.vpc	data source

Inputs

Name	Description	Type	Default	Required
backup_retention_period	The number of days to retain backups	number	1	no
backup_window	The daily time range (in UTC) during which automated backups are created if they are enabled	string	null	no
cluster_name	Name of the cluster	string	"default"	no
container_image	Container image for kong	string	"kong:3.7.1-ubuntu"	no
cpu_for_kong_task	CPU required for kong task definiton	number	256	no
create_db_subnet_group	Whether to create a DB subnet group	bool	true	no
db_allocated_storage	The amount of allocated storage in GBs	number	20	no
db_max_allocated_storage	The maximum amount of allocated storage in GBs	number	100	no
deletion_protection	Whether to enable deletion protection	bool	false	no
desired_count_for_kong_service	Desired count for kong service	number	1	no
force_new_deployment	Whether to force new deployment	bool	true	no
kong_admin_domain_name	Kong admin domain name	string	n/a	yes
kong_public_domain_name	Kong public domain name	string	n/a	yes
log_configuration_for_kong	Log configuration for kong	any	null	no
maintenance_window	The window to perform maintenance in.Syntax:ddd:hh24:mi-ddd:hh24:mi	string	null	no
manage_master_user_password	Whether to manage master user password	bool	false	no
memory_for_kong_task	Memory required for kong task definiton	number	256	no
multi_az	Specifies if the RDS instance is multi-AZ	bool	false	no
performance_insights_enabled	Whether to enable performance insights	bool	true	no
performance_insights_retention_period	The retention period for performance insights	number	7	no
private_subnet_ids	List of private subnet id	list(string)	n/a	yes
public_subnet_ids	List of public subnet id	list(string)	n/a	yes
rds_db_tags	List of tags	map(string)	{}	no
rds_instance_class	The instance class to use	string	"db.t3.micro"	no
ssl_policy	Name of the SSL Policy for the listener.	string	"ELBSecurityPolicy-2016-08"	no
vpc_id	The ID of the VPC	string	n/a	yes

Outputs

Name	Description
ecs_service_arn	ARN of kong ECS service
internal_alb_dns	DNS name of internal ALB
public_alb_dns	DNS name of public ALB
rds_instance_endpoint	Endpoint of RDS instance