View kernel
uname -r
Set kernel source
Mainly http://elrepo.org/tiki/tiki-index.php
The ELRepo warehouse is a community-based Enterprise Linux warehouse that provides support for Red Hat Enterprise (RHEL) and other RHEL based Linux distributions (CentOS, Scientific, Fedora, etc.).
ELRepo focuses on software packages related to hardware, including file system driver, video card driver, network driver, sound card driver and camera driver.
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
rpm -Uvh https://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm
View available system kernel packages
yum --disablerepo="*" --enablerepo="elrepo-kernel" list available
4.4 and 5.0 can be used
Loaded plugins: fastestmirror Loading mirror speeds from cached hostfile * elrepo-kernel: hkg.mirror.rackspace.com elrepo-kernel | 2.9 kB 00:00:00 elrepo-kernel/primary_db | 1.8 MB 00:00:00 Available Packages kernel-lt.x86_64 4.4.176-1.el7.elrepo elrepo-kernel kernel-lt-devel.x86_64 4.4.176-1.el7.elrepo elrepo-kernel kernel-lt-doc.noarch 4.4.176-1.el7.elrepo elrepo-kernel kernel-lt-headers.x86_64 4.4.176-1.el7.elrepo elrepo-kernel kernel-lt-tools.x86_64 4.4.176-1.el7.elrepo elrepo-kernel kernel-lt-tools-libs.x86_64 4.4.176-1.el7.elrepo elrepo-kernel kernel-lt-tools-libs-devel.x86_64 4.4.176-1.el7.elrepo elrepo-kernel kernel-ml.x86_64 5.0.3-1.el7.elrepo elrepo-kernel kernel-ml-devel.x86_64 5.0.3-1.el7.elrepo elrepo-kernel kernel-ml-doc.noarch 5.0.3-1.el7.elrepo elrepo-kernel kernel-ml-headers.x86_64 5.0.3-1.el7.elrepo elrepo-kernel kernel-ml-tools.x86_64 5.0.3-1.el7.elrepo elrepo-kernel kernel-ml-tools-libs.x86_64 5.0.3-1.el7.elrepo elrepo-kernel kernel-ml-tools-libs-devel.x86_64 5.0.3-1.el7.elrepo elrepo-kernel perf.x86_64 5.0.3-1.el7.elrepo elrepo-kernel python-perf.x86_64 5.0.3-1.el7.elrepo
Install the latest kernel
yum --enablerepo=elrepo-kernel install kernel-ml
Setting kernel
Update kernel
grub2-mkconfig -o /boot/grub2/grub.cfg
output
Generating grub configuration file ... Found linux image: /boot/vmlinuz-5.0.3-1.el7.elrepo.x86_64 Found initrd image: /boot/initramfs-5.0.3-1.el7.elrepo.x86_64.img Found linux image: /boot/vmlinuz-3.10.0-957.10.1.el7.x86_64 Found initrd image: /boot/initramfs-3.10.0-957.10.1.el7.x86_64.img Found linux image: /boot/vmlinuz-3.10.0-957.el7.x86_64 Found initrd image: /boot/initramfs-3.10.0-957.el7.x86_64.img Found linux image: /boot/vmlinuz-0-rescue-5167da7ac6324a6ab3e83847762d2dec Found initrd image: /boot/initramfs-0-rescue-5167da7ac6324a6ab3e83847762d2dec.img done
View system kernel
cat /boot/grub2/grub.cfg |grep menuentry
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
menuentry_id_option=""
export menuentry_id_option
menuentry 'CentOS Linux (5.0.3-1.el7.elrepo.x86_64) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-5.0.3-1.el7.elrepo.x86_64-advanced-56e38f49-df2a-4a33-833f-90b308aa61de' {
menuentry 'CentOS Linux (3.10.0-957.10.1.el7.x86_64) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-3.10.0-957.10.1.el7.x86_64-advanced-56e38f49-df2a-4a33-833f-90b308aa61de' {
menuentry 'CentOS Linux (3.10.0-957.el7.x86_64) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-3.10.0-957.el7.x86_64-advanced-56e38f49-df2a-4a33-833f-90b308aa61de' {
menuentry 'CentOS Linux (0-rescue-5167da7ac6324a6ab3e83847762d2dec) 7 (Core)' --class centos --class gnu-linux --class gnu --class os --unrestricted $menuentry_id_option 'gnulinux-0-rescue-5167da7ac6324a6ab3e83847762d2dec-advanced-56e38f49-df2a-4a33-833f-90b308aa61de' {
Setting kernel
Copy the kernel CentOS Linux (5.0.3-1.el7.elrepo.x86_) 7 (core) to be set first
Set default kernel
grub2-set-default "CentOS Linux (5.0.3-1.el7.elrepo.x86_64) 7 (Core)"
Verification
grub2-editenv list
Reset computer
reboot
Verify kernel
uname -r
output
5.0.3-1.el7.elrepo.x86_64
Reference resources
http://elrepo.org/tiki/tiki-index.php
https://blog.csdn.net/kikajack/article/details/79396793
https://blog.csdn.net/cacacai/article/details/79727218