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42 lines
1.2 KiB
Markdown
42 lines
1.2 KiB
Markdown
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# Prometheus
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[Prometheus] is a systems and service monitoring system. It collects metrics from configured targets at given intervals, evaluates rule expressions, displays the results, and can trigger alerts when specified conditions are observed.
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[Prometheus]: https://github.com/prometheus/prometheus
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## Getting Started
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```nix
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# In `perSystem.process-compose.<name>`
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{
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services.prometheus."pro1".enable = true;
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}
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```
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{#tips}
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## Tips & Tricks
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{#scrape-configs}
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### Adding Scrape Configs
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`scrape_configs` controls what resources Prometheus monitors.
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Since Prometheus also exposes data about itself as an HTTP endpoint it can scrape and monitor its own health. In the [default example configuration](https://github.com/prometheus/prometheus/blob/3f686cad8bee405229b2532584ef181ce9f6a8b3/documentation/examples/prometheus.yml) there is a single job, called prometheus. We can add it to `scrape_configs` using the following config:
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```nix
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{
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services.prometheus."pro1" = {
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enable = true;
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# scrape prometheus
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extraConfig = {
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scrape_configs = [{
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job_name = "prometheus";
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static_configs = [{
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targets = [ "localhost:9090" ];
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}];
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}];
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};
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};
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}
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```
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