Ubuntu安装东西报错Connection failed [IP: 91.189.88.152 80] E: Unable to fetch some archives, maybe run……

前言：

最近在给自己服务器安装engix时一直报一些奇怪的错误，解决一个又出现另一个，头都大了，困扰我两天了，通过不断试错法，终于也解决了一些相应的问题

一、问题描述：

在安装engix时，出现以下错误，后来尝试安装其它的东西也是如此

sudo apt-get install engix

错误日志：

Connection failed [IP: 91.189.88.152 80]
E: Unable to fetch some archives, maybe run apt-get update or try with --fix-missing? 

在网上查询后说需要执行以下更新：sudo apt-get update

我执行时还是一样的错误

后来查询到需要修改source.list 国内更新源，这个文件在/etc/apt 下

我使用的是xftp进行连接处理，首先备份一份此文件，然后复制到左边windows,在从本地进行修改此文件的内容后替换到Ubuntu中

修改内容：

1、阿里云更新源：

# deb cdrom:[Ubuntu 16.04 LTS _Xenial Xerus_ - Release amd64 (20160420.1)]/ xenial main restricted
deb-src http://archive.ubuntu.com/ubuntu xenial main restricted #Added by software-properties
deb http://mirrors.aliyun.com/ubuntu/ xenial main restricted
deb-src http://mirrors.aliyun.com/ubuntu/ xenial main restricted multiverse universe #Added by software-properties
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-updates main restricted multiverse universe #Added by software-properties
deb http://mirrors.aliyun.com/ubuntu/ xenial universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates universe
deb http://mirrors.aliyun.com/ubuntu/ xenial multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-updates multiverse
deb http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-backports main restricted universe multiverse #Added by software-properties
deb http://archive.canonical.com/ubuntu xenial partner
deb-src http://archive.canonical.com/ubuntu xenial partner
deb http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted
deb-src http://mirrors.aliyun.com/ubuntu/ xenial-security main restricted multiverse universe #Added by software-properties
deb http://mirrors.aliyun.com/ubuntu/ xenial-security universe
deb http://mirrors.aliyun.com/ubuntu/ xenial-security multiverse

sudo apt-get update  问题解决