If you already have a log driver configured, then check your application logs for application issues. Otherwise, use the log configuration options in your task definition to send logs to a custom log driver for the container. For example, you can send the logs to Amazon CloudWatch or use a supported log driver. Note the following information on logs, depending on your task's launch type: For ECS tasks other than Fargate: If you're using the default json-file logging driver with the Amazon Elastic Compute Cloud (Amazon EC2) launch type, run the docker logs yourContainerID command. This command checks the Docker logs of the container on your ECS container instance. For Fargate tasks: Captured logs show the command output that you see in an interactive terminal if you run the container locally, in the STDOUT and STDERR I/O streams. The awslogs log driver passes these logs from Docker to Amazon CloudWatch Logs.