[리눅스] centos 8 stream upgrade

1. repo 주소 변경
   yum repolist로 확인

/etc/yum.repos.d/ 

-- baseurl를 로컬에 구성한 서버로 변경

   baseurl : 
[로컬서버IP]/repo/baseos/
[로컬서버IP]/repo/appstream/
[로컬서버IP]/repo/extras/
[로컬서버IP]/repo/extras-common/

2. 저장소 추가
-. dnf install epel-release

- /etc/yum.repos.d/ 아래에 epel.repo, epel-modular.repo baseurl 수정

[로컬서버IP]/repo/epel/
[로컬서버IP]/repo/epel-modular/

3. yum clean all

4. dnf update libmodulemd

5. dnf install centos-release-stream -y --allowerasing

6. dnf clean all

7. appstream, baseos, epel, epel-modular, extras, extras-common baseurl 수정

[로컬서버IP]/repo/baseos/
[로컬서버IP]/repo/appstream/
[로컬서버IP]/repo/extras/
[로컬서버IP]/repo/extras-common/

8. dnf clean all

9. dnf update -y

10. reboot

11. repo epel-next 추가 확인

[로컬서버IP]/repo/epel-next/

12. dnf clean all

13. dnf swap centos-{linux,stream}-repos

14. dnf install centos-release-stream

15. dnf distro-sync -y

16. reboot

17. cat /etc/redhat-release, uname -a