Upgrade 16.04 to 18.04

[Jeffrey Lane]

Hi Steve,

On Fri, May 1, 2020 at 5:42 PM Steve Langasek <steve.langasek at ubuntu.com> wrote:
>
> On Fri, May 01, 2020 at 09:01:01PM +0000, Leroy Tennison wrote:
>
> > Tried do-release-upgrade which said "No new releases..."  Realized it's
> > probably due to the just-released 20.04.  A quick search of the web almost
> > always lists do-release-upgrade.  Even if 20.04 had been out long enough,
> > I'm not ready to move to that yet.  Short of "re-install" what are my
> > other options?  Thanks for your help.
>
> I've been able to reproduce this and tracked it down to the fact that
> do-release-upgrader fails to verify the SSL certificate of
> changelogs.ubuntu.com in a bare-bones environment, because the
> ca-certificates package is not installed.
>
> This is bug #1796940, which we will look into getting SRUed back into
> xenial.
>
> You can work around the problem by manually installing the ca-certificates
> package.

This does not appear to be the case for me.  I've just recreated that
really quickly in my lab by installing a server with bionic and trying
to run do-release-upgrade on that.  With Prompt in release-upgrades
set to either lts or normal, I can't get do-release-upgrade to do
anything.

https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1876420

Interestingly. last Friday, I was able to kick off an upgrade
elsewhere using -d, as Focal still showed up as a development release
on Friday.

Jeff

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> --
> Steve Langasek                   Give me a lever long enough and a Free OS
> Debian Developer                   to set it on, and I can move the world.
> Ubuntu Developer                                   https://www.debian.org/
> slangasek at ubuntu.com                                     vorlon at debian.org
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-- 
Jeff Lane
Engineering Manager
IHV/OEM Alliances and Server Certification

"Entropy isn't what it used to be."