Docker 官网地址：https://docs.docker.com/engine/install/centos/
安装前准备
-
查看系统版本
cat /etc/redhat-release -
安装
gcc和gcc-c++yum -y install gcc yum -y install gcc-c++
卸载旧版本
yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-engine
安装必要插件
yum install -y yum-utils
# 设置 stable 镜像仓库
yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
# 更新 yum 软件包索引
yum makecache fast
安装 Docker CE
yum -y install docker-ce docker-ce-cli containerd.io
启动 docker
systemctl start docker
测试启动
docker version
运行 hello world
docker run hello-world
显示以下信息：
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
0e03bdcc26d7: Pull complete
Digest: sha256:8e3114318a995a1ee497790535e7b88365222a21771ae7e53687ad76563e8e76
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/
配置镜像加速
mkdir -p /etc/docker
vim /etc/docker/daemon.json
里面配置,使用自己的加速器。去阿里到生成
{
"registry-mirrors":["https://XXXXX.mirror.aliyuncs.com"]
}
# 重新加载配置文件
systemctl daemon-reload
# 重启docker
systemctl restart docker
#检查启动
ps -ef|grep docker|grep -v grep
卸载docker
# 停止docker
systemctl stop docker
# 卸载
yum remove docker-ce docker-ce-cli containerd.io
# 删除配置文件
rm -rf /var/lib/docker
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