If you cannot go from 3.x -> 4.1 (I'll concede a few gotchas) then 4.1
shouldn't be a minor release.
As others have stated though, it should work.

On Tue, Apr 21, 2020 at 1:24 PM Rawlin Peters <[email protected]> wrote:

> We squashed the DB migrations in the 4.0 release, so you would need to
> at least run the DB migrations for 3.0/3.1 (pretty sure both had the
> exact same migrations) before upgrading to 4.0 or 4.1. So, I don't
> think there is anything precluding someone from upgrading from 3.x
> directly to 4.1.
>
> - Rawlin
>
> On Tue, Apr 21, 2020 at 10:28 AM ocket 8888 <[email protected]> wrote:
> >
> > >
> > > Is upgrading directly from 3.x to 4.1 supported, or only via 4.0?
> > >
> > > Jonathan
> >
> >
> > I couldn't say for sure but I do think you need to be on the latest 3.x
> to
> > get to 4.x, fyi.
> >
> > On Tue, Apr 21, 2020 at 9:58 AM Gray, Jonathan <
> [email protected]>
> > wrote:
> >
> > > Is upgrading directly from 3.x to 4.1 supported, or only via 4.0?
> > >
> > > Jonathan
> > >
> > > On 4/21/20, 9:13 AM, "Dave Neuman" <[email protected]> wrote:
> > >
> > >     Hey All,
> > >     I know we just got 4.0 released, but in the spirit of quicker and
> > > smaller
> > >     releases, I think it is time to start working on our 4.1 release.
> 4.1
> > >     already has quite a bit of new functionality in it, as well as a
> move
> > > to
> > >     the 2.0 API, so it's already big enough to warrant a new release.
> I put
> > >     together some high level release notes for 4.1, please see below.
> If
> > > you
> > >     have anything in particular that you are still working on and want
> to
> > > get
> > >     into 4.1 please let me and Rawlin know BEFORE we cut the 4.1
> branch,
> > >     preferably by the end of the week.
> > >
> > >     Thanks,
> > >     Dave
> > >
> > >     *ATC 4.1*
> > >     Changelog:
> > >
> https://urldefense.com/v3/__https://github.com/apache/trafficcontrol/blob/master/CHANGELOG.md__;!!CQl3mcHX2A!VDZjBKh7gfws65t1_kLpKgt5-8VN-MEa1AtQCA0Ez-lIZ3lu79bGJ8xzBXOIm-mDUrqK$
> > >
> > >     *New Features: *
> > >     Added support for ATS Slice Plugin on HTTP/DNS DSes
> > >     Added eDNS0 Client Subnet support per DS
> > >     Added the ability to fetch users by role
> > >     Added Let's Encrypt support for managing certificates
> > >     Added support for IPv6 only caches
> > >
> > >     *Improvements: *
> > >     Traffic Router DNSSEC Zone Diffing
> > >     Added optimistic quorum to Traffic Monitor
> > >     More Golang API endpoint conversions
> > >     Atscfg now generates all Config Files at once reducing load on TO
> > >     Updated all clients to use API 2.0
> > >
> > >     *Bug Fixes:*
> > >     Increased default ORT (atscfg) timeout from 10s to 30s, made it
> > > configurable
> > >     Fixed Traffic Portal regenerating CDN DNSSEC keys with the wrong
> > > effective
> > >     date
> > >
> > >     *Other: *
> > >     API updated to version 2.0
> > >     Deprecated Db/admin.pl script was removed in favor of the db/admin
> > > binary
> > >     Traffic Ops Python client no longer supports Python 2
> > >     Many unused or unnecessary API endpoints
> > >
> > >
>

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