Support profiling for keda components

keda/README.md

@@ -126,6 +126,8 @@ their default values.
 | `podDisruptionBudget.operator` | object | `{}` | Capability to configure [Pod Disruption Budget] |
 | `podLabels.keda` | object | `{}` | Pod labels for KEDA operator |
 | `podSecurityContext.operator` | object | [See below](#KEDA-is-secure-by-default) | [Pod security context] of the KEDA operator pod |
+| `profiling.keda.enabled` | bool | `false` | Enable profiling for keda operator |
+| `profiling.keda.port` | int | `8082` | Expose profiling on specific port |
 | `resources.operator` | object | `{"limits":{"cpu":1,"memory":"1000Mi"},"requests":{"cpu":"100m","memory":"100Mi"}}` | Manage [resource request & limits] of KEDA operator pod |
 | `securityContext.operator` | object | [See below](#KEDA-is-secure-by-default) | [Security context] of the operator container |
 | `topologySpreadConstraints.operator` | list | `[]` | [Pod Topology Constraints] of KEDA operator pod |
@@ -153,6 +155,8 @@ their default values.
 | `podDisruptionBudget.metricServer` | object | `{}` | Capability to configure [Pod Disruption Budget] |
 | `podLabels.metricsAdapter` | object | `{}` | Pod labels for KEDA Metrics Adapter |
 | `podSecurityContext.metricServer` | object | [See below](#KEDA-is-secure-by-default) | [Pod security context] of the KEDA metrics apiserver pod |
+| `profiling.metricsApiServer.enabled` | bool | `false` | Enable profiling for keda metrics server |
+| `profiling.metricsApiServer.port` | int | `8083` | Expose profiling on specific port  |
 | `resources.metricServer` | object | `{"limits":{"cpu":1,"memory":"1000Mi"},"requests":{"cpu":"100m","memory":"100Mi"}}` | Manage [resource request & limits] of KEDA metrics apiserver pod |
 | `securityContext.metricServer` | object | [See below](#KEDA-is-secure-by-default) | [Security context] of the metricServer container |
 | `service.annotations` | object | `{}` | Annotations to add the KEDA Metric Server service |
@@ -244,6 +248,8 @@ their default values.
 | `podDisruptionBudget.webhooks` | object | `{}` | Capability to configure [Pod Disruption Budget] |
 | `podLabels.webhooks` | object | `{}` | Pod labels for KEDA Admission webhooks |
 | `podSecurityContext.webhooks` | object | [See below](#KEDA-is-secure-by-default) | [Pod security context] of the KEDA admission webhooks |
+| `profiling.webhooks.enabled` | bool | `false` | Enable profiling for keda admission webhook |
+| `profiling.webhooks.port` | int | `8084` | Expose profiling on specific port |
 | `prometheus.webhooks.enabled` | bool | `false` | Enable KEDA admission webhooks prometheus metrics expose |
 | `prometheus.webhooks.port` | int | `8080` | Port used for exposing KEDA admission webhooks prometheus metrics |
 | `prometheus.webhooks.prometheusRules.additionalLabels` | object | `{}` | Additional labels to add for KEDA admission webhooks using prometheusRules crd (prometheus operator) |

keda/templates/manager/deployment.yaml

@@ -93,6 +93,9 @@ spec:
           {{- if .Values.opentelemetry.operator.enabled }}
           - "--enable-opentelemetry-metrics={{ .Values.opentelemetry.operator.enabled}}"
           {{- end }}
+          {{- if .Values.profiling.keda.enabled }}
+          - "--profiling-bind-address=:{{ .Values.profiling.keda.port }}"
+          {{- end }}
           {{- range $key, $value := .Values.extraArgs.keda }}
           - "--{{ $key }}={{ $value }}"
           {{- end }}

keda/templates/manager/service.yaml

@@ -34,5 +34,10 @@ spec:
     port: {{ .Values.prometheus.operator.port }}
     targetPort: {{ .Values.prometheus.operator.port }}
   {{- end }}
+  {{- if .Values.profiling.keda.enabled }}
+  - name: profiling
+    port: {{ .Values.profiling.keda.port }}
+    targetPort: {{ .Values.profiling.keda.port }}
+  {{- end }}
   selector:
     app: {{ .Values.operator.name }}

keda/templates/metrics-server/deployment.yaml

@@ -128,6 +128,9 @@ spec:
           - --tls-private-key-file={{ .Values.certificates.mountPath }}/tls.key
           - --cert-dir={{ .Values.certificates.mountPath }}
           - --v={{ .Values.logging.metricServer.level }}
+          {{- if .Values.profiling.metricsApiServer.enabled }}
+          - "--profiling-bind-address=:{{ .Values.profiling.metricsApiServer.port }}"
+          {{- end }}
           {{- range $key, $value := .Values.extraArgs.metricsAdapter }}
           - --{{ $key }}={{ $value }}
           {{- end }}

keda/templates/metrics-server/service.yaml

@@ -35,5 +35,11 @@ spec:
     port: {{ .Values.prometheus.metricServer.port }}
     targetPort: {{ .Values.prometheus.metricServer.port }}
     protocol: TCP
+  {{- if .Values.profiling.metricsApiServer.enabled }}
+  - name: profiling
+    port: {{ .Values.profiling.metricsApiServer.port }}
+    targetPort: {{ .Values.profiling.metricsApiServer.port }}
+    protocol: TCP
+  {{- end }}
   selector:
     app: {{ .Values.operator.name }}-metrics-apiserver

keda/templates/webhooks/deployment.yaml

@@ -79,6 +79,9 @@ spec:
           - "--port={{ .Values.webhooks.port }}"
           {{- end }}
           - --metrics-bind-address=:{{ .Values.prometheus.webhooks.port }}
+          {{- if .Values.profiling.webhooks.enabled }}
+          - "--profiling-bind-address=:{{ .Values.profiling.webhooks.port }}"
+          {{- end }}
           {{- range $key, $value := .Values.extraArgs.webhooks }}
           - --{{ $key }}={{ $value }}
           {{- end }}

keda/templates/webhooks/service.yaml

@@ -36,6 +36,11 @@ spec:
     port: {{ .Values.prometheus.webhooks.port }}
     targetPort: {{ .Values.prometheus.webhooks.port }}
   {{- end }}
+  {{- if .Values.profiling.webhooks.enabled }}
+  - name: profiling
+    port: {{ .Values.profiling.webhooks.port }}
+    targetPort: {{ .Values.profiling.webhooks.port }}
+  {{- end }}
   selector:
     app: {{ .Values.webhooks.name }}
 {{- end }}

keda/values.yaml

@@ -459,6 +459,21 @@ http:
   # -- The minimum TLS version to use for all scalers that use raw HTTP clients (some scalers use SDKs to access target services. These have built-in HTTP clients, and this value does not necessarily apply to them)
   minTlsVersion: TLS12
 
+## This setting let you enable profiling for all of the components of keda and in specific port you choose
+## This can be useful when trying to investigate errors like memory leak or cpu or even look at goroutines to understand better
+## This setting is disabled by default
+profiling:
+  keda:
+    enabled: false
+    port: 8082
+  metricsApiServer:
+    enabled: false
+    port: 8083
+  webhooks:
+    enabled: false
+    port: 8084
+
+
 ## Extra KEDA Operator and Metrics Adapter container arguments
 extraArgs:
   # -- Additional KEDA Operator container arguments