#yum update -y
只需要下载迁移脚本即可
#wget -c https://raw.githubusercontent.com/AlmaLinux/almalinux-deploy/master/almalinux-deploy.sh
#chmox +x almalinux-deploy.sh
//对于centos Stream迁移需要加上降级参数
#almalinux-deploy.sh --downgrade
#wget -c https://raw.githubusercontent.com/rocky-linux/rocky-tools/main/migrate2rocky/migrate2rocky.sh
#chmod +x migrate2rocky.sh