obs,vicm,loki: fix chart version, config values

kubernetes/infrastructure/observability/vmalert-rules.yaml

@@ -1,37 +1,38 @@
-apiVersion: v1
-kind: ConfigMap
+# VMRule CR for custom alerting rules (node CPU/RAM/disk).
+# The VictoriaMetrics operator's vmalert picks this up automatically via
+# selectAllByDefault
+apiVersion: victoriametrics.com/v1beta1
+kind: VMRule
 metadata:
-  name: vmalert-rules
+  name: node-alerts
   namespace: observability
-  labels:
-    app.kubernetes.io/name: vmalert
-    app.kubernetes.io/component: alerting-rules
-data:
-  node.rules: |
-    groups:
-      - name: node
-        rules:
-          - alert: HighNodeCPU
-            expr: 100 - (avg by(instance)(rate(node_cpu_seconds_total{mode="idle"}[5m])) * 100) > 90
-            for: 5m
-            labels:
-              severity: warning
-            annotations:
-              summary: "High CPU on {{ $labels.instance }}"
-              description: "CPU usage above 90% for 5m on {{ $labels.instance }}."
-          - alert: HighNodeRAM
-            expr: 1 - (node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes) > 0.9
-            for: 10m
-            labels:
-              severity: warning
-            annotations:
-              summary: "RAM >90% on {{ $labels.instance }}"
-              description: "Available RAM below 10% for 10m on {{ $labels.instance }}."
-          - alert: LowDiskSpace
-            expr: 1 - (node_filesystem_avail_bytes / node_filesystem_size_bytes{fstype!~"tmpfs|overlay"}) > 0.85
-            for: 10m
-            labels:
-              severity: warning
-            annotations:
-              summary: "Disk >85% full on {{ $labels.instance }} {{ $labels.mountpoint }}"
-              description: "Filesystem {{ $labels.mountpoint }} on {{ $labels.instance }} is more than 85% full for 10m."
+spec:
+  groups:
+    - name: node
+      rules:
+        - alert: HighNodeCPU
+          expr: 100 - (avg by (instance) (rate(node_cpu_seconds_total{mode="idle"}[5m])) * 100) > 80
+          for: 10m
+          labels:
+            severity: warning
+          annotations:
+            summary: "High CPU on {{ $labels.instance }}"
+            description: "CPU usage above 80% for 10 minutes."
+        - alert: HighNodeRAM
+          expr: 100 - ((node_memory_MemAvailable_bytes / node_memory_MemTotal_bytes) * 100) > 85
+          for: 10m
+          labels:
+            severity: warning
+          annotations:
+            summary: "High RAM on {{ $labels.instance }}"
+            description: "RAM usage above 85% for 10 minutes."
+        - alert: LowDiskSpace
+          expr: |
+            100 - ((node_filesystem_avail_bytes{mountpoint!~"/run.*|/var/lib/docker.*"} /
+                    node_filesystem_size_bytes{mountpoint!~"/run.*|/var/lib/docker.*"}) * 100) > 85
+          for: 10m
+          labels:
+            severity: warning
+          annotations:
+            summary: "Low disk space on {{ $labels.instance }} {{ $labels.mountpoint }}"
+            description: "Disk usage above 85% for 10 minutes."