环境准备

基本yum源

  1. yum install -y epel-release 
  2. yum install -y wget bash-com*  git
  3. yum update -y
yum -y install  gcc bc gcc-c++ ncurses ncurses-devel cmake elfutils-libelf-devel openssl-devel flex* bison* autoconf automake zlib* fiex* libxml* ncurses-devel libmcrypt* libtool-ltdl-devel* make cmake  pcre pcre-devel openssl openssl-devel   jemalloc-devel tlc libtool vim unzip wget lrzsz bash-comp* ipvsadm ipset jq sysstat conntrack libseccomp conntrack-tools socat curl wget git conntrack-tools psmisc nfs-utils tree bash-completion conntrack libseccomp net-tools crontabs sysstat iftop nload strace bind-utils tcpdump htop telnet lsof

关闭防火墙，swap，selinux

#关闭防火墙
systemctl disable --now firewalld

#关闭swap
swapoff -a
sed -ri '/^[^#]*swap/s@^@#@' /etc/fstab

#关闭selinux
setenforce 0
sed -ri '/^[^#]*SELINUX=/s#=.+$#=disabled#' /etc/selinux/config

添加内核 4.19 yum源

cat > /etc/yum.repos.d/linnux-kernel.repo <<EOF
[kernel-longterm-4.19]
name=kernel-longterm-4.19
baseurl=https://copr-be.cloud.fedoraproject.org/results/kwizart/kernel-longterm-4.19/epel-7-x86_64/
enabled=1
gpgcheck=0
EOF

安装4.19内核

yum install  -y kernel-longterm kernel-longterm-devel kernel-longterm-modules-extra

网速慢可以直接使用rpm包
链接: https://pan.baidu.com/s/1kCW4nidYxBKWFMiWQvIvlg 提取码: q2iu

设置开机启动

查看系统上的所有可用内核 

awk -F\' '$1=="menuentry " {print i++ " : " $2}' /etc/grub2.cfg

image.png
将0设为开机启动

grub2-set-default 0

重启机器

reboot

检查

开机后检查

uname -r

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