Add support for RHEL 9

[rbo]

• Provide/Create RHEL 9 Image & documentation for hetzner servers
• Test hetzner-ocp4 Playbooks

[rbo]

Tried to create an image based on https://keithtenzer.com/cloud/how-to-create-a-rhel-8-image-for-hetzner-root-servers/

After creating an image and installation if failed, there is still the device uuid 432d61fd-26f4-... in /boot and /etc in use. It looks like the installer doesn't cleanup / replaced it very well.

My current steps for image creation:

Install RHEL 9 minimal, custom partitioning without lvm.

Run those commands:

ln -s /usr/bin/dracut /sbin/dracut
dnf install -y mdadm lvm2
subscription-manager remove --all
cd /
tar cJvf CentOS-80-stream-amd64-base.tar.xz --exclude=/dev \
--exclude=/proc --exclude=/sys --exclude=/CentOS-75-el-x86_64-minimal.tar.xz /

An RHEL 9 installation via KVM & ISO was successful.

[rbo]

RHEL 9 use UUID in /proc/cmdline:

[root@localhost ~]# cat /proc/cmdline
BOOT_IMAGE=(hd0,msdos1)/vmlinuz-5.14.0-70.13.1.el9_0.x86_64 root=UUID=432d61fd-26f4-4bdb-88e0-f2102afe4896 ro crashkernel=1G-4G:192M,4G-64G:256M,64G-:512M resume=UUID=53131161-305c-4b25-a593-7a61c8c67c83

RHEL 8 use /dev/... in /proc/cmdline:

[root@pluto ~]# cat /proc/cmdline
BOOT_IMAGE=(mduuid/55d7f37f319423e94927c2cd4080443d)/vmlinuz-4.18.0-147.el8.x86_64 root=/dev/mapper/vg0-root ro biosdevname=0 crashkernel=auto nomodeset rd.auto=1 consoleblank=0
[root@pluto ~]#

[rbo]

Error message at rhel 9 boot, reproduced via libvirt

rdsosreport.txt

[lucamaf]

will upgrading from rhel8 to rhel9 work on a working installation?

[rbo]

@lucamaf never tested, it's possible to upgrade an installation from rhel8 to rhel9? Shame on me I'm not a rhel expert.

[lucamaf]

Is there any network-script included in the current configuration? or any python2 library ? cause those 2 things might be the only preventing a correct upgrade. I would assume RHEV should be working without any major difference between RHEL8 and RHEL9

…

On Fri, Jul 22, 2022 at 10:09 AM Robert Bohne ***@***.***> wrote: @lucamaf <https://github.com/lucamaf> never tested, it's possible to upgrade an installation from rhel8 to rhel9? Shame on me I'm not a rhel expert. — Reply to this email directly, view it on GitHub <#219 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AANFTI2NZTWUNG4DOHUUEYDVVJJK5ANCNFSM5YCMZ5CQ> . You are receiving this because you were mentioned.Message ID: ***@***.***>

-- LUCA MATTIA FERRARI EMEA SENIOR EDGE SOLUTION ARCHITECT, ITILV3 Red Hat Spain <https://www.redhat.com/> travessera de Gracia, 11 08021, Barcelona ***@***.*** M: +34-653-225-181 <http://redhatemailsignature-marketing.itos.redhat.com/> <https://red.ht/sig>

[rbo]

What? I'm lost... RHEV? hetzner-ocp4 use plain kvm. no ovirt no rhev just kvm.

[lucamaf]

sorry, just meant kvm (got confused for a second)

…

On Fri, Jul 22, 2022 at 11:56 AM Robert Bohne ***@***.***> wrote: What? I'm lost... RHEV? hetzner-ocp4 use plain kvm. no ovirt no rhev just kvm. — Reply to this email directly, view it on GitHub <#219 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AANFTIZW3NLC422OF327K53VVJV5JANCNFSM5YCMZ5CQ> . You are receiving this because you were mentioned.Message ID: ***@***.***>

-- LUCA MATTIA FERRARI EMEA SENIOR EDGE SOLUTION ARCHITECT, ITILV3 Red Hat Spain <https://www.redhat.com/> travessera de Gracia, 11 08021, Barcelona ***@***.*** M: +34-653-225-181 <http://redhatemailsignature-marketing.itos.redhat.com/> <https://red.ht/sig>

[kborup-redhat]

Lucamaf yes you can update to RHEL 9 from RHEL 8

[rbo]

Lucamaf yes you can update to RHEL 9 from RHEL 8

@kborup-redhat Do you have any how-to / information for us?

[rbo]

Added base image introduction with #234 - thanks to @knumskull