docker logs

Basic Syntax

Key Options and Parameters

1. -f, --follow: Follow log output.

   docker logs -f mycontainer

2. --since: Show logs since a specific timestamp (e.g., 2023-01-01T00:00:00).

   docker logs --since 2023-01-01T00:00:00 mycontainer

3. -t, --timestamps: Show timestamps.

   docker logs -t mycontainer

4. --tail: Number of lines to show from the end of the logs (default is all).

   docker logs --tail 100 mycontainer

5. --details: Show extra details provided to logs.

   docker logs --details mycontainer

Examples

1. Fetching Logs of a Container

   docker logs mycontainer

   This command retrieves the logs of the container named mycontainer.

2. Following Log Output

   docker logs -f mycontainer

   This command follows the log output of the container named mycontainer.

3. Showing Logs Since a Specific Timestamp

   docker logs --since 2023-01-01T00:00:00 mycontainer

   This command shows the logs of the container named mycontainer since January 1, 2023.

4. Showing Logs with Timestamps

   docker logs -t mycontainer

   This command shows the logs of the container named mycontainer with timestamps.

5. Showing the Last 100 Lines of Logs

   docker logs --tail 100 mycontainer

   This command shows the last 100 lines of logs of the container named mycontainer.

6. Showing Extra Details in Logs

   docker logs --details mycontainer

   This command shows extra details in the logs of the container named mycontainer.

Conclusion

The docker logs command is essential for retrieving and monitoring the logs of a Docker container. Understanding its options and parameters allows you to effectively manage and debug your Docker containers.