p4n4-docs

IoT Stack

The IoT stack (p4n4-iot) is the foundation of every p4n4 deployment. It owns the p4n4-net Docker bridge network that all other stacks attach to.

Services

Service	Image	Port	Role
Mosquitto	eclipse-mosquitto:2	1883 / 9001	MQTT broker
InfluxDB	influxdb:2	8086	Time-series database
Node-RED	nodered/node-red:latest	1880	Flow-based data routing
Grafana	grafana/grafana:latest	3000	Dashboarding

Network

The IoT stack creates p4n4-net:

networks:
  p4n4-net:
    name: p4n4-net
    driver: bridge
    ipam:
      config:
        - subnet: 172.20.0.0/16

All other stacks declare it as external: true.

Environment variables

Variable	Description
INFLUXDB_ADMIN_TOKEN	InfluxDB admin API token
INFLUXDB_ORG	InfluxDB organisation
INFLUXDB_BUCKET	Default bucket
MQTT_USER / MQTT_PASSWORD	MQTT broker credentials
GF_SECURITY_ADMIN_PASSWORD	Grafana admin password

Mosquitto ACL

Edit config/mosquitto/acl to control topic-level access. Generate the password file with:

mosquitto_passwd -c config/mosquitto/passwd <username>

Or via CLI: p4n4 secret mqtt-passwd