DigitalOcean IoT Docker

DigitalOcean | IoT Docker

One-click Droplet for Mosquitto, InfluxDB, Telegraf & Grafana

Eclipse Mosquitto - An open source MQTT broker to collect your data via MQTT protocol
InfluxDB - The Time Series Data Platform to store your data in time series database
Telegraf - The open source server agent to connect Mosquitto and InfluxDB together
Grafana - The open observability platform to draw some graphs and more

Based on: https://github.com/Miceuz/docker-compose-mosquitto-influxdb-telegraf-grafana

Getting Started

Architecture diagram

Prerequisites

1. A DigitalOcean account - Sign up here
2. doctl CLI - Installation guide

Running on an Existing Droplet

Instead of manually deploying a new Droplet, you can run scripts/install.sh on an existing DigitalOcean Droplet to set up the environment. This script automates the installation process.

1. Update package lists and upgrade all packages

apt-get update && apt-get upgrade

2. Download and install Docker

curl -fsSL https://get.docker.com -o get-docker.sh

3. Install docker-compose and git

apt-get update && apt-get install -y docker-compose git

4. Run the installation script for this project

curl -sSL https://github.com/DO-Solutions/iot-docker/raw/master/scripts/install.sh | bash

Deploying a New Droplet

To deploy a new Droplet with the necessary software installed:

1. Clone this repo: git clone https://github.com/DO-Solutions/iot-docker
2. Enter the directory: cd iot-docker
3. Deploy the Droplet using the following command:

doctl compute droplet create iot-droplet \
--size s-2vcpu-4gb --image ubuntu-23-10-x64 \
--region lon1 --enable-backups \
--user-data-file cloudinit.yml

4. To check on your deployment SSH into your Droplet and run tail -f /var/log/cloud-init-output.log
5. To check the running services run cd /iot-docker && docker ps
6. To shutdown the whole thing cd /iot-docker && docker-compose down

Test your setup

1. Post messages into Mosquitto to see data in Grafana:

sudo docker container exec mosquitto mosquitto_pub -t 'paper_wifi/test/' -m '{"humidity":21, "temperature":21, "battery_voltage_mv":3000}'

2. Access Grafana at http://<your-server-ip>:3000. Username: admin, Password: /iot-docker/grafanapassword.txt.
3. Explore InfluxDB at http://<your-server-ip>:8086. Credentials in docker-compose.yml.

Grafana

Open in your browser: http://<your-server-ip>:3000

Username is admin

Password can be found in /iot-docker/grafanapassword.txt

You should see a graph of the data you have entered with the mosquitto_pub command.

InfluxDB

You can poke around your InfluxDB setup here: http://<your-server-ip>:8086

Username and password are found in docker-compose.yml

Configuration

Mosquitto

• Allows anonymous connections.
• Configured to listen on port 1883.

listener 1883
allow_anonymous true

InfluxDB

• Configuration details are available in docker-compose.yml.

Telegraf

• Set up to pipe MQTT messages to InfluxDB.
• Listens for topic paper_wifi/test.
• Configuration can be modified as per the official documentation.

Grafana data source

• Comes with a default data source pointing to InfluxDB.
• Configuration: grafana-provisioning/datasources/automatic.yml.
• Default dashboard setup in grafana-provisioning/dashboards.

Contact

Jack Pearce, Solutions Engineer - jpearce@digitalocean.com

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