Accessing prometheus metrics for opnsense plugin | CrowdSec | Page 1

coral fable Oct 23, 2025, 3:30 PM

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I am running OPNsense 25.7.6-amd64 on FreeBSD 14.3-RELEASE-p4 with OpenSSL 3.0.18 and have installed the os-crowdsec 1.0.12 plug in. I have registered the security engine and enabled acquisition of caddy logs and certain selected loki logs. Notifications for telegram have been configured and tested.

I have amended /usr/local/etc/crowdsec/config.yaml as follows and restarted the crowdsec service:

prometheus:
  enabled: true
  level: full
  listen_addr: 0.0.0.0
  listen_port: 6060

When I access my opnsense router at either http://192.168.1.1:6060/metrics or https://192.168.1.1:6060/metrics I receive a timeout error.

What should the address be to expose crowdsec metrics for prometheus with the os-crowdsec plugin?

fierce ermineBOT Oct 23, 2025, 3:30 PM

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coral fable Oct 23, 2025, 3:36 PM

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I searched on the discourse forums and in the discord. I reviewed the log files for any references. I followed the opnsense guide at https://docs.crowdsec.net/docs/getting_started/install_crowdsec_opnsense/.

OPNsense | CrowdSec

The CrowdSec plugin for OPNsense is installed from the official repositories.

rugged basin Oct 23, 2025, 7:03 PM

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@coral fable you made sure to allow the port on your opnsense firewall to internal traffic?

coral fable Oct 23, 2025, 8:01 PM

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That's an interesting idea. 192.168.1.1 should be on the LAN, but I'll add a floating rule for port 6060 and see what happens

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Added a floating rule and applied it, waited, then tried again. Connection still timed out.

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I had previously done a sudo service crowdsec reload so this time I also did a service restart from the GUI and metrics are now being served on http://192.168.1.1:6060/metrics

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I am going to remove the floating rule and restart the service to confirm if it was the rule, the gui restart, or both

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Testing:

Removed the floating rule and applied change to firewall - metrics served
Restarted crowdsec service via gui - metrics served

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I'll write this up on the forum

#Accessing prometheus metrics for opnsense plugin