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source/_posts/docker/Docker.md
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source/_posts/docker/Docker.md
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---
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title: docker
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date: 2020-08-27
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updated: 2021-09-25
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tags: docker
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categories: docker
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keywords: docker
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description: docker中安装Mysql
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top_img: https://i.loli.net/2021/09/30/xQP2JVs3I9Zt1le.jpg
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comments: true
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cover: https://i.loli.net/2021/09/30/xQP2JVs3I9Zt1le.jpg
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copyright: true
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copyright_author: xzh
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copyright_author_href: http://xxzhx.cn
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copyright_url: http://xxzhx.cn
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copyright_info: 著作权归作者所有。商业转载请联络作者获得授权,非商业转载请注明出处。
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---
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# 1、docker的安装
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## 1.1、安装工具
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`sudo yum install -y yum-utils device-mapper-persistent-data lvm2`
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```
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device-mapper-persistent-data lvm2是干嘛的?
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docker要想数据存储就必须要安装这两个,这两个是为了docker做数据存储用的。
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```
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## 1.2、添加源为国内
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`sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo`
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## 1.3、更新安装Docker-CE
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`sudo yum makecache fast`
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`sudo yum -y install docker-ce`
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## 1.4、启动验证
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`sudo service docker start`
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`docker version`
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# 2、配置阿里镜像加速器
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## 2.1、去阿里搜索`容器镜像服务`
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## 2.2、执行命令
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按照上面的命令输入
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```
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sudo mkdir -p /etc/docker
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sudo tee /etc/docker/daemon.json <<-'EOF'
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{
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"registry-mirrors": ["https://xxx.aliyuncs.com"]
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}
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EOF
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sudo systemctl daemon-reload
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sudo systemctl restart docker
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```
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# 3、镜像的安装
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## 3.1、拉取镜像
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`docker pull xxx` 例:`docker pull tomcat`
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```
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完整命令是:docker pull 镜像名<:tags> 从远程仓库拉取镜像。如果没写:tags则代表是latest版本
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```
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## 3.2、查看镜像
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`docker images`
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## 3.3、启动容器
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`docker run xxx:版本号(最新版可省略)` 例:`docker run tomcat` `docker run tomcat:latest`
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```
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完整命令是:docker run 镜像名<:tags> 这里没指定tag就代表是latest
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```
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`docker run -d --name xxx -p port1:port2 xxx` 例:`docker run -d --name tomcat1 -p 8080:8080 tomcat`
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```
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-d:后台启动
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-p:端口映射
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--name:设置容器名称
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```
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## 3.4、查看容器信息
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查看启动的容器:`docker ps`
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查看所有容器:`docker ps -a`
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## 3.4、删除容器
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`docker rm xxx` 例:`docker rm 87f2b3a10855`
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```
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删除需要用容器的ID 不能用名称
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```
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## 3.5、进入容器里面
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`docker exec-it xxx bash` 例:`docker exec -it tomcat bash` `docker exec -it 87f2b3a10855 bash`
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```
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进入容器可以使用名称和容器ID都可以进入
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```
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退出:ctrl+p+q
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## 3.6、关闭/重启容器
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关闭:`docker stop xxx` 例:`docker stop 87f2b3a10855`
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重启:`docker restatr xxx` 例:`docker restatr 87f2b3a10855`
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# 4、常用命令总结
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| 解释 | 命令 |
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| :------------------------------: | :----------------------------------------------------------: |
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| docker pull 镜像名<:tags> | 从远程仓库拉取镜像到本地仓库 |
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| docker images | 查看本地仓库所有镜像 |
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| docker run 镜像名<:tags> | 基于镜像创建容器并启动,可以添加-d port1:port2参数,port1:宿主机端口,port2:容器端口, -d参数代表后台运行 |
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| docker ps | 查看当前所有启动的容器 |
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| docker ps -a | 查看本地所有容器,包含未启动的,删除容器的时候可用来查询容器id |
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| docker start/stop/restart 容器id | 启动/停止/重启容器 |
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| docker rm <-f> 容器id | 删除<-f:强制删除>容器,运行中的容器不能删除,-f可以强制 |
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| docker rmi <-f> 镜像名称 <:tags> | 删除<强制删除>镜像,镜像有容器在启动,不能被删除,-f可以强制 |
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| docker exec [-it] 容器id 命令 | 进入容器主目录,exec:在对应容器中执行命令,-it:采用交互方式执行命令 |
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