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| title | description |
|---|---|
| Traefik Logs Documentation | Logs are a key part of observability in Traefik Proxy. Read the technical documentation to learn their configurations, rotations, and time zones. |
Logs
Reading What's Happening {: .subtitle }
By default, logs are written to stdout, in text format.
Configuration
General
Traefik logs concern everything that happens to Traefik itself (startup, configuration, events, shutdown, and so on).
filePath
By default, the logs are written to the standard output.
You can configure a file path instead using the filePath option.
# Writing Logs to a File
log:
filePath: "/path/to/traefik.log"
# Writing Logs to a File
[log]
filePath = "/path/to/traefik.log"
# Writing Logs to a File
--log.filePath=/path/to/traefik.log
format
By default, the logs use a text format (common), but you can also ask for the json format in the format option.
# Writing Logs to a File, in JSON
log:
filePath: "/path/to/log-file.log"
format: json
# Writing Logs to a File, in JSON
[log]
filePath = "/path/to/log-file.log"
format = "json"
# Writing Logs to a File, in JSON
--log.filePath=/path/to/traefik.log
--log.format=json
level
By default, the level is set to ERROR.
Alternative logging levels are DEBUG, INFO, WARN, ERROR, FATAL, and PANIC.
log:
level: DEBUG
[log]
level = "DEBUG"
--log.level=DEBUG
Log Rotation
Traefik will close and reopen its log files, assuming they're configured, on receipt of a USR1 signal.
This allows the logs to be rotated and processed by an external program, such as logrotate.
!!! warning This does not work on Windows due to the lack of USR signals.
{!traefik-for-business-applications.md!}