Mosquitto-Telegraf-Influx-Grafana Stack

This is a docker stack created to visualize the topics of a opendDTU (https://github.com/tbnobody/OpenDTU). The data from openDTU is transferred over mqtt with basic auth an let's encrypt certificates. The data will be stored up to five years. Basically it is the dockerized version of https://github.com/Kraego/OpenDTU-Grafana-Howto. When used with something different adapt the telegraf mapping to your scenario.

It consists of:

• mosquitto (mqtt broker)
• telegraf (mqtt -> influxDB2)
• influxDB2 (store the timeframes in buckets)
• grafana (monitoring)

Prequesites

• The following ports must be open on host (so if you have a firewall unblock these ports)
  • 3000 for grafana (webinterface)
  • 8883 or 1883 for mqtt broker (to receive publishes from openDTU)
• on mac os install gsed for example with brew
• if you want the tls cert stuff uncomment line 6-8 in the mosquitto.conf (see this guide how to install certbot on host OS)

How to use it

1. Clone the repo

   git clone https://github.com/Kraego/OpenDTU-Grafana-Stack.git   
   

2. Go to directory where you have cloned the repo

   cd OpenDTU-Grafana-Stack
   

3. Create a .env file from the template
   • rename .env_template to .env
   • configure the variables with your values, INFLUX_TOKEN will be set automatic during init
4. Run the init script:

    ./init.sh
   

5. Start up the whole stack

   docker-compose up -d
   

6. Open grafana: http://localhost:3000
   • Use the credentials configured in the .env file
   • Add or create Dashboards (for opendtu see: https://github.com/Kraego/OpenDTU-Grafana-Howto)

YOUR DONE

SELinux

If you have SELinux installed and running, add :Z to all volumes entries in docker-compose.yaml, e.g.

  volumes:
    - ./influxdb/data:/var/lib/influxdb2:Z

Lets encrypt certs

• Install Certbot on your Host
  • update [YOUR DOMAIN] and [DIR MOUNT OF MOSQUITTO CONTAINER ON HOST] (./mosquitto/certs) in mosquitto-copy-certs.sh
  • copy the file mosquitto-copy-certs.sh to your certbot renewal hooks dir (on Linux it is: /etc/letsencrypt/renewal-hooks/deploy) and make it executable (chmod +x mosquitto-copy-certs.sh)