fix: log deprecated bearer token fields at debug level

Signed-off-by: Simon Pasquier <spasquie@redhat.com>

pkg/prometheus/promcfg.go

@@ -880,7 +880,7 @@ func (cg *ConfigGenerator) generatePodMonitorConfig(
 
 	//nolint:staticcheck // Ignore SA1019 this field is marked as deprecated.
 	if ep.BearerTokenSecret.Name != "" {
-		level.Warn(cg.logger).Log("msg", "'bearerTokenSecret' is deprecated, use 'authorization' instead.")
+		level.Debug(cg.logger).Log("msg", "'bearerTokenSecret' is deprecated, use 'authorization' instead.")
 		if s, ok := store.TokenAssets[fmt.Sprintf("podMonitor/%s/%s/%d", m.Namespace, m.Name, i)]; ok {
 			cfg = append(cfg, yaml.MapItem{Key: "bearer_token", Value: s})
 		}
@@ -1371,12 +1371,12 @@ func (cg *ConfigGenerator) generateServiceMonitorConfig(
 	cfg = addTLStoYaml(cfg, m.Namespace, mergedTLSConfig)
 
 	if ep.BearerTokenFile != "" { //nolint:staticcheck // Ignore SA1019 this field is marked as deprecated.
-		level.Warn(cg.logger).Log("msg", "'bearerTokenFile' is deprecated, use 'authorization' instead.")
+		level.Debug(cg.logger).Log("msg", "'bearerTokenFile' is deprecated, use 'authorization' instead.")
 		cfg = append(cfg, yaml.MapItem{Key: "bearer_token_file", Value: ep.BearerTokenFile}) //nolint:staticcheck // Ignore SA1019 this field is marked as deprecated.
 	}
 
 	if ep.BearerTokenSecret != nil && ep.BearerTokenSecret.Name != "" { //nolint:staticcheck // Ignore SA1019 this field is marked as deprecated.
-		level.Warn(cg.logger).Log("msg", "'bearerTokenSecret' is deprecated, use 'authorization' instead.")
+		level.Debug(cg.logger).Log("msg", "'bearerTokenSecret' is deprecated, use 'authorization' instead.")
 		if s, ok := store.TokenAssets[fmt.Sprintf("serviceMonitor/%s/%s/%d", m.Namespace, m.Name, i)]; ok {
 			cfg = append(cfg, yaml.MapItem{Key: "bearer_token", Value: s})
 		}
@@ -1743,7 +1743,7 @@ func (cg *ConfigGenerator) generateK8SSDConfig(
 
 		//nolint:staticcheck // Ignore SA1019 this field is marked as deprecated.
 		if apiserverConfig.BearerTokenFile != "" {
-			level.Warn(cg.logger).Log("msg", "'bearerTokenFile' is deprecated, use 'authorization' instead.")
+			level.Debug(cg.logger).Log("msg", "'bearerTokenFile' is deprecated, use 'authorization' instead.")
 			k8sSDConfig = append(k8sSDConfig, yaml.MapItem{Key: "bearer_token_file", Value: apiserverConfig.BearerTokenFile})
 		}
 
@@ -1803,7 +1803,7 @@ func (cg *ConfigGenerator) generateAlertmanagerConfig(alerting *monitoringv1.Ale
 
 		//nolint:staticcheck // Ignore SA1019 this field is marked as deprecated.
 		if am.BearerTokenFile != "" {
-			level.Warn(cg.logger).Log("msg", "'bearerTokenFile' is deprecated, use 'authorization' instead.")
+			level.Debug(cg.logger).Log("msg", "'bearerTokenFile' is deprecated, use 'authorization' instead.")
 			cfg = append(cfg, yaml.MapItem{Key: "bearer_token_file", Value: am.BearerTokenFile})
 		}
 
@@ -1934,7 +1934,7 @@ func (cg *ConfigGenerator) generateRemoteReadConfig(
 
 		//nolint:staticcheck // Ignore SA1019 this field is marked as deprecated.
 		if spec.BearerTokenFile != "" {
-			level.Warn(cg.logger).Log("msg", "'bearerTokenFile' is deprecated, use 'authorization' instead.")
+			level.Debug(cg.logger).Log("msg", "'bearerTokenFile' is deprecated, use 'authorization' instead.")
 			cfg = append(cfg, yaml.MapItem{Key: "bearer_token_file", Value: spec.BearerTokenFile})
 		}
 
@@ -2080,7 +2080,7 @@ func (cg *ConfigGenerator) generateRemoteWriteConfig(
 
 		//nolint:staticcheck // Ignore SA1019 this field is marked as deprecated.
 		if spec.BearerTokenFile != "" {
-			level.Warn(cg.logger).Log("msg", "'bearerTokenFile' is deprecated, use 'authorization' instead.")
+			level.Debug(cg.logger).Log("msg", "'bearerTokenFile' is deprecated, use 'authorization' instead.")
 			cfg = append(cfg, yaml.MapItem{Key: "bearer_token_file", Value: spec.BearerTokenFile})
 		}