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fatedier
69ec4f0145
Add pkg/metrics/text, a small Prometheus text-format writer, and use it for frpc's /metrics. The endpoint lives only on metricsServer and is covered by its Basic Auth, like the other endpoints there. The package emits the Go runtime families and, on Linux, the process families read from /proc. Their names, types and help strings match client_golang's default collectors, so existing Go runtime dashboards keep working. It deliberately emits no frp_ business metrics and none of client_golang's promhttp_ handler metrics. Writing the subset ourselves keeps client_golang and protobuf out of the frpc binary; both are still used by frps and by the tests here.
12 lines
1.2 KiB
Markdown
12 lines
1.2 KiB
Markdown
## Features
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* frpc can verify server certificates using system CAs, optionally combined with CAs from `trustedCaFile`.
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* `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.
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* 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.
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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.
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## Fixes
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* Fixed proxy and visitor configuration changes being lost when reloading frpc during reconnection.
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