使用 Blackbox Exporter 测试网络连通性

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wget https://github.com/prometheus/blackbox_exporter/releases/download/v0.21.0/blackbox_exporter-0.21.0.linux-amd64.tar.gz
tar -xzvf blackbox_exporter-0.21.0.linux-amd64.tar.gz
mv blackbox_exporter-0.21.0.linux-amd64/blackbox_exporter /usr/bin/
mkdir /etc/prometheus
mv blackbox_exporter-0.21.0.linux-amd64/blackbox.yml /etc/prometheus/

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rm -rf blackbox_exporter-0.21.0.linux-amd64*

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vim /usr/lib/systemd/system/blackbox_exporter.service

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# HELP probe_dns_lookup_time_seconds Returns the time taken for probe dns lookup in seconds
1. TYPE probe_dns_lookup_time_seconds gauge
probe_dns_lookup_time_seconds 0.030818323
1. HELP probe_duration_seconds Returns how long the probe took to complete in seconds
1. TYPE probe_duration_seconds gauge
probe_duration_seconds 0.353982702
1. HELP probe_failed_due_to_regex Indicates if probe failed due to regex
1. TYPE probe_failed_due_to_regex gauge
probe_failed_due_to_regex 0
1. HELP probe_http_content_length Length of http content response
1. TYPE probe_http_content_length gauge
probe_http_content_length -1
1. HELP probe_http_duration_seconds Duration of http request by phase, summed over all redirects
1. TYPE probe_http_duration_seconds gauge
probe_http_duration_seconds{phase="connect"} 0.08580119300000001
probe_http_duration_seconds{phase="processing"} 0.201979714
probe_http_duration_seconds{phase="resolve"} 0.060847821999999996
probe_http_duration_seconds{phase="tls"} 0
probe_http_duration_seconds{phase="transfer"} 0.003931112
1. HELP probe_http_redirects The number of redirects
1. TYPE probe_http_redirects gauge
probe_http_redirects 3
1. HELP probe_http_ssl Indicates if SSL was used for the final redirect
1. TYPE probe_http_ssl gauge
probe_http_ssl 0
1. HELP probe_http_status_code Response HTTP status code
1. TYPE probe_http_status_code gauge
probe_http_status_code 200
1. HELP probe_http_uncompressed_body_length Length of uncompressed response body
1. TYPE probe_http_uncompressed_body_length gauge
probe_http_uncompressed_body_length 13645
1. HELP probe_http_version Returns the version of HTTP of the probe response
1. TYPE probe_http_version gauge
probe_http_version 1.1
1. HELP probe_ip_addr_hash Specifies the hash of IP address. It's useful to detect if the IP address changes.
1. TYPE probe_ip_addr_hash gauge
probe_ip_addr_hash 4.032438981e+09
1. HELP probe_ip_protocol Specifies whether probe ip protocol is IP4 or IP6
1. TYPE probe_ip_protocol gauge
probe_ip_protocol 4
1. HELP probe_success Displays whether or not the probe was a success
1. TYPE probe_success gauge
probe_success 1

    scrape_configs:
    - job_name: 'blackbox_http'
      metrics_path: /probe
      params:
        module: [http_2xx]
      static_configs:
      - targets: ['github.com']
        labels:
          url: 'github.com'
      - targets: ['dl-cdn.alpinelinux.org']
        labels:
          url: 'dl-cdn.alpinelinux.org'
      relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - target_label: __address__
        replacement: BLACKBOX_HOST_IP:9115
    - job_name: 'blackbox_icmp'
      metrics_path: /probe
      params:
        module: [icmp]
      static_configs:
      - targets: ['github.com']
        labels:
          url: 'github.com'
      - targets: ['dl-cdn.alpinelinux.org']
        labels:
          url: 'dl-cdn.alpinelinux.org'
      relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - target_label: __address__
        replacement: BLACKBOX_HOST_IP:9115

modules:
  http_2xx:
    prober: http
    http:
      preferred_ip_protocol: "ipv4"

systemctl restart blackbox_exporter

grafana-cli plugins install grafana-piechart-panel

systemctl restart grafana-server