Install docker on centos7

Install docker on centos7

After learning from the Internet, docker is installed under centos7, and the knowledge and steps are organized for backup.

1. Check Dependencies

Docker requires a 64-bit system. The kernel version must be later than 3.10.

[Root @ lilong ~] # Uname-r

3.10.0-693.2.2.el7.x86 _ 64

2. install and use the yum software management tool. You must configure the docker source in advance. The format must be correct and no error will be reported. [Root @ lilong ~] # Cat>/etc/yum. repos. d/docker. repo <-EOF
> [Dockerrepo]
> Name = Docker Repository
> Baseurl = https://yum.dockerproject.org/repo/main/centos/7
> Enabled = 1
> Gpgcheck = 1
> Gpgkey = https://yum.dockerproject.org/gpg
> EOF enters a row and press enter until the last row. Update the software package [root @ lilong ~] # Install [root @ lilong ~] In yum update # Yum install docker-engine start [root @ lilong ~] # Service docker start test [root @ lilong ~] # Add docker run hello-world to auto-start

[Root @ lilong ~] # Chkconfig -- level 35 docker on3. Uninstall The doker package list [root @ lilong ~] # Yum list installed | grep docker
Docker-engine.x86_64 17.05.0.ce-1. el7.centos @ dockerrepo
Docker-engine-selinux.noarch 17.05.0.ce-1. el7.centos @ dockerrepo Delete [root @ lilong ~] # Yum-y remove docker-engine.x86_64 docker-engine-selinux.noarch Note: This command only deletes the docker runtime environment and does not delete images, containers, Volume files, and user-created configuration files. Clear the image and container file [root @ lilong lib] # rm-rf/var/lib/docker