From 2029045a44301b511ec31e156e3cab278494b6d1 Mon Sep 17 00:00:00 2001
From: xiaoz <xiaoz93@outlook.com>
Date: Tue, 23 Aug 2022 10:15:31 +0800
Subject: [PATCH] add Init debian

---
 init_debian.sh | 100 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 100 insertions(+)
 create mode 100644 init_debian.sh

diff --git a/init_debian.sh b/init_debian.sh
new file mode 100644
index 0000000..f6c90e5
--- /dev/null
+++ b/init_debian.sh
@@ -0,0 +1,100 @@
+#!/bin/bash
+#####	name:debian初始化脚本	#####
+#####	author:xiaoz			#####
+#####	date:2022/08/18			#####
+
+#获取SSH端口
+ssh_port=$1
+
+#初始化软件
+init_soft(){
+	echo '--------------------------------------------------------------';
+	echo 'Install curl/wget and firewalld.'
+	echo '--------------------------------------------------------------';
+	#更新软件
+	apt-get update
+	#安装必要软件
+	apt-get -y install curl wget
+	apt-get -y install firewalld
+	#启动firewalld
+	systemctl start firewalld && systemctl enable firewalld
+	#放行常见端口
+	firewall-cmd --zone=public --add-port=80/tcp --permanent
+	firewall-cmd --zone=public --add-port=443/tcp --permanent
+	firewall-cmd --reload
+}
+
+#初始化SSH配置
+#修改端口和允许root登录
+init_ssh(){
+	echo '--------------------------------------------------------------';
+	echo 'Modifying SSH port.'
+	echo '--------------------------------------------------------------';
+	#先放行端口
+	firewall-cmd --zone=public --add-port=${ssh_port}/tcp --permanent
+	firewall-cmd --reload
+
+	#修改ssh配置文件
+	#修改SSH端口
+	echo "Port ${ssh_port}" >> /etc/ssh/sshd_config
+	#允许root登录
+	echo 'PermitRootLogin yes' >> /etc/ssh/sshd_config
+
+	#重启SSH服务
+	systemctl restart sshd
+}
+
+#初始化时区
+init_timezone(){
+	echo '--------------------------------------------------------------';
+	echo 'Setting time zone.'
+	echo '--------------------------------------------------------------';
+	#设置时区为上海
+	timedatectl set-timezone Asia/Shanghai
+	#同步时间
+	apt-get install ntpdate
+	ntp_path=$(which ntpdate)
+
+	#写入定时任务
+	echo "${ntp_path} -u pool.ntp.org" >> /var/spool/cron/crontabs/root
+	#重载定时任务
+	/etc/init.d/cron reload
+}
+
+#设置虚拟内存，如果存在虚拟内存，则不设置
+set_swap() {
+	echo '--------------------------------------------------------------';
+	echo 'Setting swap.'
+	echo '--------------------------------------------------------------';
+	curl -s "https://raw.githubusercontent.com/helloxz/shell/master/set_swap.sh" | bash
+}
+
+#开启BBR
+enable_bbr(){
+	echo '--------------------------------------------------------------';
+	echo 'Enabling BBR.'
+	echo '--------------------------------------------------------------';
+	#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
+
+	#使内核参数生效
+	sysctl -p
+}
+
+#修改默认的描述符限制
+change_ulimit() {
+	echo '--------------------------------------------------------------';
+	echo 'Modifying ulimit.'
+	echo '--------------------------------------------------------------';
+	echo 'fs.file-max = 65535' >> /etc/sysctl.conf
+	echo '* soft nofile 65535' >> /etc/security/limits.conf
+	echo '* hard nofile 65535' >> /etc/security/limits.conf
+	echo 'ulimit -SHn 65535' >> /etc/profile
+
+	#使内核参数生效
+	sysctl -p
+}
+
+#调用函数执行
+init_soft && init_ssh && init_timezone && set_swap && enable_bbr && change_ulimit
\ No newline at end of file