1.2 KiB
Logs
Reading What's Happening {: .subtitle }
By default, logs are written to stdout, in text format.
Configuration Example
??? example "Writing Logs in a File"
```toml
[log]
filePath = "/path/to/traefik.log"
```
??? example "Writing Logs in a File, in JSON"
```toml
[log]
filePath = "/path/to/log-file.log"
format = "json"
```
Configuration Options
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.
format
By default, the logs use a text format (common), but you can also ask for the json format in the format option.
log level
By default, the level is set to error, but you can choose amongst debug, panic, fatal, error, warn, and info.
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.
!!! note This does not work on Windows due to the lack of USR signals.