I was looking to upgrade my VPS to the latest Ubuntu release this afternoon but ran across a problem. Whenever I try to run "do-release-upgrade” I receive the following error:
Checking for a new Ubuntu release
Get:1 Upgrade tool signature [836 B]
Get:2 Upgrade tool [1,265 kB]
Fetched 1,266 kB in 0s (0 B/s)
authenticate 'xenial.tar.gz' against 'xenial.tar.gz.gpg'
gpg: Signature made Wed 07 Dec 2016 09:10:01 GMT using RSA key ID C0B21F32
gpg: /tmp/ubuntu-release-upgrader-r7c80csz/trustdb.gpg: trustdb created
Authenticating the upgrade failed. There may be a problem with the network or with the server.
Searching online, this looks like it could be a problem with the xenial.tar.gz file on the local repo cache. Has anyone
else had similar problems, and if so, how did you resolve them?
I suppose beyond that, has anyone successfully upgraded their Ubuntu VPS to 16.04? Were there any problems along the way?