mirror of https://github.com/helloxz/shell.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
58 lines
1.5 KiB
58 lines
1.5 KiB
#!/bin/bash |
|
##### 新系统初始化 ##### |
|
|
|
#同步时间 |
|
function sync_time() { |
|
echo '正在执行时间同步......' |
|
yum -y install ntpdate |
|
#设置时区 |
|
timedatectl set-local-rtc 1 |
|
timedatectl set-timezone Asia/Shanghai |
|
#同步时间 |
|
ntpdate -u pool.ntp.org |
|
ntpd=(`which ntpdate`) |
|
#定时任务 |
|
echo "*/20 * * * * ${ntpd} pool.ntp.org > /dev/null 2>&1" >> /var/spool/cron/root |
|
systemctl reload crond |
|
echo "同步成功，当前时间:" `date` |
|
} |
|
#修改SSH端口 |
|
function change_port() { |
|
echo '正在修改SSH端口......' |
|
config_file="/etc/ssh/sshd_config" |
|
if grep -q "^Port" $config_file;then |
|
sed -i "/^Port/c Port 1993" $config_file |
|
else |
|
echo "Port 1993" >> $config_file |
|
fi |
|
systemctl restart sshd |
|
firewall-cmd --zone=public --add-port=1993/tcp --permanent |
|
firewall-cmd --reload |
|
echo 'SSH端口修改完毕......' |
|
} |
|
#安装BBR |
|
function insrall_bbr() { |
|
echo '正在安装BBR......' |
|
yum -y install wget |
|
wget https://www.elrepo.org/RPM-GPG-KEY-elrepo.org |
|
rpm --import RPM-GPG-KEY-elrepo.org |
|
rpm -Uvh http://www.elrepo.org/elrepo-release-7.0-3.el7.elrepo.noarch.rpm |
|
|
|
#升级最新内核 |
|
yum --enablerepo=elrepo-kernel install kernel-ml -y |
|
#设置最新内核 |
|
grub2-set-default 0 |
|
|
|
#写入配置文件 |
|
echo "net.core.default_qdisc=fq" >> /etc/sysctl.conf |
|
echo "net.ipv4.tcp_congestion_control=bbr" >> /etc/sysctl.conf |
|
|
|
#清理工作 |
|
rm -rf RPM-GPG-KEY-elrepo.org bbr.sh |
|
echo 'BBR安装完毕，10s后重启...' |
|
#重启服务器 |
|
reboot |
|
} |
|
sync_time |
|
change_port |
|
insrall_bbr |