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Co-authored-by: Matt Holt <mholt@users.noreply.github.com>
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Dave Henderson 2020-09-22 19:56:20 -04:00 • committed by GitHub
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@ -45,13 +45,13 @@ $ prometheus --config.file=prometheus.yaml
## Caddy's metrics ## Caddy's metrics
Like any process monitored with Prometheus, Caddy exposes an HTTP endpoint Like any process monitored with Prometheus, Caddy exposes an HTTP endpoint
that responds with in the [Prometheus exposition format](https://prometheus.io/docs/instrumenting/exposition_formats/#text-based-format). that responds in the [Prometheus exposition format](https://prometheus.io/docs/instrumenting/exposition_formats/#text-based-format).
Caddy's Prometheus client is also configured to respond with the [OpenMetrics exposition format](https://pkg.go.dev/github.com/prometheus/client_golang@v1.7.1/prometheus/promhttp#HandlerOpts) Caddy's Prometheus client is also configured to respond with the [OpenMetrics exposition format](https://pkg.go.dev/github.com/prometheus/client_golang@v1.7.1/prometheus/promhttp#HandlerOpts)
if negotiated (that is, if the `Accept` header is set to if negotiated (that is, if the `Accept` header is set to
`application/openmetrics-text; version=0.0.1`). `application/openmetrics-text; version=0.0.1`).
By default, there is a `/metrics` endpoint available at the [admin API](/docs/api) By default, there is a `/metrics` endpoint available at the [admin API](/docs/api)
(i.e. http://localhost:2019/metrics by default). But if the admin API is (i.e. http://localhost:2019/metrics). But if the admin API is
disabled or you wish to listen on a different port or path, you can use the disabled or you wish to listen on a different port or path, you can use the
[`metrics` handler](/docs/caddyfile/directives/metrics) to configure this. [`metrics` handler](/docs/caddyfile/directives/metrics) to configure this.
@ -131,7 +131,7 @@ Label | Description
### HTTP Middleware metrics ### HTTP Middleware metrics
All Caddy HTTP Middleware Handlers are instrumented automatically for All Caddy HTTP middleware handlers are instrumented automatically for
determining request latency, time-to-first-byte, errors, and request/response determining request latency, time-to-first-byte, errors, and request/response
body sizes. body sizes.