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47 lines
1.8 KiB
Markdown
47 lines
1.8 KiB
Markdown
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# How to monitor with prometheus
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## Prerequisites:
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- [Prometheus](https://prometheus.io/docs/prometheus/latest/getting_started/) (Instal to scrap metrics and start to monitor)
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- (optional) [Grafana](https://grafana.com/grafana/download) (For better graphs)
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- (optional) [Setup prometheus+grafana](https://prometheus.io/docs/visualization/grafana/)
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## Start scrapping services
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To start scrapping with prometheus you must create or edit the prometheus config file and add all the services you want to scrap, like these:
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```diff
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global:
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scrape_interval: 15s # By default, scrape targets every 15 seconds.
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# Attach these labels to any time series or alerts when communicating with
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# external systems (federation, remote storage, Alertmanager).
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external_labels:
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monitor: 'codelab-monitor'
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# A scrape configuration containing exactly one endpoint to scrape:
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# Here it's Prometheus itself.
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scrape_configs:
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# The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
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- job_name: 'prometheus'
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# Override the global default and scrape targets from this job every 5 seconds.
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scrape_interval: 5s
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static_configs:
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- targets: ['localhost:9090']
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+ - job_name: 'beacon-chain'
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+ static_configs:
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+ - targets: ['localhost:8080']
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```
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After creating/updating the prometheus file run it:
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```sh
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$ prometheus --config.file=your-prometheus-file.yml
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```
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Now, you can add the prometheus server as a data source on grafana and start building your dashboards.
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## How to add additional metrics
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The prometheus service export the metrics from the `DefaultRegisterer` so just need to register your metrics with the `prometheus` or `promauto` libraries.
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To know more [Go application guide](https://prometheus.io/docs/guides/go-application/)
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