How do I set up Prometheus metrics in my Python application?

How do I set up Prometheus metrics in my Python application?

To set up Prometheus metrics in your Python application, you can use the prometheus_client library. First, install it using pip: pip install prometheus_client.

What are the basic metrics I can track?

You can track various metrics like counters, gauges, histograms, and summaries. For example, a counter can track the number of requests.

How do I expose these metrics to Prometheus?

You can expose metrics by creating an HTTP endpoint in your application. Use start_http_server(port) from the prometheus_client to start serving metrics.

Can you show me a code example?

Sure! Here's a simple example:

from prometheus_client import start_http_server, Counter

# Create a counter
REQUEST_COUNT = Counter('request_count', 'Total number of requests')

if __name__ == '__main__':
    start_http_server(8000)  # Expose metrics on port 8000
    while True:
        REQUEST_COUNT.inc()  # Increment the counter