Centos7 源码编译安装linux longterm 内核4.19.47

首先去www.kernel.org下载新的内核，好比在我本次实际操做的时候 第4大版本的最新的longterm 版本为：4.19.47

 

安装用于编译的基础套件

yum groupinstall "Development Tools" -y 

 

安装其余须要的组件而且下载新内核源码包

yum install -y elfutils-libelf-devel bc openssl-devel ncurses-devel ntpdate vim net-tools;cd /root/下载;ntpdate -u times.aliyun.com;curl -O https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.19.47.tar.xz
tar -xf linux-4.19.47.tar.xz -C /usr/src/
cd /usr/src/linux-4.19.47/

 

拷贝老的config文件
cp /boot/config-4.4.180-2.el7.elrepo.x86_64 .config
sh -c 'yes "" | make oldconfig'

j4是说使用4个cpu内核来并行处理，应该符合真实的cpu最大内核数状况

make -j4 bzImage
make -j4 modules
make -j4 modules_install
make install
awk -F\' '$1=="menuentry " {print $2}' /etc/grub2.cfg

配置grub2新的默认内核项，从新启动

grub2-set-default 0 && init 6

检查新内核状况

uname -r

 

yum groupinstall "Development Tools" -y yum install -y elfutils-libelf-devel bc openssl-devel ncurses-devel ntpdate vim net-tools;cd /root/下载;ntpdate -u times.aliyun.com;curl -O https://cdn.kernel.org/pub/linux/kernel/v4.x/linux-4.19.47.tar.xztar -xf linux-4.19.47.tar.xz -C /usr/src/cd /usr/src/linux-4.19.47/cp /boot/config-4.4.180-2.el7.elrepo.x86_64 .configsh -c 'yes "" | make oldconfig'make -j4 bzImagemake -j4 modulesmake -j4 modules_installmake installawk -F\' '$1=="menuentry " {print $2}' /etc/grub2.cfggrub2-set-default 0 && init 6uname -r