软件更新

yum update

卸载旧版本

sudo yum remove docker 
docker-client 
docker-client-latest 
docker-common 
docker-latest 
docker-latest-logrotate 
docker-logrotate 
docker-engine

使用存储库进行安装

设置存储库

安装yum-utils软件包（提供yum-config-manager 实用程序）并设置稳定的存储库。

安装docker基础包

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

设置稳定存储库

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

查看docker版本

yum list docker-ce --showduplicates | sort -r

安装docker引擎

安装containerd.io

dnf install https://mirrors.aliyun.com/docker-ce/linux/centos/8/x86_64/stable/Packages/containerd.io-1.4.4-3.1.el8.x86_64.rpm

安装docker-ce

dnf install https://mirrors.aliyun.com/docker-ce/linux/centos/8/x86_64/stable/Packages/docker-ce-20.10.5-3.el8.x86_64.rpm

安装docker-ce-cli

dnf install https://mirrors.aliyun.com/docker-ce/linux/centos/8/x86_64/stable/Packages/docker-ce-cli-20.10.5-3.el8.x86_64.rpm

启动docker

systemctl start docker

设置docker开机自启

systemctl enable docker

修改docker下载源

sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json <<-'EOF'
{
"registry-mirrors": ["https://xxxxx.mirror.aliyuncs.com"]
}
EOF
sudo systemctl daemon-reload
sudo systemctl restart docker

启动docker服务允许远程访问

编辑服务器上的docker.service文件

vi /usr/lib/systemd/system/docker.service

大约在14行原来的值

ExecStart=/usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock

改为

ExecStart=/usr/bin/dockerd -H fd:// -H tcp://0.0.0.0:2375 -H unix://var/run/docker.sock

保存修改退出，重启docker

systemctl daemon-reload
service docker restart

测试远程连接是否正常 输出下面的内容 如果出现以下内容则能正常连接

curl http://localhost:2375/version
{"Platform":{"Name":"Docker Engine - Community"},"Components":[{"Name":"Engine","Version":"20.10.5","Details":{"ApiVersion":"1.41","Arch":"amd64","BuildTime":"2021-03-02T20:15:27.000000000+00:00","Experimental":"false","GitCommit":"363e9a8","GoVersion":"go1.13.15","KernelVersion":"4.18.0-147.5.1.el8_1.x86_64","MinAPIVersion":"1.12","Os":"linux"}},{"Name":"containerd","Version":"1.4.4","Details":{"GitCommit":"05f951a3781f4f2c1911b05e61c160e9c30eaa8e"}},{"Name":"runc","Version":"1.0.0-rc93","Details":{"GitCommit":"12644e614e25b05da6fd08a38ffa0cfe1903fdec"}},{"Name":"docker-init","Version":"0.19.0","Details":{"GitCommit":"de40ad0"}}],"Version":"20.10.5","ApiVersion":"1.41","MinAPIVersion":"1.12","GitCommit":"363e9a8","GoVersion":"go1.13.15","Os":"linux","Arch":"amd64","KernelVersion":"4.18.0-147.5.1.el8_1.x86_64","BuildTime":"2021-03-02T20:15:27.000000000+00:00"}

开放阿里云端口

需要将2375端口进行开放才能被远程连接，如果是阿里云主机的话，可以直接登录阿里云去进行开放

最后

以上就是温婉蜻蜓为你收集整理的【CentOS 8】docker安装软件更新卸载旧版本使用存储库进行安装启动docker设置docker开机自启修改docker下载源启动docker服务允许远程访问的全部内容，希望文章能够帮你解决【CentOS 8】docker安装软件更新卸载旧版本使用存储库进行安装启动docker设置docker开机自启修改docker下载源启动docker服务允许远程访问所遇到的程序开发问题。

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