Prometheus server configuration example

In this section, there is an example of Prometheus configuration with Service Discovery (SD) enabled of files (sd_file). You can prepare the main Prometheus configuration file at:

• /home/ubuntu/prometheus.yaml

In the configuration file (prometheus.yml) you have to setup the location of the sd_file

# my global config
global:
  scrape_interval: 15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
  # scrape_timeout is set to the global default (10s).

# A scrape configuration containing exactly one endpoint to scrape:
# Here it's Prometheus itself.
scrape_configs:
  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
  - job_name: "prometheus"

    # metrics_path defaults to '/metrics'
    # scheme defaults to 'http'.

    static_configs:
      - targets: ["localhost:9090"]

  - job_name: "sd_file"
    file_sd_configs:
    - files:
      - "sd_file.yaml"
      refresh_interval: 1m

Then you can create the SD file /home/ubuntu/sd_file.yaml and set an empty array as content for the sd_file.yaml:

[]

Now you can run prometheus inside a docker container with the following bash command:

Warning

Use the correct location of your prometheus.yml and sd_file.yaml.

sudo docker run -p 9090:9090 -v /home/ubuntu/config.yaml:/etc/prometheus/prometheus.yml -v /home/ubuntu/sd_file.yaml:/etc/prometheus/sd_file.yaml prom/prometheus

Important

You can now add your Prometheus server to the topology (see Add Prometheus server). The server sd_file, in this case, will be /home/ubuntu/sd_file.yaml.