| 1 | # 🤖 The dev box: one Graviton instance for the hibernation-activator proof |
| 2 | # (#550 Part 7's "minimum viable" shape — the ASG comes later; one pet |
| 3 | # instance is enough to prove wake/sleep on real AWS metal). It reads the |
| 4 | # instances bucket via an INSTANCE ROLE — no AWS keys ever land on the box. |
| 5 | |
| 6 | data "aws_ami" "al2023_arm" { |
| 7 | most_recent = true |
| 8 | owners = ["amazon"] |
| 9 | |
| 10 | filter { |
| 11 | name = "name" |
| 12 | values = ["al2023-ami-2023*-arm64"] |
| 13 | } |
| 14 | |
| 15 | filter { |
| 16 | name = "architecture" |
| 17 | values = ["arm64"] |
| 18 | } |
| 19 | } |
| 20 | |
| 21 | resource "aws_key_pair" "dev_box" { |
| 22 | key_name = "eleven-dev-box" |
| 23 | public_key = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAILReNBCz+nwYvJ7x/RfgW/kbvSFe3pzPhOBM1SOqbjSg eleven-dev-box" |
| 24 | } |
| 25 | |
| 26 | variable "ssh_ingress_cidr" { |
| 27 | description = "Where SSH is allowed from (the operator's current IP/32)" |
| 28 | type = string |
| 29 | default = "109.255.206.133/32" |
| 30 | } |
| 31 | |
| 32 | resource "aws_security_group" "dev_box" { |
| 33 | name = "eleven-dev-box" |
| 34 | description = "dev activator box: ssh from the operator, web open" |
| 35 | |
| 36 | ingress { |
| 37 | description = "ssh (operator only)" |
| 38 | from_port = 22 |
| 39 | to_port = 22 |
| 40 | protocol = "tcp" |
| 41 | cidr_blocks = [var.ssh_ingress_cidr] |
| 42 | } |
| 43 | |
| 44 | ingress { |
| 45 | description = "http/https (autocert + serving, for when DNS points here)" |
| 46 | from_port = 80 |
| 47 | to_port = 80 |
| 48 | protocol = "tcp" |
| 49 | cidr_blocks = ["0.0.0.0/0"] |
| 50 | } |
| 51 | |
| 52 | ingress { |
| 53 | description = "https" |
| 54 | from_port = 443 |
| 55 | to_port = 443 |
| 56 | protocol = "tcp" |
| 57 | cidr_blocks = ["0.0.0.0/0"] |
| 58 | } |
| 59 | |
| 60 | egress { |
| 61 | from_port = 0 |
| 62 | to_port = 0 |
| 63 | protocol = "-1" |
| 64 | cidr_blocks = ["0.0.0.0/0"] |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | # The box's identity: object-rw on the instances bucket only, via instance |
| 69 | # profile — the credential-free path every later box in the pool follows. |
| 70 | resource "aws_iam_role" "dev_box" { |
| 71 | name = "eleven-dev-box" |
| 72 | |
| 73 | assume_role_policy = jsonencode({ |
| 74 | Version = "2012-10-17" |
| 75 | Statement = [{ |
| 76 | Action = "sts:AssumeRole" |
| 77 | Effect = "Allow" |
| 78 | Principal = { Service = "ec2.amazonaws.com" } |
| 79 | }] |
| 80 | }) |
| 81 | } |
| 82 | |
| 83 | data "aws_iam_policy_document" "dev_box" { |
| 84 | statement { |
| 85 | sid = "ListInstancesBucket" |
| 86 | actions = ["s3:ListBucket", "s3:ListBucketVersions"] |
| 87 | resources = [aws_s3_bucket.state["instances"].arn] |
| 88 | } |
| 89 | |
| 90 | statement { |
| 91 | sid = "ReadWriteInstanceObjects" |
| 92 | actions = [ |
| 93 | "s3:GetObject", |
| 94 | "s3:PutObject", |
| 95 | "s3:DeleteObject", |
| 96 | "s3:DeleteObjectVersion", |
| 97 | ] |
| 98 | resources = ["${aws_s3_bucket.state["instances"].arn}/*"] |
| 99 | } |
| 100 | } |
| 101 | |
| 102 | resource "aws_iam_role_policy" "dev_box" { |
| 103 | name = "eleven-dev-box-instances-bucket" |
| 104 | role = aws_iam_role.dev_box.id |
| 105 | policy = data.aws_iam_policy_document.dev_box.json |
| 106 | } |
| 107 | |
| 108 | resource "aws_iam_instance_profile" "dev_box" { |
| 109 | name = "eleven-dev-box" |
| 110 | role = aws_iam_role.dev_box.name |
| 111 | } |
| 112 | |
| 113 | resource "aws_instance" "dev_box" { |
| 114 | ami = data.aws_ami.al2023_arm.id |
| 115 | instance_type = "t4g.small" |
| 116 | key_name = aws_key_pair.dev_box.key_name |
| 117 | vpc_security_group_ids = [aws_security_group.dev_box.id] |
| 118 | iam_instance_profile = aws_iam_instance_profile.dev_box.name |
| 119 | |
| 120 | # The instance role's credentials are served by IMDS, so require IMDSv2's |
| 121 | # session tokens: an SSRF or misconfigured proxy on the box can't read the |
| 122 | # role credentials with a bare GET. Hop limit stays at the default 1 — |
| 123 | # nothing here runs in containers. |
| 124 | metadata_options { |
| 125 | http_endpoint = "enabled" |
| 126 | http_tokens = "required" |
| 127 | } |
| 128 | |
| 129 | # encrypted forces a replacement of the original (unencrypted) volume — |
| 130 | # apply with -replace=aws_instance.dev_box; the box is a disposable pet |
| 131 | # (state parks in S3, that's the whole point of the activator proof). |
| 132 | root_block_device { |
| 133 | volume_size = 20 |
| 134 | volume_type = "gp3" |
| 135 | encrypted = true |
| 136 | } |
| 137 | |
| 138 | tags = { |
| 139 | Name = "eleven-dev-box" |
| 140 | } |
| 141 | } |
| 142 | |
| 143 | output "dev_box_ip" { |
| 144 | value = aws_instance.dev_box.public_ip |
| 145 | } |
| 146 | |
amadan