feat(prometheus): add alerting rules and alertmanager config

prometheus-stack/k8s/grafana-values.yaml

@@ -14,7 +14,8 @@ grafana:
 
   persistence:
     enabled: true
-    size: 10Gi
+    storageClassName: local-path-retain
+    size: 20Gi
 
   ingress:
     enabled: false
@@ -24,10 +25,12 @@ grafana:
 
 prometheus:
   prometheusSpec:
+    retention: 60d
+    retentionSize: 32GB
     storageSpec:
       volumeClaimTemplate:
         spec:
-          storageClassName: "local-path"
+          storageClassName: "local-path-retain"
           accessModes:
             - ReadWriteOnce
           resources:
@@ -41,12 +44,17 @@ prometheus:
         memory: "2Gi"
 alertmanager:
   alertmanagerSpec:
+    configSecret: alertmanager-config
     storage:
       volumeClaimTemplate:
         spec:
+          storageClassName: local-path-retain
           accessModes:
             - ReadWriteOnce
-
           resources:
             requests:
-              storage: 20Gi
+              storage: 10Gi
+
+defaultRules:
+  disabled:
+    CPUThrottlingHigh: true