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Log Rotation Size Limit Configuration

Company: DeliveryHero | Difficulty: Easy

Scenario

A container image myapp:logapp continuously writes logs to stdout. Without log rotation configured, Docker's log files grow unbounded, consuming disk space and potentially filling up the filesystem.

Task

Run a container from the myapp:logapp image with the name myapp_container, enable Docker's built-in log rotation, configure the maximum size for individual log files to 10MB, retain maximum up to 3 log files during rotation, and verify the container is running successfully.

Example

Multiple rotated log files, each ≤10MB
/var/lib/docker/containers/<id>/<id>-json.log: 8.5MB
/var/lib/docker/containers/<id>/<id>-json.log.1: 10MB
/var/lib/docker/containers/<id>/<id>-json.log.2: 10MB
...
Docker automatically rotates logs at 10MB threshold

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