内网anaconda如何使用代理，避免网络连接失败？

问题征兆

在内网环境使用anaconda创建新环境：

conda create --name py39 python=3.9

由于网络原因，遇到如下报错：

Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<urllib3.connection.HTTPConnection object at 0xffffa9760650>: Failed to establish a new connection: [Errno 101] Network is unreachable')': /anaconda/pkgs/free/linux-aarch64/repodata.json.zstCondaHTTPError: HTTP 000 CONNECTION FAILED for url <http://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/linux-aarch64/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.
'http//mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free/linux-aarch64'

Platform: linux-aarch64
Collecting package metadata (repodata.json): failedUnavailableInvalidChannel: HTTP 404 NOT FOUND for channel defaults <https://conda.anaconda.org/defaults>The channel is not accessible or is invalid.You will need to adjust your conda configuration to proceed.
Use `conda config --show channels` to view your configuration's current state,
and use `conda config --show-sources` to view config file locations.

解决方法

解决方法是，编辑~/.condarc，粘贴如下内容。其中channels可以替换成其它源，比如清华源、阿里源。

channel_priority: strict
show_channel_urls: true
ssl_verify: false
proxy_servers:http: http://10.58.235.16:3128https: http://10.58.235.16:3128
channels:- https://repo.continuum.io/pkgs/main/- https://repo.continuum.io/pkgs/free/

注意：

1. 设置proxy_servers，指向你的代理服务器，如有必要填上用户名密码，使用http协议。
2. 设置ssl_verify: false，避免conda做tls校验导致网络连接失败。这个选项是为了搭配代理IP的http协议一起使用。
3. 不需要设置channel_alias。
4. channels属性里删掉defaults、main等项，只保留第三方源。