Detailed explanation of CentOS7 online installation of Docker 17.03.2 using Alibaba Cloud Docker Yum source

Reference Documentation

Official Docker installation documentation: https://docs.docker.com/install/linux/docker-ce/centos

Alibaba Cloud Docker installation document: https://yq.aliyun.com/articles/110806

Install Docker with one click

https://github.com/cookcodeblog/OneDayDevOps/blob/master/components/docker/install_docker_ce.sh

Installation Steps

Removing an installed Docker

# Uninstall installed docker
sudo yum remove docker \
         docker-client \
         docker-client-latest \
         docker-common \
         docker-latest \
         docker-latest-logrotate \
         docker-logrotate \
         docker-selinux \
         docker-engine-selinux \
         docker-engine

Configure Alibaba Cloud Docker Yum source

# Set up repository
sudo yum install -y yum-utils device-mapper-persistent-data lvm2

# Use Aliyun Docker
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo

Install the specified version

Check the Docker version:

yum list docker-ce --showduplicates

When installing an older version (such as Docker 17.03.2), you need to specify the full rpm package name and add the --setopt=obsoletes=0 parameter:

# Install docker
# on a new system with yum repo defined, forcing older version and ignoring obsoletes introduced by 17.06.0
yum install -y --setopt=obsoletes=0 \
  docker-ce-17.03.2.ce-1.el7.centos.x86_64 \
  docker-ce-selinux-17.03.2.ce-1.el7.centos.noarch

Or when installing a newer version of Docker (such as Docker 18.03.0), add the version number part of the rpm package name:

sudo yum install docker-ce-18.03.0.ce

Or install the latest version of Docker without adding the version number:

sudo yum install docker-ce

Start the Docker service

# Start docker service
systemctl enable docker
systemctl start docker

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