ubuntu18 ERROR: unable to process source [https://raw.githubusercontent.com/ros/rosdistro/master/ros

问题描述

reading in sources list data from /etc/ros/rosdep/sources.list.d
ERROR: unable to process source [https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/osx-homebrew.yaml]:
	<urlopen error [Errno 111] Connection refused> (https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/osx-homebrew.yaml)
ERROR: unable to process source [https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/base.yaml]:
	<urlopen error [Errno 111] Connection refused> (https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/base.yaml)
ERROR: unable to process source [https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/python.yaml]:
	<urlopen error [Errno 111] Connection refused> (https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/python.yaml)
ERROR: unable to process source [https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/ruby.yaml]:
	<urlopen error [Errno 111] Connection refused> (https://raw.githubusercontent.com/ros/rosdistro/master/rosdep/ruby.yaml)
ERROR: unable to process source [https://raw.githubusercontent.com/ros/rosdistro/master/releases/fuerte.yaml]:
	Failed to download target platform data for gbpdistro:
	<urlopen error [Errno 111] Connection refused>
Query rosdistro index https://raw.githubusercontent.com/ros/rosdistro/master/index-v4.yaml
ERROR: error loading sources list:
	<urlopen error <urlopen error [Errno 111] Connection refused> (https://raw.githubusercontent.com/ros/rosdistro/master/index-v4.yaml)>

问题原因

问题原因不是很清楚，之前看哪些博文的时候记得好像说是
“因为某些众所周知的原因，啥啥啥dns污染所以找不到[https://raw.githubusercontent.com”

解决方法

第一步：不明所以
不清楚是什么情况，首先先确认下有没有这个文件夹，如果没有依次创建

/etc/ros/rosdep/sources.list.d

第二步：手动添加ip
域名ip查询
输入 raw.githubusercontent.com
结果不出意外是这个
然后从里面挑一个ip地址加上 raw.githubusercontent.com

151.101.76.133 raw.githubusercontent.com

将这个写进下面的文件里，最上面的那个是最优先查询的，建议添加中国香港的ip

sudo gedit /etc/hosts

然后就可以了