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100 lines
2.9 KiB
100 lines
2.9 KiB
2 years ago
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#!/bin/bash
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##### name:debian初始化脚本 #####
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##### author:xiaoz #####
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##### date:2022/08/18 #####
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#获取SSH端口
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ssh_port=$1
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#初始化软件
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init_soft(){
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echo '--------------------------------------------------------------';
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echo 'Install curl/wget and firewalld.'
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echo '--------------------------------------------------------------';
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#更新软件
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apt-get update
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#安装必要软件
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apt-get -y install curl wget
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apt-get -y install firewalld
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#启动firewalld
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systemctl start firewalld && systemctl enable firewalld
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#放行常见端口
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firewall-cmd --zone=public --add-port=80/tcp --permanent
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firewall-cmd --zone=public --add-port=443/tcp --permanent
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firewall-cmd --reload
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}
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#初始化SSH配置
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#修改端口和允许root登录
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init_ssh(){
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echo '--------------------------------------------------------------';
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echo 'Modifying SSH port.'
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echo '--------------------------------------------------------------';
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#先放行端口
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firewall-cmd --zone=public --add-port=${ssh_port}/tcp --permanent
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firewall-cmd --reload
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#修改ssh配置文件
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#修改SSH端口
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echo "Port ${ssh_port}" >> /etc/ssh/sshd_config
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#允许root登录
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echo 'PermitRootLogin yes' >> /etc/ssh/sshd_config
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#重启SSH服务
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systemctl restart sshd
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}
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#初始化时区
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init_timezone(){
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echo '--------------------------------------------------------------';
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echo 'Setting time zone.'
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echo '--------------------------------------------------------------';
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#设置时区为上海
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timedatectl set-timezone Asia/Shanghai
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#同步时间
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apt-get install ntpdate
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ntp_path=$(which ntpdate)
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#写入定时任务
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echo "${ntp_path} -u pool.ntp.org" >> /var/spool/cron/crontabs/root
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#重载定时任务
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/etc/init.d/cron reload
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}
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#设置虚拟内存，如果存在虚拟内存，则不设置
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set_swap() {
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echo '--------------------------------------------------------------';
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echo 'Setting swap.'
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echo '--------------------------------------------------------------';
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curl -s "https://raw.githubusercontent.com/helloxz/shell/master/set_swap.sh" | bash
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}
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#开启BBR
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enable_bbr(){
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echo '--------------------------------------------------------------';
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echo 'Enabling BBR.'
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echo '--------------------------------------------------------------';
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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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#使内核参数生效
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sysctl -p
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}
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#修改默认的描述符限制
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change_ulimit() {
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echo '--------------------------------------------------------------';
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echo 'Modifying ulimit.'
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echo '--------------------------------------------------------------';
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echo 'fs.file-max = 65535' >> /etc/sysctl.conf
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echo '* soft nofile 65535' >> /etc/security/limits.conf
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echo '* hard nofile 65535' >> /etc/security/limits.conf
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echo 'ulimit -SHn 65535' >> /etc/profile
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#使内核参数生效
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sysctl -p
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}
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#调用函数执行
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init_soft && init_ssh && init_timezone && set_swap && enable_bbr && change_ulimit
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