The log level and format can be adjusted by configuration flags.
Please note that the structured log format is not stable yet; field names and formatting of values might change in minor releases.
If Docker was launched with our quick local setup with Docker Compose, the following command can be used to fetch the logs.
docker compose logs ferretdb
Otherwise, you can check a list of running Docker containers with
and get logs with
$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
13db4c8800d3 postgres "docker-entrypoint.s…" About a minute ago Up 59 seconds 5432/tcp my-postgres
44fe6f4c3527 ghcr.io/ferretdb/ferretdb "/ferretdb" About a minute ago Up 59 seconds 8080/tcp, 27018/tcp, 0.0.0.0:27017->27017/tcp my-ferretdb
$ docker logs my-ferretdb
Binary executable logs
FerretDB writes logs to the standard error (
FerretDB exposes metrics in Prometheus format on the debug handler on
http://127.0.0.1:8088/debug/metrics by default.
There is no need to use an external exporter.
The host and port can be changed with
Please note that the set of metrics is not stable yet; metric and label names and formatting of values might change in minor releases.