Change app log's level at runtime

Traefik Traefik v2
,
1

In docker-compose.yml I have this config for the app log:

command:
  - --log.level=INFO

When I perform some diagnostic work, I have to change that to DEBUG, then restart traefik. That is bad for users, as it drops active/pending connections.

Can I change the log level at runtime, without restarting traefik?

2

Traefik logging is defined in static config (doc), so can currently not be changed on the fly.

If you want to try to change this, open a feature request on Github.

We use a load balancer in front of our Traefik instances, that way we can update one instance after another. Traefik/Docker usually waits 10 seconds for requests „in flight“ to finish.

1 Like
3

Thanks, I've opened a feature request.

If anyone else wants this functionality, please upvote that issue.

(Your workaround is appreciated. In my case though I need something simpler, because I have a very simple infrastructure, with only one traefik instance and no load balancer.)