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OCPBUGS-62868: temporarily disable metrics auth for hypershift clusters #1245

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OCPBUGS-62868: temporarily disable metrics auth for hypershift clusters #1245

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17 changes: 13 additions & 4 deletions pkg/cvo/metrics.go
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Original file line number Diff line number Diff line change
Expand Up @@ -132,7 +132,16 @@ type asyncResult struct {
error error
}

func createHttpServer(ctx context.Context, client *authenticationclientsetv1.AuthenticationV1Client) *http.Server {
func createHttpServer(ctx context.Context, client *authenticationclientsetv1.AuthenticationV1Client, disableAuth bool) *http.Server {
if disableAuth {
handler := http.NewServeMux()
handler.Handle("/metrics", promhttp.Handler())
server := &http.Server{
Handler: handler,
}
return server
}

auth := authHandler{downstream: promhttp.Handler(), ctx: ctx, client: client.TokenReviews()}
handler := http.NewServeMux()
handler.Handle("/metrics", &auth)
Expand Down Expand Up @@ -246,7 +255,7 @@ func handleServerResult(result asyncResult, lastLoopError error) error {
// Also detects changes to metrics certificate files upon which
// the metrics HTTP server is shutdown and recreated with a new
// TLS configuration.
func RunMetrics(runContext context.Context, shutdownContext context.Context, listenAddress, certFile, keyFile string, restConfig *rest.Config) error {
func RunMetrics(runContext context.Context, shutdownContext context.Context, listenAddress, certFile, keyFile string, restConfig *rest.Config, disableMetricsAuth bool) error {
var tlsConfig *tls.Config
if listenAddress != "" {
var err error
Expand All @@ -263,7 +272,7 @@ func RunMetrics(runContext context.Context, shutdownContext context.Context, lis
return fmt.Errorf("failed to create config: %w", err)
}

server := createHttpServer(runContext, client)
server := createHttpServer(runContext, client, disableMetricsAuth)

resultChannel := make(chan asyncResult, 1)
resultChannelCount := 1
Expand Down Expand Up @@ -317,7 +326,7 @@ func RunMetrics(runContext context.Context, shutdownContext context.Context, lis
case result := <-resultChannel: // crashed before a shutdown was requested or metrics server recreated
if restartServer {
klog.Info("Creating metrics server with updated TLS configuration.")
server = createHttpServer(runContext, client)
server = createHttpServer(runContext, client, disableMetricsAuth)
go startListening(server, tlsConfig, listenAddress, resultChannel)
restartServer = false
continue
Expand Down
3 changes: 2 additions & 1 deletion pkg/start/start.go
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Expand Up @@ -255,7 +255,8 @@ func (o *Options) run(ctx context.Context, controllerCtx *Context, lock resource
resultChannelCount++
go func() {
defer utilruntime.HandleCrash()
err := cvo.RunMetrics(postMainContext, shutdownContext, o.ListenAddr, o.ServingCertFile, o.ServingKeyFile, restConfig)
disableMetricsAuth := o.InjectClusterIdIntoPromQL // this is wired to the "--hypershift" flag, so when hypershfit is no, we disableMetricsAuth
err := cvo.RunMetrics(postMainContext, shutdownContext, o.ListenAddr, o.ServingCertFile, o.ServingKeyFile, restConfig, disableMetricsAuth)
resultChannel <- asyncResult{name: "metrics server", error: err}
}()
}
Expand Down