Install Docker from the Default CentOS 7 Repository


After logging into the server, install the latest version of Docker using yum.

$ sudo yum -y install docker

Once installation completes, enable & start the service using systemd.

Create a new group named docker, then add the cloud_user user to the group.

 

# groupadd docker
# usermod -aG docker cloud_user
# systemctl enable –now docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd
/system/docker.service.
[root@ip-10-0-1-121 ~]# docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS
PORTS NAMES

Logout from Root

ssh cloud_user@youripaddress
Enter the password

[cloud_user@ip-10-0-1-121 ~]$ ssh cloud_user@10.0.1.121
The authenticity of host ‘10.0.1.121 (10.0.1.121)’ can’t be established.
ECDSA key fingerprint is SHA256:URC6viTN+8b87rv0V7t9lsCDiq5fwAlguWIYtQSbfCI.
ECDSA key fingerprint is MD5:ac:49:84:5e:c2:53:c7:d1:a2:d8:70:80:61:31:df:60.
Are you sure you want to continue connecting (yes/no)? y
Please type ‘yes’ or ‘no’: yes
Warning: Permanently added ‘10.0.1.121’ (ECDSA) to the list of known hosts.
Password:
[cloud_user@ip-10-0-1-121 ~]$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS
PORTS NAMES

Docker is Installed and available to test

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