I am in the process of updating a bunch of machines to 12.xx.
For regular package updates I tried apt-proxy, which had random hiccups (clients hanging on various headers). Now I installed apt-cacher-ng, but that seems not to work when running do-release-upgrade (I'm guessing because the special update-info does not match some URL pattern of apt-cacher-ng):
user@machine:~# sudo do-release-upgrade --proposed
Checking for a new ubuntu release
Failed Upgrade tool signature
Done Upgrade tool
Done downloading
authenticate 'lucid.tar.gz' against 'lucid.tar.gz.gpg'
exception from gpg: GnuPG exited non-zero, with code 131072
Debug information:
gpg: can't open `/tmp/tmpJCfO-a/lucid.tar.gz.gpg'
gpg: verify signatures failed: file open error
Authentication failed
Authenticating the upgrade failed. There may be a problem with the network or with the server.
Now I read about squid-deb-proxy and the dynamic broadcasting seems neat, especially since we have notebooks in our office.
Will that proxy work with do-release-upgrade or should I set up my own Squid altogether?
