How to Migrate CentOS 7 to AlmaLinux 8
Upgrade CentOS 7 to latest version with
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yum update -y |
Reboot the server
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reboot |
Install elevate repo rpm file
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yum install -y http://repo.almalinux.org/elevate/elevate-release-latest-el$(rpm --eval %rhel).noarch.rpm |
Install leapp
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yum install -y leapp-upgrade leapp-data-almalinux |
Run pre upgrade check
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leapp preupgrade |
After the preupgrade script run, it will generate a log file /var/log/leapp/leapp-report.txt, you need to fix any problems reported in this file.
On CentOS 7, you need to run these 2 commands as they will cause upgrade blocking.
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rmmod pata_acpi leapp answer --section remove_pam_pkcs11_module_check.confirm=True |
Run the upgrade
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leapp upgrade |
During the upgrade, server will reboot itself. This process can take a while to finish. Don’t interrupt the process or you will end up with non working server.
Once the upgrade process is finished, reboot the server.
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reboot |