docker 在centos上安装
1.检查当前的centos系统的内核版本；
[root@docker ~]# uname -r 3.10.0-327.18.2.el7.x86_64
2.用yum进行安装，要先更新下yum源；
[root@docker ~]# yum update -y
3.添加yum源；
[root@docker ~]# cd /etc/yum.repos.d/ [root@docker yum.repos.d]# pwd /etc/yum.repos.d [root@docker yum.repos.d]# 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 [dockerrepo] name=Docker Repository baseurl=https://yum.dockerproject.org/repo/main/centos/7/ enabled=1 gpgcheck=1 gpgkey=[root@docker yum.repos.d]# cd
4.安装docker软件包
[root@docker ~]# yum install docker-engine -y
5.启动docker服务
[root@docker ~]# systemctl enable docker.service
[root@docker ~]# systemctl start docker
6.通过在docker容器中运行测试镜像来验证docker是否安装成功
[root@docker ~]# docker run --rm hello-world Unable to find p_w_picpath 'hello-world:latest' locally latest: Pulling from library/hello-world c04b14da8d14: Pull complete Digest: sha256:0256e8a36e2070f7bf2d0b0763dbabdd67798512411de4cdcf9431a1feb60fd9 Status: Downloaded newer p_w_picpath for hello-world:latest Hello from Docker! This message shows that your installation appears to be working correctly. To generate this message, Docker took the following steps: 1. The Docker client contacted the Docker daemon. 2. The Docker daemon pulled the "hello-world" p_w_picpath from the Docker Hub. 3. The Docker daemon created a new container from that p_w_picpath which runs the executable that produces the output you are currently reading. 4. The Docker daemon streamed that output to the Docker client, which sent it to your terminal. To try something more ambitious, you can run an Ubuntu container with: $ docker run -it ubuntu bash Share p_w_picpaths, automate workflows, and more with a free Docker Hub account: https://hub.docker.com For more examples and ideas, visit: https://docs.docker.com/engine/userguide/
表明安装成功
