Compose Name Log For Free

What Are Docker Container Logs? Docker container logs are generated by the Docker containers. They need to be collected directly from the containers. Any messages that a container sends to stdout or stderr is logged then passed on to a logging driver that forwards them to a remote destination of your choosing.

Options OptionDescriptionExample valuemax-sizeThe maximum size of the log before it is rolled. A positive integer plus a modifier representing the unit of measure ( k , m , or g ). Defaults to 20m.--log-opt max-size=10m2 more rows

View Logs Generated Before and After a Specific Time Period To filter logs based on time, we can use two flags with the docker-compose logs command: --since and --until . The --since flag is used to view the logs that were generated after a specified time period.

By default, Docker stores log files in a dedicated directory on the host using the json-file log driver. The log file directory is /var/lib/docker/containers/<container_id> on the host where the container is running.

Docker Command for Checking Container Logs Replace container_id with the ID number of the container you want to inspect. To find the container ID, use the docker ps command to list running containers. As in the image below, Docker responds by listing the event logs for that specific container in the output.

The default logging driver in Docker Compose is the json-file driver. This driver stores logs as JSON files on the host machine where the container is running. However, Docker supports several other logging drivers you can configure in your Docker Compose setup.

Docker Command for Checking Container Logs Replace container_id with the ID number of the container you want to inspect. To find the container ID, use the docker ps command to list running containers. As in the image below, Docker responds by listing the event logs for that specific container in the output.