CentOS7 安装docker-engine
1.更新yum
yum update
2.创建repo仓库
tee /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
3.yum安装docker-engine
yum install docker-engine yum install docker-engine-selinux
4.设置Docker服务开机自启
systemctl enable docker.service
5.添加Docker启动时参数
vim /usr/lib/systemd/system/docker.service # ExecStart=/usr/bin/dockerd ExecStart=/usr/bin/dockerd -H tcp://0.0.0.0:2375 -H unix:///var/run/docker.sock -g /opt/docker -s devicemapper --storage-opt dm.fs=xfs --storage-opt dm.use_deferred_removal=true --storage-opt dm.use_deferred_deletion=true --storage-opt dm.basesize=5G
后台启动参数说明:
-H 设置后台模式下指定socket绑定,可以绑定一个或多个
-g 设置Docker运行时根目录
-s 设置容器运行时使用指定的存储驱动
--storage-opt=[] 设置存储驱动的参数
6.启动Docker服务
systemctl start docker
systemctl restart docker
注:如果启动失败,先执行systemctl daemon-reload
7.验证Docker是否安装
docker run --rm hello-world