charm seems to be ignoring juju model-config proxy settings

[Nikolay Vinogradov]

By default in a fully proxy environment with juju-proxy* and juju-no-proxy settings specified for the model the charm can't connect to the mirror list because it ignores that settings.

The workaroud is to configure shell proxy env. vars and upload them to the charm like that:
$ cat juju-proxy.conf | juju ssh glance-simplestreams-sync/0 "sudo tee /etc/juju-proxy.conf"

Where juju-proxy.conf contains:
$ cat juju-proxy.conf
http_proxy=<http://http_proxy_host:port>
https_proxy=<http://http_proxy_host:port>
NO_PROXY=<comma-separated-list-of-no-proxy-stuff>
export http_proxy https_proxy NO_PROXY

[Nikolay Vinogradov (nikolay.vinogradov)]

Possibly a duplicate of https://bugs.launchpad.net/charm-glance-simplestreams-sync/+bug/1843486