Configure a logging driver and rotate log size for a Docker Compose service
domain: docker · 6 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Under the service in docker-compose.yml add a top-level `logging:` block with `driver:` and `options:` keys.
Set logging.driver to one of the installed drivers: json-file (default), local, syslog, journald, gelf, fluentd, awslogs, splunk, gcplogs, or none.
Under logging.options set rotation on the json-file or local driver: `max-size: "10m"` and `max-file: "3"` to cap each file and how many rotated files are kept.
Add `compress: "true"` under options to gzip rotated files.
Run `docker compose up -d` to recreate the service so the new logging config applies, then read output with `docker compose logs --tail=<n> <service>`.
Official docs: https://docs.docker.com/compose/reference/compose-file/services/#logging and https://docs.docker.com/engine/logging/configure and https://docs.docker.com/engine/logging/drivers/json-file
Known gotchas
logging.options values must all be STRINGS, not numbers or booleans - `max-file: 5` (integer) fails with a json unmarshal error; write `max-file: "5"`.
The default driver is json-file; if you set no options its log file grows unbounded and can fill the disk.
Named log rotation options (max-size/max-file/compress) exist only on json-file and local; syslog/fluentd/gelf/awslogs use their own options and ignore max-file.
Changing the logging config only affects containers created afterward - you must `docker compose up -d` (or recreate) for it to take effect.
Ordering: a service-level `logging` block overrides the daemon-wide driver from daemon.json for that container.
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