如何登录Amazon Web Service（AWS）？

Question

I have a project built in Golang and deployed on a Docker instance in AWS.

Internally I create a log file where the program write several logs.

How can I access that log file?

Is there another correct way to logging?

Thanks

Answer 1

Thanks for reply.

After a while looking for the solution to the problem, I found it!

Firstly, I needed to mount the file that is inside the instance in the docker-host.

To do this I add a Json file in the root folder of my project called Dockerrun.aws.json ( http://docs.aws.amazon.com/es_es/elasticbeanstalk/latest/dg/create_deploy_docker_image.html#create_deploy_docker_image_dockerrun )

That is the file that declares the shared folder (volumes) (beetwen docker-host and instance) where I save my log file . This line is equivalent to adding -v flag in the docker run command (https://docs.docker.com/engine/tutorials/dockervolumes/#mount-a-host-directory-as-data-volume). I do this this way because I can not add mount to a running instance and i cant stop it by ssh.

{
  "AWSEBDockerrunVersion": "1",
  "Volumes": [
  {
    "HostDirectory": "/var/log/",
    "ContainerDirectory": "/go/src/app/log"
  }
  ]
}

Then to tell aws that I want to download my log file when I request records. (Tail (last 100 lines), bundle or rotate) I add these files to the .ebextension folder in my project directory. ( http://docs.aws.amazon.com/en_us/elasticbeanstalk/latest/dg/using-features.logging.html#health-logs-extend )

Log_bundle.conf

Files:
"/opt/elasticbeanstalk/tasks/bundlelogs.d/log_bundle.conf":
    Mode: "000755"
    Owner: root
    Group: root
    Content: |
      /var/log/application.log

Log_rotate.config

Files:
"/opt/elasticbeanstalk/tasks/bundlelogs.d/log_rotate.conf":
    Mode: "000755"
    Owner: root
    Group: root
    Content: |
      /var/log/application.log

Log_tail.config

Files:
"/opt/elasticbeanstalk/tasks/publishlogs.d/log_tail.conf":
    Mode: "000755"
    Owner: root
    Group: root
    Content: |
      /var/log/application.log

Finally, I dont try Amazon Could Watch but is the next step.

Regards