Show only logs with a severity level of ERROR or higher in the stderr (…

…kedacore#506)

Signed-off-by: Adarsh-verma-14 <t_adarsh.verma@india.nec.com>

keda/README.md

@@ -141,6 +141,7 @@ their default values.
 | `image.metricsApiServer.repository` | string | `"ghcr.io/kedacore/keda-metrics-apiserver"` | Image name of KEDA Metrics API Server |
 | `image.metricsApiServer.tag` | string | `""` | Image tag of KEDA Metrics API Server. Optional, given app version of Helm chart is used by default |
 | `logging.metricServer.level` | int | `0` | Logging level for Metrics Server. allowed values: `0` for info, `4` for debug, or an integer value greater than 0, specified as string |
+| `logging.metricServer.stderrthreshold` | string | `"ERROR"` | Logging stderrthreshold for Metrics Server allowed values: 'DEBUG','INFO','WARN','ERROR','ALERT','EMERG' |
 | `metricsServer.affinity` | object | `{}` | [Affinity] for pod scheduling for Metrics API Server. Takes precedence over the `affinity` field |
 | `metricsServer.dnsPolicy` | string | `"ClusterFirst"` | Defined the DNS policy for the metric server |
 | `metricsServer.livenessProbe` | object | `{"failureThreshold":3,"initialDelaySeconds":5,"periodSeconds":10,"successThreshold":1,"timeoutSeconds":1}` | Liveness probes for Metrics API Server ([docs](https://kubernetes.io/docs/tasks/configure-pod-container/configure-liveness-readiness-startup-probes/)) |

keda/templates/metrics-server/deployment.yaml

@@ -122,6 +122,7 @@ spec:
  - --port={{ .Values.prometheus.metricServer.port }}
  - --secure-port={{ .Values.service.portHttpsTarget }}
  - --logtostderr=true
+ - --stderrthreshold={{ .Values.logging.metricServer.stderrthreshold }}
  - --metrics-service-address={{ .Values.operator.name }}.{{ .Release.Namespace }}.svc.{{ .Values.clusterDomain }}:9666
  - --client-ca-file={{ .Values.certificates.mountPath }}/ca.crt
  - --tls-cert-file={{ .Values.certificates.mountPath }}/tls.crt

keda/values.yaml

@@ -305,7 +305,9 @@ logging:
  # -- Logging level for Metrics Server.
  # allowed values: `0` for info, `4` for debug, or an integer value greater than 0, specified as string
  level: 0
-
+ # -- Logging stderrthreshold for Metrics Server
+ # allowed values: 'DEBUG','INFO','WARN','ERROR','ALERT','EMERG'
+ stderrthreshold: ERROR
  webhooks:
  # -- Logging level for KEDA Operator.
  # allowed values: `debug`, `info`, `error`, or an integer value greater than 0, specified as string