feat(metrics): loki service monitor

to enable use feature flag in values

!1

templates/ServiceMonitor-Loki.yaml

@@ -0,0 +1,37 @@
+---
+{{- if .Values.nfc_monitoring.loki.enabled | default false -}}
+
+apiVersion: monitoring.coreos.com/v1
+kind: ServiceMonitor
+metadata:
+  labels:
+    app.kubernetes.io/name: loki
+    app.kubernetes.io/component: logging
+    app.kubernetes.io/part-of: {{ $.Chart.Name }}
+    app.kubernetes.io/version: {{ $.Chart.Version }}
+    app.kubernetes.io/managed-by: {{ $.Release.Service }}
+
+  name: loki
+  namespace: {{ .Values.nfc_monitoring.loki.namespace }}
+spec:
+  endpoints:
+  - bearerTokenFile: /var/run/secrets/kubernetes.io/serviceaccount/token
+    interval: 15s
+    port: loki
+    # relabelings:
+    # - action: replace
+    #   regex: (.*)
+    #   replacement: $1
+    #   sourceLabels:
+    #   - __meta_kubernetes_pod_node_name
+    #   targetLabel: instance
+    scheme: http
+    # tlsConfig:
+    #   insecureSkipVerify: true
+  targetLabels:
+    - cluster
+  jobLabel: app.kubernetes.io/name
+  selector:
+{{ .Values.nfc_monitoring.loki.ServiceMonitor.selector | toYaml | indent 4 }}
+
+{{- end -}}

values.yaml

@@ -36,12 +36,23 @@ nfc_monitoring:
 
 
   loki:
+
+    enabled: false
+
     image: 
       name: grafana/loki
       tag: 2.7.4
+
     namespace: loki
+
     service_name: loki
 
+    ServiceMonitor:
+      selector:
+        matchLabels:
+          app.kubernetes.io/name: loki
+          app.kubernetes.io/component: logging
+
 
   kube_monitor_proxy:
     namespace: monitoring