Files
nixos-config/hosts/m3-hermes/services/hermes-dashboard.nix

70 lines
2.7 KiB
Nix

{
config,
pkgs,
inputs,
...
}: let
# Netbird mesh VPN range — dashboard only accessible from mesh peers.
# m3-atlas Traefik proxies to this port over Netbird.
netbirdRange = "100.64.0.0/16";
apiPort = config.m3ta.ports.get "hermes-api";
dashboardPort = config.m3ta.ports.get "hermes-dashboard";
# Reference the hermes-agent package from the running service config
hermesPkg = config.services.hermes-agent.package or (inputs.hermes-agent.packages.${pkgs.stdenv.hostPlatform.system}.default or pkgs.hermes-agent);
in {
# ── Hermes Dashboard systemd service ───────────────────────────────────
# Web UI for managing Hermes Agent — sessions, config, kanban, cron, etc.
#
# Flow: Browser → dash.m3ta.dev (TLS via m3-atlas Traefik) → Netbird → :${toString dashboardPort}
#
# --insecure is required to bind 0.0.0.0 (hermes refuses non-localhost otherwise).
# Safe because firewall restricts the dashboard/API ports to Netbird mesh only.
systemd.services.hermes-dashboard = {
description = "Hermes Agent Web Dashboard";
after = ["network.target" "hermes-agent.service"];
wants = ["hermes-agent.service"];
wantedBy = ["multi-user.target"];
serviceConfig = {
Type = "simple";
User = "hermes";
Group = "hermes";
ExecStart = "${hermesPkg}/bin/hermes dashboard --host 0.0.0.0 --port ${toString dashboardPort} --no-open --insecure";
# Environment matching the hermes-agent service
Environment = [
"HERMES_HOME=/var/lib/hermes/.hermes"
"HERMES_MANAGED=true"
"HOME=/var/lib/hermes"
];
# Security hardening (matching hermes-agent service pattern)
NoNewPrivileges = true;
ProtectSystem = "strict";
ProtectHome = "read-only";
ReadWritePaths = ["/var/lib/hermes" "/tmp"];
PrivateTmp = true;
# Restart policy
Restart = "on-failure";
RestartSec = 5;
};
};
# ── Firewall: Hermes network endpoints only from Netbird mesh ──────────
networking.firewall = {
extraCommands = ''
# Allow Hermes Dashboard and OpenAI-compatible API only from Netbird mesh VPN
ip46tables -A nixos-fw -p tcp --dport ${toString dashboardPort} -s ${netbirdRange} -j nixos-fw-accept
ip46tables -A nixos-fw -p tcp --dport ${toString apiPort} -s ${netbirdRange} -j nixos-fw-accept
'';
extraStopCommands = ''
ip46tables -D nixos-fw -p tcp --dport ${toString dashboardPort} -s ${netbirdRange} -j nixos-fw-accept 2>/dev/null || true
ip46tables -D nixos-fw -p tcp --dport ${toString apiPort} -s ${netbirdRange} -j nixos-fw-accept 2>/dev/null || true
'';
};
}