sudo leapp upgrade

Shouldn’t this command be “preupgrade” instead?

This upgrade will be transparent for our workloads in docker? I was playing to deploy a new VM with Rocky and then export/import all related to docker but if we could upgrade easily with this tool I would go with the elevated project!!

Regards!
Ivan

Hi Ravi,

Many thanks for your answer.

After reflection, I decided to stop the migration from the current Centos 7 server to 8 and install it on new hardware, Alma or Rocky OS, and gradually migrate my applications and services to the new server. A solution that is certainly more restrictive but less risky in terms of the availability of the existing system!

I admit that I was somewhat careless in my first approach, thinking that the migration process was proven and not very risky!

I want to stabilize my current centos 7 and be able to return from the Steps ( steps from the tecmint update process) already completed since my previous status:

Here is my partial process migration :

sudo rpmconf -a
sudo package-cleanup --leaves
sudo package-cleanup --orphans
dnf  remove yum yum-metadata-parser
sudo dnf  remove yum yum-metadata-parser
sudo rm -rf /etc/yum
sudo dnf --best --alloweraqsing  upgrade https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm
sudo dnf install http://vault.centos.org/8.5.2111/BaseOS/x86_64/os/Packages/{centos-linux-repos-8-3.el8.noarch.rpm,centos-linux-release-8.5-1.2111.el8.noarch.rpm,centos-gpg-keys-8-3.el8.noarch.rpm}

Yum is removed and naturally, the old epel release and repository are replaced by a new depository! ( I use the dnf command from many years ago).

Have you any idea how to downgrade the partial process recover precedent centos 7, and recover the correct repository and centos 7 references from /etc/redhat-release and /etc/os-release and others:?

I greatly appreciate your help!
Best regards Ravi
Henri

@Henri,

The error you’re encountering shows that there are missing dependencies for the installed kernel version. To resolve this issue, you can follow these general steps:

First, update all packages, or specifically target the ones mentioned in the error message:

sudo yum update
sudo yum update hypervvssd hypervfcopyd hypervkvpd kmod-kvdo

If updating the kernel and dependencies doesn’t resolve the issue, you may need to reinstall the problematic packages.

sudo yum reinstall hypervvssd hypervfcopyd hypervkvpd kmod-kvdo

After following these steps, the dependencies should be resolved.

I initiated the intermediate update of my centos7 Kernel:3.10.0-1160.102.1.el7.x86_64 to centos 8. My choice of migrating to Stream or RokyLinux has not yet been decided!

Process ok until the command: "sudo rpm -e `rpm -q kernel`"

I’m getting messages from publishers that are not very encouraging!

" error: Failed dependencies:
kernel >= 3.10.0-384.el7 is needed by (installed) hypervvssd-0-0.34.20180415git.el7.x86_64
kernel >= 3.10.0-384.el7 is needed by (installed) hypervfcopyd-0-0.34.20180415git.el7.x86_64
kernel >= 3.10.0-384.el7 is needed by (installed) hypervkvpd-0-0.34.20180415git.el7.x86_64
kernel >= 3.10.0-1133.el7 is needed by (installed) kmod-kvdo-6.1.3.23-5.el7.x86_64 ....
kernel(wake_up_process) = 0xe65cdceb is needed by (installed) kmod-kvdo-6.1 .3.23-5.el7.x86_64
kernel(yield) = 0x760a0f4f is needed by (installed) kmod-kvdo-6.1.3.23-5.el7.x86_64"

Here versioning state:

cat /etc/redhat-release

CentOS Linux release 8.5.2111

[root@alpha yum.repos.d]# cat /etc/os-release

NAME="CentOS Linux"
VERSION="8"
ID="centos"
ID_LIKE="rhel fedora"
VERSION_ID="8"
PLATFORM_ID="platform:el8"
PRETTY_NAME="CentOS Linux 8"
ANSI_COLOR="0;31"
CPE_NAME="cpe:/o:centos:centos:8"
HOME_URL="https://centos.org/"
BUG_REPORT_URL="https://bugs.centos.org/"
CENTOS_MANTISBT_PROJECT="CentOS-8"
CENTOS_MANTISBT_PROJECT_VERSION="8"

Any suggestions would be appreciated
Thanks in advance
Regards
Henri-Laurent