fix(bug修复): 查询bug

luoyb

2021-06-03 ae8267320996082be9bae84aa5248ca76d735777

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groups:
  - name: memory_over
    rules:
      - alert: NodeMemoryUsage
        expr: (node_memory_MemTotal_bytes - (node_memory_MemFree_bytes+node_memory_Buffers_bytes+node_memory_Cached_bytes )) / node_memory_MemTotal_bytes * 100 > 80
        for: 20s
        labels:
          user: MrBird
        annotations:
          summary: "{{$labels.instance}}: High Memory usage detected"
          description: "{{$labels.instance}}: Memory usage is above 80% (current value is:{{ $value }})"