fix(server.go): add OK output to /healthz when healthy (#16)

Some loadbalancers (e.g. Google Cloud Load Balancer) don't accept a HTTP status code of 204 No Content as healthy so we've decided to return 200 OK and the string OK instead.
adfinis · Apr 15, 2021 · 6a90c29 · 6a90c29
1 parent 358dffe
commit 6a90c29
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/pkg/server.go b/pkg/server.go
@@ -182,7 +182,10 @@ func index(template *template.Template, counterHandle counterHandler) http.Handl
 func healthz() http.Handler {
 	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 		if atomic.LoadInt32(&healthy) == 1 {
-			w.WriteHeader(http.StatusNoContent)
+			_, err := w.Write([]byte("OK"))
+			if err != nil {
+				log.Fatal(err)
+			}
 			return
 		}
 		w.WriteHeader(http.StatusServiceUnavailable)