Add support for docker based droplet deployment

ooni · Sep 24, 2024 · ead1b48 · ead1b48
1 parent 327fd0e
commit ead1b48
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diff --git a/tf/modules/ooni_th_droplet/main.tf b/tf/modules/ooni_th_droplet/main.tf
@@ -36,3 +36,32 @@ resource "digitalocean_droplet" "ooni_th" {
     create_before_destroy = true
   }
 }
+
+data "cloudinit_config" "ooni_th_docker" {
+  gzip          = false
+  base64_encode = false
+
+  part {
+    filename     = "init.cfg"
+    content_type = "text/cloud-config"
+    content = templatefile("${path.module}/templates/cloud-init-docker.yml", {
+      monitoring_ip = "5.9.112.244",
+      deployer_key  = var.deployer_key
+    })
+  }
+}
+
+resource "digitalocean_droplet" "ooni_th_docker" {
+  image     = "ubuntu-24-04-x64"
+  name      = "${var.name}-docker-${var.stage}-${count.index}"
+  region    = var.instance_location
+  size      = var.instance_size
+  ipv6      = true
+  ssh_keys  = var.ssh_keys
+  user_data = data.cloudinit_config.ooni_th_docker.rendered
+  count     = var.droplet_count
+
+  lifecycle {
+    create_before_destroy = true
+  }
+}
diff --git a/tf/modules/ooni_th_droplet/templates/cloud-init-docker.yml b/tf/modules/ooni_th_droplet/templates/cloud-init-docker.yml
@@ -0,0 +1,154 @@
+apt:
+  sources:
+    docker.list:
+      source: "deb [arch=amd64 signed-by=$KEY_FILE] https://download.docker.com/linux/ubuntu $RELEASE stable"
+      key: |
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+        -----END PGP PUBLIC KEY BLOCK-----
+package_update: true
+packages:
+  - docker-ce
+  - docker-ce-cli
+  - containerd.io
+  - docker-buildx-plugin
+  - docker-compose-plugin
+  - nginx
+
+users:
+  - name: deployer
+    ssh-authorized-keys:
+      - ${deployer_key}
+    sudo: ["ALL=(ALL) NOPASSWD:ALL"]
+    groups:
+      - sudo
+      - docker
+    shell: /bin/bash
+
+write_files:
+  - path: /etc/ssh/sshd_config
+    content: |
+      Port 2222
+      Protocol 2
+      PermitRootLogin no
+      PermitEmptyPasswords no
+      PasswordAuthentication no
+      KbdInteractiveAuthentication no
+      UsePAM yes
+      PubkeyAuthentication yes
+      RSAAuthentication yes
+      X11Forwarding no
+      PrintMotd no
+      AcceptEnv LANG LC_*
+      AllowUsers deployer
+
+  - path: /etc/nginx/sites-available/default
+    content: |
+      proxy_cache_path /var/cache/nginx levels=1:2 keys_zone=thcache:100M
+                      max_size=5g inactive=24h use_temp_path=off;
+
+      server {
+        listen 80;
+        server_name _;
+        gzip on;
+        resolver 127.0.0.1;
+        # local test helper
+        location / {
+            proxy_set_header X-Forwarded-Proto $scheme;
+            proxy_read_timeout 900;
+            proxy_pass http://127.0.0.1:8080;
+
+            proxy_cache thcache;
+            proxy_cache_min_uses 1;
+            proxy_cache_lock on;
+            proxy_cache_lock_timeout 30;
+            proxy_cache_lock_age 30;
+            proxy_cache_use_stale error timeout invalid_header updating;
+            # Cache POST without headers set by the test helper!
+            proxy_cache_methods POST;
+            proxy_cache_key "$request_uri|$request_body";
+            proxy_cache_valid 200 10m;
+            proxy_cache_valid any 0;
+            add_header X-Cache-Status $upstream_cache_status;
+        }
+
+      server {
+        listen 9001;
+        server_name localhost;
+
+        allow ${monitoring_ip};
+        deny all;
+
+        location = /metrics {
+          proxy_pass http://127.0.0.1:9091;
+        }
+      }
+
+runcmd:
+  - ufw default deny incoming
+  - ufw default allow outgoing
+  - ufw allow 2222/tcp
+  - ufw allow 80/tcp
+  - ufw allow 443/tcp
+  - ufw allow from ${monitoring_ip} proto tcp to any port 443
+  - ufw enable
+  - service nginx restart
diff --git a/tf/modules/ooni_th_droplet/variables.tf b/tf/modules/ooni_th_droplet/variables.tf
@@ -26,3 +26,7 @@ variable "droplet_count" {
 variable "ssh_keys" {
   type = list(string)
 }
+
+variable "deployer_key" {
+  type = string
+}