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Ubuntu18.04..5 配置国内镜像源:解决E: Failed to fetch

发布于:2022-02-28 10:44:05  栏目:技术文档

本文来自于【阿里云官方镜像站:https://developer.aliyun.com/mirror/?utm_content=g_1000307095 】

转发自【https://blog.csdn.net/qq_46092061/article/details/118878697】

问题描述

使用 sudo apt get-install 出现 E: Failed to fetch问题。

更换镜像源

错误原因:绝大多数情况下,ROS更新的下载源都是正常的,所以出现这个问题,应该是自己系统一些配置设置问题。

既然网络出现问题,我们更换下载源:

使用gedit或vi/vim打开配置文件:

sudo gedit /etc/apt/sources.list

或者

sudo vim /etc/apt/sources.list

替换里面全部内容

deb http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse

deb-src http://mirrors.aliyun.com/ubuntu/ bionic main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse

deb-src http://mirrors.aliyun.com/ubuntu/ bionic-security main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse

deb-src http://mirrors.aliyun.com/ubuntu/ bionic-updates main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse

deb-src http://mirrors.aliyun.com/ubuntu/ bionic-proposed main restricted universe multiverse

deb http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse

deb-src http://mirrors.aliyun.com/ubuntu/ bionic-backports main restricted universe multiverse

然后生效配置文件(刷新列表)

sudo apt-get update

注意:一定要执行刷新

配置DNS网关

Terminal下输入命令

sudo gedit /etc/resolv.conf

或者

sudo vi /etc/resolv.conf

在resolv.conf里面添加阿里DNS

nameserver 127.0.0.53

sudo apt-get update

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