Prometheus之blackbox exporter实现端口监控

端口监控配置

prometheus.yml

- job_name: "prot_status"
    metrics_path: /probe
    params:
      module: [tcp_connect]
    file_sd_configs:
    - files:
      - targets/port-status.yaml
      refresh_interval: 2m
    relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_target]
        target_label: ip
      - target_label: __address__
        replacement: 172.16.6.46:9115

port-status.yaml

- targets: 
  - 172.16.10.41:1883
  labels:
    appname: "rel-emqx01"
    env: "测试环境"
    hostname: "rel-web01"
    instance: "172.16.10.41"
- targets: 
  - 172.16.3.114:1883
  labels:
    appname: "prod-emqx01"
    env: "生产环境"
    hostname: "web010"
    instance: "172.16.3.114"

检查文件

# /usr/local/prometheus/promtool check config /usr/local/prometheus/prometheus.yml 
Checking /usr/local/prometheus/prometheus.yml
  SUCCESS: 1 rule files found

Checking /usr/local/prometheus/alert_rules/instance_up.yaml
  SUCCESS: 1 rules found

重启Prometheus服务

# systemctl restart prometheus

Prometheus dashboard

targets

Metrics

blackbox exporter dashboard

Probes

Metrics

Metrics that would have been returned:
# HELP probe_dns_lookup_time_seconds Returns the time taken for probe dns lookup in seconds
# TYPE probe_dns_lookup_time_seconds gauge
probe_dns_lookup_time_seconds 9.688e-06
# HELP probe_duration_seconds Returns how long the probe took to complete in seconds
# TYPE probe_duration_seconds gauge
probe_duration_seconds 0.001560476
# HELP probe_failed_due_to_regex Indicates if probe failed due to regex
# TYPE probe_failed_due_to_regex gauge
probe_failed_due_to_regex 0
# HELP probe_ip_addr_hash Specifies the hash of IP address. It's useful to detect if the IP address changes.
# TYPE probe_ip_addr_hash gauge
probe_ip_addr_hash 2.21480232e+08
# HELP probe_ip_protocol Specifies whether probe ip protocol is IP4 or IP6
# TYPE probe_ip_protocol gauge
probe_ip_protocol 4
# HELP probe_success Displays whether or not the probe was a success
# TYPE probe_success gauge
probe_success 1

告警配置

port_status.yaml

groups:
- name: probe_success
  rules:
  - alert: probe_success
    expr: probe_success == 0
    for: 1m
    labels:
      severity: critical
    annotations:
      summary: "{{ $labels.appname }}"
      description: "{{ $labels.env }} {{ $labels.hostname  }} 服务 {{ $labels.appname }} 端口 无法联通, 请尽快检测"
      value: "{{ $value }}"

prometheus.yml

rule_files:
  - "rules/*.yaml"
  - "alert_rules/*.yaml"

告警信息

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