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bbr.sh
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bbr.sh
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#!/usr/bin/env bash
#
# Auto install latest kernel for TCP BBR
#
# System Required: CentOS 6+, Debian7+, Ubuntu12+
#
# Copyright (C) 2016-2018 Teddysun <[email protected]>
#
# URL: https://teddysun.com/489.html
#
red='\033[0;31m'
green='\033[0;32m'
yellow='\033[0;33m'
plain='\033[0m'
cur_dir=$(pwd)
[[ $EUID -ne 0 ]] && echo -e "${red}Error:${plain} This script must be run as root!" && exit 1
[[ -d "/proc/vz" ]] && echo -e "${red}Error:${plain} Your VPS is based on OpenVZ, which is not supported." && exit 1
if [ -f /etc/redhat-release ]; then
release="centos"
elif cat /etc/issue | grep -Eqi "debian"; then
release="debian"
elif cat /etc/issue | grep -Eqi "ubuntu"; then
release="ubuntu"
elif cat /etc/issue | grep -Eqi "centos|red hat|redhat"; then
release="centos"
elif cat /proc/version | grep -Eqi "debian"; then
release="debian"
elif cat /proc/version | grep -Eqi "ubuntu"; then
release="ubuntu"
elif cat /proc/version | grep -Eqi "centos|red hat|redhat"; then
release="centos"
else
release=""
fi
is_digit(){
local input=${1}
if [[ "$input" =~ ^[0-9]+$ ]]; then
return 0
else
return 1
fi
}
is_64bit(){
if [ $(getconf WORD_BIT) = '32' ] && [ $(getconf LONG_BIT) = '64' ]; then
return 0
else
return 1
fi
}
get_valid_valname(){
local val=${1}
local new_val=$(eval echo $val | sed 's/[-.]/_/g')
echo ${new_val}
}
get_hint(){
local val=${1}
local new_val=$(get_valid_valname $val)
eval echo "\$hint_${new_val}"
}
#Display Memu
display_menu(){
local soft=${1}
local default=${2}
eval local arr=(\${${soft}_arr[@]})
local default_prompt
if [[ "$default" != "" ]]; then
if [[ "$default" == "last" ]]; then
default=${#arr[@]}
fi
default_prompt="(default ${arr[$default-1]})"
fi
local pick
local hint
local vname
local prompt="which ${soft} you'd select ${default_prompt}: "
while :
do
echo -e "\n------------ ${soft} setting ------------\n"
for ((i=1;i<=${#arr[@]};i++ )); do
vname="$(get_valid_valname ${arr[$i-1]})"
hint="$(get_hint $vname)"
[[ "$hint" == "" ]] && hint="${arr[$i-1]}"
echo -e "${green}${i}${plain}) $hint"
done
echo
read -p "${prompt}" pick
if [[ "$pick" == "" && "$default" != "" ]]; then
pick=${default}
break
fi
if ! is_digit "$pick"; then
prompt="Input error, please input a number"
continue
fi
if [[ "$pick" -lt 1 || "$pick" -gt ${#arr[@]} ]]; then
prompt="Input error, please input a number between 1 and ${#arr[@]}: "
continue
fi
break
done
eval ${soft}=${arr[$pick-1]}
vname="$(get_valid_valname ${arr[$pick-1]})"
hint="$(get_hint $vname)"
[[ "$hint" == "" ]] && hint="${arr[$pick-1]}"
echo -e "\nyour selection: $hint\n"
}
version_ge(){
test "$(echo "$@" | tr " " "\n" | sort -rV | head -n 1)" == "$1"
}
get_latest_version() {
latest_version=($(wget -qO- https://kernel.ubuntu.com/~kernel-ppa/mainline/ | awk -F'\"v' '/v[4-9]./{print $2}' | cut -d/ -f1 | grep -v - | sort -V))
[ ${#latest_version[@]} -eq 0 ] && echo -e "${red}Error:${plain} Get latest kernel version failed." && exit 1
kernel_arr=()
for i in ${latest_version[@]}; do
if version_ge $i 4.14; then
kernel_arr+=($i);
fi
done
display_menu kernel last
if [[ `getconf WORD_BIT` == "32" && `getconf LONG_BIT` == "64" ]]; then
deb_name=$(wget -qO- https://kernel.ubuntu.com/~kernel-ppa/mainline/v${kernel}/ | grep "linux-image" | grep "generic" | awk -F'\">' '/amd64.deb/{print $2}' | cut -d'<' -f1 | head -1)
deb_kernel_url="https://kernel.ubuntu.com/~kernel-ppa/mainline/v${kernel}/${deb_name}"
deb_kernel_name="linux-image-${kernel}-amd64.deb"
modules_deb_name=$(wget -qO- https://kernel.ubuntu.com/~kernel-ppa/mainline/v${kernel}/ | grep "linux-modules" | grep "generic" | awk -F'\">' '/amd64.deb/{print $2}' | cut -d'<' -f1 | head -1)
deb_kernel_modules_url="https://kernel.ubuntu.com/~kernel-ppa/mainline/v${kernel}/${modules_deb_name}"
deb_kernel_modules_name="linux-modules-${kernel}-amd64.deb"
else
deb_name=$(wget -qO- https://kernel.ubuntu.com/~kernel-ppa/mainline/v${kernel}/ | grep "linux-image" | grep "generic" | awk -F'\">' '/i386.deb/{print $2}' | cut -d'<' -f1 | head -1)
deb_kernel_url="https://kernel.ubuntu.com/~kernel-ppa/mainline/v${kernel}/${deb_name}"
deb_kernel_name="linux-image-${kernel}-i386.deb"
modules_deb_name=$(wget -qO- https://kernel.ubuntu.com/~kernel-ppa/mainline/v${kernel}/ | grep "linux-modules" | grep "generic" | awk -F'\">' '/i386.deb/{print $2}' | cut -d'<' -f1 | head -1)
deb_kernel_modules_url="https://kernel.ubuntu.com/~kernel-ppa/mainline/v${kernel}/${modules_deb_name}"
deb_kernel_modules_name="linux-modules-${kernel}-i386.deb"
fi
[ -z ${deb_name} ] && echo -e "${red}Error:${plain} Getting Linux kernel binary package name failed, maybe kernel build failed. Please choose other one and try again." && exit 1
}
get_opsy() {
[ -f /etc/redhat-release ] && awk '{print ($1,$3~/^[0-9]/?$3:$4)}' /etc/redhat-release && return
[ -f /etc/os-release ] && awk -F'[= "]' '/PRETTY_NAME/{print $3,$4,$5}' /etc/os-release && return
[ -f /etc/lsb-release ] && awk -F'[="]+' '/DESCRIPTION/{print $2}' /etc/lsb-release && return
}
opsy=$( get_opsy )
arch=$( uname -m )
lbit=$( getconf LONG_BIT )
kern=$( uname -r )
get_char() {
SAVEDSTTY=`stty -g`
stty -echo
stty cbreak
dd if=/dev/tty bs=1 count=1 2> /dev/null
stty -raw
stty echo
stty $SAVEDSTTY
}
getversion() {
if [[ -s /etc/redhat-release ]]; then
grep -oE "[0-9.]+" /etc/redhat-release
else
grep -oE "[0-9.]+" /etc/issue
fi
}
centosversion() {
if [ x"${release}" == x"centos" ]; then
local code=$1
local version="$(getversion)"
local main_ver=${version%%.*}
if [ "$main_ver" == "$code" ]; then
return 0
else
return 1
fi
else
return 1
fi
}
check_bbr_status() {
local param=$(sysctl net.ipv4.tcp_congestion_control | awk '{print $3}')
if [[ x"${param}" == x"bbr" ]]; then
return 0
else
return 1
fi
}
check_kernel_version() {
local kernel_version=$(uname -r | cut -d- -f1)
if version_ge ${kernel_version} 4.9; then
return 0
else
return 1
fi
}
install_elrepo() {
if centosversion 5; then
echo -e "${red}Error:${plain} not supported CentOS 5."
exit 1
fi
rpm --import https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
if centosversion 6; then
rpm -Uvh https://www.elrepo.org/elrepo-release-6-8.el6.elrepo.noarch.rpm
elif centosversion 7; then
rpm -Uvh https://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm
fi
if [ ! -f /etc/yum.repos.d/elrepo.repo ]; then
echo -e "${red}Error:${plain} Install elrepo failed, please check it."
exit 1
fi
}
sysctl_config() {
sed -i '/net.core.default_qdisc/d' /etc/sysctl.conf
sed -i '/net.ipv4.tcp_congestion_control/d' /etc/sysctl.conf
echo "net.core.default_qdisc = fq" >> /etc/sysctl.conf
echo "net.ipv4.tcp_congestion_control = bbr" >> /etc/sysctl.conf
sysctl -p >/dev/null 2>&1
}
install_config() {
if [[ x"${release}" == x"centos" ]]; then
if centosversion 6; then
if [ ! -f "/boot/grub/grub.conf" ]; then
echo -e "${red}Error:${plain} /boot/grub/grub.conf not found, please check it."
exit 1
fi
sed -i 's/^default=.*/default=0/g' /boot/grub/grub.conf
elif centosversion 7; then
if [ ! -f "/boot/grub2/grub.cfg" ]; then
echo -e "${red}Error:${plain} /boot/grub2/grub.cfg not found, please check it."
exit 1
fi
grub2-set-default 0
fi
elif [[ x"${release}" == x"debian" || x"${release}" == x"ubuntu" ]]; then
/usr/sbin/update-grub
fi
}
reboot_os() {
echo
echo -e "${green}Info:${plain} The system needs to reboot."
read -p "Do you want to restart system? [y/n]" is_reboot
if [[ ${is_reboot} == "y" || ${is_reboot} == "Y" ]]; then
reboot
else
echo -e "${green}Info:${plain} Reboot has been canceled..."
exit 0
fi
}
install_bbr() {
check_bbr_status
if [ $? -eq 0 ]; then
echo
echo -e "${green}Info:${plain} TCP BBR has already been installed. nothing to do..."
exit 0
fi
check_kernel_version
if [ $? -eq 0 ]; then
echo
echo -e "${green}Info:${plain} Your kernel version is greater than 4.9, directly setting TCP BBR..."
sysctl_config
echo -e "${green}Info:${plain} Setting TCP BBR completed..."
exit 0
fi
if [[ x"${release}" == x"centos" ]]; then
install_elrepo
[ ! "$(command -v yum-config-manager)" ] && yum install -y yum-utils > /dev/null 2>&1
[ x"$(yum-config-manager elrepo-kernel | grep -w enabled | awk '{print $3}')" != x"True" ] && yum-config-manager --enable elrepo-kernel > /dev/null 2>&1
if centosversion 6; then
if is_64bit; then
rpm_kernel_name="kernel-ml-4.18.20-1.el6.elrepo.x86_64.rpm"
rpm_kernel_devel_name="kernel-ml-devel-4.18.20-1.el6.elrepo.x86_64.rpm"
rpm_kernel_url_1="http://repos.lax.quadranet.com/elrepo/archive/kernel/el6/x86_64/RPMS/"
else
rpm_kernel_name="kernel-ml-4.18.20-1.el6.elrepo.i686.rpm"
rpm_kernel_devel_name="kernel-ml-devel-4.18.20-1.el6.elrepo.i686.rpm"
rpm_kernel_url_1="http://repos.lax.quadranet.com/elrepo/archive/kernel/el6/i386/RPMS/"
fi
rpm_kernel_url_2="https://dl.lamp.sh/files/"
wget -c -t3 -T60 -O ${rpm_kernel_name} ${rpm_kernel_url_1}${rpm_kernel_name}
if [ $? -ne 0 ]; then
rm -rf ${rpm_kernel_name}
wget -c -t3 -T60 -O ${rpm_kernel_name} ${rpm_kernel_url_2}${rpm_kernel_name}
fi
wget -c -t3 -T60 -O ${rpm_kernel_devel_name} ${rpm_kernel_url_1}${rpm_kernel_devel_name}
if [ $? -ne 0 ]; then
rm -rf ${rpm_kernel_devel_name}
wget -c -t3 -T60 -O ${rpm_kernel_devel_name} ${rpm_kernel_url_2}${rpm_kernel_devel_name}
fi
if [ -f "${rpm_kernel_name}" ]; then
rpm -ivh ${rpm_kernel_name}
else
echo -e "${red}Error:${plain} Download ${rpm_kernel_name} failed, please check it."
exit 1
fi
if [ -f "${rpm_kernel_devel_name}" ]; then
rpm -ivh ${rpm_kernel_devel_name}
else
echo -e "${red}Error:${plain} Download ${rpm_kernel_devel_name} failed, please check it."
exit 1
fi
rm -f ${rpm_kernel_name} ${rpm_kernel_devel_name}
elif centosversion 7; then
yum -y install kernel-ml kernel-ml-devel
if [ $? -ne 0 ]; then
echo -e "${red}Error:${plain} Install latest kernel failed, please check it."
exit 1
fi
fi
elif [[ x"${release}" == x"debian" || x"${release}" == x"ubuntu" ]]; then
[[ ! -e "/usr/bin/wget" ]] && apt-get -y update && apt-get -y install wget
echo -e "${green}Info:${plain} Getting latest kernel version..."
get_latest_version
if [ -n ${modules_deb_name} ]; then
wget -c -t3 -T60 -O ${deb_kernel_modules_name} ${deb_kernel_modules_url}
if [ $? -ne 0 ]; then
echo -e "${red}Error:${plain} Download ${deb_kernel_modules_name} failed, please check it."
exit 1
fi
fi
wget -c -t3 -T60 -O ${deb_kernel_name} ${deb_kernel_url}
if [ $? -ne 0 ]; then
echo -e "${red}Error:${plain} Download ${deb_kernel_name} failed, please check it."
exit 1
fi
[ -f ${deb_kernel_modules_name} ] && dpkg -i ${deb_kernel_modules_name}
dpkg -i ${deb_kernel_name}
rm -f ${deb_kernel_name} ${deb_kernel_modules_name}
else
echo -e "${red}Error:${plain} OS is not be supported, please change to CentOS/Debian/Ubuntu and try again."
exit 1
fi
install_config
sysctl_config
reboot_os
}
clear
echo "---------- System Information ----------"
echo " OS : $opsy"
echo " Arch : $arch ($lbit Bit)"
echo " Kernel : $kern"
echo "----------------------------------------"
echo " Auto install latest kernel for TCP BBR"
echo
echo " URL: https://teddysun.com/489.html"
echo "----------------------------------------"
echo
echo "Press any key to start...or Press Ctrl+C to cancel"
char=`get_char`
install_bbr 2>&1 | tee ${cur_dir}/install_bbr.log