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ec2.tf
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ec2.tf
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locals {
duckdns_script_file_content_b64 = base64encode(templatefile("./cloud-init/duckdns/duck.sh", {
duckdns_domain = var.duckdns_domain
duckdns_token = var.duckdns_token
duckdns_interval = var.duckdns_interval
}))
duckdns_service_file_content_b64 = base64encode(file("./cloud-init/duckdns/duck.service"))
minecraft_data_path = "/srv/minecraft"
minecraft_compose_service_name = "mc"
device_name = "/dev/sdm"
minecraft_shutdown_service_file_content_b64 = base64encode(file(("./cloud-init/minecraft/minecraft_shutdown.service")))
minecraft_shutdown_timer_file_content_b64 = base64encode(file("./cloud-init/minecraft/minecraft_shutdown.timer"))
minecraft_shutdown_script_file_content_b64 = base64encode(templatefile("./cloud-init/minecraft/minecraft_shutdown.sh", {
minecraft_data_path = local.minecraft_data_path
minecraft_compose_service_name = local.minecraft_compose_service_name
}))
minecraft_service_file_content_b64 = base64encode(templatefile(("./cloud-init/minecraft/minecraft.service"), {
minecraft_data_path = local.minecraft_data_path
}))
minecraft_compose_file_content_b64 = base64encode(yamlencode({
"services" : {
"mc" : merge({
"image" : "itzg/minecraft-server",
"tty" : true,
"stdin_open" : true,
"ports" : var.minecraft_compose_ports,
"environment" : merge({
"EULA" : true,
"SNOOPER_ENABLED" : false,
"TYPE" : "PAPER"
"LOG_TIMESTAMP" : true
"USE_AIKAR_FLAGS" : true
"ENABLE_AUTOSTOP" : true
"AUTOSTOP_TIMEOUT_EST" : 600
"AUTOSTOP_TIMEOUT_INIT" : 600
"VIEW_DISTANCE" : 12
"MAX_PLAYERS" : 15
}, var.minecraft_compose_environment)
"volumes" : [
"${local.minecraft_data_path}:/data"
]
"deploy" : {
"resources" : {
"limits" : merge({}, var.minecraft_compose_limits)
}
}
"restart" : "no"
}, var.minecraft_compose_service_top_level_elements)
}
}))
ec2_user_data = templatefile("./cloud-init/cloud-init.yml", {
timezone = var.instance_timezone
minecraft_data_path = local.minecraft_data_path
device_name = local.device_name
duckdns_script_file_content_b64 = local.duckdns_script_file_content_b64
duckdns_service_file_content_b64 = local.duckdns_service_file_content_b64
minecraft_shutdown_script_file_content_b64 = local.minecraft_shutdown_script_file_content_b64
minecraft_shutdown_service_file_content_b64 = local.minecraft_shutdown_service_file_content_b64
minecraft_shutdown_timer_file_content_b64 = local.minecraft_shutdown_timer_file_content_b64
minecraft_service_file_content_b64 = local.minecraft_service_file_content_b64
minecraft_compose_file_content_b64 = local.minecraft_compose_file_content_b64
})
instance_tags = {
Name = "${local.title} Spot Instance"
"minecraft-spot-discord:related" = true
}
root_volume_tags = {
Name = "${local.title} Root Volume"
}
}
resource "aws_key_pair" "ec2_spot_instance" {
key_name = var.instance_key_pair_name
public_key = var.instance_key_pair_public_key
}
resource "aws_ebs_volume" "minecraft" {
availability_zone = var.subnet_az
type = "gp3"
size = var.minecraft_data_volume_size
iops = 3000
throughput = 125
final_snapshot = true
tags = {
Name = "${local.title} Minecraft Data Volume"
"minecraft-spot-discord:data-volume" : true
}
}
resource "aws_volume_attachment" "attach_minecraft_data_to_instance" {
device_name = local.device_name
volume_id = aws_ebs_volume.minecraft.id
instance_id = module.ec2_spot_instance.spot_instance_id
stop_instance_before_detaching = true
}
module "ec2_spot_instance" {
source = "terraform-aws-modules/ec2-instance/aws"
version = "~> 5.6"
name = "${local.title} Spot Instance"
create_spot_instance = true
spot_wait_for_fulfillment = true
ami = "ami-07a5db12eede6ff87" // Amazon Linux 2023 AMI 2023.4.20240611.0 arm64 HVM kernel-6.1
instance_type = var.instance_type
vpc_security_group_ids = [aws_security_group.spot_instance.id]
subnet_id = module.vpc.public_subnets[0]
// We enable auto IPv4 via subnet settings (map_public_ip_on_launch)
// instead of here to avoid force-replacement when applying while
// the instance is stopped
# associate_public_ip_address = true
# monitoring = true
key_name = aws_key_pair.ec2_spot_instance.key_name
spot_instance_interruption_behavior = "stop"
user_data = local.ec2_user_data
enable_volume_tags = false
// Due to bug in the provider, spot instances and its root volumes are not being tagged automatically
# enable_volume_tags = false
# root_block_device = [{
# tags = {
# Name = "${local.title} Root Volume"
# }
# }]
tags = {
Name = "${local.title} Spot Instance Request"
}
}
resource "aws_ec2_tag" "instance_tags_workaround" {
for_each = local.instance_tags
resource_id = module.ec2_spot_instance.spot_instance_id
key = each.key
value = each.value
}
resource "aws_ec2_tag" "root_volume_tags_workaround" {
for_each = local.root_volume_tags
resource_id = module.ec2_spot_instance.root_block_device[0].volume_id
key = each.key
value = each.value
}