feat: update compose submodule for ollama-gfx906 (v0.23.2) + add Dockerfile

Reviewed-on: #33

AGENTS.md

@@ -5,6 +5,7 @@ This document outlines the development conventions for this NixOS-based infrastr
 ## Build & Deployment
 
 - **Build/Deploy:** Use `nixos-rebuild switch --flake .#<hostname>` to build and deploy the configuration for a specific host.
+- **CRITICAL — Validate before pushing:** Always `nix build --no-link '.#nixosConfigurations.<hostname>.config.system.build.toplevel'` (or `nh os build`) and confirm it succeeds before pushing any changes. Never push untested NixOS configs.
 - **Development Shell:** Activate the development environment with `nix develop`.
 
 ## Linting & Formatting

assets/ollama/Dockerfile

@@ -0,0 +1,106 @@
+# ollama-gfx906/Dockerfile
+#
+# Custom ollama image with ROCm 6.1 + gfx906 (MI50) support.
+# The official ollama/rocm image ships ROCm 7.2 which dropped gfx906.
+# This uses v0.23.2's native CMake build system with AMDGPU_TARGETS including gfx906.
+#
+# Build: docker build -t ollama/ollama:rocm-gfx906 ai/ollama
+
+FROM rocm/dev-ubuntu-22.04:6.1.2-complete AS builder
+
+# Build dependencies (CMake, Ninja, Go)
+ARG CMAKEVERSION=3.31.2
+ARG NINJAVERSION=1.12.1
+ARG GOLANG_VERSION=1.22.0
+
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
+    curl git ccache build-essential pkg-config unzip \
+    && rm -rf /var/lib/apt/lists/*
+
+# Install CMake from official binaries
+RUN curl -fsSL https://github.com/Kitware/CMake/releases/download/v${CMAKEVERSION}/cmake-${CMAKEVERSION}-linux-x86_64.tar.gz \
+    | tar xz -C /usr/local --strip-components 1
+
+# Install Ninja
+RUN curl -fsSL -o /tmp/ninja.zip \
+    https://github.com/ninja-build/ninja/releases/download/v${NINJAVERSION}/ninja-linux.zip \
+    && unzip /tmp/ninja.zip -d /usr/local/bin && rm /tmp/ninja.zip
+
+# Install Go
+RUN curl -fsSL https://go.dev/dl/go${GOLANG_VERSION}.linux-amd64.tar.gz \
+    | tar xz -C /usr/local
+ENV PATH=/usr/local/go/bin:$PATH
+
+ARG OLLAMA_VERSION=v0.23.2
+RUN git clone --depth 1 --branch ${OLLAMA_VERSION} https://github.com/ollama/ollama.git /build
+WORKDIR /build
+
+# ROCm paths
+ENV HIP_PATH=/opt/rocm
+ENV ROCM_PATH=/opt/rocm
+ENV CMAKE_GENERATOR=Ninja
+ENV LDFLAGS=-s
+
+# Step 1: Build CPU backends with GCC (no ROCm preset)
+# Pre-set CMAKE_HIP_COMPILER="" to prevent check_language(HIP) from
+# finding a HIP compiler (it searches /opt/rocm even without PATH).
+# Remove /opt/rocm from PATH to prevent find_program from finding hipcc.
+RUN mkdir -p build-cpu && \
+    PATH=/usr/local/go/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin \
+    cmake -B build-cpu -DCMAKE_BUILD_TYPE=Release \
+      -DCMAKE_HIP_COMPILER="" \
+      -DCMAKE_INSTALL_PREFIX=/build/dist && \
+    cmake --build build-cpu --target ggml-cpu -- -l $(nproc) && \
+    cmake --install build-cpu --component CPU --strip && \
+    echo "=== CPU install ===" && \
+    (find /build/dist/lib/ollama -type f -o -type l 2>&1 | head -20 || echo "empty")
+
+# Step 2: Build HIP backend with ROCm preset + gfx906 target only
+# The ROCm 6 preset enables HIP language detection (enable_language(HIP))
+# which ensures GPU kernels are properly compiled for gfx906.
+# OLLAMA_RUNNER_DIR=rocm from the preset, so HIP goes to lib/ollama/rocm/
+# Need CMAKE_PREFIX_PATH so find_package(hip) finds hip-config.cmake
+# at /opt/rocm/lib/cmake/hip/hip-config.cmake.
+RUN mkdir -p build-hip && \
+    cmake -B build-hip \
+      --preset 'ROCm 6' \
+      -DAMDGPU_TARGETS="gfx906:xnack-" \
+      -DCMAKE_BUILD_TYPE=Release \
+      -DCMAKE_PREFIX_PATH="/opt/rocm" && \
+    cmake --build build-hip --target ggml-hip -- -l $(nproc) && \
+    cmake --install build-hip --component HIP --strip && \
+    echo "=== HIP install ===" && \
+    find /build/dist/lib/ollama -type f -o -type l | head -20
+
+# Step 3: Build Go binary (GCC for CGo linking)
+ENV CGO_ENABLED=1
+RUN go build -trimpath -ldflags="-X=github.com/ollama/ollama/version.Version=${OLLAMA_VERSION}" -o /build/dist/ollama .
+
+# ---------- Runtime image ----------
+FROM ubuntu:24.04
+
+RUN apt-get update && DEBIAN_FRONTEND=noninteractive apt-get install -y \
+    ca-certificates curl libstdc++6 libgomp1 libvulkan1 libopenblas0 \
+    && rm -rf /var/lib/apt/lists/*
+
+# Copy ROCm 6.1 runtime libraries
+# These are needed at runtime by ggml-hip via LD_LIBRARY_PATH
+COPY --from=builder /opt/rocm/lib/ /opt/rocm/lib/
+COPY --from=builder /opt/rocm/share/ /opt/rocm/share/
+
+# Copy ollama binary + all backends (CPU + HIP)
+# CPU install:  /build/dist/lib/ollama/libggml-*.so
+# HIP install:  /build/dist/lib/ollama/rocm/libggml-hip.so
+COPY --from=builder /build/dist/ollama /usr/bin/ollama
+COPY --from=builder /build/dist/lib/ollama/ /usr/lib/ollama/
+
+RUN ldconfig
+
+ENV LD_LIBRARY_PATH=/opt/rocm/lib:/usr/lib/ollama/rocm:/usr/lib/ollama
+ENV HSA_OVERRIDE_GFX_VERSION=9.0.6
+ENV HCC_AMDGPU_TARGET=gfx906
+ENV HSA_ENABLE_SDMA=0
+
+EXPOSE 11434
+ENTRYPOINT ["/bin/ollama"]
+CMD ["serve"]

docker/hermes/Dockerfile.full

@@ -1,71 +0,0 @@
-FROM ghcr.io/astral-sh/uv:0.11.6-python3.13-trixie@sha256:b3c543b6c4f23a5f2df22866bd7857e5d304b67a564f4feab6ac22044dde719b AS uv_source
-FROM tianon/gosu:1.19-trixie@sha256:3b176695959c71e123eb390d427efc665eeb561b1540e82679c15e992006b8b9 AS gosu_source
-FROM debian:13.4
-
-# Disable Python stdout buffering to ensure logs are printed immediately
-ENV PYTHONUNBUFFERED=1
-
-# Store Playwright browsers outside the volume mount so the build-time
-# install survives the /opt/data volume overlay at runtime.
-ENV PLAYWRIGHT_BROWSERS_PATH=/opt/hermes/.playwright
-
-# Install system dependencies in one layer, clear APT cache
-# tini reaps orphaned zombie processes (MCP stdio subprocesses, git, bun, etc.)
-# that would otherwise accumulate when hermes runs as PID 1. See #15012.
-RUN apt-get update && \
-    apt-get install -y --no-install-recommends \
-        build-essential nodejs npm python3 ripgrep ffmpeg gcc python3-dev libffi-dev procps git openssh-client docker-cli tini \
-        curl poppler-utils imagemagick \
-        chromium xvfb fonts-noto-color-emoji fonts-unifont fonts-liberation fonts-ipafont-gothic fonts-wqy-zenhei fonts-tlwg-loma-otf fonts-freefont-ttf \
-        libasound2t64 libatk-bridge2.0-0t64 libatk1.0-0t64 libatspi2.0-0t64 libcairo2 libcups2t64 libdbus-1-3 libdrm2 libgbm1 libglib2.0-0t64 libnspr4 libnss3 libpango-1.0-0 libx11-6 libxcb1 libxcomposite1 libxdamage1 libxext6 libxfixes3 libxkbcommon0 libxrandr2 \
-        texlive-latex-base texlive-latex-extra texlive-fonts-recommended texlive-xetex texlive-science \
-        qemu-user-static binfmt-support qemu-user-binfmt \
-        emacs-nox \
-        libportaudio2 && \
-    rm -rf /var/lib/apt/lists/*
-
-# Non-root user for runtime; UID can be overridden via HERMES_UID at runtime
-RUN useradd -u 10000 -m -d /opt/data hermes
-
-COPY --chmod=0755 --from=gosu_source /gosu /usr/local/bin/
-COPY --chmod=0755 --from=uv_source /usr/local/bin/uv /usr/local/bin/uvx /usr/local/bin/
-
-WORKDIR /opt/hermes
-
-# ---------- Layer-cached dependency install ----------
-# Copy only package manifests first so npm install + Playwright are cached
-# unless the lockfiles themselves change.
-COPY package.json package-lock.json ./
-COPY web/package.json web/package-lock.json web/
-
-RUN npm install --prefer-offline --no-audit && \
-    npx playwright install --with-deps chromium --only-shell && \
-    (cd web && npm install --prefer-offline --no-audit) && \
-    npm cache clean --force
-
-# ---------- Source code ----------
-# .dockerignore excludes node_modules, so the installs above survive.
-COPY --chown=hermes:hermes . .
-
-# Build web dashboard (Vite outputs to hermes_cli/web_dist/)
-RUN cd web && npm run build
-
-# ---------- Permissions ----------
-# Make install dir world-readable so any HERMES_UID can read it at runtime.
-# The venv needs to be traversable too.
-USER root
-RUN chmod -R a+rX /opt/hermes
-# Start as root so the entrypoint can usermod/groupmod + gosu.
-# If HERMES_UID is unset, the entrypoint drops to the default hermes user (10000).
-
-# ---------- Python virtualenv ----------
-RUN uv venv && \
-    uv pip install --no-cache-dir -e ".[all]" && \
-    uv pip install --no-cache-dir sounddevice numpy faster-whisper
-
-# ---------- Runtime ----------
-ENV HERMES_WEB_DIST=/opt/hermes/hermes_cli/web_dist
-ENV HERMES_HOME=/opt/data
-ENV PATH="/opt/data/.local/bin:${PATH}"
-VOLUME [ "/opt/data" ]
-ENTRYPOINT [ "/usr/bin/tini", "-g", "--", "/opt/hermes/docker/entrypoint.sh" ]

flake.lock

@@ -70,11 +70,11 @@
         "pre-commit-hooks": "pre-commit-hooks"
       },
       "locked": {
-        "lastModified": 1774721317,
-        "narHash": "sha256-KS0ElyhZKdUFcfaxfwid3yi2Id3EP9i+dGL16/wx1T8=",
+        "lastModified": 1777373577,
+        "narHash": "sha256-K0sXr8tRA9L1FGE8Khl42NR+DmZOY9gNYCP8ljX7TAo=",
         "ref": "main",
-        "rev": "d0190cff6f2314cc1c727ff113aea20e086f4bcc",
-        "revCount": 19103,
+        "rev": "faaa14a303dabc6309a52cc8e5eba86f9e29ccaf",
+        "revCount": 19152,
         "type": "git",
         "url": "https://git.lix.systems/lix-project/lix"
       },
@@ -178,11 +178,11 @@
     },
     "nixpkgs_2": {
       "locked": {
-        "lastModified": 1774386573,
-        "narHash": "sha256-4hAV26quOxdC6iyG7kYaZcM3VOskcPUrdCQd/nx8obc=",
+        "lastModified": 1777268161,
+        "narHash": "sha256-bxrdOn8SCOv8tN4JbTF/TXq7kjo9ag4M+C8yzzIRYbE=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "46db2e09e1d3f113a13c0d7b81e2f221c63b8ce9",
+        "rev": "1c3fe55ad329cbcb28471bb30f05c9827f724c76",
         "type": "github"
       },
       "original": {

flake.nix

@@ -61,6 +61,7 @@
               ./modules/nixos/services/open_code_server.nix
               ./modules/nixos/services/ollama_init_custom_models.nix
               ./modules/nixos/services/openclaw_node.nix
+              ./modules/nixos/security/ai-worker-restricted.nix
               ./users/gortium.nix
               ./users/ai-worker.nix
             ];

hosts/lazyworkhorse/configuration.nix

@@ -36,7 +36,7 @@
     "transparent_hugepage=always" # because mucho ram
   ];
   # 2. Load the specific drivers found by sensors-detect
-  boot.kernelModules = [ "nct6775" "lm96163" ];
+  boot.kernelModules = [ "nct6775" "lm96163" "iptable_nat" "iptable_filter" ];
   # 3. Force the nct6775 driver to recognize the chip if it's stubborn
   boot.extraModprobeConfig = ''
     options nct6775 force_id=0xd280
@@ -49,6 +49,26 @@
   networking.networkmanager.enable = true;  # Easiest to use and most distros use this by default.
   networking.hostId = "deadbeef";
 
+  # WireGuard VPN client -- always up, connects to wg-easy server
+  # Create age-encrypted secrets before deploying (run on the host):
+  #   echo -n "<private_key>" | agenix -e secrets/wireguard_private_key.age
+  #   echo -n "<preshared_key>" | agenix -e secrets/wireguard_preshared_key.age
+  networking.wireguard.interfaces = {
+    wg0 = {
+      ips = [ "10.8.0.3/24" ];
+      privateKeyFile = config.age.secrets.wireguard_private_key.path;
+      peers = [
+        {
+          publicKey = "rY9zII3AOm8rog2rv02PyA3Bq7zdvTOGkZapfCV1DkE=";
+          presharedKeyFile = config.age.secrets.wireguard_preshared_key.path;
+          allowedIPs = [ "10.8.0.0/24" ];
+          endpoint = "vpn.lazyworkhorse.net:51820";
+          persistentKeepalive = 25;
+        }
+      ];
+    };
+  };
+
   # Set your time zone.
   time.timeZone = "America/Montreal";
 
@@ -221,6 +241,11 @@
       path = self + "/assets/compose/homepage";
     };
 
+    vpn = {
+      path = self + "/assets/compose/vpn";
+      envFile = config.age.secrets.containers_env.path;
+    };
+
     # tak = {
     #   path = self + "/assets/compose/tak";
     # };
@@ -264,6 +289,20 @@
         mode = "0440";
         path = "/run/secrets/openclaw_gateway_token";
       };
+      wireguard_private_key = {
+        file = ../../secrets/wireguard_private_key.age;
+        owner = "root";
+        group = "root";
+        mode = "0400";
+        path = "/run/secrets/wireguard_private_key";
+      };
+      wireguard_preshared_key = {
+        file = ../../secrets/wireguard_preshared_key.age;
+        owner = "root";
+        group = "root";
+        mode = "0400";
+        path = "/run/secrets/wireguard_preshared_key";
+      };
     };
   };
 
@@ -314,6 +353,7 @@
   
   # Firewall - default deny, explicit allow
   networking.firewall = {
+    # Enable firewall with default deny policy (NixOS firewall denies all by default)
     enable = true;
     allowPing = true;
     
@@ -331,14 +371,17 @@
     ];
     
     allowedUDPPorts = [
-      # Add UDP ports if required
+      51820 # WireGuard VPN
     ];
     
     # Rate limiting and attack prevention
     extraCommands = ''
-      # Rate limit SSH connections (max 4 new connections per 60 seconds)
+      # 1. Wipe the INPUT chain clean at the start of every activation
+      iptables -F INPUT
+      
+      # Rate limit SSH connections (max 20 new connections per 60 seconds)
       iptables -A INPUT -p tcp --dport 2424 -m state --state NEW -m recent --set
-      iptables -A INPUT -p tcp --dport 2424 -m state --state NEW -m recent --update --seconds 60 --hitcount 4 -j DROP
+      iptables -A INPUT -p tcp --dport 2424 -m state --state NEW -m recent --update --seconds 60 --hitcount 20 -j DROP
       
       # Rate limit HTTP/HTTPS (protects Traefik)
       iptables -A INPUT -p tcp --dport 80 -m state --state NEW -m limit --limit 25/minute --limit-burst 100 -j ACCEPT
@@ -349,6 +392,10 @@
       
       # Log dropped packets (rate limited)
       iptables -A INPUT -m limit --limit 5/min -j LOG --log-prefix "IPTables-Dropped: " --log-level 4
+
+      # 3. CRITICAL: Re-link the NixOS default firewall chain
+      # Without this line, the 'allowedTCPPorts' in your Nix config will be ignored!
+      iptables -A INPUT -j nixos-fw
     '';
   };
 
@@ -360,11 +407,22 @@
     banaction = "iptables-multiport";
     
     jails = {
-      # Ban repeat offenders for 1 week
+      # SSH brute force protection (uses systemd journal backend)
+      sshd = {
+        enabled = true;
+        settings = {
+          filter = "sshd";
+          port = "2424";
+          maxretry = 3;
+          bantime = "1h";
+        };
+      };
+      
+      # Recidive - ban repeat offenders for 1 week
       recidive = {
         enabled = true;
-        filter = "recidive";
         settings = {
+          filter = "recidive";
           logpath = "/var/log/fail2ban.log";
           bantime = "1w";
           findtime = "1d";
@@ -372,21 +430,11 @@
         };
       };
       
-      # SSH brute force protection
-      sshd = {
-        enabled = true;
-        settings = {
-          port = "2424";
-          maxretry = 3;
-          bantime = "1h";
-        };
-      };
-      
-      # HTTP authentication failures
+      # HTTP authentication failures (Traefik)
       http-auth = {
         enabled = true;
-        filter = "apache-auth";
         settings = {
+          filter = "traefik-auth";
           port = "80,443";
           logpath = "/var/log/traefik/access.log";
           maxretry = 5;
@@ -394,11 +442,11 @@
         };
       };
       
-      # HTTP scanning/attacks
+      # HTTP scanning/attacks (Traefik)
       http-botsearch = {
         enabled = true;
-        filter = "apache-botsearch";
         settings = {
+          filter = "traefik-botsearch";
           port = "80,443";
           logpath = "/var/log/traefik/access.log";
           maxretry = 2;
@@ -407,12 +455,26 @@
       };
     };
   };
+  
+  # Custom fail2ban filters for Traefik
+  environment.etc."fail2ban/filter.d/traefik-auth.conf".text = ''
+    [Definition]
+    failregex = ^<HOST> -.*"(GET|POST|HEAD|PUT|DELETE).*" (401|403) \d+.*$
+    ignoreregex =
+  '';
+  
+  environment.etc."fail2ban/filter.d/traefik-botsearch.conf".text = ''
+    [Definition]
+    failregex = ^<HOST> -.*"(GET|POST|HEAD|PUT|DELETE).*" 404 \d+.*$
+                ^<HOST> -.*"(GET|POST|HEAD|PUT|DELETE).*/(\.|wp-|php|admin|login|xmlrpc|\.env|\.git|\.aws|\.azure).*" \d+.*$
+    ignoreregex =
+  '';
 
   # SSH hardening
   services.openssh.settings = {
     PermitRootLogin = "no";
     MaxAuthTries = 3;
-    MaxSessions = 5;
+    MaxSessions = 10;
     LoginGraceTime = 30;
     ClientAliveInterval = 300;
     ClientAliveCountMax = 2;
@@ -474,7 +536,7 @@
   };
 
   # Audit logging
-  security.audit.enable = true;
+  security.auditd.enable = true;
   
   # Fail2ban log directory
   systemd.tmpfiles.rules = [

modules/nixos/security/README-ai-worker.md

@@ -0,0 +1,105 @@
+# AI Worker Restricted Access
+
+This module provides SSH access for the AI worker (hermes-agent) to run ollama benchmarks on the host.
+
+## Security Model
+
+The `ai-worker` user has:
+
+### Filesystem Access
+- **Home directory**: `/home/ai-worker` (standard user home)
+- **No bind mounts**: Cannot access `/home/gortium/infra` or other host files
+- **Cannot access**: Any files outside standard system paths
+
+### Sudo Access
+- **NONE**: ai-worker has no sudo privileges
+- Cannot run `nh`, `nixos-rebuild`, `nixpkgs-fmt`, or `nix` with elevated permissions
+
+### Docker Access
+- Member of `docker` group - can run `docker` and `docker exec` commands
+- Primary use: `docker exec ollama ollama ...` for benchmarking
+- Can run `docker exec --privileged ollama rocm-smi ...` for VRAM monitoring
+
+## Workflow: SSH + Docker Benchmarking
+
+The AI worker connects from the Hermes container to the host via SSH, runs ollama benchmarks, then returns to save results.
+
+### Example Workflow
+
+```bash
+# From Hermes container, SSH to host
+ssh -i /path/to/ssh/key ai-worker@host.docker.internal
+
+# On host, run ollama benchmarks via docker
+docker exec ollama ollama pull devstral-small-2:24b
+
+# Create test modelfile
+docker exec ollama bash -c 'cat <<EOF > /root/.ollama/test.modelfile
+FROM devstral-small-2:24b
+PARAMETER num_ctx 65536
+PARAMETER num_gpu 99
+PARAMETER flash_attn true
+EOF'
+
+# Create and test model
+docker exec ollama ollama create test-model -f /root/.ollama/test.modelfile
+docker exec ollama ollama run test-model "Write a Python async function"
+
+# Check VRAM usage
+docker exec --privileged ollama rocm-smi --showmeminfo vram
+
+# Cleanup
+docker exec ollama ollama rm test-model
+
+# Exit SSH, return to Hermes container
+exit
+
+# Save results in Hermes container
+# /opt/data/ai-optimizer/state.json
+# /opt/data/ai-optimizer/results.csv
+```
+
+## SSH Access
+
+Connect as:
+```bash
+ssh ai-worker@lazyworkhorse
+```
+
+The working directory will be `/home/ai-worker`. No infra repo access.
+
+## Verification
+
+Check ai-worker permissions:
+```bash
+# On the host, as root or gortium:
+sudo -u ai-worker sudo -l
+# Should show: no sudo access
+
+# Check docker group membership
+groups ai-worker
+# Should show: ai-worker docker
+```
+
+## Troubleshooting
+
+If ai-worker cannot run docker commands:
+```bash
+# Check docker group membership
+groups ai-worker
+
+# Verify ollama container is running
+docker ps | grep ollama
+
+# Test docker access
+sudo -u ai-worker docker exec ollama ollama list
+```
+
+If SSH connection fails:
+```bash
+# Check SSH key is authorized
+cat /home/ai-worker/.ssh/authorized_keys
+
+# Check SSH service
+systemctl status sshd
+```

modules/nixos/security/ai-worker-restricted.nix

@@ -0,0 +1,17 @@
+{ config, pkgs, lib, ... }:
+
+with lib;
+
+{
+  options.services.aiWorkerAccess = mkOption {
+    type = types.bool;
+    default = false;
+    description = "Enable AI worker SSH access with docker group membership for ollama benchmarking";
+  };
+
+  config = mkIf config.services.aiWorkerAccess {
+    # ai-worker is member of docker group - can run docker commands via SSH
+    # No bind mounts, no sudo access - docker-only for ollama benchmarking
+    users.groups.docker.members = [ "ai-worker" ];
+  };
+}

modules/nixos/services/ollama_init_custom_models.nix

@@ -14,8 +14,25 @@
         local base_model=$2
         if ! ${pkgs.docker}/bin/docker exec ollama ollama list | grep -q "$model_name"; then
           echo "$model_name not found, creating from $base_model..."
+          
+          # We use a custom TEMPLATE block to strip the 'currentDate' function 
+          # which is unsupported in Ollama 0.5.7 but present in Devstral's default manifest.
           ${pkgs.docker}/bin/docker exec ollama sh -c "cat <<EOF > /root/.ollama/$model_name.modelfile
 FROM $base_model
+TEMPLATE \"\"\"{{- if .System }}
+[SYSTEM_PROMPT]
+{{ .System }}
+[/SYSTEM_PROMPT]
+{{- end }}
+{{- range .Messages }}
+{{- if eq .Role \"user\" }}
+[INST]
+{{ .Content }}
+[/INST]
+{{- else if eq .Role \"assistant\" }}
+{{ .Content }}
+{{- end }}
+{{- end }}\"\"\"
 PARAMETER num_ctx 131072
 PARAMETER num_predict 4096
 PARAMETER num_keep 1024
@@ -26,6 +43,7 @@ PARAMETER stop \"[/INST]\"
 PARAMETER stop \"</s>\"
 EOF"
           ${pkgs.docker}/bin/docker exec ollama ollama create "$model_name" -f "/root/.ollama/$model_name.modelfile"
+          ${pkgs.docker}/bin/docker exec ollama rm "/root/.ollama/$model_name.modelfile"
         else
           echo "$model_name already exists, skipping."
         fi
@@ -36,6 +54,10 @@ EOF"
       
       # Create Devstral
       create_model_if_missing "devstral-small-2:24b-128k" "devstral-small-2:24b" 
+      
+      # create_model_if_missing "qwen2.5-coder:32b-128k" "qwen2.5-coder:32b"
+      
+      # create_model_if_missing "mistral-large-planner:123b" "mistral-large:123b-instruct-v2407-q4_K_S"
     '';
     serviceConfig = {
       Type = "oneshot";

secrets/containers.env.age

@@ -1,34 +1,36 @@
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users/ai-worker.nix

@@ -9,8 +9,20 @@
     openssh.authorizedKeys.keys = [
       keys.users.ai-worker.main
     ];
+    # No password login - SSH key only
+    hashedPassword = "!";
   };
   users.groups.ai-worker = {};
+
+  # Enable restricted AI worker SSH access for ollama benchmarking
+  # SECURITY: ai-worker can only:
+  #   - SSH into host from Hermes container
+  #   - Run docker commands (docker exec ollama ...) via docker group
+  #   - Run specific security audit commands
+  #   - NO access to infra repo (no bind mount)
+  #   - NO sudo access (no nh, nixos-rebuild, nixpkgs-fmt, nix)
+  # WORKFLOW: SSH from Hermes container, run docker benchmarks, return and save results to /opt/data/ai-optimizer/
+  services.aiWorkerAccess = true;
   
   # Restricted sudo for ai-worker - security checks only
   security.sudo.extraRules = [