Migrate to Prometheus Operator

longhorn-system/application-extras.yml

@@ -0,0 +1,126 @@
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  name: longhorn-dashboard
+  namespace: longhorn-system
+  annotations:
+    kubernetes.io/ingress.class: traefik
+    cert-manager.io/cluster-issuer: default
+    external-dns.alpha.kubernetes.io/target: traefik.k-space.ee
+    traefik.ingress.kubernetes.io/router.entrypoints: websecure
+    traefik.ingress.kubernetes.io/router.middlewares: traefik-sso@kubernetescrd
+    traefik.ingress.kubernetes.io/router.tls: "true"
+spec:
+  rules:
+  - host: longhorn.k-space.ee
+    http:
+      paths:
+      - pathType: Prefix
+        path: "/"
+        backend:
+          service:
+            name: longhorn-frontend
+            port:
+              number: 80
+  tls:
+  - hosts:
+    - longhorn.k-space.ee
+    secretName: longhorn-tls
+
+---
+apiVersion: monitoring.coreos.com/v1
+kind: PodMonitor
+metadata:
+  name: manager
+spec:
+  selector: {}
+  podMetricsEndpoints:
+    - port: manager
+---
+apiVersion: monitoring.coreos.com/v1
+kind: PrometheusRule
+metadata:
+  name: longhorn
+spec:
+  # Copied from https://longhorn.io/docs/1.2.4/monitoring/alert-rules-example/
+  groups:
+    - name: longhorn
+      rules:
+      - alert: LonghornVolumeActualSpaceUsedWarning
+        annotations:
+          description: The accumulated snapshots for volume use up more space than the volume's capacity
+          summary: The actual used space of Longhorn volume is twice the size of the volume capacity.
+        expr: longhorn_volume_actual_size_bytes > longhorn_volume_capacity_bytes * 2
+        for: 5m
+        labels:
+          issue: The actual used space of Longhorn volume {{$labels.volume}} on {{$labels.node}} is high.
+          severity: warning
+      - alert: LonghornVolumeStatusCritical
+        annotations:
+          description: Longhorn volume {{$labels.volume}} on {{$labels.node}} is Fault for
+            more than 2 minutes.
+          summary: Longhorn volume {{$labels.volume}} is Fault
+        expr: longhorn_volume_robustness == 3
+        for: 5m
+        labels:
+          issue: Longhorn volume {{$labels.volume}} is Fault.
+          severity: critical
+      - alert: LonghornVolumeStatusWarning
+        annotations:
+          description: Longhorn volume {{$labels.volume}} on {{$labels.node}} is Degraded for
+            more than 5 minutes.
+          summary: Longhorn volume {{$labels.volume}} is Degraded
+        expr: longhorn_volume_robustness == 2
+        for: 5m
+        labels:
+          issue: Longhorn volume {{$labels.volume}} is Degraded.
+          severity: warning
+      - alert: LonghornNodeStorageWarning
+        annotations:
+          description: The used storage of node {{$labels.node}} is at {{$value}}% capacity for
+            more than 5 minutes.
+          summary:  The used storage of node is over 70% of the capacity.
+        expr: (longhorn_node_storage_usage_bytes / longhorn_node_storage_capacity_bytes) * 100 > 70
+        for: 5m
+        labels:
+          issue: The used storage of node {{$labels.node}} is high.
+          severity: warning
+      - alert: LonghornDiskStorageWarning
+        annotations:
+          description: The used storage of disk {{$labels.disk}} on node {{$labels.node}} is at {{$value}}% capacity for
+            more than 5 minutes.
+          summary:  The used storage of disk is over 70% of the capacity.
+        expr: (longhorn_disk_usage_bytes / longhorn_disk_capacity_bytes) * 100 > 70
+        for: 5m
+        labels:
+          issue: The used storage of disk {{$labels.disk}} on node {{$labels.node}} is high.
+          severity: warning
+      - alert: LonghornNodeDown
+        annotations:
+          description: There are {{$value}} Longhorn nodes which have been offline for more than 5 minutes.
+          summary: Longhorn nodes is offline
+        expr: (avg(longhorn_node_count_total) or on() vector(0)) - (count(longhorn_node_status{condition="ready"} == 1) or on() vector(0)) > 0
+        for: 5m
+        labels:
+          issue: There are {{$value}} Longhorn nodes are offline
+          severity: critical
+      - alert: LonghornIntanceManagerCPUUsageWarning
+        annotations:
+          description: Longhorn instance manager {{$labels.instance_manager}} on {{$labels.node}} has CPU Usage / CPU request is {{$value}}% for
+            more than 5 minutes.
+          summary: Longhorn instance manager {{$labels.instance_manager}} on {{$labels.node}} has CPU Usage / CPU request is over 300%.
+        expr: (longhorn_instance_manager_cpu_usage_millicpu/longhorn_instance_manager_cpu_requests_millicpu) * 100 > 300
+        for: 5m
+        labels:
+          issue: Longhorn instance manager {{$labels.instance_manager}} on {{$labels.node}} consumes 3 times the CPU request.
+          severity: warning
+      - alert: LonghornNodeCPUUsageWarning
+        annotations:
+          description: Longhorn node {{$labels.node}} has CPU Usage / CPU capacity is {{$value}}% for
+            more than 5 minutes.
+          summary: Longhorn node {{$labels.node}} experiences high CPU pressure for more than 5m.
+        expr: (longhorn_node_cpu_usage_millicpu / longhorn_node_cpu_capacity_millicpu) * 100 > 90
+        for: 5m
+        labels:
+          issue: Longhorn node {{$labels.node}} experiences high CPU pressure.
+          severity: warning