Upgrade from almalinux 8 to rocky 8 and then rocky 9

Rocky Linux Help & Support
1

In my infrastructure I had to Almalinux 8.10 by this guide

I upgrade it to rocky 8.10 then upgrade it to 9.6 by this guide

But I see on both server

```
sudo dnf update
warning: Signature not supported. Hash algorithm SHA1 not available.
Last metadata expiration check: 3:09:32 ago on Sun 16 Nov 2025 11:49:32 AM +0330.
Modular dependency problems:

Problem 1: conflicting requests

nothing provides module(platform:el8) needed by module nginx:1.20:8100020231017150618:e155f54d.x86_64 from @modulefailsafe
Problem 2: conflicting requests

nothing provides module(platform:el8) needed by module perl:5.26:8050020211109115414:b4937e53.x86_64 from @modulefailsafe
Problem 3: conflicting requests

nothing provides module(platform:el8) needed by module perl-IO-Socket-SSL:2.066:8090020231016070024:88fd4976.x86_64 from @modulefailsafe
Problem 4: conflicting requests

nothing provides module(platform:el8) needed by module perl-libwww-perl:6.34:8090020231016070052:8af8375c.x86_64 from @modulefailsafe
Problem 5: conflicting requests

nothing provides module(platform:el8) needed by module python36:3.6:8100020250603161425:5ae887d0.x86_64 from @modulefailsafe
Problem 6: conflicting requests

nothing provides module(platform:el8) needed by module python38:3.8:8090020230810162531:71b83295.x86_64 from @modulefailsafe

Dependencies resolved.

Package                                           Architecture                                Version                                                           Repository                                   Size

Upgrading:
dnstop                                            x86_64                                      20140915-24.git20240708.el9                                       epel                                         52 k
epel-release                                      noarch                                      9-10.el9                                                          epel                                         19 k
htop                                              x86_64                                      3.3.0-1.el9                                                       epel                                        198 k
isl                                               x86_64                                      0.16.1-15.el9                                                     epel                                        864 k
libmetalink                                       x86_64                                      0.1.3-24.el9                                                      epel                                         33 k
ncdu                                              x86_64                                      1.22-1.el9                                                        epel                                         62 k
trousers                                          x86_64                                      0.3.15-5.el9                                                      epel                                        144 k
trousers-lib                                      x86_64                                      0.3.15-5.el9                                                      epel                                        165 k
Installing dependencies:
hwloc-libs                                        x86_64                                      2.4.1-5.el9                                                       baseos                                      2.1 M

Transaction Summary

Install  1 Package
Upgrade  8 Packages

Total download size: 3.6 M
Is this ok [y/N]: y
```

How I can fix this?
and I see this too
[code]
sudo dnf update -y
warning: Signature not supported. Hash algorithm SHA1 not available.
Last metadata expiration check: 0:01:20 ago on Sun 16 Nov 2025 02:57:13 PM +0330.
Dependencies resolved.
Nothing to do.
Complete!
[/code]

2

@mostafa As you know, the procedure you attempted to use is NOT supported by the Rocky Linux team. The only supported move from 8 to 9 is a clean install and a restore of a data backup. You can use this procedure to do exactly that. There is no supported tool or method to move directly from version 8 to 9.

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