Alert thresholds depend on the nature of your applications. Some queries may have arbitrary tolerance thresholds. Building an efficient monitoring platform takes time. 😉
4 Prometheus alerting rules for VMware. Exported via pryorda/vmware_exporter. These rules cover critical and warning conditions — copy and paste the YAML into your Prometheus configuration.
groups:
- name: PryordaVmwareExporter
rules:
- alert: VirtualMachineMemoryWarning
expr: vmware_vm_mem_usage_average / 100 >= 80 and vmware_vm_mem_usage_average / 100 < 90
for: 5m
labels:
severity: warning
annotations:
summary: Virtual Machine Memory Warning (instance {{ $labels.instance }})
description: "High memory usage on {{ $labels.instance }}: {{ $value | printf \"%.2f\"}}%\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
- alert: VirtualMachineMemoryCritical
expr: vmware_vm_mem_usage_average / 100 >= 90
for: 1m
labels:
severity: critical
annotations:
summary: Virtual Machine Memory Critical (instance {{ $labels.instance }})
description: "High memory usage on {{ $labels.instance }}: {{ $value | printf \"%.2f\"}}%\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
- alert: HighNumberOfSnapshots
expr: vmware_vm_snapshots > 3
for: 30m
labels:
severity: warning
annotations:
summary: High Number of Snapshots (instance {{ $labels.instance }})
description: "High snapshots number on {{ $labels.instance }}: {{ $value }}\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"
- alert: OutdatedSnapshots
expr: (time() - vmware_vm_snapshot_timestamp_seconds) / (60 * 60 * 24) >= 3
for: 5m
labels:
severity: warning
annotations:
summary: Outdated Snapshots (instance {{ $labels.instance }})
description: "Outdated snapshots on {{ $labels.instance }}: {{ $value | printf \"%.0f\"}} days\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" wget https://raw.githubusercontent.com/samber/awesome-prometheus-alerts/refs/heads/master/dist/rules/vmware/pryorda-vmware-exporter.yml
High memory usage on {{ $labels.instance }}: {{ $value | printf "%.2f"}}%
- alert: VirtualMachineMemoryWarning
expr: vmware_vm_mem_usage_average / 100 >= 80 and vmware_vm_mem_usage_average / 100 < 90
for: 5m
labels:
severity: warning
annotations:
summary: Virtual Machine Memory Warning (instance {{ $labels.instance }})
description: "High memory usage on {{ $labels.instance }}: {{ $value | printf \"%.2f\"}}%\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" High memory usage on {{ $labels.instance }}: {{ $value | printf "%.2f"}}%
- alert: VirtualMachineMemoryCritical
expr: vmware_vm_mem_usage_average / 100 >= 90
for: 1m
labels:
severity: critical
annotations:
summary: Virtual Machine Memory Critical (instance {{ $labels.instance }})
description: "High memory usage on {{ $labels.instance }}: {{ $value | printf \"%.2f\"}}%\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" High snapshots number on {{ $labels.instance }}: {{ $value }}
- alert: HighNumberOfSnapshots
expr: vmware_vm_snapshots > 3
for: 30m
labels:
severity: warning
annotations:
summary: High Number of Snapshots (instance {{ $labels.instance }})
description: "High snapshots number on {{ $labels.instance }}: {{ $value }}\n VALUE = {{ $value }}\n LABELS = {{ $labels }}" Outdated snapshots on {{ $labels.instance }}: {{ $value | printf "%.0f"}} days
- alert: OutdatedSnapshots
expr: (time() - vmware_vm_snapshot_timestamp_seconds) / (60 * 60 * 24) >= 3
for: 5m
labels:
severity: warning
annotations:
summary: Outdated Snapshots (instance {{ $labels.instance }})
description: "Outdated snapshots on {{ $labels.instance }}: {{ $value | printf \"%.0f\"}} days\n VALUE = {{ $value }}\n LABELS = {{ $labels }}"