How to HTTP POST?

[hafio]

Component(s)

No response

Is your feature request related to a problem? Please describe.

I am trying to integrate with Prometheus Exporter - how can I configure OTEL Collector to perform a HTTP POST instead of GET? I have the credentials configured in the collector and I rather not put them on the URL.

I am currently using:

prometheus/example:
  config:
    scrape_configs:
      - job_name: 'example-metric'
        scrape_interval:  60s
        scrape_timeout:  30s
        metrics_path: "/metrics"
        params:
          'scrapeURI': ['https://example.com']
          'username': ['user']
          'password': ['pass']

Describe the solution you'd like

configure otel to include credentials as headers or http post payload body

Describe alternatives you've considered

none

Additional context

Previous username and password from being leaked

Tip

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[mailo-nr]

To avoid putting credentials in URL params, you could use basic_auth in your scrape config. The Prometheus receiver embeds the full Prometheus scrape config, so standard https://prometheus.io/docs/prometheus/latest/configuration/configuration/#http_config fields should apply:

receivers:
  prometheus/example:
    config:
      scrape_configs:
        - job_name: 'example-metric'
          scrape_interval: 60s
          metrics_path: "/metrics"
          basic_auth:
            username: 'user'
            password_file: /etc/secrets/password  # or inline: password: 'pass'

This sends credentials as an Authorization: Basic ... header instead of URL params as long as the other side will accept it.