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2026-06-21 00:47:18 +08:00 · 2026-03-16 01:34:59 +00:00 · 2026-03-16 01:34:59 +00:00 · 9f6d4fd2a2
commit 9f6d4fd2a2
parent 3db9281508
1 changed files with 77 additions and 0 deletions
--- a/dist/rules/snmp/snmp-exporter.yml
+++ b/dist/rules/snmp/snmp-exporter.yml
@ -0,0 +1,77 @@
+groups:
+
+- name: SnmpExporter
+
+  # These rules use standard IF-MIB and SNMPv2-MIB metrics. Metric names depend on your snmp.yml module configuration.
+  # Thresholds for bandwidth and error rates are rough defaults - adjust to your environment.
+  
+  rules:
+
+    # From the official snmp-mixin.
+    - alert: SnmpTargetDown
+      expr: 'up{job=~"snmp.*"} == 0'
+      for: 5m
+      labels:
+        severity: critical
+      annotations:
+        summary: SNMP target down (instance {{ $labels.instance }})
+        description: "SNMP device {{ $labels.instance }} is unreachable.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
+
+    - alert: SnmpInterfaceDown
+      expr: 'ifOperStatus{ifAdminStatus="1"} == 2'
+      for: 2m
+      labels:
+        severity: critical
+      annotations:
+        summary: SNMP interface down (instance {{ $labels.instance }})
+        description: "Interface {{ $labels.ifDescr }} on {{ $labels.instance }} is operationally down while administratively up.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
+
+    # Threshold is a rough default. Adjust based on your network environment.
+    - alert: SnmpInterfaceHighInboundErrorRate
+      expr: 'rate(ifInErrors[5m]) / (rate(ifHCInUcastPkts[5m]) + rate(ifHCInBroadcastPkts[5m]) + rate(ifHCInMulticastPkts[5m])) > 0.05 and (rate(ifHCInUcastPkts[5m]) + rate(ifHCInBroadcastPkts[5m]) + rate(ifHCInMulticastPkts[5m])) > 0'
+      for: 5m
+      labels:
+        severity: warning
+      annotations:
+        summary: SNMP interface high inbound error rate (instance {{ $labels.instance }})
+        description: "Interface {{ $labels.ifDescr }} on {{ $labels.instance }} has an inbound error rate above 5%.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
+
+    # Threshold is a rough default. Adjust based on your network environment.
+    - alert: SnmpInterfaceHighOutboundErrorRate
+      expr: 'rate(ifOutErrors[5m]) / (rate(ifHCOutUcastPkts[5m]) + rate(ifHCOutBroadcastPkts[5m]) + rate(ifHCOutMulticastPkts[5m])) > 0.05 and (rate(ifHCOutUcastPkts[5m]) + rate(ifHCOutBroadcastPkts[5m]) + rate(ifHCOutMulticastPkts[5m])) > 0'
+      for: 5m
+      labels:
+        severity: warning
+      annotations:
+        summary: SNMP interface high outbound error rate (instance {{ $labels.instance }})
+        description: "Interface {{ $labels.ifDescr }} on {{ $labels.instance }} has an outbound error rate above 5%.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
+
+    # Threshold is a rough default. Adjust based on your link capacity and traffic patterns.
+    - alert: SnmpInterfaceHighBandwidthUsageInbound
+      expr: 'rate(ifHCInOctets[5m]) * 8 / ifSpeed > 0.80 and ifSpeed > 0'
+      for: 15m
+      labels:
+        severity: warning
+      annotations:
+        summary: SNMP interface high bandwidth usage inbound (instance {{ $labels.instance }})
+        description: "Interface {{ $labels.ifDescr }} on {{ $labels.instance }} inbound utilization is above 80%.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
+
+    # Threshold is a rough default. Adjust based on your link capacity and traffic patterns.
+    - alert: SnmpInterfaceHighBandwidthUsageOutbound
+      expr: 'rate(ifHCOutOctets[5m]) * 8 / ifSpeed > 0.80 and ifSpeed > 0'
+      for: 15m
+      labels:
+        severity: warning
+      annotations:
+        summary: SNMP interface high bandwidth usage outbound (instance {{ $labels.instance }})
+        description: "Interface {{ $labels.ifDescr }} on {{ $labels.instance }} outbound utilization is above 80%.\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
+
+    # sysUpTime is in centiseconds (hundredths of a second).
+    - alert: SnmpDeviceRestarted
+      expr: 'sysUpTime / 100 < 300'
+      for: 0m
+      labels:
+        severity: info
+      annotations:
+        summary: SNMP device restarted (instance {{ $labels.instance }})
+        description: "SNMP device {{ $labels.instance }} has restarted (uptime < 5 minutes).\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"