3 Docker Installation and Start
3.1 Installation Docker
Docker official recommended to install in Ubuntu, because Docker is based on Ubuntu release, but problems arise general Docker Ubuntu is the first update or patch. In many versions of CentOS is not supported by some of the latest patch update package.
Since we are using the learning environment is CentOS, so here we will Docker installed on CentOS. Note: It is recommended to install at least CentOS7.x version, in CentOS6.x version, you need to install before installing a lot of other environmental and Docker many patches do not support updates.
Please direct mount curriculum supporting Centos7.x mirror
(1) yum update to the latest package
sudo yum update
(2) require installation package, yum-util provide yum-config-manager function, the other two are driven dependent devicemapper
sudo yum install -y yum-utils device-mapper-persistent-data lvm2
(3) Set yum source cloud Ali
sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
(4) mounted docker
sudo yum install docker-ce
(5) After installing the version View docker
docker -v
3.2 Set mirror ustc
ustc is a veteran of linux mirror service provider, and as far in ubuntu 5.04 version when in use. docker Mirror accelerator speed ustc quickly. One of the advantages ustc docker mirror is no need to register, is a real public service.
[https://lug.ustc.edu.cn/wiki/mirrors/help/docker](https://lug.ustc.edu.cn/wiki/mirrors/help/docker)
Edit the file:
we /etc/docker/daemon.json
Enter the following in the file:
{
"registry-mirrors": ["https://docker.mirrors.ustc.edu.cn"]
}
## 2.3 Docker start and stop
** systemctl ** command is a system service manager command
Start docker:
systemctl start docker
Stop docker:
systemctl stop docker
Restart docker:
systemctl restart docker
View docker Status:
systemctl status docker
boot:
systemctl enable docker
View docker summary information
docker info
View docker help documentation
docker --help