Hi,

I'm currently on my internship and need to work with prometheus + grafana. 
I've installed Prometheus on a Linux Ubuntu 22.04.5 LTS server. 
After configuring prometheus and node exporter correctly, i unfortunately 
get a error when configuring snmp exporter. 

Error:  Error scraping target: server returned HTTP status 400 Bad Request

And when i click on the ip of the server i receive: Unknown auth 
"public_v1_''

I have two prometheus.yml files:
/home/rpbgintern2/prometheus.yml
/etc/prometheus/prometheus.yml

And two snmp.yml files:
/home/rpbgintern2/snmp_exporter-0.26.0.linux-amd64/snmp.yml
/home/rpbgintern2/snmp/snmp.yml

I don't know if multiple yml files are causing this error. 


/etc/prometheus/prometheus.yml:
global:
  scrape_interval: 15s
  evaluation_interval: 15s
  # scrape_timeout is set to the global default (10s).

alerting:
  alertmanagers:
    - static_configs:
        - targets:
          # - alertmanager:9093

rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"

scrape_configs:
  - job_name: 'node_exporter'
    static_configs:
      - targets: ['172.27.136.2:9100']

  - job_name: "prometheus"
    static_configs:
      - targets: ["172.27.136.2:9090"]
        labels:
          app: "prometheus"

  - job_name: 'snmp_exporter'
    metrics_path: /snmp
    params:
      auth: [public_v1]
      module: [if_mib]
    static_configs:
      - targets:
          - 200.1.212.158  # SNMP device.
    relabel_configs:
      - source_labels: [__address__]
        target_label: __param_target
      - source_labels: [__param_target]
        target_label: instance
      - target_label: __address__
        replacement: 172.27.136.2:9116  # SNMP exporter's host:port

Please help! i've been troubleshooting this for the past 3 weeks 

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