Created
February 13, 2022 19:08
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Commands to live-upgrade CentOS Streams 8 -> 9
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| # The general procedure here is adapted from the 7->8 guide here. https://www.tecmint.com/upgrade-centos-7-to-centos-8/ | |
| # | |
| # It is a curated list of my bash history. I entered other commands so hopefully I got the right ones here. | |
| yum upgrade | |
| reboot | |
| dnf install epel-release | |
| dnf install rpmconf | |
| dnf install yum-utils | |
| rpmconf -a # answer "n" to both things | |
| package-cleanup --leaves | |
| package-cleanup --orphans | |
| dnf install http://mirror.stream.centos.org/9-stream/BaseOS/x86_64/os/Packages/centos-stream-repos-9.0-9.el9.noarch.rpm http://mirror.stream.centos.org/9-stream/BaseOS/x86_64/os/Packages/centos-stream-release-9.0-9.el9.noarch.rpm http://mirror.stream.centos.org/9-stream/BaseOS/x86_64/os/Packages/centos-gpg-keys-9.0-9.el9.noarch.rpm | |
| curl -O https://dl.fedoraproject.org/pub/epel/epel-release-latest-9.noarch.rpm | |
| curl -O https://dl.fedoraproject.org/pub/epel/epel-next-release-latest-9.noarch.rpm | |
| rpm -Uvh *.rpm | |
| yum update | |
| dnf clean all | |
| rpm -e `rpm -q kernel` | |
| dnf -y --releasever=9 --allowerasing --setopt=deltarpm=false distro-sync | |
| dnf clean all | |
| reboot | |
| rm -f /var/lib/rpm/__db* | |
| rpm --rebuilddb | |
| dnf -y groupupdate "Core" "Minimal Install" |
Thanks, It's not exactly the configuration I used but it was interresting.
If i can i will commit a Fork wen I will finished my configuration :)
just a note guys those releases dont exist on the CENTOS website anymore(9.09) ... the updated command is...
dnf install http://mirror.stream.centos.org/9-stream/BaseOS/x86_64/os/Packages/centos-stream-repos-9.0-26.el9.noarch.rpm http://mirror.stream.centos.org/9-stream/BaseOS/x86_64/os/Packages/centos-stream-release-9.0-26.el9.noarch.rpm http://mirror.stream.centos.org/9-stream/BaseOS/x86_64/os/Packages/centos-gpg-keys-9.0-26.el9.noarch.rpm
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In my case this left me without a grub entry pointing to a working kernel so after the reboot grub2 failed to find a working kernel. I was able to boot off a centos iso and rescue the system to get it mounted. Then installed the iso's kernel rpm into the mounted root. Then chroot to the mounted root and performed a grub2-mkconfig. That got me a working kernel and config. Once that was all done the reboot bought me back into a working system where these steps finished cleanly. So maybe before the reboot there should be an attempt to dnf install kernel? then a grub2-mkconfig to ensure grub's configs are updated to target that new kernel.