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Selenium Grid exporter

A Prometheus exporter that collects Selenium Grid metrics.

Usage

$ docker run -it mcopjan/seleniumv4_grid_exporter:latest -h
Usage of /selenium_grid_exporter:
  -listen-address string
      Address on which to expose metrics. (default ":8080")
  -scrape-uri string
      URI on which to scrape Selenium Grid. (default "http://grid.local")
  -telemetry-path string
      Path under which to expose metrics. (default "/metrics")

Prometheus/Grafana example

  - run docker-compose -f docker-compose.yml up
  - open grafana at localhost:3000 (admin/foobar)
  - open Dashboards -> Manage -> Selenium4 Grid monitoring

Screenshot

Metrics

# HELP selenium_grid_hub_sessionCount number of active sessions
# TYPE selenium_grid_hub_sessionCount gauge
selenium_grid_hub_sessionCount 0
# HELP selenium_grid_hub_maxSession number of max sessions
# TYPE sselenium_grid_hub_maxSession gauge
selenium_grid_hub_maxSession 0
# HELP selenium_grid_hub_totalSlots total number of slots
# TYPE selenium_grid_hub_totalSlots gauge
selenium_grid_hub_totalSlots 8
# HELP selenium_grid_hub_sessionQueueSize number of session in queue
# TYPE selenium_grid_hub_sessionQueueSize gauge
selenium_grid_hub_sessionQueueSize 0
# HELP selenium_grid_up was the last scrape of Selenium Grid successful.
# TYPE selenium_grid_up gauge
selenium_grid_up 1