Centos7.8
CentOS 7.8。
必须开启 centos-extras
yum仓库源。默认是开启的,如果关闭了,需要重新开启,如下
编辑 /etc/yum.repos.d/CentOS-Base.repo
,找到extras
配置结点,修改enabled=1后,更新yum源
#additional packages that may be useful [extras] name=CentOS-$releasever - Extras mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extras&infra=$infra #baseurl=http://mirror.centos.org/centos/$releasever/extras/$basearch/ gpgcheck=1 gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-CentOS-7
推荐使用 overlay2
存储驱动
RPM
安装包,然后 手动安装,手动升级。如果目标机不能上网,这是个不错的选择。Docker
仓库源安装第一次安装docker-ce
之前,需要设置Docker
仓库源。此后,基于该仓库源安装和升级
安装 yum-utils
包(该软件包提供了yum-config-manager
工具),并且设置稳定版stable
仓库源.
$ sudo yum install -y yum-utils # ...略 $ sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo Loaded plugins: fastestmirror adding repo from: https://download.docker.com/linux/centos/docker-ce.repo grabbing file https://download.docker.com/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo repo saved to /etc/yum.repos.d/docker-ce.repo
docker-ce
安装最新版本的docker-ce
和containerd
$ sudo yum install docker-ce docker-ce-cli containerd.io
以上命令执行完成后,默认会创建docker
组,但是不会添加任何用户到该组,不同方式安装都会创建该组,不再赘述
安装指定版本的docker-ce
a. 按顺序显示repo库源中可获取的版本(例中为按版本从高到低排序):
$ yum list docker-ce --showduplicates | sort -r docker-ce.x86_64 3:18.09.1-3.el7 docker-ce-stable docker-ce.x86_64 3:18.09.0-3.el7 docker-ce-stable docker-ce.x86_64 18.06.1.ce-3.el7 docker-ce-stable docker-ce.x86_64 18.06.0.ce-3.el7 docker-ce-stable
b. 安装指定版本的docker-ce
$ sudo yum install docker-ce-<VERSION_STRING> docker-ce-cli-<VERSION_STRING> containerd.io
例子:安装docker-ce-18.09.1
.
$ sudo yum install docker-ce-18.09.1 docker-ce-cli-18.09.1 containerd.io
启动 Docker
安装完docker-ce
后,会在/lib/systemd/system
目录下生成docker.service
$ sudo systemctl start docker $ sudo systemctl enable docker.service # 设置开机自启动
确认docker-ce
是否正确安装
可通过运行 sudo docker run hello-world
命令测试Docker
是否安装成功
$ sudo docker run hello-world Unable to find image 'hello-world:latest' locally latest: Pulling from library/hello-world b8dfde127a29: Pull complete Digest: sha256:89b647c604b2a436fc3aa56ab1ec515c26b085ac0c15b0d105bc475be15738fb 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/
以上命令,会下载一个测试镜像,并在容器中运行它,当容器运行时,会线打印相关信息,然后退出
docker-ce
参考 安装指南
通过下载 .rpm
包,然后手工安装。下载地址:https://download.docker.com/linux/centos/ ,找到 x86_64/stable/Packages/
目录下载目标版本的 .rpm
包
rpm
安装
$ sudo yum install /path/to/package.rpm
其它剩余步骤同上,略
docker-ce
通过rpm -y update
命令
略
docker-ce
卸载docker-ce
, CLI
, 和 Containerd
软件包
$ sudo yum remove docker-ce docker-ce-cli containerd.io
手动移除镜像,容器,和数据卷,及其它自定配置文件
删除所有镜像,容器,和数据卷:
$ sudo rm -rf /var/lib/docker $ sudo rm -rf /var/lib/containerd