此處記錄prometheus監控項，exporter為 node_exporter

vim rules.yml

groups:
- name: node
  rules:
  - alert: server_status
    expr: up{job="node"} == 0
    for: 15s
    labels:
      severity: 'critical'
    annotations:
      summary: " node_exporter is down"
- name: cluster
  rules:
  - alert: CPU
    expr: (
 
1-rate(node_cpu_seconds_total{mode="idle"}[1m]))*100 > 90
    for: 5s
    labels:
      severity: 'warning'
    annotations:
      summary: " cpu利用率超過 90%，{{ .Labels.name }}當前值: {{ $value }}%"
#  - alert: LOAD1
#    expr: node_load5 > Logical_CPU_core_total*0.3 or node_load1 > Logical_CPU_core_total*0.4
 
 or node_load15 >  Logical_CPU_core_total*0.2
#    for: 5s
#    labels:
#      severity: 'critical'
#    annotations:
#      summary: " load過高 當前值為 {{ $value }}"
  - alert: LOAD1
    expr: node_load1 > Logical_CPU_core_total*3
    for: 5s
    labels:
      severity: 'warning'
    annotations:
      summary: 
 
" load1>cpu*3 當前值為 {{ $value }}"
  - alert: LOAD5
    expr:  node_load5 > Logical_CPU_core_total*2
    for: 5s
    labels:
      severity: 'warning'
    annotations:
      summary: " load5>cpu*2 當前值為 {{ $value }}"
  - alert: LOAD15
    expr: node_load15 >  Logical_CPU_core_total*2
    for: 5s
    labels:
      severity: 'warning'
    annotations:
      summary: " load15>cpu*2 當前值為 {{ $value }}"
  - alert: space_root
    expr: (1-node_filesystem_avail_bytes{fstype=~"xfs|ext4",mountpoint="/"}/node_filesystem_size_bytes{fstype=~"xfs|ext4",mountpoint="/"})*100 > 80
    for: 5s
    labels:
      severity: 'critical'
    annotations:
      summary: " /下空間使用率大於80%  當前值為{{ $value }}% "
  - alert: space_data
    expr: (1-node_filesystem_avail_bytes{fstype=~"xfs|ext4",mountpoint="/data"}/node_filesystem_size_bytes{fstype=~"xfs|ext4",mountpoint="/data"})*100 > 80
    for: 5s
    labels:
      severity: 'critical'
    annotations:
      summary: " /data空間使用率大於80% 當前值為{{ $value }}% "
  - alert: upload_rate
    expr: rate(node_network_transmit_bytes_total{device="eth0"}[1m])/1048576 > 10
    for: 5s
    labels:
      severity: 'warning'
    annotations:
      summary: " 上傳速率大於10M 當前值為{{ $value }}M"
  - alert: download_rate
    expr: rate(node_network_receive_bytes_total{device="eth0"}[1m])/1048576 > 10
    for: 5s
    labels:
      severity: 'warning'
    annotations:
      summary: " 下載速率大於10M 當前值為{{ $value }}M "
  - alert: inode_size
    expr: (1-node_filesystem_files_free{fstype=~"xfs|ext4",mountpoint="/"}/node_filesystem_files{fstype=~"xfs|ext4",mountpoint="/"})*100 > 50
    for: 5s
    labels:
      severity: 'critical'
    annotations:
      summary: " /下inode使用率大於50% 當前值為{{ $value }}% "
  - alert: Memory_usage
    expr: (1-(node_memory_MemAvailable_bytes)/node_memory_MemTotal_bytes)*100 > 80
    for: 5s
    labels:
      severity: 'warning'
    annotations:
      summary: "記憶體使用率大於80% 當前值為{{ $value }}% "
  - alert: iowait
    expr: (avg by (instance) (rate(node_cpu_seconds_total{mode="iowait"}[5m])) * 100) > 50
    for: 5s
    labels:
      severity: 'critical'
    annotations:
      summary: "cpu iowait大於50% 當前值為{{ $value }}% "
  - alert: procs_zombie
    expr: procs_zombie > 20
    for: 5s
    labels:
      severity: 'critical'
    annotations:
      summary: " procs_zombie 大於20 當前值為{{ $value }} "
  - alert: logined_users
    expr: logined_users_total > 25
    for: 5s
    labels:
      severity: 'critical'
    annotations:
      summary: "logined_users 大於25 當前值為{{ $value }} "