merge: testing → main (reconcile 2-week divergence)

deploy/decnet-canary.service.j2

@@ -0,0 +1,46 @@
+[Unit]
+Description=DECNET Canary Token Callback Receiver (HTTP + DNS)
+Documentation=https://git.resacachile.cl/anti/DECNET/wiki/Workers#canary
+After=network-online.target decnet-bus.service decnet-api.service
+Wants=network-online.target decnet-bus.service
+
+[Service]
+Type=simple
+User={{ user }}
+Group={{ group }}
+WorkingDirectory={{ install_dir }}
+EnvironmentFile=-{{ install_dir }}/.env.local
+Environment=DECNET_SYSTEM_LOGS=/var/log/decnet/decnet.canary.log
+ExecStart={{ venv_dir }}/bin/decnet canary
+StandardOutput=append:/var/log/decnet/decnet.canary.log
+StandardError=append:/var/log/decnet/decnet.canary.log
+
+# Bind low-numbered DNS port (53) and HTTP port (80/443) requires
+# CAP_NET_BIND_SERVICE; the default DECNET_CANARY_HTTP_PORT (8088)
+# and DECNET_CANARY_DNS_PORT (5353) are unprivileged, so the
+# capability is granted only when an operator overrides those to
+# privileged values via .env.local.
+AmbientCapabilities=CAP_NET_BIND_SERVICE
+CapabilityBoundingSet=CAP_NET_BIND_SERVICE
+
+# Persist canary blobs (operator uploads) under /var/lib/decnet —
+# the same posture the rest of the workers use for runtime data.
+ReadWritePaths={{ install_dir }} /var/log/decnet /var/lib/decnet
+
+# Security Hardening
+NoNewPrivileges=yes
+ProtectSystem=full
+ProtectHome=read-only
+PrivateTmp=yes
+ProtectKernelTunables=yes
+ProtectKernelModules=yes
+ProtectControlGroups=yes
+RestrictSUIDSGID=yes
+LockPersonality=yes
+
+Restart=on-failure
+RestartSec=5
+TimeoutStopSec=15
+
+[Install]
+WantedBy=multi-user.target