CondaHTTPError: HTTP 000 CONNECTION FAILED for url

问题描述：
刚开始安装pytorch总是不成功，发现一直出现如下问题：

Solving environment: failed
CondaHTTPError: HTTP 000 CONNECTION FAILED for url
https://mirrors.tuna.tsinghua.edu.cn/anaconda/cloud/msys2/noarch/repodata.json
Elapsed: -

An HTTP error occurred when trying to retrieve this URL. HTTP errors
are often intermittent, and a simple retry will get you on your way.
ConnectionError(MaxRetryError(“HTTPSConnectionPool(host=‘mirrors.tuna.tsinghua.edu.cn’,
port=443): Max retries exceeded with url:
/anaconda/cloud/msys2/noarch/repodata.json (Caused by
NewConnectionError(’<urllib3.connection.VerifiedHTTPSConnection object
at 0x7fe41c681358>: Failed to establish a new connection: [Errno -3]
Temporary failure in name resolution’))”))

刚开始以为设置conda源的问题，改了几遍都不行，怀疑是网络设置问题。
然后ping了正常网络，果然不行。

然后进入DNS设置发现里面进入啥都没有，怪不得找不到。于是设置一下DNS就解决问题了。
操作如下：

#编辑resolv.conf
$ sudo vi /etc/resolv.conf

添加内容容下：

nameserver 127.0.1.1
#这里用的是阿里云的DNS服务器
nameserver 223.5.5.5
nameserver 223.6.6.6

解决问题