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docs: track deprecated observability endpoints on webServer (#5582)

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Record the deprecation of the observability endpoints on webServer in
doc/deprecations.md, so the removal target is in one place next to the
other active deprecations.

The webServer /healthz, the frps webServer /metrics with its top-level
enablePrometheus switch, and the pprof handlers with webServer.pprofEnable
are deprecated since v0.72.0, when metricsServer was added. They are
replaced by metricsServer, whose /healthz, /metrics and pprofEnable are
independent of the dashboard listener.
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fatedier
2026-10-20 16:51:31 +08:00
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@@ -4,7 +4,7 @@
* `frpc reload` now refreshes certificate files for unchanged `https2http` and `https2https` proxies without interrupting existing connections. Failed refreshes keep the previous certificate and report the error in proxy status and logs while reload still succeeds.
* Added `metricsServer` to both frps and frpc, a separate listener for health checks, metrics and optional profiling that does not expose the dashboard or the admin API. It is disabled unless `metricsServer.port` is set, defaults to `127.0.0.1`, and has its own credentials and TLS. Setting the port serves `/metrics` on both: frps exposes runtime and business metrics, so `enablePrometheus` is not needed there, and frpc exposes Go runtime metrics only, without linking an extra metrics library.
The `/healthz`, `/metrics` and pprof endpoints on `webServer`, and `enablePrometheus`, still work but are deprecated: configure `metricsServer` instead. They will be removed in a later release.
The `/healthz`, `/metrics` and pprof endpoints on `webServer`, `webServer.pprofEnable` and `enablePrometheus` still work but are deprecated: configure `metricsServer` instead. They will continue to work until v0.80.0 is released, and may be removed in v0.80.0 or later.
## Fixes