使用python测试prometheus的实现

pip3 install prometheus_client

from prometheus_client import start_http_server, Summary
import random
import time
import sys

# Create a metric to track time spent and requests made.
REQUEST_TIME = Summary ('request_processing_seconds', 'Time spent processing request')


# Decorate function with metric.
@REQUEST_TIME.time ( )
def process_request(t):
    """A dummy function that takes some time."""
    time.sleep (t)


if __name__ == '__main__':
    try:
        if sys.argv[1].isdigit():
            port = sys.argv[1]
        else:
            port = 8080
    except:
        port = 8080

    # Start up the server to expose the metrics.
    start_http_server (8080)
    # Generate some requests.
    while True:
        process_request (random.random ( ))

pytho3 prometheus_python_client.py 8080 &

curl 127.0.0.1:8080/metrics

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: 'python-client'
    scrape_interval: 5s
    static_configs:
      - targets: ['localhost:8080']
        labels:
          group: 'python-client-group'