InfluxDB, Telegraf, and Grafana in Docker

This Docker setup deploys a fully integrated stack of InfluxDB, Telegraf, and Grafana, connecting all services with a single token. It includes two sample dashboards as examples. In essence, this is a ready-to-use system for collecting data from any sensors or any data sources.

Setup

If you need specific security settings, rename the .env.example file to .env and fill it out.

InfluxDB Initialization

1. To initialize the InfluxDB database, run the following command once:

   docker compose up influxdb_cli

   After initialization (wait 10–15 seconds), press Ctrl + C.

2. Start all services:

   docker compose up -d

3. Stop all services:

   docker compose down

Start Grafana Only

docker compose up -f docker-compose-only-grafana.yml -d

Folder Structure

• telegraf/telegraf-conf/ – Telegraf configuration files
  • telegraf.conf – contains the configured output to InfluxDB.
  • telegraf.d/ – folder with input configurations for various data sources.
• telegraf/mibs/ – MIB files for polling SNMP devices (replaces /usr/share/snmp/mibs).

Services

• Grafana: http://localhost:3000
  Login/Password: admin / admingrafana

• InfluxDB: http://localhost:8086
  Login/Password: admin / admininflux

Important

Tokens and passwords are fixed – this setup is for learning and getting familiar with the technologies.

Recommended:

• Generate a new token in the InfluxDB interface.
• Insert this token into the telegraf.conf configuration file.
• Add a new data source in Grafana using this token.
• Finally, change the passwords for the InfluxDB and Grafana web interfaces to secure and unique ones.

Configuration

• Grafana: Configured via environment variables in docker-compose.yml.
• InfluxDB: Data is stored in the influxdb2 directory and configured via environment variables in docker-compose.yml.
• Telegraf: Configurations are specified in telegraf/telegraf.conf.

Network and Volumes

• Network: lab240-monitoring
• Volumes:
  • grafana-data: Grafana data
  • ./influxdb2: InfluxDB data