yum how to set proxy

Enter management mode by typing your password and pressing Enter twice. Select Exit to terminal using the arrow keys and then press Enter.

2.Type:

nano /etc/yum.conf

3.Add a line with with information about your proxy. For example:

proxy=http://proxysvr.yourdom.com:3128

4.If the proxy requires username and password, add these settings. For example:

proxy=http://proxysvr.yourdom.com:3128

proxy_username=YourProxyUsername

proxy_password=YourProxyPassword

5.Press Ctrl+X and y to save the changes.

references:

https://www.activestate.com/resources/quick-reads/pip-install-proxy/