Fix: Specify ECS Task Definition to run ARM64 arch to avoid failures

[smkjason]

The tailscale image does not support X86 architecture. The default may be different for different AWS regions but in my case, it spins up the X86 architecture machine and causes the image to fail during execution. ARM64 arch is known to be more cost-efficient as well.

We can add the following block under ecs_task_definition to avoid this.

resource "aws_ecs_task_definition" "tailscale" {
  family                   = "${var.vpc}-tailscale"
  requires_compatibilities = ["FARGATE"]
  network_mode             = "awsvpc"
  cpu                      = "256" # 0.25 vCPU (256/1024)
  ...

  runtime_platform {
    operating_system_family = "LINUX"
    cpu_architecture        = "ARM64"
  }
}

[dhermes]

SGTM, do you want to send a PR?

[smkjason]

Yea sure, I'll create some PRs sometime soon.

[cablespaghetti]

The tailscale image does not support X86 architecture. The default may be different for different AWS regions but in my case, it spins up the X86 architecture machine and causes the image to fail during execution. ARM64 arch is known to be more cost-efficient as well.

We can add the following block under ecs_task_definition to avoid this.

resource "aws_ecs_task_definition" "tailscale" {
  family                   = "${var.vpc}-tailscale"
  requires_compatibilities = ["FARGATE"]
  network_mode             = "awsvpc"
  cpu                      = "256" # 0.25 vCPU (256/1024)
  ...

  runtime_platform {
    operating_system_family = "LINUX"
    cpu_architecture        = "ARM64"
  }
}

When you say the image does not support X86, do you mean that the image you have pushed to your ECR is an ARM64 image? The one on docker hub does seem to support a number of different architectures.