[Unit]
Description=DECNET Swarm Controller (master)
Documentation=https://github.com/4nt11/DECNET/wiki/SWARM-Mode
After=network-online.target decnet-api.service
Wants=network-online.target

[Service]
Type=simple
User=decnet
Group=decnet
WorkingDirectory=/opt/decnet
EnvironmentFile=-/opt/decnet/.env.local
# Default bind is loopback — the controller is a master-local orchestrator
# reached by the CLI and the web dashboard, not by workers.
ExecStart=/opt/decnet/venv/bin/decnet swarmctl --host 127.0.0.1 --port 8770

# No special capabilities — the controller issues mTLS certs and talks to
# workers over TCP on unprivileged ports.
CapabilityBoundingSet=
AmbientCapabilities=

# Security Hardening
NoNewPrivileges=yes
ProtectSystem=full
ProtectHome=read-only
PrivateTmp=yes
ProtectKernelTunables=yes
ProtectKernelModules=yes
ProtectControlGroups=yes
RestrictSUIDSGID=yes
LockPersonality=yes
# Reads/writes the CA bundle and the master DB.
ReadWritePaths=/opt/decnet /var/log/decnet
ReadOnlyPaths=/etc/decnet

Restart=on-failure
RestartSec=5

[Install]
WantedBy=multi-user.target