Valheim Server Terraform

This terraform code sets up a Valheim server on AWS, based on mbround18's valheim docker image. The following resources are created:

• VPC with one public subnet
• EC2 instance
• ECS cluster and Task Definition
• EFS for storing server/saves/backups files
• (Optional) Lambdas which terminate/create the EC2 instance on a schedule

The following external modules are used:

• diodonfrost/terraform-aws-lambda-scheduler-stop-start
• terraform-aws-modules/terraform-aws-vpc
• cloudposse/terraform-aws-ecs-container-definition

Setup

Clone this repository and cd into it:

$ git clone https://github.com/codeeno/valheim-terraform
$ cd valheim-terraform

Copy the terraform.tfvars.sample file:

$ mv terraform.tfvars.sample terraform.tfvars

Adjust the values in the terraform.tfvars to your liking. Then, apply the terraform:

$ terraform apply

Check the outputs for the elastic public IP address of your server.

Inputs

The inputs which start with server correspond to environment variables set by the docker container. Check the official documentation for more info.

Name	Type	Default
availability_zone	string	"eu-central-1a"
container_image_tag	string	"latest"
enable_scheduled_shutdown	bool	false
enable_scheduled_startup	bool	false
instance_type	string	n/a
key_name	string	null
server_auto_backup	number	null
server_auto_backup_days_to_live	number	null
server_auto_backup_on_shutdown	number	null
server_auto_backup_on_update	number	null
server_auto_backup_remove_old	number	null
server_auto_backup_schedule	string	null
server_auto_update	number	null
server_auto_update_schedule	string	null
server_name	string	n/a
server_password	string	n/a
server_public	number	1
server_tz	string	"Europe/Berlin"
server_update_on_startup	number	null
server_webhook_url	string	null
server_world	string	n/a
shutdown_schedule_expression	string	null
startup_schedule_expression	string	null
subnet_cidr	string	"10.0.0.0/24"
task_cpu	number	n/a
task_memory	number	n/a
vpc_cidr	string	"10.0.0.0/16"
vpc_subnet	string	"10.0.0.0/24"