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AlmaLinuxに移行した方法

Posted at

CentOSは8はすでにサポートが終了しているし、今後他のも終了する予定なので、AlmaLinuxにOSを移行する。

まずは現在のOSのバージョン確認。

$ cat /etc/centos-release
CentOS Linux release 8.5.2111

AlmaLinuxへの移行

参考にしたのはこちら
以下のコマンドでダウンロードと実行を行う。

$ curl -O https://raw.githubusercontent.com/AlmaLinux/almalinux-deploy/master/almalinux-deploy.sh
$ sudo bash almalinux-deploy.sh

全て終わったら再起動。

$ sudo reboot

OSやカーネルの確認

ちゃんと移行できたかを確認する。

$ head /etc/*release
==> /etc/almalinux-release <==
AlmaLinux release 8.8 (Sapphire Caracal)

==> /etc/centos-release <==
AlmaLinux release 8.8 (Sapphire Caracal)

==> /etc/os-release <==
NAME="AlmaLinux"
VERSION="8.8 (Sapphire Caracal)"
ID="almalinux"
ID_LIKE="rhel centos fedora"
VERSION_ID="8.8"
PLATFORM_ID="platform:el8"
PRETTY_NAME="AlmaLinux 8.8 (Sapphire Caracal)"
ANSI_COLOR="0;34"
LOGO="fedora-logo-icon"
CPE_NAME="cpe:/o:almalinux:almalinux:8::baseos"

==> /etc/redhat-release <==
AlmaLinux release 8.8 (Sapphire Caracal)

==> /etc/system-release <==
AlmaLinux release 8.8 (Sapphire Caracal)

全てAlmaLinuxになっている。
CentOSはどうなったのだろうか?

# grubby --info=ALL | grep ^title
title="AlmaLinux (4.18.0-477.21.1.el8_8.x86_64) 8.8 (Sapphire Caracal)"
title="CentOS Linux (4.18.0-348.7.1.el8_5.x86_64) 8"
title="CentOS Linux (4.18.0-305.19.1.el8_4.x86_64) 8"
title="CentOS Linux (0-rescue-f45499ae913140a9beb740bdd3a78455) 8 (Core)"

# grubby --default-kernel
/boot/vmlinuz-4.18.0-477.21.1.el8_8.x86_64

# uname -r
4.18.0-477.21.1.el8_8.x86_64

一応残ってはいるらしい。
これでこちらの記事のエラーも出なくなった。

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