problem with reading data from iot-device by prometheus-endpoint

[auge02-git]

What did you do?

I'm write a prometheus-endpoint on IoT device and prometheus throw a error to read data's from endpoint by is ending of \r and i'm found nothing options to replace or regex this on reading data from endpoint.

The original data is:

iot_sensor{date="8:54:15",sensor=0} 25.88
iot_sensor{date="8:54:15",sensor=1} 21.00


Bug-Report on Prometheus:

Endpoint	State	Labels	Last Scrape	Scrape Duration	Error
http://10.x.y.z:80/metrics/	DOWN	data_read="IoT of microcontroller"instance="10.x.y.z:80"job="iot-sensor"job_type="iot_sensor"	1m 3s ago	13.773s	strconv.ParseFloat: parsing "25.88\r": invalid syntax

What did you expect to see?

The syntax on sensor-outputs "ok" on prometheus-endpoint. I hop to ignore line ending types and read data's, but coding on a C-dialect and using default print-function to output data's.

What did you see instead? Under which circumstances?

Enable ignore line-endings or replace option to allowed inputs.

System information

No response

Prometheus version

No response

Prometheus configuration file

global:
  scrape_interval:     15s # By default, scrape targets every 15 seconds.
  evaluation_interval: 15s # By default, scrape targets every 15 seconds.
  external_labels:
      monitor: 'my-project'

rule_files:
  - 'alert.rules'
  # - "first.rules"
  # - "second.rules"

# alert
alerting:
  alertmanagers:
  - scheme: http
    static_configs:
    - targets:
      - "alertmanager:9093"

# A scrape configuration containing exactly one endpoint to scrape:
# Here it's Prometheus itself.
scrape_configs:
  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.

  - job_name: 'prometheus'
    scrape_interval: 5s

    static_configs:
         - targets: ['localhost:9090']

  - job_name: 'cadvisor'
    scrape_interval: 5s
    dns_sd_configs:
    - names:
      - 'tasks.cadvisor'
      type: 'A'
      port: 8080

  - job_name: 'node-exporter'
    scrape_interval: 5s

    dns_sd_configs:
    - names:
      - 'tasks.node-exporter'
      type: 'A'
      port: 9100
    
  - job_name: 'iot-sensor'
    scrape_interval: 15s

    dns_sd_configs:
    - names:
      - 'tasks.iot-exporter'
      type: 'A'
      port: 29001

Alertmanager version

ALERTMANAGER_IMAGE_VERSION=latest

alertmanager:
    image: prom/alertmanager:${ALERTMANAGER_IMAGE_VERSION:-latest}

Version Information
Branch: HEAD
BuildDate: 20240228-11:51:20
BuildUser: root@22cd11f671e9
GoVersion: go1.21.7
Revision: 0aa3c2aad14cff039931923ab16b26b7481783b5
Version: 0.27.0

Alertmanager configuration file

No response

Logs

No response