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41 lines
1004 B
41 lines
1004 B
4 years ago
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#!/bin/bash
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##### 新系统初始化 #####
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#同步时间
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function sync_time() {
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yum -y install ntpdate
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#设置时区
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timedatectl set-local-rtc 1
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timedatectl set-timezone Asia/Shanghai
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#同步时间
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ntpdate -u pool.ntp.org
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ntpd=(`which ntpdate`)
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#定时任务
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echo "*/20 * * * * ${ntpd} pool.ntp.org > /dev/null 2>&1" >> /var/spool/cron/root
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systemctl reload crond
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echo "同步成功，当前时间:" `date`
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}
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#安装BBR
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function insrall_bbr() {
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yum -y install wget
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wget https://www.elrepo.org/RPM-GPG-KEY-elrepo.org
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rpm --import RPM-GPG-KEY-elrepo.org
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rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm
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#升级最新内核
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yum --enablerepo=elrepo-kernel install kernel-ml -y
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#设置最新内核
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grub2-set-default 0
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#写入配置文件
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echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf
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echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf
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#清理工作
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rm -rf RPM-GPG-KEY-elrepo.org bbr.sh
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#重启服务器
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reboot
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}
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sync_time
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insrall_bbr
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