커널 version 확인
# uname -sr
업데이트 진행
ELRepo repository 를 CentOS7 에 추가
# rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
# rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm
설치가능 커널목록 을 확인
# yum --disablerepo="*" --enablerepo="elrepo-kernel" list available
커널을 설치
# yum --enablerepo=elrepo-kernel install kernel-ml
# yum --enablerepo=elrepo-kernel install kernel-ml-devel
# yum --enablerepo=elrepo-kernel -y swap kernel-headers -- kernel-ml-headers
만약 위와 같이 설치하는 중에 glibc 등등의 이유로 설치가 완료되지 않는다면 다음과 같이 해보자.
# vi /etc/yum.repos.d/elrepo.repo
[elrepo]name=ELRepo.org Community Enterprise Linux Repository - el7baseurl=http://elrepo.org/linux/elrepo/el7/$basearch/ http://mirrors.coreix.net/elrepo/elrepo/el7/$basearch/ http://mirror.rackspace.com/elrepo/elrepo/el7/$basearch/ http://repos.lax-noc.com/elrepo/elrepo/el7/$basearch/ http://mirror.ventraip.net.au/elrepo/elrepo/el7/$basearch/mirrorlist=http://mirrors.elrepo.org/mirrors-elrepo.el7enabled=1gpgcheck=1gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-elrepo.orgprotect=0
[elrepo-testing]name=ELRepo.org Community Enterprise Linux Testing Repository - el7baseurl=http://elrepo.org/linux/testing/el7/$basearch/ http://mirrors.coreix.net/elrepo/testing/el7/$basearch/ http://mirror.rackspace.com/elrepo/testing/el7/$basearch/ http://repos.lax-noc.com/elrepo/testing/el7/$basearch/ http://mirror.ventraip.net.au/elrepo/testing/el7/$basearch/mirrorlist=http://mirrors.elrepo.org/mirrors-elrepo-testing.el7enabled=0gpgcheck=1gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-elrepo.orgprotect=0
[elrepo-kernel]name=ELRepo.org Community Enterprise Linux Kernel Repository - el7baseurl=http://elrepo.org/linux/kernel/el7/$basearch/ http://mirrors.coreix.net/elrepo/kernel/el7/$basearch/ http://mirror.rackspace.com/elrepo/kernel/el7/$basearch/ http://repos.lax-noc.com/elrepo/kernel/el7/$basearch/ http://mirror.ventraip.net.au/elrepo/kernel/el7/$basearch/mirrorlist=http://mirrors.elrepo.org/mirrors-elrepo-kernel.el7enabled=0gpgcheck=1gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-elrepo.orgprotect=0
[elrepo-extras]name=ELRepo.org Community Enterprise Linux Extras Repository - el7baseurl=http://elrepo.org/linux/extras/el7/$basearch/ http://mirrors.coreix.net/elrepo/extras/el7/$basearch/ http://mirror.rackspace.com/elrepo/extras/el7/$basearch/ http://repos.lax-noc.com/elrepo/extras/el7/$basearch/ http://mirror.ventraip.net.au/elrepo/extras/el7/$basearch/mirrorlist=http://mirrors.elrepo.org/mirrors-elrepo-extras.el7enabled=0gpgcheck=1gpgkey=file:///etc/pki/rpm-gpg/RPM-GPG-KEY-elrepo.orgprotect=0
# yum updqte
# yum --disablerepo="*" --enablerepo="elrepo-kernel" list available
# yum --enablerepo=elrepo-kernel -y swap kernel-headers -- kernel-ml-headers
아마도 설치가 완료가 될 것이다.
부팅 순서 변경
부팅 순서 확인
# grub2-editenv list
부팅커널 확인
# grep ^menuentry /boot/grub2/grub.cfg | cut -d "'" -f2
CentOS Linux (4.13.2-1.el7.elrepo.x86_64) 7 (Core)
CentOS Linux (3.10.0-693.2.2.el7.x86_64) 7 (Core)
CentOS Linux (3.10.0-514.26.2.el7.x86_64) 7 (Core)
CentOS Linux (0-rescue-99469085913545568c1e75ad9d37bd09) 7 (Core)# grep ^menuentry /boot/efi/EFI/centos/grub.cfg | cut -d "'" -f2
부팅커널 변경
# grub2-set-default "CentOS Linux (4.13.2-1.el7.elrepo.x86_64) 7 (Core)"
부팅 변경 확인
# grub2-editenv list
saved_entry=CentOS Linux (4.13.2-1.el7.elrepo.x86_64) 7 (Core)
재부팅 및 확인
# reboot
[root@ML350 ~]# uname -sr
Linux 4.13.2-1.el7.elrepo.x86_64