Health check with "GoogleHC/1.0" user agent fails and stops traffic

[maxmoeschinger]

Report

Health check in google container engine is using an other user agent than k8s

Expected Behavior

to return healthy response on google container engine health check

Actual Behavior

Returning 404 and failing the check

Steps to Reproduce the Problem

1. Deploy keda http in gce

Logs from KEDA HTTP operator

{"level":"error","ts":1703160586.9367507,"logger":"LoggingMiddleware.RoutingMiddleware.StaticHandler","caller":"handler/static.go:36","msg":"Not Found","routingKey":"//10.23.128.144/","namespacedNameError":"PANIC=value method k8s.io/apimachinery/pkg/types.NamespacedName.MarshalLog called using nil *NamespacedName pointer","stream":"<nil>","stacktrace":"github.com/kedacore/http-add-on/interceptor/handler.(*Static).ServeHTTP\n\tgit.luolix.top/kedacore/http-add-on/interceptor/handler/static.go:36\ngit.luolix.top/kedacore/http-add-on/interceptor/middleware.(*Routing).ServeHTTP\n\tgit.luolix.top/kedacore/http-add-on/interceptor/middleware/routing.go:46\ngit.luolix.top/kedacore/http-add-on/interceptor/middleware.(*Logging).ServeHTTP\n\tgit.luolix.top/kedacore/http-add-on/interceptor/middleware/logging.go:42\nnet/http.serverHandler.ServeHTTP\n\tnet/http/server.go:2936\nnet/http.(*conn).serve\n\tnet/http/server.go:1995"}
{"level":"info","ts":1703160586.9369504,"logger":"LoggingMiddleware","caller":"middleware/logging.go:73","msg":"35.191.2.22:41208 - - [21/Dec/2023:12:09:46 +0000] \"GET / HTTP/1.1\" 404 9 \"\" \"GoogleHC/1.0\""}

HTTP Add-on Version

0.6.0

Kubernetes Version

1.28

Platform

Google Cloud

Anything else?

No response