Docker在Centos7下的安裝步驟

參照菜鳥教程

• 首先檢查一下核心版本是否是3.1及以上

[[email protected] ~]# uname -r
3.10.0-693.21.1.el7.x86_64

• 安裝一些必要的系統工具：

sudo yum install -y yum-utils device-mapper-persistent-data lvm2

• 新增軟體源資訊(這裡使用的是阿里雲的映象)：

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

• 更新 yum 快取：

sudo yum makecache fast

• 安裝 Docker-ce：

sudo yum -y install docker-ce

• 啟動 Docker 後臺服務

sudo systemctl start docker

• 測試執行 hello-world

docker run hello-world

執行結果如下

Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
d1725b59e92d: Pull complete 
Digest: sha256:0add3ace90ecb4adbf7777e9aacf18357296e799f81cabc9fde470971e499788
Status: Downloaded newer image 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" image from the Docker Hub.
    (
 
amd64)
 3. The Docker daemon created a new container from that image 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 images, automate workflows, and more with a free Docker ID:
 https://hub.docker.com/

For more examples and ideas, visit:
 https://docs.docker.com/get-started/

表示安裝成功