Holla on this articel we will work you through on how to How to Migrate CentOS 7 to AlmaLinux 8, kindly follow the below guild carefully.
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yum update –y
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Reboot the server
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reboot
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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
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Install leapp
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yum install –y leapp–upgrade leapp–data–almalinux
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Run pre upgrade check
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leapp preupgrade
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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
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Run the upgrade
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leapp upgrade
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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
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