Docker进阶之四:centos7安装docker

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centos7.6 安装docker

参考：https://docs.docker.com/install/linux/docker-ce/centos/

一.存在老版本先删除

yum remove docker \ docker-client \ docker-client-latest \ docker-common \ docker-latest \ docker-latest-logrotate \ docker-logrotate \ docker-engine

二.（安装依赖）Install required packages. yum-utils provides the yum-config-manager utility, and device-mapper-persistent-data and lvm2 are required by the devicemapper storage driver.

$ yum install -y yum-utils \ device-mapper-persistent-data \ lvm2

三.(配置官方源)Use the following command to set up the stable repository.

$ yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo

四.更新yum包索引 yum makecache fast 五.安装Docker CE yum install docker-ce -y 六.启动 systemctl start docker 七.卸载 yum -y remove docker-ce rm -rf /var/lib/docker 八.安装结果验证 docker info

官方测试:sudo docker run hello-world

配置文件： /etc/sysconfig/docker

存储位置： /var/lib/docker

九. 配置Docker加速器

curl -sSL https://get.daocloud.io/daotools/set_mirror.sh | sh -s http://f1361db2.m.daocloud.io

sudo systemctl restart docker

十. 备注：错误汇总

1.配置官方源报错

$ sudo yum-config-manager \ --add-repo \ https://download.docker.com/linux/centos/docker-ce.repo

错误信息如下：

Timeout on https://download.docker.com/linux/centos/docker-ce.repo: (28, 'Operation timed out after 30034 milliseconds with 0 out of 0 bytes received')

错误原因：由于国内访问不到docker官方镜像的缘故

解决方法：修改国内阿里云地址即可

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

2.内核版本过低报错

docker: Error response from daemon: OCI runtime create failed: container_linux.go:344: starting container process caused "process_linux.go:293: copying bootstrap data to pipe caused \"write init-p: broken pipe\"": unknown.

参考升级内核：https://blog.csdn.net/kikajack/article/details/79396793

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