A runner that periodically tests a url with webpagetest.org and exposes those values to prometheus.io
- Exec
docker-compose -f docker-compose.dev.yml up --build --force-recreate - Create a config and check out the sample-config.toml:
# the Key from your local or remote webpagetest instance
key = "123"
# the URL to your webpagetest instance, if you run locally (and on a mac, use your real ip)
host = "http://127.0.0.1:4000"
# the Port where the service is running and the metrics are exposed
port = "3030"
# How often do you want to run the test
timer = "1h"
# An array of metrics you want to expose with prometheus
[[metrics]]
key = "time_to_first_byte_ms"
# Prometheus help
help = "First Byte in ms."
# The Data from the reponse that gets collected, the array index is set as run
data = [
"median.firstView.TTFB",
]
# An Array of sites / urls you want to tests
[[sites]]
name = "asna main"
url = "https://www.asna.ru"
location = "Test.LAN"-
Check the output at http://localhost:3030
-
Add to Prometheus to scrape
# HELP page_requests_no Page Size
# TYPE page_requests_no gauge
page_requests_no{location="Test",run="1",url="https://www.bbc.co.uk"} 81
page_requests_no{location="Test",run="2",url="https://www.bbc.co.uk"} 7
# HELP page_size_bytes Page Size
# TYPE page_size_bytes gauge
page_size_bytes{location="Test",run="1",url="https://www.bbc.co.uk"} 49001
page_size_bytes{location="Test",run="2",url="https://www.bbc.co.uk"} 112527
# HELP speed_index_no Speed Index
# TYPE speed_index_no gauge
speed_index_no{location="Test",run="1",url="https://www.bbc.co.uk"} 1617
speed_index_no{location="Test",run="2",url="https://www.bbc.co.uk"} 1102
# HELP time_first_byte First Byte in ms.
# TYPE time_first_byte gauge
time_first_byte{location="Test",run="1",url="https://www.bbc.co.uk"} 138
time_first_byte{location="Test",run="2",url="https://www.bbc.co.uk"} 121
# HELP time_load_time Load time in ms.
# TYPE time_load_time gauge
time_load_time{location="Test",run="1",url="https://www.bbc.co.uk"} 1657
time_load_time{location="Test",run="2",url="https://www.bbc.co.uk"} 1163
# HELP time_start_render_ms Start render time.
# TYPE time_start_render_ms gauge
time_start_render_ms{location="Test",run="1",url="https://www.bbc.co.uk"} 500
time_start_render_ms{location="Test",run="2",url="https://www.bbc.co.uk"} 300
# HELP time_visually_complete_ms Visually Complete
# TYPE time_visually_complete_ms gauge
time_visually_complete_ms{location="Test",run="1",url="https://www.bbc.co.uk"} 2400
time_visually_complete_ms{location="Test",run="2",url="https://www.bbc.co.uk"} 1600