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check tcp_available_congestion_control, if BBR has been installed, skipped installation;
check kernel version at first, if kernel version is greater than 4.9, directly setting TCP BBR.

Signed-off-by: Teddysun <i@teddysun.com>
This commit is contained in:
Teddysun 2017-10-28 12:10:43 +09:00
parent bc1fb1fa53
commit b2b6aaab1c
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GPG Key ID: 09BD4C080AD6C46D
1 changed files with 50 additions and 22 deletions
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62
bbr.sh
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@ -14,6 +14,8 @@ 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:${plain} Your VPS is based on OpenVZ, not be supported." && exit 1
@ -99,12 +101,21 @@ centosversion() {
check_bbr_status() {
local param=$(sysctl net.ipv4.tcp_available_congestion_control | awk '{print $3}')
if uname -r | grep -Eqi "4.10."; then
if [[ "${param}" == "bbr" ]]; then
return 0
else
return 1
fi
}
version_ge(){
test "$(echo "$@" | tr " " "\n" | sort -rV | head -n 1)" == "$1"
}
check_kernel_version() {
local kernel_version=$(uname -r | cut -d- -f1)
if version_ge ${kernel_version} 4.9; then
return 0
else
return 1
fi
@ -131,6 +142,14 @@ install_elrepo() {
fi
}
sysctl_config() {
sed -i '/net.core.default_qdisc/d' /etc/sysctl.conf
sed -i '/net.ipv4.tcp_congestion_control/d' /etc/sysctl.conf
echo "net.core.default_qdisc = fq" >> /etc/sysctl.conf
echo "net.ipv4.tcp_congestion_control = bbr" >> /etc/sysctl.conf
sysctl -p >/dev/null 2>&1
}
install_config() {
if [[ "${release}" == "centos" ]]; then
if centosversion 6; then
@ -149,20 +168,34 @@ install_config() {
elif [[ "${release}" == "debian" || "${release}" == "ubuntu" ]]; then
/usr/sbin/update-grub
fi
}
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
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:${plain} TCP BBR has been successfully installed. nothing to do..."
exit
echo -e "${green}Info:${plain} TCP BBR has 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:${plain} Setting TCP BBR completed..."
exit 0
fi
if [[ "${release}" == "centos" ]]; then
@ -189,8 +222,11 @@ install_bbr() {
fi
install_config
sysctl_config
reboot_os
}
clear
echo "---------- System Information ----------"
echo " OS : $opsy"
@ -205,12 +241,4 @@ echo
echo "Press any key to start...or Press Ctrl+C to cancel"
char=`get_char`
install_bbr
echo
read -p "Info: The system needs to be restart. Do you want to reboot? [y/n]" is_reboot
if [[ ${is_reboot} == "y" || ${is_reboot} == "Y" ]]; then
reboot
else
exit
fi
install_bbr 2>&1 | tee ${cur_dir}/install_bbr.log