How can I set up log rotation for my Docker containers using Docker Compose?

How can I set up log rotation for my Docker containers using Docker Compose?

You can set up log rotation in Docker Compose by configuring the logging options in your docker-compose.yml file. You can specify options like max-size and max-file under the logging configuration.

Can you show me an example of how to configure that in the YAML file?

Sure! Here’s an example:

version: '3'
services:
  app:
    image: your-image
    logging:
      driver: "json-file"
      options:
        max-size: "10m"
        max-file: "3"

What do the max-size and max-file options do?

max-size limits the size of each log file, while max-file specifies the maximum number of log files to keep. This helps manage disk space.

Is there a way to check the current log size for my containers?

Yes, you can check the log size by accessing the log files directly in the Docker host. They are usually located in /var/lib/docker/containers/<container-id>/.