1. Docker requires that the kernel version of the CentOS system is higher than 3.10
Check your current kernel version through the uname -r command
$ uname -r
2. Log in to Centos with root privileges. Make sure the yum package is updated to the latest.
$ sudo yum update
3. Uninstall the old version (if you have installed an old version)
$ sudo yum remove docker docker-common docker-selinux docker-engine
4. Install the required software packages, yum-util provides the yum-config-manager function, and the other two are The devicemapper driver depends on
$ sudo yum install -y yum-utils device-mapper-persistent-data lvm2
5. Set up the yum source
$ sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
6. You can view all docker versions in all warehouses and select a specific version to install
$ yum list docker-ce --showduplicates | sort -r
7. Install docker
$ sudo yum install docker-ce #由于repo中默认只开启stable仓库,故这里安装的是最新稳定版17.12.0 $ sudo yum install <FQPN> # 例如:sudo yum install docker-ce-17.12.0.ce
8. Start and join the boot startup
$ sudo systemctl start docker $ sudo systemctl enable docker
9. Verify whether the installation is successful (the client and service parts indicate that the docker installation and startup are successful)
$ docker version
Recommended related tutorials: centos tutorial
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