Service Logs

• Same as docker container logs, but aggregates all service tasks
• Can return all tasks at once, or just one task's logs
• Great for real time cli troubleshooting
• Has options for follow/tail, and other common log options
• Not for log storage, or searching, or feeding into other systems
• Doesn't work if you use --log-driver for sending logs off server
• Therefore: use for small Swarms and testing

Examples

• Return all logs for a service
  • docker service logs <servicename/id>
• Return all logs for a single task
  • docker service logs <taskid>
• Return unformatted logs with no trunking
  • docker service logs --raw --no-trunc <servicename/id>
• Only return last 50 log entries and all future logs
  • docker service logs --tail 50 --follow <servicename/id>
• Search in logs (both stdout and stderr)
  • docker service logs <servicename> 2>&1 | grep <search string>
  • docker service logs <servicename> 2>&1 | findstr <search string>