Reduce Treafik and CrowdSec logging
I set up Traefik and the CrowdSec plugin for Traefik on my Docker server. If your set up is similar, and you would like to reduce the amount of logging to STDOUT, STDERR and the log file for Traefik, this guide may be helfpul.
Reducing Traefik logs
My Docker Compose file had the log level set to DEBUG. This results in a lot of logs being written to your configured log.filePath when the Traefik hosts are being accessed.
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2025-01-02T17:26:57-08:00 DBG github.com/traefik/traefik/v3/pkg/server/service/loadbalancer/wrr/wrr.go:196 > Service selected by WRR: cd65da17a5fcd4a4
2025-01-02T17:26:58-08:00 DBG github.com/traefik/traefik/v3/pkg/server/service/loadbalancer/wrr/wrr.go:196 > Service selected by WRR: cd65da17a5fcd4a4
2025-01-02T17:27:28-08:00 DBG github.com/traefik/traefik/v3/pkg/server/service/loadbalancer/wrr/wrr.go:196 > Service selected by WRR: cd65da17a5fcd4a4
In your Docker Compose file, reduce the log level to INFO to get rid of these logs. You can also remove the entire line if you would like to fallback to the default level of ERROR.
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- --log.level=INFO # (Default: error)
Reducing CrowdSec logs
For CrowdSec, logs were being written to STDERR every minute with a heartbeat request.
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crowdsec | time="2025-01-06T19:45:23-08:00" level=info msg="127.0.0.1 - [Mon, 06 Jan 2025 19:45:23 PST] \"GET /v1/heartbeat HTTP/1.1 200 21.432928ms \"crowdsec/v1.6.3-4851945a-docker\" \""
crowdsec | time="2025-01-06T19:46:23-08:00" level=info msg="127.0.0.1 - [Mon, 06 Jan 2025 19:46:23 PST] \"GET /v1/heartbeat HTTP/1.1 200 24.638082ms \"crowdsec/v1.6.3-4851945a-docker\" \""
crowdsec | time="2025-01-06T19:47:23-08:00" level=info msg="127.0.0.1 - [Mon, 06 Jan 2025 19:47:23 PST] \"GET /v1/heartbeat HTTP/1.1 200 22.23079ms \"crowdsec/v1.6.3-4851945a-docker\" \""
The log level configuration can be found inside the /etc/crowdsec/config.yaml file within the container. The location on your system will depend on the directory mapping you configured in the Compose file.
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- $DOCKERDIR/crowdsec/etc:/etc/crowdsec
Edit the config.yaml file to change the log_level for the server. The default level is info.
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api:
...
server:
log_level: error