On Tue, Jul 08, 2025 at 09:22:06AM +0200, Zdenek Dohnal wrote:
> Hi all,
> 
> thank you for all the work you did/are doing atm with datacenter move! I'm
> looking forward to faster infrastructure for my builds and tests :) .
> 
> Unfortunately (as with every big change) discrepancies are appearing and
> although I've tried to check emails here and the blog post on the community
> blog, I didn't find whether there are some steps to take for packagers after
> the datacenter move, so I don't know atm whether the issues I see are part
> of post movement work and they will be fixed soon, or whether I as a
> packager have to make some configuration changes.
> 
> I see two issues atm:
> 
> 1. when I try to pull updates from pkgs.fedoraproject.org, I get an error
> that host key has changed:

You can use any of the following methods to verify the host key:

1. Copy https://admin.fedoraproject.org/ssh_known_hosts to your
~/.ssh/known_hosts. This will trust our certificate authority, which in
turn will validate the host key (and any other ones we sign moving
foward).

2. Use SSHFP dns records with 'VerifyHostKeyDNS=yes'. If you have dnssec
enabled this should just trust the key, if not it will ask you, so not a
good method if you don't have dnssec.

3. Check the host key against:
https://src.fedoraproject.org/ssh_info

We should probibly put this info into onboarding docs, it's just been a
long time since it changed. 
> 
> ===========================================================================================
> 
> 2. when I try to update my Fedora 42, there are many checksum mismatches:
> 
> ===========================================================================================
> 
> $ sudo dnf -y upgrade --refresh
> ...
>  Fedora 42 - x86_64 - Updates 66% [============      ] |  46.5 KiB/s | 184.2
> KiB |  00m01s
>  Fedora 42 - x86_64 - Updates 66% [============      ] |  46.5 KiB/s | 184.4
> KiB |  00m01s
> >>> Downloading successful, but checksum doesn't match. Calculated: 
> >>> 98f903f88c9483cd64474dd2b1648a1e2f211321cebdd80c2f917436604acc41373fac16c2e1aa4b8d44c2b2e42c8f8c9a14cec7b2cca897f0a1e06dcabe23bb(sha512)
> 98f903f
> 
> ===========================================================================================
> 
> and so on, but only for Updates repo.

This should be fixed now.


> 
> I saw there is infra issue about this -
> https://pagure.io/fedora-infrastructure/issue/12620 - but I would like to
> consult this here beforehand, so I wouldn't spam the ticket.
> 
> The latter problem looks like a post-move problem to me, which will get
> solved outside of the machine, but the former maybe it is expected from
> packagers to change?
> 
> If there are actually some steps packagers have to take after move, it would
> be great if it was announced beforehand (if it is known beforehand it will
> have to be done) or after all post-movement work is done.
> 
> Thank you in advance!

I tried to announce things to devel-announce (which also cc to this
list).

Open to ideas on how to better announce things. 

kevin
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