RMT doesn't support Proxy Authentication

This document (000020412) is provided subject to the disclaimer at the end of this document.

Environment

SUSE Linux Enterprise Server 15 SP2
Repository Mirroring Tool (RMT)

Situation

Trying to configure an RMT server that needs to reach the public internet by a proxy that requires authentication fails with '407 "Proxy Authentication Required".

From the /var/log/YaST2/y2log file:
[Ruby] yast/wfm.rb:272 Client /usr/share/YaST2/clients/rmt.rb failed with '407 "Proxy Authentication Required"' (Net::HTTPServerException).
Backtrace:
/usr/lib64/ruby/2.5.0/net/http/response.rb:122:in `error!'
/usr/lib64/ruby/2.5.0/net/http/response.rb:131:in `value'
/usr/lib64/ruby/2.5.0/net/http.rb:958:in `connect'
/usr/lib64/ruby/2.5.0/net/http.rb:920:in `do_start'
/usr/lib64/ruby/2.5.0/net/http.rb:909:in `start'
/usr/lib64/ruby/2.5.0/net/http.rb:609:in `start'
/usr/share/YaST2/lib/rmt/wizard_scc_page.rb:133:in `scc_credentials_valid?'
/usr/share/YaST2/lib/rmt/wizard_scc_page.rb:99:in `next_handler'
/usr/share/YaST2/lib/ui/event_dispatcher.rb:47:in `public_send'
/usr/share/YaST2/lib/ui/event_dispatcher.rb:47:in `block in event_loop'
/usr/share/YaST2/lib/ui/event_dispatcher.rb:43:in `loop'
/usr/share/YaST2/lib/ui/event_dispatcher.rb:43:in `event_loop'
/usr/share/YaST2/lib/rmt/wizard_scc_page.rb:113:in `run'
/usr/share/YaST2/lib/rmt/wizard.rb:50:in `block in run'
/usr/lib64/ruby/vendor_ruby/2.5.0/yast/builtins.rb:546:in `eval'
/usr/share/YaST2/modules/Sequencer.rb:249:in `WS_run'
/usr/share/YaST2/modules/Sequencer.rb:320:in `block in Run'
/usr/share/YaST2/modules/Sequencer.rb:312:in `loop'
/usr/share/YaST2/modules/Sequencer.rb:312:in `Run'
/usr/share/YaST2/lib/rmt/wizard.rb:72:in `run'
/usr/share/YaST2/clients/rmt.rb:21:in `<top (required)>'
/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:346:in `eval'
/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:346:in `run_client'
/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:207:in `call_builtin'
/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:207:in `call_builtin_wrapper'
/usr/lib64/ruby/vendor_ruby/2.5.0/yast/wfm.rb:196:in `CallFunction'
/usr/lib/YaST2/bin/y2start:60:in `<main>'

Resolution

To work around the limitation you can export to the environment using the syntax below before running yast2-rmt:

HTTP_PROXY=http://USERNAME:PASSWORD@PROXY-IP/

If TID 7006845 was used to configure the proxy then you will need to also adjust or remove the lowercase http_proxy and https_proxy environment variables.

Cause

The http call to verify the credentials doesn't support proxy authentication yet:

https://github.com/yast/yast-rmt/blob/master/src/lib/rmt/wizard_scc_page.rb#L133

Disclaimer

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