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I was curious concerning the workings of Prometheus. Using the Prometheus interface I am able to see a drop-down list which I assume contains all available metrics. However, I am not able to access the metrics endpoint which lists all of the scraped metrics. The http://targethost:9090/metrics endpoint only displays the metrics concerning the Prometheus server itself. Is it possible to access a similar endpoint which lists all available metrics. I could perform a query based on {__name__=~".+"} but I would prefer to avoid this option. Maybe I should also add that accessing the endpoints listed in the targets section does not work for me with as "a connection cannot be established".
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What Is Prometheus? Prometheus is a monitoring solution for recording and processing any purely numeric time-series. It gathers, organizes, and stores metrics along with unique identifiers and timestamps. Prometheus is open-source software that collects metrics from targets by "scraping" metrics HTTP endpoints.
Getting all metric names Note: A more efficient, non-PromQL way to get the same information is to use Prometheus's label values metadata endpoint to get all values for the __name__ label, e.g.: https://demo.promlabs.com/api/v1/label/name/values.
Prometheus stores its on-disk time series data under the directory specified by the flag storage. local. path . The default path is ./data (relative to the working directory), which is good to try something out quickly but most likely not what you want for actual operations.
Prometheus uses a very simple metric model with four metric types that are only supported in the client libraries.
The endpoint for that is http://localhost:9090/api/v1/label/__name__/values
API Reference
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