docker logs

Practice docker logs from memory. Docker captures everything written to stdout/stderr. Use --follow (-f) for live streaming, --tail N for last N lines, --

Show the log output (stdout/stderr) of the nginx1 container.

docker logs nginx1

Docker captures everything written to stdout/stderr. Use --follow (-f) for live streaming, --tail N for last N lines, --since for time-based filtering.

Safety: Inspect state before stopping, pruning, or changing running containers.

Show the last 50 lines of the nginx1 container logs.

docker logs --tail 50 nginx1

--tail 50 limits output to the last 50 lines. Combine with -f to follow tailing output, or --since 5m for time-windowed logs.

Safety: Inspect state before stopping, pruning, or changing running containers.

Follow the log output of nginx1 in real time.

docker logs -f nginx1

-f tails like tail -f, streaming new log lines as they're written. Ctrl-C to stop. Add --tail 50 to also show recent backlog.

Safety: Inspect state before stopping, pruning, or changing running containers.

Build the habit: DockerDrill drills docker logs and the rest of the Docker workflow until the safe first move is automatic. Try a Docker drill.