Added servicemonitor

Signed-off-by: Eugene Bykov <44170496+eabykov@users.noreply.github.com>

Update README.md

Signed-off-by: Eugene Bykov <44170496+eabykov@users.noreply.github.com>

Update values.yaml

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Update service.yaml

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Update values.yaml

Signed-off-by: Eugene Bykov <44170496+eabykov@users.noreply.github.com>

Update service.yaml

Signed-off-by: Eugene Bykov <44170496+eabykov@users.noreply.github.com>

Create servicemonitor.yaml

Signed-off-by: Eugene Bykov <44170496+eabykov@users.noreply.github.com>

Update service.yaml

Signed-off-by: Eugene Bykov <44170496+eabykov@users.noreply.github.com>

Create service.yaml

Signed-off-by: Eugene Bykov <44170496+eabykov@users.noreply.github.com>

charts/flagger/README.md

@@ -140,6 +140,7 @@ The following tables lists the configurable parameters of the Flagger chart and
 | `prometheus.install`                 | If `true`, installs Prometheus configured to scrape all pods in the custer                                                                         | `false`                               |
 | `prometheus.retention`               | Prometheus data retention                                                                                                                          | `2h`                                  |
 | `selectorLabels`                     | List of labels that Flagger uses to create pod selectors                                                                                           | `app,name,app.kubernetes.io/name`     |
+| `serviceMonitor.enabled`             | If `true`, creates service and serviceMonitor for monitoring Flagger metrics                                                                                           | `false`     |
 | `configTracking.enabled`             | If `true`, flagger will track changes in Secrets and ConfigMaps referenced in the target deployment                                                | `true`                                |
 | `eventWebhook`                       | If set, Flagger will publish events to the given webhook                                                                                           | None                                  |
 | `slack.url`                          | Slack incoming webhook                                                                                                                             | None                                  |

charts/flagger/templates/service.yaml

@@ -0,0 +1,19 @@
+{{- if .Values.serviceMonitor.enabled }}
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ template "flagger.name" . }}
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app.kubernetes.io/name: {{ template "flagger.name" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+spec:
+  ports:
+    - name: http
+      port: 8080
+      targetPort: http
+      protocol: TCP
+  selector:
+    app.kubernetes.io/name: {{ template "flagger.name" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}

charts/flagger/templates/servicemonitor.yaml

@@ -0,0 +1,24 @@
+{{- if .Values.serviceMonitor.enabled }}
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  name: {{ template "flagger.name" . }}
+  namespace: {{ .Release.Namespace }}
+  labels:
+    app.kubernetes.io/name: {{ template "flagger.name" . }}
+    app.kubernetes.io/instance: {{ .Release.Name }}
+spec:
+  endpoints:
+    - path: /metrics
+      port: http
+      interval: 30s
+      scrapeTimeout: 30s
+      honorLabels: false
+  namespaceSelector:
+    matchNames:
+      - {{ .Release.Namespace }}
+  selector:
+    matchLabels:
+      app.kubernetes.io/name: {{ template "flagger.name" . }}
+      app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end }}

charts/flagger/values.yaml

@@ -23,6 +23,10 @@ podPriorityClassName: ""
 
 metricsServer: "http://prometheus:9090"
 
+# creates serviceMonitor for monitoring Flagger metrics
+serviceMonitor:
+  enabled: false
+
 # accepted values are kubernetes, istio, linkerd, appmesh, contour, nginx, gloo, skipper, traefik, apisix, osm
 meshProvider: ""