prometheus节点CPU、内存、磁盘使用率的报警规则 以及 node-exporter应建的报警规则 均以yaml文件 promql 格式表示

好的，以下是 prometheus 节点 CPU、内存、磁盘使用率的报警规则和 node-exporter 应建的报警规则的 yaml 配置文件示例：

1. prometheus 节点 CPU、内存、磁盘使用率的报警规则

groups:
- name: prometheus_rules
  rules:
  - alert: NodeCPUUsageHigh
    expr: 100 * (1 - avg(irate(node_cpu_seconds_total{mode="idle"}[5m])) by (instance)) > 90
    for: 5m
    labels:
      severity: warning
    annotations:
      summary: "CPU usage is high on instance {{ $labels.instance }}"
      description: "CPU usage is high on instance {{ $labels.instance }} (value: {{ $value }})."
  - alert: NodeMemoryUsageHigh
    expr: 100 * (node_memory_MemTotal_bytes - node_memory_MemFree_bytes - node_memory_Buffers_bytes - node_memory_Cached_bytes) / node_memory_MemTotal_bytes > 90
    for: 5m
    labels:
      severity: warning
    annotations:
      summary: "Memory usage is high on instance {{ $labels.instance }}"
      description: "Memory usage is high on instance {{ $labels.instance }} (value: {{ $value }})."
  - alert: NodeDiskUsageHigh
    expr: 100 * node_filesystem_size_bytes{fstype!="tmpfs", fstype!="rootfs"} - node_filesystem_free_bytes{fstype!="tmpfs", fstype!="rootfs"} > 90 * node_filesystem_size_bytes{fstype!="tmpfs", fstype!="rootfs"}
    for: 5m
    labels:
      severity: warning
    annotations:
      summary: "Disk usage is high on instance {{ $labels.instance }}"
      description: "Disk usage is high on instance {{ $labels.instance }} (value: {{ $value }})."

2. node-exporter 应建的报警规则

groups:
- name: node_exporter_rules
  rules:
  - alert: NodeCPUUsageHigh
    expr: 100 * (1 - avg(irate(node_cpu_seconds_total{mode="idle"}[5m])) by (instance)) > 90
    for: 5m
    labels:
      severity: warning
    annotations:
      summary: "CPU usage is high on instance {{ $labels.instance }}"
      description: "CPU usage is high on instance {{ $labels.instance }} (value: {{ $value }})."
  - alert: NodeMemoryUsageHigh
    expr: 100 * (node_memory_MemTotal_bytes - node_memory_MemFree_bytes - node_memory_Buffers_bytes - node_memory_Cached_bytes) / node_memory_MemTotal_bytes > 90
    for: 5m
    labels:
      severity: warning
    annotations:
      summary: "Memory usage is high on instance {{ $labels.instance }}"
      description: "Memory usage is high on instance {{ $labels.instance }} (value: {{ $value }})."
  - alert: NodeDiskUsageHigh
    expr: 100 * node_filesystem_size_bytes{fstype!="tmpfs", fstype!="rootfs"} - node_filesystem_free_bytes{fstype!="tmpfs", fstype!="rootfs"} > 90 * node_filesystem_size_bytes{fstype!="tmpfs", fstype!="rootfs"}
    for: 5m
    labels:
      severity: warning
    annotations:
      summary: "Disk usage is high on instance {{ $labels.instance }}"
      description: "Disk usage is high on instance {{ $labels.instance }} (value: {{ $value }})."
  - alert: NetworkTrafficHigh
    expr: sum(rate(node_network_receive_bytes_total[5m]) + rate(node_network_transmit_bytes_total[5m])) by (instance) > 1e+08
    for: 5m
    labels:
      severity: warning
    annotations:
      summary: "Network traffic is high on instance {{ $labels.instance }}"
      description: "Network traffic is high on instance {{ $labels.instance }} (value: {{ $value }})."
  - alert: ProcessCountHigh
    expr: count(processes) by (instance) > 600
    for: 5m
    labels:
      severity: warning
    annotations:
      summary: "Process count is high on instance {{ $labels.instance }}"
      description: "Process count is high on instance {{ $labels.instance }} (value: {{ $value }})."
  - alert: SystemLoadHigh
    expr: node_load1 > 2.5 or node_load5 > 2 or node_load15 > 1.5
    for: 5m
    labels:
      severity: warning
    annotations:
      summary: "System load is high on instance {{ $labels.instance }}"
      description: "System load is high on instance {{ $labels.instance }} (value: {{ $value }})."

需要注意的是，上述示例中的 promql 表达式只是简单的示例，具体的阈值和表达式应该根据实际情况进行调整。另外，需要将上述 yaml 配置文件保存为一个文件，比如 node-exporter-rules.yaml，并将该文件加入到 Prometheus 的配置文件中以启用这些报警规则。