ruby 运维脚本 运维自动化脚本

一：ping ip

	#!/usr/bin/bash
	#this is test ip
	#owner by rocy 2020/9/21
	ip=10.9.62.124
	ping -c1 $ip &>/dev/null && echo"$ip is up" || echo "$ip is down"

二：ping ip if判断

	#！/usr/bin/bash
	#!/usr/bin/bash
	#this is test2 ip
	#by rocy 2020/9/21
	ip=10.9.62.124
	if ping -c1 $ip &>/dev/null ;then
	        echo "$ip is up"
	else
	        echo "$ip is down"
	fi

三：位置参数

	#!/bin/bash
	#!/usr/bin/bash
	echo 我的第一个参数是:$1
	echo 我的第二个参数是:$2 hahaha
	echo 我的第三个参数是:$3
	echo 我的第四个参数是:$4
	echo 一共有几个参数呢:$#

四：ping ip

	#!/usr/bin/bash
	ping -c1 $2 &>/dev/null
	if [ $? -eq 0 ] ;then
	        echo "$2 is up"
	else
	        echo "$2 is down"
	fi

五：预定义变量

	#!/usr/bin/bash
	#获取主机信息
	time=`date +%F-%T` 		`date +%F`:显示当前日期 -:加的格式 %T:时间
	echo "现在的时间是:" $time
	echo "当前的用户是" $USER
	echo "当前的用户标识" $UID
	echo "当前的主机名称是" $HOSTNAM

六：交互

	#!/usr/bin/bash
	#read -p "请输入姓名：" name
	#read -p "请输入性别：" sex
	#read -p "请输入年龄：" age
	#echo "哈哈哈 $name 的性别是$sex 年龄是$age"

	#read -p "请输入您的姓名" name
	#read -p "请输入您管理的IP地址" ip
	#echo "IP$ip 的管理员是$name "

	#read -p "请输入姓名 性别 年龄:" name sex age
	#echo "您的姓名是$name 性别是$sex 年龄是$age"

	read -p "你中午想吃啥 米？ 面？ 饺子？" r n d
	echo "哦吼，你想吃$r $n $d 呀"

七：备份

	#!/bin/bash
	read -p "请输入您的备份目录" back_dir1
	mkdir $back_dir1 &>/dev/null
	if [ $? -eq 0 ] ;then
	echo "create successful"
	else
	echo "$back_dir1 is already created"
	fi

八：当前内存使用百分比

	#!/usr/bin/bash
	mem_used=`free -m | grep Mem |awk '{print $3}'`
	mem_total=`free -m | grep Mem |awk '{print $2}'`
	mem_percent=$(($mem_used*100/$mem_total))9
	a=2
	b-13
	echo "$a和$b的和是：$(( $a + $b ))"
	echo "$a和$b的积是：$(( $a * $b ))"
	echo "$a和$b的差是：$(( $a - $b ))"
	echo "$a和$b的商是：$(( $a / $b ))"

十：ping www.baidu.com 如果通了 请将通的日期及时间写入到 monitor.up.txt

	#!/usr/bin
	ping -c1 www.baidu.com &>/dev/null
	if [$? -eq 0] ;then
		echo "$(date +'%Y-%m-%d %H:%M:%S) - run monitor program www.baidu.com is ok" > /var/log/up.txt
	else		
		echo "$(date +'%Y-%m-%d %H:%M:%S) - run monitor program www.baidu.com is down" > /var/log/down.txt
	fi

十一：备份

	#!/bin/bash
	back_dir=/var/mysql_back
	if ! test -d $back_dir;then
		mkdir -p $back_dir
	fi
	echo "开始创建，并且备份了。。"

十二：字符串比较

	#!/bin/bash
	if [ $UID -ne 0 ];then		//if [ $UID != "root" ];then
       	echo "你没有权限"
       	exit					//退出脚本
	fi
	yum -y install httpd

十三：文件已存在，显示文件信息，文件不存在，开始创建

	#!/bin/bash
	if [ -f /tmp/test.txt ] ;then
    	echo "文件已存在，显示文件信息"
    	sleep 1 				//沉睡几秒
    	ls -l /tmp/test.txt
	else
		echo "文件不存在，开始创建"
		sleep 1
		touch /tmp/test.txt
		echo "创建成功"
	fi

十四：for循环添加用户

	#!/bin/bash
	for i in {1..10}
	do
		echo "正在添加用户abc$i,稍等。。。"
		sleep 1
		useradd abc$i
		echo "用户abc $i 添加成功！正在设置密码请稍等。。。"    
		sleep 1
		echo "123" | passwd --stdin abc$i > /dev/null
		if [ $? -eq 0 ];then
			echo "用户abc$i 的密码设置成功，可以正常登陆！" 
		fi
	done

十五：交互式添加用户 修改密码

	#!/bin/bash
	read -p "PLS input a username :" user
	read -p "PLS input a new password :" passwd
	id $user &> /dev/null
	if [ $? -eq 0 ];then
	        echo "user $user exists"
	        echo $passwd | passwd --stdin $user &>/dev/null
	        echo "user $user 密码成功修改"
	else
	        useradd $user
	        if [ $? -eq 0 ];then
	        	echo "user is created"
	        	echo $passwd | passwd --stdin $user &>/dev/null
	        	echo "user $user 密码已设定成功"
	        	sleep 3
	        fi
	fi

十六：交互安装KVM

	#!/bin/bash
	read -p "请确认开始安装KVM [y/n]" kvm_install
	if [ ! "$kvm_install" = "y" ];then
	#       echo -e "$red_col 输入不正确！$reset_col"
	        echo -e "输入不正确"
	        exit
	else    
	        echo "开始安装服务啦"
	        yum -y install kvm
	fi

	把do 后面的动作加上 {}&  实现脚本多进程运行

十七：找出可以ping通的ip

	#!/bin/bash
	src_ip="10.9.62"
	for i in {2..254}
	do
		ping -c1 $src_ip.$i &>/dev/null
		if [ $? -eq 0 ];then
		        echo "alive:$src_ip.$i" >> ip_up.txt
		        echo "alive:$src_ip.$i"
		else
		        echo "down:$src_ip.$i" >> ip_down.txt
		        echo "down:$src_ip.$i"
		fi
	done
	sleep 1
	echo "finish"

十八：修改文件后缀

	#!/bin/bash
	for name in `ls *.html`
	do
	mv $name ${name%.html}.txt
	done

十九：监控域名存活

	#!/usr/bin/bash
	URLLIST=$(egrep "com|cn" ./url.txt) 		./ 当前目录
	for url in ${URLLIST}
	do
 			statuCode=$(curl -I --connect-timeout 3 -m 10 -s "${url}" | grep "HTTP")
 			if [[ ${statuCode: 9: 3} -eq 200 ]] || [[ ${statuCode: 9: 3} -eq 302 ]];then
   			echo "$(date +'%Y-%m-%d %H:%M:%S') - run monitor program ${url} is ok" >>/var/log/urlMonitor.log
 			else
   			echo "$(date +'%Y-%m-%d %H:%M:%S') - run monitor program ${url} is failed" >>/var/log/urlerrorMonitor.log
   			echo "[ERROR] ${url} Downtime! Please repair." 
 			fi
	done

二十：选择

	#!/bin/bash
	read -p "pls input a number :" n
	case "$n" in
	1)
		echo "变量是1"
		;;
	2)
		echo "变量是2"
		;;
	3)
		echo "变量是3"
		;;
	*)
		echo "请重新输入1-3"
		exit
	esac

二十一：跳板机

	#!/bin/bash
	#server
	web1=10.9.62.124
	web2=10.9.62.80
	cat <<-EOF
	1.web1
	2.web2
	EOF

	read -p "input your number :" num
	case "$num" in
	1)
		ssh root@$web1
		;;
	2)
		ssh root@$web2
		;;
	esac

二十二：多条件判断

	#!/bin/bash
	read -p "pls input score to test level:" score
	if [ $score -ge 90 ];then
		echo "优秀"
	elif [ $score -ge 80 ];then
		echo "良好"
	elif [ $score -ge 70 ];then
		echo "中等"
	elif [ $score -ge 60 ];then
		echo "及格"
	else
		echo "不及格"
	fi

二十三：删除用户

	#!/bin/bash
	read -p "which you wangt to deleted user:" user
	id $user &>/dev/null
	if [ $? -ne 0 ];then
		echo "no such user:$user"
		exit
	fi
	read -p "Are you sure?[y/n]:" action
	if [ "$action" = "y" ];then
		userdel -r $user
		echo "user is already deleted"
	else
		echo "good!"
	fi

二十四：系统工具箱

	#!/bin/bash
	cat << EOF
	m|M) show memory usages;
	d|D) show disk usages;
	q|Q) quit
	EOF

	read -p "Your choice " choice
	case $choice in
	m|M)
			free -m
			;;
	d|D)
			df -h
			;;
	q|Q)
			exit
			;;
	c|C)
			echo 3 > /proc/sys/vm/drop_caches
			echo "已释放缓存"
			;;
	*)
       		echo "Invalid input"
       		;;
	esac

二十五：while测试ip在线

	#!/bin/bash
	i=2
	while [ $i -le 254 ]
	do 
	        {
	        ip=10.9.62.$i
	        ping -c1 -W1 $ip &>/dev/null
	        if [ $? -eq 0 ];then
	                echo "$ip up"
	        fi
	        }&

	        let i++
	done

二十六：输入1-5，while，case，break

	#!/bin/bash
	while :
	do
		echo -n "Input a number between 1 to 5: "
		read aNum

		case $aNum in
			1|2|3|4|5)
				echo "Your number is $aNum"
				;;
			*)
				echo "You do not select a number between 1 to 5,game is over!"
				break	//跳出循环体
				;;
		esac
	done

二十七：计算size总额

	#!/bin/bash
	for size in $(ls -l *.html |awk '{print$5}')
	do
		sum=$(($sum+$size))
	done
	echo $sum

二十八：安装lamp 调取其他脚本

	#!/bin/bash
	while :
	do
		cat <<-EOF
		|-----------------|
		|  1.install lamp |
		|  2.install lnmp |
		|  3.exit         |
		|-----------------|
		EOF	

	    #read -t 3 -p "Please input tut the num you want:" a     
	     read -p "Please input tut the num you want:" a

		case $a in
		1)
			if [ -f lamp.sh ];then
				chmod 777 lamp.sh
				./lamp.sh
				sleep 3
				echo "lamp is installed!"
			else
				echo "no lamp.sh"
			fi
			;;
		2)
			if [ -f lnmp.sh ];then
				chmod 777 lnmp.sh
				./lnmp.sh
				sleep 3
				echo "lnmp is installed!"
			else
				echo "no lnmp.sh"
			fi
			;;
		3)
			exit
			;;
		*)
			echo "输入错误" 
			;;
		esac
		echo "---------------------我是可爱的分割线喵呜-----------------------"
	done

二十九：定义函数

	#!/bin/bash
	demoFun(){ 							//定义函数
		echo "这是我的第一个shell函数"
	}
	echo "-----函数开始执行-----"

	demoFun 							//调用函数
	echo "-----函数执行完毕-----"

三十：调取两个函数

	#!/usr/bin/bash
	function zh () {
	echo "我是晗哥！" 
	}				

	function zs () {
	echo "我是张三！"
	}

	zh
	zs

三十一：函数传参

	#!/bin/bash
	function eat () {
		echo "中午吃: $1"
	}
	
	eat $1
					
三十二：计算两个数之和

	#!/bin/bash
	fun(){
	echo "这个函数会对输入的两个数字进行相加运算"
	echo "请输入第一个数字"
	read aNum
	echo "请输入第二个数字"
	read anotherNum
	echo "两个数字分别为 $aNum 和 $anotherNum"
	return $(($aNum+$anotherNum))
	}
	fun
	echo "您输入的两个数字之和为$? "

三十三：查看有多少个用户

	#!/bin/bash
	function get_users ()
	{
		users=`cat /etc/passwd | cut -d: -f1`
		echo $users
	}

	//定义一个变量将获取用户列表赋值给这个变量
	user_list=`get_users`

	index=1
	for u in $user_list
	do
		echo "the $index user is : $u"
		index=$(($index+1))
	done

三十四：测试vsftpd是否运行

	#!/bin/bash
	function is_vsftpd_running () 
	{
		ss -tnlp | grep vsftpd &> /dev/null
			if [ $? -eq 0 ];then
				return 0   //结束
			else
				return 1   //结束但是函数失败
			fi
	}

	is_vsftpd_running && echo "vsftpd is running" || echo "vsftpd is stopped"

三十五：检测CPU是否异常

	#!/bin/bash
	DATE=$(date +%F" "%H:%M)
	IP=$(ifconfig |grep broadcast |awk '{print $2}')
	if !which vmstat &>/dev/null;then
		echo "vmstst command no found.Please install procps package"
		exit 1
	fi
	US=$(vmstat |awk NR==3'{print $13}')
	SY=$(vmstat |awk NR==3'{print $14}')
	IDLE=$(vmstat |awk NR==3'{print $15}')
	WAIT=$(vmstat |awk NR==3'{print $16}')
	USE=$(($US+$SY))
	if [ $USE -ne 1 ];then
		echo "
		Date: $DATE
		Host: $IP
		Problem: CPU utilization $USE "
	fi
		
三十六：检测网络 yum源 连通性

	#!/bin/bash
	check_net(){
		echo "正在检查网络通信"
		ping -c1 www.baidu.com &>/dev/null
		if [ $? -eq 0 ];then
			echo "你的网络是没有问题的"
		else
			echo "你的网络有问题，请先检查网络"
			exit 
		fi
	}
	check_net
	echo "++++++++++++++++++++++++++++++++"

	check_yum(){
		echo "正在检查yum源是否可用"
		yum repolist
			if [ $? -eq 0] ;then
				echo "你的yum源可以正常使用"
			else
				echo "yum源不能用，请手动配置网络yum源"
				exit 3
			fi
	}
	check_yum
	echo "++++++++++++++++++++++++++++++++++"

三十七：嵌套函数

	#!/bin/bash
	fact(){
	fact=1
	for ((i=1;i<=5;i++))
	do
		fact=$[$fact * $i]
	done
	echo "5的阶乘是:$fact"
	}

	fact

三十八：数字加倍

	#!/bin/bash
	double(){
	read -p "please input a num: " num
	return $[2*$num]
	}
	double
	echo "double num is: $?"

三十九：数组引用

	#!/bin/bash
	NAME[0]="BJ"
	NAME[1]="SH"
	NAME[2]="SZ"
	NAME[3]="GZ"
	NAME[4]="HZ"
	NAME[5]="ZZ"
	echo "First Index: ${NAME[0]}"
	echo "Second Index: ${NAME[1]}"
	echo "Sixth Index: ${NAME[5]}"

四十：数组访问

	#!/bin/bash
	array=(gz cloud 19)
	echo "case 1"
	for line in "${array[@]}"
	do
		echo $line
	done
	echo "case 2"
	for line in "${array[*]}"
	do
		echo "$line"
	done

	echo "case 3"
	for line in ${array[*]}
	do
		echo "$line"
	done

四十一：配置bond

	#!/bin/bash
	echo "此脚本用来配置bond"
	read -p "请问是否开始执行？[y/n]" action
	if [ "$action" = "y" ];then
		cat > /etc/sysconfig/network-scripts/ifcfg-bond0 <<-EOF
		DEVICE=bond0
		TYPE=Ethernet
		ONBOOT=yes
		NM_CONTROLLED=no        
		BOOTPROTO=none
		IPADDR=10.9.62.124
		PREFIX=24                       
		IPV6INIT=no
		USERCTL=no
		BONDING_MASTER=yes
		BONDING_OPTS="mode=6 miimon=100"
		EOF

		sed -ri 's/BOOTPROTO="dhcp"/BOOTPROTO="none"/' /etc/sysconfig/network-scripts/ifcfg-eth0
		sed -ri '/^IPV6/d' /etc/sysconfig/network-scripts/ifcfg-eth0
		sed -ri '5a\NM_CONTROLLED=no' /etc/sysconfig/network-scripts/ifcfg-eth0
		sed -ri '5a\USERCTL=no' /etc/sysconfig/network-scripts/ifcfg-eth0
		sed -ri '5a\MASTER=bond0' /etc/sysconfig/network-scripts/ifcfg-eth0
		sed -ri '5a\SLAVE=yes'  /etc/sysconfig/network-scripts/ifcfg-eth0

		cat > /etc/sysconfig/network-scripts/ifcfg-eth1 <<-EOF
		DEVICE=eth1
		TYPE=Ethernet
		ONBOOT=yes
		NM_CONTROLLED=no
		BOOTPROTO=none
		IPV6INIT=no
		USERCTL=no
		MASTER=bond0
		SLAVE=yes
		EOF

		systemctl restart network
		if [ $? -eq 0 ];then
			echo "配置bond成功~"
		else
			echo "配置bond失败，请检查是否存在两个网卡"
			exit 
		fi
	else
		echo "那你打开我干啥，哼嘤嘤嘤"
		exit 3
	fi

四十二：配置虚拟主机，选1为博客，2为论坛

	#!/bin/bash
	env(){
		yum -y install mariadb mariadb-server mariadb-libs php php-mysql php-gd php-fpm php-cli gd httpd &>/dev/null
		systemctl restart httpd mariadb &>/dev/null
		if [ $? -eq 0 ];then
			echo "数据库程序已安装"
		else
			echo "数据库程序未安装"
			exit 2
		fi

		mysqladmin -uroot password "123" &>/dev/null
		if [ $? -eq 0 ];then
			echo "数据库初始密码为123"
		else
			echo "数据库初始密码设置失败，请手动设置"
		fi

		mysql -u root -p123 <<-EOF &>/dev/null
		create database shuju;
		EOF

		if [ $? -eq 0 ];then
			echo "已创建数据库，名为shuju"
		else
			echo "数据库创建失败，请手动创建"
		fi
	}

	luntan(){
		cat > /etc/httpd/conf.d/tianyun.conf <<-EOF
		<VirtualHost *:80>
			ServerName www.luntan.com
			DocumentRoot  /web/luntan
		</VirtualHost>
		<Directory "/web/luntan">
			Require all granted
		</Directory>
		EOF

		mkdir -p /web/luntan
		yum -y install unzip &>/dev/null
		unzip Discuz_X3.4_SC_UTF8.zip &>/dev/null
		cp -rf wordpress/* /web/luntan &>/dev/null
		chmod  -R 777 /web/
	}

	boke(){
		cat > /etc/httpd/conf.d/tianyun.conf <<-EOF
		<VirtualHost *:80>
			ServerName www.boke.com
			DocumentRoot  /web/boke
		</VirtualHost>
		<Directory "/web/boke">
			Require all granted
		</Directory>
		EOF

		mkdir -p /web/boke
		tar xf wordpress-4.7.2-zh_CN.tar.gz &>/dev/null
		cp -rf wordpress/* /web/boke &>/dev/null
		chmod  -R 777 /web/
	}

	check(){
		if [ $? -eq 0 ];then
			echo "创建成功"
		else
			echo "创建失败"
		fi
	}

	while :
	do
		cat <<-EOF
		|----------我是可爱的小方框---------|
		|							|
		|    [1]  安装博客           	| 
		|    [2]  安装论坛 		| 
		|    输入其他会退出程序 		|
		|				|
		|------------(*￣∇￣*)-----------|
		EOF

		read -p "请选择您想进行的操作: " a

		case $a in
		1)
			env
			boke
			check
			;;
		2)	
			env
			luntan
			check
			;;
		*)
			exit
			;;
		esac
	echo "+++++++++++++++++++++++++++++++++++++"
	done

四十三：A-B expect SSH

	#!/usr/bin/expect
	spawn ssh-keygen
	expect {
			".ssh/id_rsa):"      { send  "\r";  exp_continue }
			"Overwrite (y/n)?"   { send  "y\r"; exp_continue }
			"no passphrase):"    { send  "\r";  exp_continue }
			"again:"             { send  "\r" };
	}
	interact

	spawn ssh-copy-id -i 188.131.132.198
	expect {
	       "(yes/no)?"    { send "yes\r"; exp_continue }
	       "password:"    {l

	#!/bin/bash
	read -p "请输入一个数值：" num
	if [[ ! "$num" =~ ^[0-9]+$ ]];then
		echo "你输入的不是数字，程序退出"
	else 	
		echo "你输入的是$num "
	fi
四十四：CPU监控报警脚本

- -us：非内核进程消耗CPU运算时间的百分比
- -sy：内核进程消耗CPU运算时间的百分比
- -id：空闲CPU的百分比
- -wa：等待I/O所消耗的CPU百分比
- -st：被虚拟机所盗用的CPU百分比

#!/usr/bin/env bash
#
# author: zhaohan
# date: 2020/09/23
# usage: monitor cpu status

DATE=$(date +'%Y-%m-%d %H:%M:%S')
IPADDR=$(ifconfig | grep inet | awk 'BEGIN{ FS=" " }NR==1{ print $2 }')
ipaddr=$(ifconfig | awk 'NR==2{print $2}')
MAIL="[e-mail]"

# 检测vmstat命令是否存在
if ! which vmstat &>/dev/null; then
	yum -y install procps-ng &>/dev/null
	if [ $? -eq 0 ];then
		echo "vmstat already installed"
	fi
fi

US=$(vmstat | awk 'BEGIN{ FS=" " }NR==3{ print $13 }')
SY=$(vmstat | awk 'BEGIN{ FS=" " }NR==3{ print $14 }')
ID=$(vmstat | awk 'NR==3{ print $15 }')
WA=$(vmstat | awk 'NR==3{ print $16 }')
ST=$(vmstat | awk 'NR==3{ print $17 }')

useTotal=$((${US}+${SY}))
if [[ ${useTotal} -ge 70 ]];then
	echo "
	Date: ${DATE}
	Host: ${HOSTNAME}: ${IPADDR}
	Problem: CPU using rate: ${useTotal}%
	" | mail -s "CPU Monitor Warnning" ${MAIL}
fi

四十五：免密

#!/usr/bin/bash
     get_keygen (){
/usr/bin/expect <<-EOF &>/dev/null
          spawn ssh-keygen
          expect {
                 ".ssh/id_rsa):" { send "\n" ; exp_continue }
                 "Overwrite (y/n)?"  { send "y\n" ; exp_continue }
                 "no passphrase):" { send "\n" ; exp_continue }
                 "again:" { send "\n" } ;
                 }
           expect eof
EOF
                  }
send_key (){
/usr/bin/expect <<-EOF &>/dev/null
    spawn ssh-copy-id root@$ip
     expect {
       "yes/no"    { send "yes\n" ; exp_continue }
       "password:" { send "1\n" ; exp_continue }
                 }
 expect eof
EOF
}
 get_keygen
for ip in $(cat ./ip.txt)
do
         send_key $ip
         echo "$ip已发送"
done