black box exporter post api issue for content type application./json

[Suresh Mallampati]

Hi ,

      I am using the below yaml files for testing the post api using black box exorter.

expected result is  

probe_http_status_code value 200 the same thing checked using postman.

but i am getting probe_http_status_code value 415

blackbox. yml

http_post_2xx:

    prober: http

    http:

      method: POST

      headers:

        Content-Type: application/json;

      body: '{aaaa: "355987085036738",status: "Active"}

prometheus.yml

       - job_name: 'checkpost'

    scrape_interval: 45s

    metrics_path: /probe

    params:

      module: [http_post_2xx]  # Look for a HTTP 200 response.

    static_configs:

      - targets:

        - http://xxx.yyy/create

    relabel_configs:

      - source_labels: [__address__]

        target_label: __param_target

      - source_labels: [__param_target]

        target_label: instance

      - target_label: __address__

        replacement: 127.0.0.1:9115  # Blackbox exporter.

[Brian Candler]

https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/415

Perhaps it doesn't like your Content-Type with trailing semicolon?  Also, the body you've given is not valid JSON:

body: '{aaaa: "355987085036738",status: "Active"}

--->

body: '{"aaaa": "355987085036738","status": "Active"}'

I'd suggest the easiest way to debug this is to use "curl" interactively until you can find a series of options that works, and then you can translate that into blackbox_exporter configuration.

Another thing you can do is to use tcpdump to capture the response from the remote webserver when blackbox_exporter scrapes it.  It may include text in the response body which explains the problem with the request.  Something like this (adjust the interface name as necessary):

tcpdump -i eth0 -nn -s0 -A host xxx.yyy and tcp port 80

[Suresh Mallampati]

Thank you very much .

After doing the  corrections also i am facing the same issue . If there is any sample or document could helpful for me.

[Suresh Mallampati]

If any one can help using the api  http://dummy.restapiexample.com/create sample prometheus.yml,blackbox.yml files for http post

[Suresh Mallampati]

yes the example is working . I need to check with the api provider

http_post_2xx:

    prober: http

    http:

      method: POST

      headers:

        Content-Type: application/json

      body: '{"name":"test","salary":"123","age":"23"}'

    scrape_interval: 45s

    metrics_path: /probe

    params:

      module: [http_post_2xx]  # Look for a HTTP 200 response.

    static_configs:

      - targets:

        - http://dummy.restapiexample.com/api/v1/create

    relabel_configs:

      - source_labels: [__address__]

        target_label: __param_target

      - source_labels: [__param_target]

        target_label: instance

      - target_label: __address__

        replacement: 127.0.0.1:9115  # Blackbox exporter.

thank you for the help