Example Blackbox config for POST call monitoring

blackbox.yaml

modules:

  http_2xx:
    prober: http
    timeout: 5s
    http:
      valid_http_versions: ["HTTP/1.1", "HTTP/2.0"]
      valid_status_codes: []
      method: GET
      preferred_ip_protocol: "ip4"
      ip_protocol_fallback: false

  post_one_2xx:
    prober: http
    timeout: 5s
    http:
      valid_http_versions: ["HTTP/1.1", "HTTP/2.0"]
      valid_status_codes: []
      method: POST
      headers: 
        content-type: application/json
      body: '{"data": "one"}'
      preferred_ip_protocol: "ip4"
      ip_protocol_fallback: false
      fail_if_body_not_matches_regexp: [".*one.*"]

  post_two_2xx:
    prober: http
    timeout: 5s
    http:
      valid_http_versions: ["HTTP/1.1", "HTTP/2.0"]
      valid_status_codes: []
      method: POST
      headers: 
        content-type: application/json
      body: '{"data": "two"}'
      preferred_ip_protocol: "ip4"
      ip_protocol_fallback: false
      fail_if_body_not_matches_regexp: [".*two.*"]

prometheus.yaml

global:
  scrape_interval: 1m

scrape_configs:
  - job_name: blackbox
    metrics_path: /metrics
    static_configs:
    - targets:
      - host.docker.internal:9115
  - job_name: blackbox-http
    metrics_path: /probe
    scrape_interval: 5m
    params:
      module: [http_2xx]
    static_configs:
      - targets:
        - https://httpbin.org
    relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_target]
        target_label: instance
      - target_label: __address__
        replacement: host.docker.internal:9115
  - job_name: blackbox-http-post-one
    metrics_path: /probe
    scrape_interval: 5m
    params:
      module: [post_one_2xx]
    static_configs:
      - targets:
        - https://httpbin.org/post
    relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_target]
        target_label: instance
      - target_label: __address__
        replacement: host.docker.internal:9115
  - job_name: blackbox-http-post-two
    metrics_path: /probe
    scrape_interval: 5m
    params:
      module: [post_two_2xx]
    static_configs:
      - targets:
        - https://httpbin.org/post
    relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_target]
        target_label: instance
      - target_label: __address__
        replacement: host.docker.internal:9115