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docs: update caddy server instructions (#9698)

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Samantha Wang 2021-09-21 12:03:41 -07:00 committed by GitHub
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plugins/inputs/prometheus/README.md
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@ -158,20 +158,20 @@ Authorization header.
### Usage for Caddy HTTP server
If you want to monitor Caddy, you need to use Caddy with its Prometheus plugin:
Steps to monitor Caddy with Telegraf's Prometheus input plugin:
* Download Caddy+Prometheus plugin [here](https://caddyserver.com/download/linux/amd64?plugins=http.prometheus)
* Add the `prometheus` directive in your `CaddyFile`
* Download [Caddy](https://caddyserver.com/download)
* Download Prometheus and set up [monitoring Caddy with Prometheus metrics](https://caddyserver.com/docs/metrics#monitoring-caddy-with-prometheus-metrics)
* Restart Caddy
* Configure Telegraf to fetch metrics on it:
```toml
[[inputs.prometheus]]
# ## An array of urls to scrape metrics from.
urls = ["http://localhost:9180/metrics"]
urls = ["http://localhost:2019/metrics"]
```
> This is the default URL where Caddy Prometheus plugin will send data.
> This is the default URL where Caddy will send data.
> For more details, please read the [Caddy Prometheus documentation](https://github.com/miekg/caddy-prometheus/blob/master/README.md).
### Metrics: