标签:CentOS el7 64 world Docker 安装 docker
CentOS 7 安装Docker
1.安装前提
目前,CentOS 仅发行版本中的内核支持 Docker。
Docker 运行在 CentOS 7 上,要求系统为64位、系统内核版本为 3.10 以上
2使用 yum 安装(CentOS 7下)
Docker 要求 CentOS 系统的内核版本高于 3.10 ,查看本页面的前提条件来验证你的CentOS 版本是否支持 Docker 。
通过 uname -r 命令查看你当前的内核版本
[root@cnetos7 local]# uname -r
3.10.0-693.el7.x86_64
3.安装 Docker
Docker 软件包和依赖包已经包含在默认的 CentOS-Extras 软件源里,安装命令如下:
[root@cnetos7 local]# yum -y install docker
安装完成
Dependency Updated:
libsemanage.x86_64 0:2.5-14.el7 libsemanage-python.x86_64 0:2.5-14.el7
policycoreutils.x86_64 0:2.5-34.el7 policycoreutils-python.x86_64 0:2.5-34.el7
python-dmidecode.x86_64 0:3.12.2-4.el7 selinux-policy.noarch 0:3.13.1-268.el7_9.2
selinux-policy-targeted.noarch 0:3.13.1-268.el7_9.2 setools-libs.x86_64 0:3.3.8-4.el7
Complete!
4.启动 Docker 后台服务
[root@cnetos7 local]# systemctl start docker.service
[root@cnetos7 local]# docker ps -a
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
测试运行 hello-world
[root@cnetos7 local]# docker run hello-world
Unable to find image 'hello-world:latest' locally
Trying to pull repository docker.io/library/hello-world ...
latest: Pulling from docker.io/library/hello-world
0e03bdcc26d7: Pull complete
Digest: sha256:31b9c7d48790f0d8c50ab433d9c3b7e17666d6993084c002c2ff1ca09b96391d
Status: Downloaded newer image for docker.io/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/
标签:CentOS,el7,64,world,Docker,安装,docker 来源: https://blog.csdn.net/qq_30486109/article/details/113051590
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