Terraform configuration which creates EC2 lauch type ECS resources on AWS together with postgres RDS.
You will first need to install terraform and configure aws cli profile.
brew install terraformBy default both, free tier and default configuration use default profile. If you want
to specify different profile you can to that by specifiying variables on the commandline
using -var option
terraform apply -var-file="free-tier.tfvars" -var="profile=jkobejs"terraform apply -var="profile=jkobejs"This configuration creates working ECS cluster with RDS using AWS Free Tier offering.
To create free tier infrastructure run
terraform apply -var-file="free-tier.tfvars"command. It will create virtual private network in eu-central-1 region that contains:
- 2 availability zones
- 2 subnets (public, database)
- application load balancer (public subnet)
- auto scaling group (public subnet)
- RDS (database subnet)
Besides VPC command will create:
- ECS cluster
- container instances
- user ecs task and servic
Using this command auto scaling group that contains EC2 container intances will be placed in public subnet. Usually desired place to place container instances would be private subnet. Since container instances need to communicate with ECS cluster over internet only way to satify this using Free Tier resources is to put it in public subnet because NAT gateways are not part of Free Tier.
By default terraform
terraform applycommand will create virtual private network in eu-central-1 region that contains:
- 2 availability zones
- 3 subnets (public, private, database)
- application load balancer (public subnet)
- NAT gateway per availability zone (public subnet)
- auto scaling group (private subnet)
- RDS (database subnet)
Besides VPC command will create:
- ECS cluster
- container instances
- user ecs task and service
No requirements.
No provider.
| Name | Description | Type | Default | Required |
|---|---|---|---|---|
| asg_desired_capacity | The number of Amazon EC2 instances that should be running in the group | number |
0 |
no |
| asg_max_size | The maximum size of the auto scale group | number |
1 |
no |
| asg_min_size | The minimum size of the auto scale group | number |
0 |
no |
| asg_wait_for_capacity_timeout | Setting this will cause Terraform to wait for exactly this number of healthy instances in all attached load balancers on both create and update operations. Takes precedence over min_elb_capacity behavior. | number |
0 |
no |
| azs | Availability zones, at least 2 availability zones should be specified | list |
[ |
no |
| cidr | VPC's cidr | string |
"10.1.0.0/16" |
no |
| database_subnets | Subnet in which database services will be deployed | list |
[ |
no |
| db_instance_type | Database instance type | string |
"db.t2.micro" |
no |
| db_name | Database name | string |
"master" |
no |
| db_password | Database password | string |
"ChangeMe!" |
no |
| db_username | Database username | string |
"db_user" |
no |
| ec2_instance_type | EC2 instance type | string |
"t2.micro" |
no |
| enable_nat_gateway | Flag that determines if NAT gateway will be created | bool |
true |
no |
| environment | Environment in which resources will be created | string |
"dev" |
no |
| name | Base name for all resources | string |
"ecs-terraform" |
no |
| one_nat_gateway_per_az | Flag that determines if one NAT gateway will be created per AZ | bool |
true |
no |
| private_subnets | Subnet in which private services will be deployed | list |
[ |
no |
| profile | Named profile, more on https://docs.aws.amazon.com/cli/latest/userguide/cli-configure-profiles.html | string |
"default" |
no |
| public_container_instances | Flag that determines if container instances are in public subnet (useful in free tier) | bool |
false |
no |
| public_subnets | Subnet in which public services will be deployed | list |
[ |
no |
| region | AWS region | string |
"eu-central-1" |
no |
| Name | Description |
|---|---|
| alb_arn | ALB arn |
| alb_dns_name | ALB DNS name |
| alb_ecs_role_arn | ALB role |
| alb_traget_group_arns | ALB target groups arns |
| asg_arn | ASG arn |
| ecr_arn | ECR arn |
| ecr_id | ECR id |
| ecs_cluster_arn | ECS cluster arn |
| ecs_cluster_id | ECS cluster id |
| ecs_cluster_name | ECS cluster name |
| erc_url | ECR url |
| rds_arn | RDS arn |
| rds_host | RDS host |
| vpc_id | VPC id |
Module managed by jkobejs
Apache 2 Licensed. See LICENSE for full details.