diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..3550a30
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use flake
diff --git a/.github/workflows/flake.yaml b/.github/workflows/flake.yaml
new file mode 100644
index 0000000..c501064
--- /dev/null
+++ b/.github/workflows/flake.yaml
@@ -0,0 +1,44 @@
+name: flake
+
+on:
+  pull_request:
+  push:
+    branches:
+      - main
+
+# env:
+#   CACHIX_BINARY_CACHE: altf4llc-os
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: cachix/install-nix-action@v25
+        with:
+          enable_kvm: true
+      # - uses: cachix/cachix-action@v14
+      #   with:
+      #     authToken: ${{ secrets.ALTF4LLC_CACHIX_AUTH_TOKEN }}
+      #     name: ${{ env.CACHIX_BINARY_CACHE }}
+      - uses: actions/checkout@v4
+      - run: nix develop -c just check
+
+  build:
+    needs:
+      - check
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        profile:
+          - gc-fwd
+          - ecs-node
+    steps:
+      - uses: cachix/install-nix-action@v25
+        with:
+          enable_kvm: true
+      # - uses: cachix/cachix-action@v14
+      #   with:
+      #     authToken: ${{ secrets.ALTF4LLC_CACHIX_AUTH_TOKEN }}
+      #     name: ${{ env.CACHIX_BINARY_CACHE }}
+      - uses: actions/checkout@v4
+      - run: nix develop -c just build "${{ matrix.profile }}"
diff --git a/LICENSE b/LICENSE
index 261eeb9..57bc88a 100644
--- a/LICENSE
+++ b/LICENSE
@@ -199,3 +199,4 @@
    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    See the License for the specific language governing permissions and
    limitations under the License.
+
diff --git a/README.md b/README.md
index 02f0c92..7d36c59 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,91 @@
-# vms-nix
-NixOS virtual machine images for ALT-F4 LLC
+# `vms.nix`
+
+[![License: Apache-2.0](https://img.shields.io/github/license/ALT-F4-LLC/vms.nix
+)](./LICENSE)
+
+NixOS-based VM images for ALT-F4 LLC. These images are built using
+[nixos-generators](https://github.com/nix-community/nixos-generators) and
+Nix flakes.
+
+## Image Details
+
+Every image built from this repository is built with an immutable main disk.
+This means that while 'state' directories (`/home`, `/var/lib`, etc.) are
+writable, the majority of configuration will be static and immutable, packaged
+as part of the Nix store.
+
+There is also an `altf4` user baked into all images that has a list of trusted
+SSH keys on it. This user is for administrative purposes. 
+
+> ![NOTE]
+> On AMIs, the SSH keypair for `altf4` will not be overridden by setting the
+> SSH Key Pair option when provisioning the AMI. That option only applies to
+> the `root` user.
+
+## Layout
+
+Service configuration files land in `modules/mixins`, and generic (global)
+configuration files land in `modules/profiles`, as they are not tied to any
+specific kind or role of image.
+
+```
+vms.nix
+├── flake.lock
+├── flake.nix
+├── justfile
+├── LICENSE
+├── modules
+│   ├── mixins
+│   │   └── Service configuration modules
+│   │       └── default.nix
+│   └── profiles
+│       └── "Base" configuration modules (EC2 extras, base config, etc)
+└── README.md
+```
+
+## Building an Image
+
+To build an image, find its package name in [`flake.nix`](./flake.nix), then
+use `just build` to build it;
+
+```
+$ just build ecs-node
+```
+
+### Publishing an AMI to EC2
+
+> ![NOTE]
+> Using this if you're not a member of ALT-F4 requires some more steps. See
+> [`aws/README.md`](./aws/README.md) for more info.
+
+There is a `just` task for doing this called `publish-ami`. It takes the name
+of the image you want to build as an input, and then carries out the following
+tasks:
+
+- Builds the image with `just build`
+- Uploads the output `.vhd` image to S3
+- Kicks off a snapshot import using the EC2 VM Import/Export service
+- Waits for the snapshot to be fully imported and available
+- Registers an AMI using the snapshot and outputs its ID
+
+NixOS VMs use `/dev/sda1` as their root device name, and that is configured at
+the point the AMI is registered. By default, the images are built on a 4GB disk
+but this can be tweaked if an image does not fit into only 4GB.
+
+All VMs are also configured with the `cachix-agent` installed, and all Amazon
+AMIs are configured with `amazon-ssm-agent` and `amazon-init` to ensure full
+feature compatibility with EC2.
+
+## Contributing
+
+While this is an internal project at ALT-F4, we still welcome contributions
+from the community in case you can spot an improvement or a suggestion!
+
+Feel free to raise PRs and issues against this repository, but also understand
+that as this is an internal piece of tooling, some opinionations in configs
+and/or logic will be present and we may be stubborn with them!
+
+## License
+
+`vms.nix` is licensed under the Apache License Version 2.0. For full license
+terms, see [`LICENSE`](./LICENSE).
diff --git a/aws/README.md b/aws/README.md
new file mode 100644
index 0000000..98209be
--- /dev/null
+++ b/aws/README.md
@@ -0,0 +1,13 @@
+# AWS
+
+To use this repository with AWS, you need the following:
+
+- An S3 bucket you have write access to
+- A role called `vmimport` (exactly), using the included
+  [trust policy](./vmimport_trust_policy.json) and
+  [permissions](./vmimport_role_policy.json).
+
+See the links above for what those policies should be.
+
+Once done, you'll need to fork this repo and change the `ami_bucket` variable
+in the [`justfile`](../justfile) to the name of your bucket.
diff --git a/aws/vmimport_role_policy.json b/aws/vmimport_role_policy.json
new file mode 100644
index 0000000..d2da54b
--- /dev/null
+++ b/aws/vmimport_role_policy.json
@@ -0,0 +1,27 @@
+{
+    "Version": "2012-10-17",
+    "Statement": [
+        {
+            "Effect": "Allow",
+            "Action": [
+                "s3:GetBucketLocation",
+                "s3:GetObject",
+                "s3:ListBucket"
+            ],
+            "Resource": [
+                "arn:aws:s3:::altf4llc-hayden-test-nix-amis",
+                "arn:aws:s3:::altf4llc-hayden-test-nix-amis/*"
+            ]
+        },
+        {
+            "Effect": "Allow",
+            "Action": [
+                "ec2:ModifySnapshotAttribute",
+                "ec2:CopySnapshot",
+                "ec2:RegisterImage",
+                "ec2:Describe*"
+            ],
+            "Resource": "*"
+        }
+    ]
+}
diff --git a/aws/vmimport_trust_policy.json b/aws/vmimport_trust_policy.json
new file mode 100644
index 0000000..2bfbbde
--- /dev/null
+++ b/aws/vmimport_trust_policy.json
@@ -0,0 +1,17 @@
+{
+    "Version": "2012-10-17",
+    "Statement": [
+        {
+            "Effect": "Allow",
+            "Principal": {
+                "Service": "vmie.amazonaws.com"
+            },
+            "Action": "sts:AssumeRole",
+            "Condition": {
+                "StringEquals": {
+                    "sts:Externalid": "vmimport"
+                }
+            }
+        }
+    ]
+}
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..b50ddcc
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,121 @@
+{
+  "nodes": {
+    "flake-parts": {
+      "inputs": {
+        "nixpkgs-lib": "nixpkgs-lib"
+      },
+      "locked": {
+        "lastModified": 1712014858,
+        "narHash": "sha256-sB4SWl2lX95bExY2gMFG5HIzvva5AVMJd4Igm+GpZNw=",
+        "owner": "hercules-ci",
+        "repo": "flake-parts",
+        "rev": "9126214d0a59633752a136528f5f3b9aa8565b7d",
+        "type": "github"
+      },
+      "original": {
+        "id": "flake-parts",
+        "type": "indirect"
+      }
+    },
+    "nixlib": {
+      "locked": {
+        "lastModified": 1712450863,
+        "narHash": "sha256-K6IkdtMtq9xktmYPj0uaYc8NsIqHuaAoRBaMgu9Fvrw=",
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "rev": "3c62b6a12571c9a7f65ab037173ee153d539905f",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixpkgs.lib",
+        "type": "github"
+      }
+    },
+    "nixos-generators": {
+      "inputs": {
+        "nixlib": "nixlib",
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1713783234,
+        "narHash": "sha256-3yh0nqI1avYUmmtqqTW3EVfwaLE+9ytRWxsA5aWtmyI=",
+        "owner": "nix-community",
+        "repo": "nixos-generators",
+        "rev": "722b512eb7e6915882f39fff0e4c9dd44f42b77e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-community",
+        "repo": "nixos-generators",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1714076141,
+        "narHash": "sha256-Drmja/f5MRHZCskS6mvzFqxEaZMeciScCTFxWVLqWEY=",
+        "owner": "nixos",
+        "repo": "nixpkgs",
+        "rev": "7bb2ccd8cdc44c91edba16c48d2c8f331fb3d856",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nixos",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-lib": {
+      "locked": {
+        "dir": "lib",
+        "lastModified": 1711703276,
+        "narHash": "sha256-iMUFArF0WCatKK6RzfUJknjem0H9m4KgorO/p3Dopkk=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "d8fe5e6c92d0d190646fb9f1056741a229980089",
+        "type": "github"
+      },
+      "original": {
+        "dir": "lib",
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-parts": "flake-parts",
+        "nixos-generators": "nixos-generators",
+        "nixpkgs": "nixpkgs",
+        "srvos": "srvos"
+      }
+    },
+    "srvos": {
+      "inputs": {
+        "nixpkgs": [
+          "nixpkgs"
+        ]
+      },
+      "locked": {
+        "lastModified": 1714143163,
+        "narHash": "sha256-WMAziIBkwX//WUGxH49ZSm0yaPS6/PvNWUMMut8unm0=",
+        "owner": "numtide",
+        "repo": "srvos",
+        "rev": "71a8e8ab6e4763714d20c22f42ba8860369a1508",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "srvos",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..2ce83ca
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,54 @@
+{
+  inputs = {
+    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+
+    nixos-generators.url = "github:nix-community/nixos-generators";
+    nixos-generators.inputs.nixpkgs.follows = "nixpkgs";
+
+    srvos.url = "github:numtide/srvos";
+    srvos.inputs.nixpkgs.follows = "nixpkgs";
+  };
+
+  outputs = inputs @ {flake-parts, ...}:
+    flake-parts.lib.mkFlake {inherit inputs;} {
+      systems = ["x86_64-linux" "aarch64-linux"];
+
+      perSystem = {
+        pkgs,
+        system,
+        ...
+      }: let
+        inherit (pkgs) awscli2 just;
+      in {
+        devShells.default = pkgs.mkShell {
+          buildInputs = [awscli2 just];
+        };
+
+        formatter = pkgs.alejandra;
+
+        packages = {
+          gc-fwd = inputs.nixos-generators.nixosGenerate {
+            inherit system;
+            modules = [
+              inputs.srvos.nixosModules.server
+              inputs.srvos.nixosModules.hardware-amazon
+              ./modules/profiles/common.nix
+              ./modules/mixins/alloy-forwarder
+            ];
+            format = "amazon"; # ami
+          };
+
+          ecs-node = inputs.nixos-generators.nixosGenerate {
+            inherit system;
+            modules = [
+              inputs.srvos.nixosModules.server
+              inputs.srvos.nixosModules.hardware-amazon
+              ./modules/profiles/common.nix
+              ./modules/mixins/ecs-agent
+            ];
+            format = "amazon"; # ami
+          };
+        };
+      };
+    };
+}
diff --git a/justfile b/justfile
new file mode 100644
index 0000000..f3d2a93
--- /dev/null
+++ b/justfile
@@ -0,0 +1,40 @@
+ami_bucket := "altf4llc-nix-ami-uploads"
+
+check:
+  nix flake check
+
+build profile:
+  nix build --json --print-build-logs --no-link '.#{{profile}}'
+
+publish-ami profile:
+  #!/usr/bin/env bash
+  set -euo pipefail
+  BUILD_TIME=$(date +%s)
+  IMAGE_NAME="altf4llc-{{profile}}-$BUILD_TIME"
+
+  DERIVATION=$(just build {{profile}})
+  OUTPUT=$(echo "$DERIVATION" | jq -r '.[].outputs.out')
+  IMAGE_PATH=$(cd "$OUTPUT" && ls *.vhd)
+
+  echo "Uploading VHD to S3."
+  aws s3 cp "$OUTPUT/$IMAGE_PATH" "s3://{{ami_bucket}}/$IMAGE_NAME.vhd"
+
+  echo "Starting snapshot import."
+  TASK_ID=$(aws ec2 import-snapshot --disk-container "Format=VHD,UserBucket={S3Bucket={{ami_bucket}},S3Key=$IMAGE_NAME.vhd}" --output json | jq -r ".ImportTaskId")
+
+  echo "Waiting for snapshot import to complete."
+  until [[ $(aws ec2 describe-import-snapshot-tasks --import-task-ids "$TASK_ID" --output json | jq -r '.ImportSnapshotTasks[].SnapshotTaskDetail.Status') == "completed" ]]; do
+    echo "Snapshot is not imported yet, waiting..."
+    sleep 5
+  done
+
+  SNAPSHOT_ID=$(aws ec2 describe-import-snapshot-tasks --import-task-ids "$TASK_ID" --output json | jq -r '.ImportSnapshotTasks[].SnapshotTaskDetail.SnapshotId')
+
+  echo "New snapshot is $SNAPSHOT_ID."
+
+  AMI_ID=$(aws ec2 register-image --architecture x86_64 --ena-support --name "$IMAGE_NAME" --description "A NixOS AMI: {{profile}}" --block-device-mappings "DeviceName=/dev/sda1,Ebs={SnapshotId=$SNAPSHOT_ID}" --root-device-name /dev/sda1 | jq .ImageId)
+
+  echo "AMI is registered: $AMI_ID"
+
+  echo "Cleaning up image VHD from bucket"
+  aws s3 rm "s3://{{ami_bucket}}/$IMAGE_NAME.vhd"
diff --git a/modules/mixins/alloy-forwarder/config.alloy b/modules/mixins/alloy-forwarder/config.alloy
new file mode 100644
index 0000000..c37d37d
--- /dev/null
+++ b/modules/mixins/alloy-forwarder/config.alloy
@@ -0,0 +1,100 @@
+import.git "gcloud" {
+  repository     = "https://github.com/grafana/alloy-modules.git"
+  path           = "modules/cloud/grafana/cloud/module.river"
+  revision       = "main"
+  pull_frequency = "0s"
+}
+
+gcloud.stack "default" {
+    stack_name = env("GRAFANA_CLOUD_STACK")
+    token      = env("GRAFANA_CLOUD_TOKEN")
+}
+
+prometheus.receive_http "forward" {
+  http {
+    listen_address = "0.0.0.0"
+    listen_port = 9090
+  }
+  forward_to = [
+    grafana_cloud.stack.receivers.metrics,
+  ]
+}
+
+prometheus.scrape "linux_node" {
+  targets = prometheus.exporter.unix.node.targets
+  forward_to = [
+    grafana_cloud.stack.receivers.metrics,
+  ]
+}
+
+prometheus.exporter.unix "node" {
+}
+
+loki.source.api "receive" {
+    http {
+        listen_address = "0.0.0.0"
+        listen_port = 3100
+    }
+    forward_to = [
+      grafana_cloud.stack.receivers.logs,
+    ]
+}
+
+loki.relabel "journal" {
+  forward_to = []
+
+  rule {
+    source_labels = ["__journal__systemd_unit"]
+    target_label  = "unit"
+  }
+  rule {
+    source_labels = ["__journal__boot_id"]
+    target_label  = "boot_id"
+  }
+  rule {
+    source_labels = ["__journal__transport"]
+    target_label  = "transport"
+  }
+  rule {
+    source_labels = ["__journal_priority_keyword"]
+    target_label  = "level"
+  }
+  rule {
+    source_labels = ["__journal__hostname"]
+    target_label  = "instance"
+  }
+}
+
+loki.source.journal "read" {
+  forward_to = [
+    grafana_cloud.stack.receivers.logs,
+  ]
+  relabel_rules = loki.relabel.journal.rules
+  labels = {
+    "job" = "integrations/node_exporter",
+  }
+}
+
+otelcol.exporter.prometheus "to_prometheus" {
+  forward_to = [
+    grafana_cloud.stack.receivers.metrics,
+  ]
+}
+
+otelcol.exporter.loki "to_loki" {
+  forward_to = [
+    grafana_cloud.stack.receivers.logs,
+  ]
+}
+
+otelcol.receiver.otlp "default" {
+  grpc {}
+  http {}
+  output {
+    metrics = [otelcol.exporter.prometheus.to_prometheus.input]
+    logs = [otelcol.exporter.loki.to_loki.input]
+    traces = [grafana_cloud.stack.receivers.traces]
+  }
+}
+
+// vim:ft=hcl
diff --git a/modules/mixins/alloy-forwarder/default.nix b/modules/mixins/alloy-forwarder/default.nix
new file mode 100644
index 0000000..83e3d34
--- /dev/null
+++ b/modules/mixins/alloy-forwarder/default.nix
@@ -0,0 +1,14 @@
+{lib, ...}: {
+  imports = [../alloy];
+
+  # Only change from normal Alloy mixin is an overridden config file
+  environment.etc."alloy/config.alloy".source = lib.mkForce ./config.alloy;
+
+  virtualisation.oci-containers.containers.alloy = {
+    environmentFiles = ["/run/keys/grafana-cloud"];
+
+    environment = {
+      GRAFANA_CLOUD_STACK = "altf4llc";
+    };
+  };
+}
diff --git a/modules/mixins/alloy/config.alloy b/modules/mixins/alloy/config.alloy
new file mode 100644
index 0000000..cc7c5ee
--- /dev/null
+++ b/modules/mixins/alloy/config.alloy
@@ -0,0 +1,69 @@
+# We ship everything over OTLP
+otelcol.exporter.otlp "gc-fwd" {
+  client {
+    endpoint = "gc-fwd.altf4.internal:4317"
+    tls {
+      insecure             = true
+    }
+  }
+}
+
+# Convert Prometheus data for OTLP
+otelcol.receiver.prometheus "default" {
+  output {
+    metrics = [otelcol.exporter.otlp.gc-fwd.input]
+  }
+}
+
+# Convert Loki data for OTLP
+otelcol.receiver.loki "default" {
+  output {
+    logs = [otelcol.exporter.otlp.gc-fwd.input]
+  }
+}
+
+# Extract Systemd unit from journal entry
+loki.relabel "journal" {
+  forward_to = []
+
+  rule {
+    source_labels = ["__journal__systemd_unit"]
+    target_label  = "unit"
+  }
+}
+
+# Fetch journal entries
+loki.source.journal "journal" {
+  forward_to    = [otelcol.receiver.loki.default.receiver]
+  relabel_rules = loki.relabel.journal.rules
+  labels        = {component = "loki.source.journal"}
+}
+
+# Set instance label to the hostname
+prometheus.relabel "instance" {
+  forward_to = [otelcol.receiver.prometheus.default.receiver]
+  rule {
+    target_label = "instance"
+    replacement  = env("HOSTNAME")
+  }
+}
+
+# Export system metrics
+prometheus.exporter.unix "host" {
+  procfs_path    = "/host/proc"
+  sysfs_path     = "/host/sys"
+  rootfs_path    = "/rootfs"
+  udev_data_path = "/host/run/udev/data"
+
+  filesystem {
+    mount_points_exclude = "^/(sys|proc|dev|host|etc)($$|/)"
+  }
+}
+
+# Scrape system metrics
+prometheus.scrape "host" {
+  targets    = prometheus.exporter.unix.host.targets
+  forward_to = [prometheus.relabel.instance.receiver]
+}
+
+// vim:ft=hcl
diff --git a/modules/mixins/alloy/default.nix b/modules/mixins/alloy/default.nix
new file mode 100644
index 0000000..b19c898
--- /dev/null
+++ b/modules/mixins/alloy/default.nix
@@ -0,0 +1,49 @@
+{config, ...}: {
+  # see TODO further down
+  imports = [../docker];
+
+  environment.etc."alloy/config.alloy" = {
+    source = ./config.alloy;
+    mode = "0440";
+    user = "root";
+  };
+
+  # TODO: Replace this once there's an Alloy package merged into Nixpkgs
+  # https://github.com/NixOS/nixpkgs/pull/306048
+  virtualisation.oci-containers.containers.alloy = {
+    autoStart = true;
+    image = "grafana/alloy:v1.0.0";
+
+    user = "root";
+
+    ports = [
+      "12345:12345"
+    ];
+
+    cmd = [
+      "run"
+      "--server.http.listen-addr=0.0.0.0:12345"
+      "--storage.path=/var/lib/alloy/data"
+      "--stability.level=public-preview"
+
+      # we give a path to the directory so it loads every file, instead of
+      # one config file. this allows us to add extra configuration in other
+      # mixins.
+      "/etc/alloy"
+    ];
+
+    volumes = [
+      # Alloy
+      "/var/log:/var/log:ro"
+      "/etc/alloy:/etc/alloy:ro"
+
+      "/var/lib/alloy/data"
+
+      # Node Exporter
+      "/proc:/host/proc:ro"
+      "/sys:/host/sys:ro"
+      "/run/udev/data:/host/run/udev/data:ro"
+      "/:/rootfs:ro"
+    ];
+  };
+}
diff --git a/modules/mixins/docker/default.nix b/modules/mixins/docker/default.nix
new file mode 100644
index 0000000..db1a85e
--- /dev/null
+++ b/modules/mixins/docker/default.nix
@@ -0,0 +1,4 @@
+{...}: {
+  virtualisation.docker.enable = true;
+  virtualisation.oci-containers.backend = "docker";
+}
diff --git a/modules/mixins/ecs-agent/config.alloy b/modules/mixins/ecs-agent/config.alloy
new file mode 100644
index 0000000..c5f81fc
--- /dev/null
+++ b/modules/mixins/ecs-agent/config.alloy
@@ -0,0 +1,33 @@
+prometheus.exporter.cadvisor "cadvisor" {
+  docker_host      = "unix:///var/run/docker.sock"
+  storage_duration = "5m"
+}
+
+prometheus.scrape "cadvisor" {
+  targets         = prometheus.exporter.cadvisor.cadvisor.targets
+  forward_to      = [prometheus.relabel.instance.receiver]
+  scrape_interval = "30s"
+}
+
+prometheus.scrape "ecs-agent" {
+  targets = [
+    {"__address__" = "127.0.0.1:51680", instance = env("HOSTNAME")},
+  ]
+
+  forward_to      = [prometheus.relabel.instance.receiver]
+  scrape_interval = "30s"
+}
+
+// Run a local OpenTelemetry collector
+otelcol.receiver.otlp "otlp" {
+  grpc {}
+  http {}
+
+  output {
+    metrics = [prometheus.relabel.instance.receiver]
+    logs    = [otelcol.receiver.loki.default.receiver]
+    traces  = [otelcol.exporter.otlp.gc-fwd.input]
+  }
+}
+
+// vim:ft=hcl
diff --git a/modules/mixins/ecs-agent/default.nix b/modules/mixins/ecs-agent/default.nix
new file mode 100644
index 0000000..954736b
--- /dev/null
+++ b/modules/mixins/ecs-agent/default.nix
@@ -0,0 +1,55 @@
+{pkgs, ...}: {
+  imports = [
+    ../docker
+    ../alloy
+  ];
+
+  boot.kernel.sysctl."net.ipv4.conf.all.route_localnet" = 1;
+
+  networking.firewall.logRefusedConnections = true;
+  networking.useDHCP = true;
+
+  networking.firewall.extraCommands = ''
+    iptables -t nat -A PREROUTING -p tcp -d 169.254.170.2 --dport 80 -j DNAT --to-destination 127.0.0.1:51679
+    iptables -t nat -A OUTPUT -d 169.254.170.2 -p tcp -m tcp --dport 80 -j REDIRECT --to-ports 51679
+  '';
+
+  virtualisation.oci-containers.containers.ecs-agent = {
+    autoStart = true;
+    image = "public.ecr.aws/ecs/amazon-ecs-agent:v1.82.3";
+
+    ports = [
+      "127.0.0.1:51678:51678" # ecs metadata service
+      "127.0.0.1:51680:51680" # prometheus metrics
+    ];
+
+    extraOptions = [
+      "--net=host"
+    ];
+
+    environmentFiles = ["/run/keys/ecs.config"];
+    environment = {
+      ECS_LOGFILE = "/log/ecs-agent.log";
+      ECS_LOGLEVEL = "info";
+      ECS_DATADIR = "/data";
+      ECS_UPDATES_ENABLED = "false";
+      ECS_AVAILABLE_LOGGING_DRIVERS = "[\"journald\"]";
+      ECS_ENABLE_TASK_IAM_ROLE = "true";
+      ECS_ENABLE_SPOT_INSTANCE_DRAINING = "true";
+    };
+
+    volumes = [
+      "/var/run/docker.sock:/var/run/docker.sock"
+
+      "/var/log/ecs/:/log"
+      "/var/lib/ecs/data:/data"
+    ];
+  };
+
+  # Monitoring
+  environment.etc."alloy/ecs-agent.alloy" = {
+    source = ./config.alloy;
+    mode = "0440";
+    user = "root";
+  };
+}
diff --git a/modules/profiles/common.nix b/modules/profiles/common.nix
new file mode 100644
index 0000000..0ed27e6
--- /dev/null
+++ b/modules/profiles/common.nix
@@ -0,0 +1,25 @@
+{...}: {
+  services.cachix-agent.enable = true;
+
+  boot.loader.efi.canTouchEfiVariables = true;
+
+  services.openssh.enable = true;
+
+  security.sudo.wheelNeedsPassword = false;
+
+  security.auditd.enable = true;
+  security.audit.enable = true;
+  security.audit.rules = [
+    "-a exit,always -F arch=b64 -S execve"
+  ];
+
+  users.users.altf4 = {
+    isNormalUser = true;
+    extraGroups = ["wheel"];
+    openssh.authorizedKeys.keys = [
+      "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIDkhuhfzyg7R+O62XSktHufGmmhy6FNDi/NuPPJt7bI+"
+    ];
+  };
+
+  system.stateVersion = "24.05";
+}