# How to Monitor Open Connections Per Service in Traefik 3 Using Prometheus?

**URL:** <https://community.traefik.io/t/how-to-monitor-open-connections-per-service-in-traefik-3-using-prometheus/24789>\
**Category:** Traefik v3 (latest)\
**Tags:** kubernetes-ingress, docker, metrics\
**Created:** [October 15, 2024, 12:46pm UTC](https://community.traefik.io/t/how-to-monitor-open-connections-per-service-in-traefik-3-using-prometheus/24789 "2024-10-15T12:46:56Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![oli](https://avatars.discourse-cdn.com/v4/letter/o/2bfe46/32.png) [@oli](https://community.traefik.io/u/oli)\
**Post date:** [October 15, 2024, 12:46pm UTC](https://community.traefik.io/t/how-to-monitor-open-connections-per-service-in-traefik-3-using-prometheus/24789/1 "2024-10-15T12:46:56Z")

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Hello everyone!

I'm using Traefik 3 and manage several URLs, such as [www.joao.com](http://www.joao.com), [www.pedro.com](http://www.pedro.com), and [www.mike.com](http://www.mike.com), with each having its own service configured in Traefik.

I would like to know how I can monitor the number of open connections for each of these domains. I have already set up Prometheus to collect metrics, but I haven't found a metric that filters directly by service. The only metric I’ve found is **`traefik_open_connections`** , but it doesn’t seem to filter by service.

My goal is to find out how many connections are actively open for each service, which is tied to a specific URL, such as [www.joao.com](http://www.joao.com).

My configuration is similar to this

HTTP Router: [www.joao.com](http://www.joao.com) ( web, websecure) \> HTTP Service: appjoao  
HTTP Router: [www.mike.com](http://www.mike.com) ( web, websecure) \> HTTP Service: appmike  
HTTP Router: [www.pedro.com](http://www.pedro.com) ( web, websecure) \> HTTP Service: apppedro

From what I checked, it seems that this metric existed in Traefik 2( **traefik\_service\_open\_connections** ) and it was possible to do this through the service but it does not exist in Traefik 3

Any suggestions on how to achieve this?

Thanks in advance!

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<div class="post-metadata">

**Author:** ![gtabary](https://sea2.discourse-cdn.com/flex020/user_avatar/community.traefik.io/gtabary/32/10518_2.png) [@gtabary](https://community.traefik.io/u/gtabary)\
**Post date:** [July 7, 2025, 4:00pm UTC](https://community.traefik.io/t/how-to-monitor-open-connections-per-service-in-traefik-3-using-prometheus/24789/2 "2025-07-07T16:00:04Z")

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Hi. Also wanted. 😄 .