#
# Alert Rules
#
groups:
- name: GeneralNodeExporterRules 
  rules:
  # TooMuch Data IN
  - alert: TooMuchNetworkThroughputIn
    expr: sum by (instance) (rate(node_network_receive_bytes_total[2m])) / 1024 / 1024 > 100
    for: 5m
    labels:
      severity: warning
    annotations:
      summary: Host unusual network throughput in (instance {{ $labels.instance }})
      description: "Host network interfaces are probably receiving too much data (> 100 MB/s)\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"
    
  - alert: AlertInodes
  expr: node_filesystem_files_free{mountpoint ="/"} / node_filesystem_files{mountpoint="/"} * 100 < 10 and ON (instance, device, mountpoint) node_filesystem_readonly{mountpoint="/"} == 0
  for: 2m
  labels:
    severity: warning
  annotations:
    summary: Host out of inodes (instance {{ $labels.instance }})
    description: "Disk is almost running out of available inodes (< 10% left)\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"

  - alert: HostSwapIsFillingUp
   expr: (1 - (node_memory_SwapFree / node_memory_SwapTotal)) * 100 > 80
   for: 2m
   labels:
     severity: warning
   annotations:
     summary: Host swap is filling up (instance {{ $labels.instance }})
     description: "Swap is filling up (>80%)\n  VALUE = {{ $value }}\n  LABELS = {{ $labels }}"