Setting Up Telegraf and Prometheus with DaFT

[DaFT] - [How] - [Install] - [Config] - [JSON & XML] - [Extend] - [Implement]

DaFT provides structured data output that can be seamlessly integrated with Telegraf and Prometheus. This guide explains how to configure both tools to collect and process metrics from DaFT.

1. Configuring Prometheus to Scrape DaFT

Prometheus can collect metrics from DaFT when it exports data in Prometheus/OpenMetrics format. To set this up:

Step 1: Define a Prometheus Scrape Job

Edit your prometheus.yml configuration file and add a new scrape job:

scrape_configs:
  - job_name: "DaFT"
    metrics_path: "/your-endpoint/prometheus"
    static_configs:
      - targets: ["your-DaFT-host"]

Step 2: Reload Prometheus

After updating the configuration, reload Prometheus to apply the changes:

systemctl reload prometheus

Step 3: Verify Data Collection

Once Prometheus is running, verify that it is successfully collecting metrics by navigating to:

http://your-prometheus-host:9090/targets

You should see DaFT listed as an active target.

2. Configuring Telegraf to Collect Data from DaFT

Telegraf can fetch JSON-formatted data from DaFT and forward it to a time-series database such as InfluxDB.

Step 1: Install and Configure Telegraf

Ensure Telegraf is installed:

sudo apt install telegraf

Edit your Telegraf configuration file (/etc/telegraf/telegraf.conf) and add an HTTP input plugin to pull data from DaFT:

[[inputs.http]]
  urls = ["http://your-DaFT-host/your-endpoint"]
  method = "GET"
  response_timeout = "5s"
  data_format = "json"

Step 2: Configure Output to InfluxDB (Optional)

If you are using InfluxDB as a storage backend, configure the output plugin:

[[outputs.influxdb]]
  urls = ["http://your-influxdb-host:8086"]
  database = "metrics"
  precision = "s"

Step 3: Restart Telegraf

Apply the new configuration by restarting Telegraf:

sudo systemctl restart telegraf

Step 4: Verify Data Collection

Check Telegraf logs for errors:

sudo journalctl -u telegraf --no-pager | tail -50

You can also query InfluxDB or visualize the collected data using my favourite tool, Grafana.