1.确定你是CentOS7及以上版本
[root@wangstudy ~]# cat /etc/redhat-release
CentOS Linux release 7.2.1511 (Core)
2. 卸载docker旧版本
yum -y remove docker docker-common docker-selinux docker-engine
# 官网版本
yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-engine
3.安装需要的软件包
yum install -y yum-utils device-mapper-persistent-data lvm2
4.设置stable镜像仓库
#使用国内的
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
5. 更新yum软件包索引
yum makecache fast
6. 安装Docker CE
yum -y install docker-ce docker-ce-cli containerd.io
7. 启动docker
systemctl start docker
使用查看进程命令看 docker进程
8. 测试
查看docker版本
[root@wangstudy ~]# docker version
Client: Docker Engine - Community
Version: 19.03.10
API version: 1.40
Go version: go1.13.10
Git commit: 9424aeaee9
Built: Thu May 28 22:18:06 2020
OS/Arch: linux/amd64
Experimental: false
Server: Docker Engine - Community
Engine:
Version: 19.03.10
API version: 1.40 (minimum version 1.12)
Go version: go1.13.10
Git commit: 9424aeaee9
Built: Thu May 28 22:16:43 2020
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.2.13
GitCommit: 7ad184331fa3e55e52b890ea95e65ba581ae3429
runc:
Version: 1.0.0-rc10
GitCommit: dc9208a3303feef5b3839f4323d9beb36df0a9dd
docker-init:
Version: 0.18.0
GitCommit: fec3683
下载运行hello-world
[root@wangstudy ~]# docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
0e03bdcc26d7: Pull complete
Digest: sha256:6a65f928fb91fcfbc963f7aa6d57c8eeb426ad9a20c7ee045538ef34847f44f1
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/
docker镜像显示
[root@wangstudy ~]# docker images
REPOSITORY TAG IMAGE ID CREATED SIZE
hello-world latest bf756fb1ae65 4 months ago 13.3kB