Cara upgrade Centos 7 ke Centos 8

Step by Step Preparing

1. Install EPL repository

   # yum install epel-release -y

2. Install yum-utils

   # yum install yum-utils

3. Resolves RPM package

   # yum install rpmconf
   # rpmconf -a

4. Clean up semua package

   # package-cleanup --leaves
   # package-cleanup --orphans

5. Install dnf di Centos 7

   # yum install dnf

6. Remove yum package Manager

   # dnf -y remove yum yum-metadata-parser
   # rm -Rf /etc/yum

7. Upgrading centos 7 ke 8

   # dnf upgrade

8. Install package centos 8

   dnf -y upgrade http://mirror.bytemark.co.uk/centos/8/BaseOS/x86_64/os/Packages/centos-release-8.0-0.1905.0.9.el8.x86_64.rpm

9. Upgrade EPEL repo

   dnf -y upgrade https://dl.fedoraproject.org/pub/epel/epel-release-latest-8.noarch.rpm

10. Remove temporary file

    # dnf clean all

11. Remove old kernel centos 7

    # rpm -e `rpm -q kernel`

12. Remove conflicting packages

    # rpm -e --nodeps sysvinit-tools

13. Jalankan system upgrade centos 8

    # dnf -y --releasever=8 --allowerasing --setopt=deltarpm=false distro-sync

14. Install kernel centos 8

    # dnf -y install kernel-core

15. Install minimal package centos 8

    # dnf -y groupupdate "Core" "Minimal Install"

16. Check versi centos

    # cat /etc/redhat-release