7.5. 灾难恢复警报

记录规则

• record: ramen_sync_duration_seconds

  表达式

  sum by (obj_name, obj_namespace, obj_type, job, policyname)(time() - (ramen_last_sync_timestamp_seconds > 0))

  用途

  卷组最后一次同步时间和时间（以秒为单位）之间的时间间隔。

• Record: ramen_rpo_difference

  表达式

  ramen_sync_duration_seconds{job="ramen-hub-operator-metrics-service"} / on(policyname, job) group_left() (ramen_policy_schedule_interval_seconds{job="ramen-hub-operator-metrics-service"})

  用途

  预期同步延迟和卷复制组所使用的实际同步延迟之间的差别。

• Record: count_persistentvolumeclaim_total

  表达式

  count(kube_persistentvolumeclaim_info)

  用途

  来自受管集群的所有 PVC 的总和。

警报

• alert: VolumeSynchronizationDelay

  影响

  Critical

  用途

  卷复制组占用的实际同步延迟是延迟预期同步延迟。

  YAML

  alert: VolumeSynchronizationDelay
  expr: ramen_rpo_difference >= 3
  for: 5s
  labels:
    severity: critical
  annotations:
    description: "The syncing of volumes is exceeding three times the scheduled snapshot interval, or the volumes have been recently protected. (DRPC: {{ $labels.obj_name }}, Namespace: {{ $labels.obj_namespace }})"
    alert_type: "DisasterRecovery"

• alert: VolumeSynchronizationDelay

  影响

  Warning

  用途

  卷复制组占用的实际同步延迟是预期的同步延迟的两倍。

  YAML

  alert: VolumeSynchronizationDelay
  expr: ramen_rpo_difference > 2 and ramen_rpo_difference < 3
  for: 5s
  labels:
    severity: warning
  annotations:
    description: "The syncing of volumes is exceeding two times the scheduled snapshot interval, or the volumes have been recently protected. (DRPC: {{ $labels.obj_name }}, Namespace: {{ $labels.obj_namespace }})"
    alert_type: "DisasterRecovery"

• 警报： WorkloadUnprotected

  影响

  Warning

  用途

  应用程序保护状态降级超过 10 分钟

  YAML

  alert: WorkloadUnprotected
  expr: ramen_workload_protection_status == 0
  for: 10m
  labels:
    severity: warning
  annotations:
    description: "Workload is not protected for disaster recovery (DRPC: {{ $labels.obj_name }}, Namespace: {{ $labels.obj_namespace }})."
    alert_type: "DisasterRecovery"