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背景

在windows下装完docker后，开始尝试在ubuntu下安装。但由于ubuntu14装完docker后，重启总是报错/sbin/bash:no such file or directory，只能重装系统，试了几次只能换CentOS，然后一次就成功了。

使用的CentOS版本：CentOS7.8，64位

CentOS安装

安装其实没啥好说的，注意新建虚拟机时，最后一步要在自定义硬件中，对处理器进行虚拟化引擎。下面是我新建ubuntu时进行的截图，同样适用于CentOS。

然后装系统时，要选择安装server-gui，否则没有图形化界面

更改yum源

要把yum修改为国内镜像源，否则下载东西很慢。先备份原文件

sudo cp /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo.bak

然后把以下内容复制到CentOS-Base.repo文件中

# CentOS-Base.repo## The mirror system uses the connecting IP address of the client and the# update status of each mirror to pick mirrors that are updated to and# geographically close to the client.  You should use this for CentOS updates# unless you are manually picking other mirrors.## If the mirrorlist= does not work for you, as a fall back you can try the# remarked out baseurl= line instead.##[base]name=CentOS-$releasever - Basebaseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/os/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=osenabled=1gpgcheck=1gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-7#released updates[updates]name=CentOS-$releasever - Updatesbaseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/updates/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=updatesenabled=1gpgcheck=1gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-7#additional packages that may be useful[extras]name=CentOS-$releasever - Extrasbaseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/extras/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=extrasenabled=1gpgcheck=1gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-7#additional packages that extend functionality of existing packages[centosplus]name=CentOS-$releasever - Plusbaseurl=https://mirrors.tuna.tsinghua.edu.cn/centos/$releasever/centosplus/$basearch/#mirrorlist=http://mirrorlist.centos.org/?release=$releasever&arch=$basearch&repo=centosplusgpgcheck=1enabled=0gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-7

第三步，新建/etc/pki/rpm-gpg/RPM-GPG-KEY-7文件，然后用火狐登录获取key，并复制到新建的文件中保存

最后，更新yum缓存

yum clear allyum makecache

安装docker

yum install -y docker

设置阿里加速源

下面要为docker设置镜像加速，否则拉取远程镜像时很慢

sudo mkdir -p /etc/dockersudo tee /etc/docker/daemon.json <<-'EOF' { "registry-mirrors": ["https://r7g9xefx.mirror.aliyuncs.com"] } EOFsudo systemctl daemon-reload

运行docker

service docker start

设置开机启动

chkconfig docker on

结语

ubuntu14真是太坑了，浪费我一晚上.....

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