安装和启动docker

Posted 2020-12-01 sunliyuan

1、安装和启动docker

yum update -y

yum install -y yum-utils

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

yum -y install docker-ce

systemctl start docker

2、设置镜像

vi /etc/docker/daemon.json

{
"registry-mirrors": ["https://aj2rgad5.mirror.aliyuncs.com"]
}

3、开放管理端口映射

vi /lib/systemd/system/docker.service

将第11行的ExecStart=/usr/bin/dockerd，替换为：

ExecStart=/usr/bin/dockerd -H tcp://0.0.0.0:2375 -H unix:///var/run/docker.sock -H tcp://0.0.0.0:7654

2375是管理端口，7654是备用端口

在~/.bashrc中写入docker管理端口

export DOCKER_HOST=tcp://0.0.0.0:2375

source ~/.bashrc

4、重启docker

systemctl daemon-reload && service docker restart

5、测试docker是否正常安装和运行

docker run hello-world

Hello from Docker!
This message shows that your installation appears to be working correctly.