Prometheus

Adding services dynamically

Set JOBS environment variable with a string of service scrape definitions, separated by ,.

Single scrape definition follow this syntax:

<serviceName>:<port>[<metricsPath>][;[<scrapeInterval>][;[<scrapeTimeout>]]]

Each service scrape definition can contains 5 parameters (bold ones are mandatory):

• serviceName: Used as scrape job name and hostname (with tasks. prefix) of service to scrape.
• port: The service port to scrape metrics from.
• metricsPath: The HTTP resource path on which to fetch metrics from target. Default is /metrics.
• scrapeInterval: How frequently to scrape target. Default is 15s.
• scrapeTimeout: Per-scrape timeout when scraping target. Default is 10s.

Example

Consider 3 services to scrape:

JOBS=service1:8080,service2:8000/metrics-path;60;30,service3:3000;;20

• service1 uses port 8080 (other params use default values).
• service2 uses port 8000, path /metrics-path, interval 60s and timeout 30s.
• service3 uses port 3000 and timeout 20s (other params use default values).