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cmd/derpprobe: add /healthz endpoint

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For a customer that wants to run their own DERP prober, let's add a
/healthz endpoint that can be used to monitor derpprobe itself.

Updates #6526

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: Iba315c999fc0b1a93d8c503c07cc733b4c8d5b6b
This commit is contained in:
Andrew Dunham 2024-10-15 16:18:04 -04:00
parent 5f22f72636
commit 2aa9125ac4
1 changed files with 5 additions and 0 deletions
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5
cmd/derpprobe/derpprobe.go
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@ -75,6 +75,11 @@ func main() {
prober.WithPageLink("Prober metrics", "/debug/varz"),
prober.WithProbeLink("Run Probe", "/debug/probe-run?name={{.Name}}"),
), tsweb.HandlerOptions{Logf: log.Printf}))
mux.Handle("/healthz", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
w.Header().Set("Content-Type", "text/plain")
w.WriteHeader(http.StatusOK)
w.Write([]byte("ok\n"))
}))
log.Printf("Listening on %s", *listen)
log.Fatal(http.ListenAndServe(*listen, mux))
}