Installing Docker on CentOS

Jan 21, 2025#折腾 #Linux #运维145

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To install Docker on a Linux system with kernel version 3.10 or higher, first check the kernel version using `uname -r`. Uninstall any old Docker versions with `sudo yum remove docker docker-common docker-selinux docker-engine`. Install necessary dependencies with `sudo yum install -y yum-utils device-mapper-persistent-data lvm2`. Set up the yum repository by choosing either the central repository or the Aliyun repository. Finally, install the latest version of Docker using `sudo yum -y install docker-ce`, and start Docker with `sudo systemctl start docker`, enabling it to start on boot with `sudo systemctl enable docker`.

Linux Kernel: Officially recommended version 3.10 and above.
Check the Linux kernel version:

uname -r

Uninstall old versions:

sudo yum remove docker  docker-common docker-selinux docker-engine

Install dependencies:

sudo yum install -y yum-utils device-mapper-persistent-data lvm2

Set up yum repository (choose one):

# Central repository
sudo yum-config-manager --add-repo http://download.docker.com/linux/centos/docker-ce.repo

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

Install the latest version of Docker:

sudo yum -y install docker-ce

Start Docker and set it to start on boot:

sudo systemctl start docker
sudo systemctl enable docker