Ubuntu镜像源cn.arichinve.ubuntu.com不可用原因分析和解决

文章目录 Ubuntu查看系统版本Ubuntu更新系统不能更新Ubuntu查看APT更新源配置cn.archive.ubuntu 已经自动跳转到清华镜像站Ubuntu变更镜像源地址备份原文件批量在VIM中变更 Ubuntu国内镜像站推荐推荐阅读 今天想要在Ubuntu环境下搭建一个测试环境，进入Ubuntu系统后，先看了下系统版本

Ubuntu查看系统版本 lsb_release -a Ubuntu更新系统不能更新 sudo apt-get update

在执行后，发现报错如下，发现一个很奇怪的现象，我明明记得源配置的是cn.archive.ubuntu ,但是发现，系统更新时，自动去找了清华大学的Ubuntu源。why？难道是我源配置的是清华的吗？

Err:5 http://ppa.launchpad.net/deadsnakes/ppa/ubuntu bionic InRelease 503 Service Unavailable [IP: 185.125.190.52 80] Err:1 http://mirrors.tuna.tsinghua.edu /ubuntu bionic InRelease 503 Service Unavailable [IP: 101.6.15.130 80] Err:2 http://mirrors.tuna.tsinghua.edu /ubuntu bionic-updates InRelease 503 Service Unavailable [IP: 101.6.15.130 80] Err:3 http://mirrors.tuna.tsinghua.edu /ubuntu bionic-backports InRelease 503 Service Unavailable [IP: 101.6.15.130 80] Err:4 http://mirrors.tuna.tsinghua.edu /ubuntu bionic-security InRelease 503 Service Unavailable [IP: 101.6.15.130 80] Reading package lists... Done Ubuntu查看APT更新源配置 sudo vim /etc/apt/sources.list

通过VIM编辑器查看，源地址没错，为什么更新的时候去找了清华源呢？

See http://help.ubuntu /community/UpgradeNotes for how to upgrade to # newer versions of the distribution. deb http://cn.archive.ubuntu /ubuntu bionic main restricted # deb-src http://cn.archive.ubuntu /ubuntu bionic main restricted ## Major bug fix updates produced after the final release of the ## distribution. deb http://cn.archive.ubuntu /ubuntu bionic-updates main restricted # deb-src http://cn.archive.ubuntu /ubuntu bionic-updates main restricted ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team. Also, please note that software in universe WILL NOT receive any ## review or updates from the Ubuntu security team. deb http://cn.archive.ubuntu /ubuntu bionic universe # deb-src http://cn.archive.ubuntu /ubuntu bionic universe deb http://cn.archive.ubuntu /ubuntu bionic-updates universe # deb-src http://cn.archive.ubuntu /ubuntu bionic-updates universe ## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu ## team, and may not be under a free licence. Please satisfy yourself as to ## your rights to use the software. Also, please note that software in ## multiverse WILL NOT receive any review or updates from the Ubuntu ## security team. deb http://cn.archive.ubuntu /ubuntu bionic multiverse # deb-src http://cn.archive.ubuntu /ubuntu bionic multiverse deb http://cn.archive.ubuntu /ubuntu bionic-updates multiverse # deb-src http://cn.archive.ubuntu /ubuntu bionic-updates multiverse ## N.B. software from this repository may not have been tested as ## extensively as that contained in the main release, although it includes ## newer versions of some applications which may provide useful features. ## Also, please note that software in backports WILL NOT receive any review ## or updates from the Ubuntu security team. deb http://cn.archive.ubuntu /ubuntu bionic-backports main restricted universe multiverse # deb-src http://cn.archive.ubuntu /ubuntu bionic-backports main restricted universe multiverse ## Uncomment the following two lines to add software from Canonical's ## 'partner' repository. ## This software is not part of Ubuntu, but is offered by Canonical and the ## respective vendors as a service to Ubuntu users. # deb http://archive.canonical /ubuntu bionic partner # deb-src http://archive.canonical /ubuntu bionic partner deb http://cn.archive.ubuntu /ubuntu bionic-security main restricted # deb-src http://cn.archive.ubuntu /ubuntu bionic-security main restricted deb http://cn.archive.ubuntu /ubuntu bionic-security universe # deb-src http://cn.archive.ubuntu /ubuntu bionic-security universe deb http://cn.archive.ubuntu /ubuntu bionic-security multiverse # deb-src http://cn.archive.ubuntu /ubuntu bionic-security multiverse cn.archive.ubuntu 已经自动跳转到清华镜像站

带着很多问号，在浏览器打开http://cn.archive.ubuntu ，发现网站已经自动跳转到清华镜像站了。 以为网站需要https打开，发现该网站无法打开。 有知道原因的小伙伴吗？希望大家不吝分享。

Ubuntu变更镜像源地址

虽然访问http://cn.archiv.ubuntu 会自动跳转到清华源，但是我们还是做一个镜像源地址变更。 使用如下命令将镜像文件中的cn.archive.ubuntu 批量更换为清华源。

备份原文件

变更前记得备份原始的/ etc / apt / sources.list文件

$sudo cp / etc / apt / sources.list / etc / apt / sources.list.bak 批量在VIM中变更

在vim编辑器批量变更字符串，方法如下，按下esc后，输入：

:%s/cn\.archive\.ubuntu\ /mirrors\.tuna\.tsinghua\.edu\ /g

第一次替换时，少打了一个“.”报错提示：E486: Pattern not found。这个报错时指没有找到特定的字符，重新检查错误后，发现"."在正则表达式中通常是特殊字符，所以需要使用\ 来转义它，以确保准确匹配点号。所以， .csdn.net 转换后，应该时 .csdn.net。这也算是一个语法上的注意事项。

Ubuntu国内镜像站推荐

除了官方的cn.archive.ubuntu 外，国内还有多个Ubuntu的稳定镜像站：

清华大学开源软件镜像站： mirrors.tuna.tsinghua.edu /ubuntu/ 阿里巴巴开源镜像站： mirrors.aliyun /ubuntu/ Ubuntu官方镜像站： http://archive.ubuntu /ubuntu/

当然还有一些其他的，以上三个是我个人觉得比较好用的。上文希望对大家有所帮助。

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