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72 lines
1.7 KiB
72 lines
1.7 KiB
#!/bin/bash |
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##### 新系统初始化 ##### |
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#关闭selinux |
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function close_selinux() { |
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#临时关闭 |
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setenforce 0 |
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#永久关闭 |
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sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config |
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} |
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#同步时间 |
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function sync_time() { |
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echo '正在执行时间同步......' |
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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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#修改SSH端口 |
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function change_port() { |
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echo '正在修改SSH端口......' |
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config_file="/etc/ssh/sshd_config" |
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if grep -q "^Port" $config_file;then |
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sed -i "/^Port/c Port 1993" $config_file |
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else |
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echo "Port 1993" >> $config_file |
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fi |
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systemctl restart sshd |
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firewall-cmd --zone=public --add-port=1993/tcp --permanent |
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firewall-cmd --reload |
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echo 'SSH端口修改完毕......' |
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} |
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#安装BBR |
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function insrall_bbr() { |
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echo '正在安装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-lt -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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echo 'BBR安装完毕，10s后重启...' |
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#重启服务器 |
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reboot |
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} |
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close_selinux |
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sync_time |
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change_port |
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insrall_bbr |
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sleep 20 |
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echo 'test' |