Centos cannot start docker solution

centos cannot start docker:

Cause: version problem, uninstall the old version of docker first

Solution 1:

Uninstall the installed docker and reinstall a different version of docker.

yum remove docker
yum remove docker-selinux

You need to configure the yum source repository before installing docker-engine

vi  /etc/yum.repos.d/docker.repo

[dockerrepo]

name=Docker Repository

baseurl=https ://yum.dockerproject.org/repo/main/centos/$releasever/

enabled=1

gpgcheck=1

gpgkey=https://yum. dockerproject.org/gpg

yum install docker-engine

Solution two:

curl -fsSL https://get.docker.com -o get-docker.sh
sudo sh get-docker.sh

Start as a non-root user, you need to add your user to the "docker" group

sudo usermod -aG docker your-user

Normal After the user joins the docker group, he needs to log in again for it to take effect!

Recommended tutorial: centos tutorial

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