class="hljs-ln-code"> class="hljs-ln-line">$ uname -r class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="3"> class="hljs-ln-code"> class="hljs-ln-line">4.18.0-553.el8_10.x86_64 class="hljs-button signin active" data-title="登录复制" data-report-click="{"spm":"1001.2101.3001.4334"}" onclick="hljs.signin(event)">
Linux内核版本在3.10以上才可以安装
移除旧版本:
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="1"> class="hljs-ln-code"> class="hljs-ln-line">(base) zhengguiliang 17:41:11 ~/yz
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="2"> class="hljs-ln-code"> class="hljs-ln-line">$ yum remove docker docker-common docker-selinux docker-engine
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="3"> class="hljs-ln-code"> class="hljs-ln-line">$ yum remove docker-ce
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安装依赖软件包:
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="1"> class="hljs-ln-code"> class="hljs-ln-line">
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="2"> class="hljs-ln-code"> class="hljs-ln-line">(base) zhengguiliang 17:43:36 ~/yz
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="3"> class="hljs-ln-code"> class="hljs-ln-line">$ yum install -y yum-utils device-mapper-persistent-data lvm2
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安装docker-ce
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="1"> class="hljs-ln-code"> class="hljs-ln-line">(base) zhengguiliang 17:43:36 ~/yz
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="2"> class="hljs-ln-code"> class="hljs-ln-line">$ yum -y install docker-ce
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启动docker,并设置为开机自动启动
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="1"> class="hljs-ln-code"> class="hljs-ln-line">#启动docker服务
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="2"> class="hljs-ln-code"> class="hljs-ln-line">systemctl start docker
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="3"> class="hljs-ln-code"> class="hljs-ln-line">#设置开机自动启动
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="4"> class="hljs-ln-code"> class="hljs-ln-line">systemctl enable docker
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四,docker常见操作

拉取自己需要的镜像:
docker pull nginx
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查看拉取到的镜像:
docker images
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删除本地镜像:
docker rmi nginx:katest
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导出镜像:
docker save -o nginx.tar nginx:latest
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加载镜像:
docker load -i nginx.tar
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五,容器操作

容器保护三个状态:
运行:进程正常运行
暂停:进程暂停,CPU不再运行,并不释放内存
停止:进程终止,回收进程占用的内存,CPU等资源
docker run:创建并运行一个容器,处于运行状态
docker pause:让一个运行的容器暂停
docker unpause:让一个容器从暂停状态恢复运行
docker stop:停止一个运行的容器
docker start:让一个停止的容器再次运行
docker rm:删除一个容器
查看正在运行的容器:
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="1"> class="hljs-ln-code"> class="hljs-ln-line"># 查看全部的容器,包括没有运行
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="2"> class="hljs-ln-code"> class="hljs-ln-line">docker ps -a
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- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="1"> class="hljs-ln-code"> class="hljs-ln-line"># 简单操作
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="2"> class="hljs-ln-code"> class="hljs-ln-line">docker run 镜像的标识|镜像名称[tag]
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="3"> class="hljs-ln-code"> class="hljs-ln-line"># 常用的参数
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="4"> class="hljs-ln-code"> class="hljs-ln-line">docker run -d -p 宿主机端口:容器端口 --name 容器名称 镜像的标识|镜像名称[tag]
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="5"> class="hljs-ln-code"> class="hljs-ln-line">#-d:代表后台运行容器
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="6"> class="hljs-ln-code"> class="hljs-ln-line">#-p:宿主机端口:容器端口:为了映射当前Linux的端口和容器的端口
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="7"> class="hljs-ln-code"> class="hljs-ln-line">#-i:保持docker和容器内的交互,启动容器时,运行命令结束,容器依然存活
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="8"> class="hljs-ln-code"> class="hljs-ln-line">#-t:为容器的标准输入拟一个tty
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="9"> class="hljs-ln-code"> class="hljs-ln-line">#--name 容器名称:指定容器的名称
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="10"> class="hljs-ln-code"> class="hljs-ln-line">#--rm 容器启动后就销毁
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进入容器:
docker exec -it 容器id bash
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dockerexec:进入容器内部,执行一个命令
-it:给当前进入的容器创建一个标准输入、输出终端,允许我们与容器交互
qf:要进入的容器的名称
bash:进入容器后执行的命令,bash是一个linux终端交互命令
查看容器日志:
docker logs -f 容器id
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删除容器:
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="1"> class="hljs-ln-code"> class="hljs-ln-line">#停止指定的容器
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="2"> class="hljs-ln-code"> class="hljs-ln-line">docker stop 容器id/容器名称
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="3"> class="hljs-ln-code"> class="hljs-ln-line">#停止全部容器
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="4"> class="hljs-ln-code"> class="hljs-ln-line">docker stop $(docker ps -qa)
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="5"> class="hljs-ln-code"> class="hljs-ln-line">#删除指定容器
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="6"> class="hljs-ln-code"> class="hljs-ln-line">docker rm 镜像id/容器名称
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="7"> class="hljs-ln-code"> class="hljs-ln-line">#删除全部容器
- class="hljs-ln-numbers"> class="hljs-ln-line hljs-ln-n" data-line-number="8"> class="hljs-ln-code"> class="hljs-ln-line">docker rm $(docker ps -qa)
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启动容器:
docker start 容器id/容器名称
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六,数据卷
数据卷是一个虚拟目录,指向宿主机文件系统中的某个目录。

一旦完成数据卷挂载,对容器的一切操作都会作用在数据卷对应的宿主机目录了。
docker volume [COMMAND]
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docker volume create:创建数据卷
docker volumels:查看所有数据卷
docker volumeinspect:查看数据卷详细信息,包括关联的宿主机目录位置
docker volumerm:删除指定数据卷
docker volume prune:删除所有未使用的数据卷
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