Docker series (1) deployment installation and uninstallation

Environment: centos

1: Docker requires the kernel version of the CentOS system to be higher than 3.10. Use the  uname -r  command to check whether your current kernel version supports AnAccount docker

uname -r

2. Uninstall the old version (if you have installed the old version)

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

3: View the docker version in the warehouse, and select a specific version to install:

yum list docker-ce --showduplicates | sort -r

4. 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3.20.10.5
sudo yum install <FQPN>  # 例如：sudo yum install docker-ce-****.ce

5. Start and add startup

#启动docker服务
systemctl start docker
#开机启动docker
systemctl enable docker
# 查看docker信息
docker info

Uninstall docker

1. Query the packages installed by docker:

yum list installed | grep docker

2. Delete the installation package: uninstall according to the above name

yum remove docker-ce.x86_64 ddocker-ce-cli.x86_64 -y

3. Delete images/containers, etc.
 

rm -rf /var/lib/docker