I tried installing docker on an EC2 instance


It is said that if you do not know docker, it is dangerous, As a beginner, I'm not sure what docker is and what it's useful for. He bought a reference book, but I'm not sure what it says. For the time being, I wondered if I could understand something if I actually played with it.


I was learning to build a server on AWS, so I installed it on the instance I created at this time Try. If you don't understand it in the middle, you can reset it by terminating the instance. I thought, so I did it like this.

First, log in to your instance

% ssh -i key pair [email protected] name

       __|  __|_  )
       _|  (     /   Amazon Linux 2 AMI


Then install docker

$ sudo amazon-linux-extras install docker

It will stop once, so enter y to proceed and the installation will be completed. Try starting docker.

$ sudo service docker start
Redirecting to /bin/systemctl start docker.service

Set docker authority to ec2-user so that you do not have to add sudo at the time of operation.

$ sudo usermod -a -G docker ec2-user

Log out of the instance once to reflect the settings

$ exit

Log in to your instance again and check

$ systemctl status docker
● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)
   Active: active (running)since gold 2020-10-23 05:16:20 UTC; 5min ago
     Docs: https://docs.docker.com

I wrote active (running) so it seems to work.


I've installed it for the time being, so I'm going to play around with it.

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