Add documentation for fetching metrics on Caddy HTTP and Prometheus (#2853)
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@ -156,7 +156,7 @@ configuration options.
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* [postgresql_extensible](./plugins/inputs/postgresql_extensible)
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* [powerdns](./plugins/inputs/powerdns)
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* [procstat](./plugins/inputs/procstat)
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* [prometheus](./plugins/inputs/prometheus)
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* [prometheus](./plugins/inputs/prometheus) (can be used for [Caddy server](./plugins/inputs/prometheus/README.md#usage-for-caddy-http-server))
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* [puppetagent](./plugins/inputs/puppetagent)
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* [rabbitmq](./plugins/inputs/rabbitmq)
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* [raindrops](./plugins/inputs/raindrops)
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@ -61,6 +61,24 @@ to filter and some tags
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ssl_key = '/path/to/keyfile'
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```
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### Usage for Caddy HTTP server
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If you want to monitor Caddy, you need to use Caddy with its Prometheus plugin:
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* Download Caddy+Prometheus plugin [here](https://caddyserver.com/download/linux/amd64?plugins=http.prometheus)
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* Add the `prometheus` directive in your `CaddyFile`
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* Restart Caddy
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* Configure Telegraf to fetch metrics on it:
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```
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[[inputs.prometheus]]
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# ## An array of urls to scrape metrics from.
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urls = ["http://localhost:9180/metrics"]
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```
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> This is the default URL where Caddy Prometheus plugin will send data.
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> For more details, please read the [Caddy Prometheus documentation](https://github.com/miekg/caddy-prometheus/blob/master/README.md).
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### Measurements & Fields & Tags:
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Measurements and fields could be any thing.
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