超实用的15个shell脚本,值得收藏
1、检查 MySQL 主从同步状态
#!/bin/bash
HOST=localhost
USER=root
PASSWD=ABC123
IO_SQL_STATUS=$(mysql -h$HOST -u$USER -p$PASSWD -e "show slave statusG" 2>/dev/null |awk "/Slave_.*_Running:/{print $1$2}")
for i in $IO_SQL_STATUS; do
THREAD_STATUS_NAME=${i%:*}
THREAD_STATUS=${i#*:}
if [ "$THREAD_STATUS" != "Yes" ]; then
echo "Error: MySQL Master-Slave $THREAD_STATUS_NAME status is $THREAD_STATUS!" |mail -s "Master-Slave Staus" xxx@163.com
fi
done2、DDOS攻击nginx防范
#!/bin/bash
DATE=$(date +%d/%b/%Y:%H:%M)
LOG_FILE=/etc/nginx/logs/access.log
ABNORMAL_IP=$(tail -n5000 $LOG_FILE |grep $DATE |awk "{a[$1]++}END{for(i in a)if(a[i]>10)print i}")
for IP in $ABNORMALIP; do
if [ $(iptables -vnL |grep -c "$IP") -eq 0 ]; then
iptables -I INPUT -s $IP -j DROP
echo "$(date +"%F%T") $IP" >> /tmp/drop_ip.log
fi
done3、统计异常IP并加入黑名单脚本
#!/bin/bash
netstat -na | grep ESTAB | awk "{print $5}" | awk -F: "{print $1}" | egrep -v "192.168|127.0" | uniq -c | awk "{if($2!=null && $1>1){print $2}}" > /root/dropip.txt
for i in $(cat /root/dropip.txt)
do
/sbin/iptables -A INPUT -s $i -j DROP
echo "$i" >> /root/dropip.log
done4、批量创建用户
#!/bin/bash
USER_FILE=user.txt
for USER in user{1..10}; do
if ! id $USER &>/dev/null; then
PASS=$(echo $RANDOM |md5sum |cut -c 1-8) ##通过random函数生成随机数 然后生成md5值 使用cut 取前几位数字 达到随机密码的目的
useradd $USER
echo $PASS |passwd --stdin $USER &>/dev/null
echo "$USER $PASS" >> $USER_FILE
echo "$USER User create successful."
else
echo "$USER User already exists!"
fi
done5、自动发布php项目
#!/bin/bash
DATE=$(date +%F_%T)
WWWROOT=/usr/local/nginx/html/$1
BACKUP_DIR=/data/backup
WORK_DIR=/tmp
PROJECT_NAME=php-demo
# 拉取代码
cd $WORK_DIR
if [ ! -d $PROJECT_NAME ]; then
git clone https://github.com/xxxxx/php-demo
cd $PROJECT_NAME
else
cd $PROJECT_NAME
git pull
fi
# 部署
if [ ! -d $WWWROOT ]; then
mkdir -p $WWWROOT
rsync -avz --exclude=.git $WORK_DIR/$PROJECT_NAME/* $WWWROOT
else
rsync -avz --exclude=.git $WORK_DIR/$PROJECT_NAME/* $WWWROOT
fi6、日常巡检 CPU、内存、磁盘脚本
#!/bin/bash
cat << HERD
=======日常巡检=======
= 1.CPU =
= 2.内存 =
= 3.硬盘 =
= 0.退出 =
======================
HERD
while :
do
read -p "Please enter what you want to see:" num # 输入想要查看的信息块
case $num in
1)
CPU_ID=`grep "physical id" /proc/cpuinfo |sort |uniq |wc -l` # /proc/cpuinfo CPU的相关配置信息
CPU_CORES=`grep "cores" /proc/cpuinfo |sort |uniq |awk "{print $4}"`
CPU_MODE=`grep "model name" /proc/cpuinfo |sort |uniq |awk -F: "{print $2}"`
echo -e " 33[34m CPU 数量:$CPU_ID 33[0m"
echo -e " 33[34m CPU 核心:$CPU_CORES 33[0m"
echo -e " 33[34m CPU 型号:$CPU_MODE 33[0m"
;;
2)
MEM_TOTAL=`free -m |grep Mem |awk "{print $2}"` # free 查看内存的命令
MEM_FREE=`free -m |grep Mem |awk "{print $7}"`
echo -e " 33[34m 内存总容量:${MEM_TOTAL}MB 33[0m"
echo -e " 33[34m 剩余内存容量:${MEM_FREE}MB 33[0m"
;;
3)
DISK_SIZE=0 # 初始化磁盘大小为0
SWAP_SIZE=`free |grep Swap |awk "{print $2}"` # 交换分区大小
PARTITION_SIZE=(`df -T |sed 1d |egrep -v "tmpfs" |awk "{print $3}"`) # 以元组形式显示硬盘大小
for (( i=0; i<`echo ${#PARTITION_SIZE[*]}`; i++ )) # 计算磁盘大小
do
DISK_SIZE=`expr $DISK_SIZE + ${PARTITION_SIZE[$i]}`
done
((DISK_SIZE=($DISK_SIZE+$SWAP_SIZE)/1024/1024)) # 单位换算
DISK_FREE=0 # 初始化空闲磁盘大小为0
SWAP_FREE=`free |grep Swap |awk "{print $4}"` # 空闲交换分区大小
PARTITION_FREE=(`df -T |sed 1d |egrep -v "tmpfs" |awk "{print $5}"`) # 以元组形式显示空闲硬盘大小
for (( i=0; i<`echo ${#PARTITION_SIZE[*]}`; i++ )) # 计算空闲磁盘大小
do
DISK_FREE=`expr $DISK_FREE + ${PARTITION_FREE[$i]}`
done
((DISK_FREE=($DISK_FREE+$SWAP_FREE)/1024/1024)) # 单位换算
echo -e " 33[34m 磁盘总容量:${DISK_SIZE}GB 33[0m"
echo -e " 33[34m 磁盘剩余容量:${DISK_FREE}GB 33[0m"
;;
0)
echo -e " 33[34m 感谢使用本系统! 33[0m"
exit
;;
*)
echo -e " 33[34m Wrong input,please input again! 33[0m" # 输入错误,请重新输入
esac
done7、检查域名证书是否过期并发邮件
#/bin/bash
source /etc/profile
>/root/domain_date.txt
file=/scripts/host.txt
grep -v "^#" $file | while read n;do
NAME=`echo $n | awk "{print $1}"`
domain=`echo $n | awk "{print $2}"`
port=443
NOW_TIME=`date +%s -d "$(date | awk -F " +" "{print $2,$3,$6}")"`
END_TIME=`echo | openssl s_client -servername $domain -connect $domain:$port 2>/dev/null | openssl x509 -noout -dates |grep "After"| awk -F "=" "{print $2}"| awk -F " +" "{print $1,$2,$4 }"`
END_TIME1=`date +%s -d "$END_TIME"`
RST=$(($(($END_TIME1-$NOW_TIME))/(86400)))
echo $NAME--$domain--$RST >> /root/domain_date.txt
done8、检查主机是否存活ping
#! /bin/bash
i=1
while [ $i -le 254 ]
#从1到254依次检测
do
ping -c2 -i0.3 -w1 192.168.0.$i &>/dev/null
#通过ping命令查询当前网段所有IP下连接状态,能ping通即表示主机开机状态,否则为关机状态
if [ $? -eq 0 ];then
#对ping的结果进行判断
echo "192.168.0.$i is up"
#输出开机状态的主机IP
else
echo "192.168.0.$i is down"
#输出关机状态的主机IP
fi
let i++
done9、自动同步数据脚本
#!/bin/bash
filedir=/data/webserver
function front_backup() {
cd ${filedir}
rsync -avz --progress --password-file=/etc/rsync.pass ${filedir}/* rsync_backup@192.168.1.51::front_web/192.168.1.12/
exit
}
front_backup10、服务器系统配置初始化
#/bin/bash
# 安装系统性能分析工具及其他
yum install gcc make autoconf vim sysstat net-tools iostat iftop iotp wget lrzsz lsof unzip openssh-clients net-tool vim ntpdate -y
# 设置时区并同步时间
ln -s /usr/share/zoneinfo/Asia/Shanghai /etc/localtime
if ! crontab -l |grep ntpdate &>/dev/null ; then
(echo "* 1 * * * ntpdate time.windows.com >/dev/null 2>&1";crontab -l) |crontab
fi
# 禁用selinux
sed -i "/SELINUX/{s/permissive/disabled/}" /etc/selinux/config
# 关闭防火墙
if egrep "7.[0-9]" /etc/redhat-release &>/dev/null; then
systemctl stop firewalld
systemctl disable firewalld
elif egrep "6.[0-9]" /etc/redhat-release &>/dev/null; then
service iptables stop
chkconfig iptables off
fi
# 历史命令显示操作时间
if ! grep HISTTIMEFORMAT /etc/bashrc; then
echo "export HISTTIMEFORMAT="%Y-%m-%d %H:%M:%S `whoami` "" >> /etc/bashrc
fi
# SSH超时时间
if ! grep "TMOUT=600" /etc/profile &>/dev/null; then
echo "export TMOUT=600" >> /etc/profile
fi
# 禁止root远程登录 切记给系统添加普通用户,给su到root的权限
sed -i "s/#PermitRootLogin yes/PermitRootLogin no/" /etc/ssh/sshd_config
# 禁止定时任务向发送邮件
sed -i "s/^MAILTO=root/MAILTO=""/" /etc/crontab
# 设置最大打开文件数
if ! grep "* soft nofile 65535" /etc/security/limits.conf &>/dev/null; then
cat >> /etc/security/limits.conf << EOF
* soft nofile 65535
* hard nofile 65535
EOF
fi
# 系统内核优化
cat >> /etc/sysctl.conf << EOF
net.ipv4.tcp_syncookies = 1
net.ipv4.tcp_max_tw_buckets = 20480
net.ipv4.tcp_max_syn_backlog = 20480
net.core.netdev_max_backlog = 262144
net.ipv4.tcp_fin_timeout = 20
EOF
# 减少SWAP使用
echo "0" > /proc/sys/vm/swappiness11、一键查看服务器利用率
#!/bin/bash
function cpu(){
util=$(vmstat | awk "{if(NR==3)print $13+$14}")
iowait=$(vmstat | awk "{if(NR==3)print $16}")
echo "CPU -使用率:${util}% ,等待磁盘IO相应使用率:${iowait}:${iowait}%"
}
function memory (){
total=`free -m |awk "{if(NR==2)printf "%.1f",$2/1024}"`
used=`free -m |awk "{if(NR==2) printf "%.1f",($2-$NF)/1024}"`
available=`free -m |awk "{if(NR==2) printf "%.1f",$NF/1024}"`
echo "内存 - 总大小: ${total}G , 使用: ${used}G , 剩余: ${available}G"
}
disk(){
fs=$(df -h |awk "/^/dev/{print $1}")
for p in $fs; do
mounted=$(df -h |awk "$1==""$p""{print $NF}")
size=$(df -h |awk "$1==""$p""{print $2}")
used=$(df -h |awk "$1==""$p""{print $3}")
used_percent=$(df -h |awk "$1==""$p""{print $5}")
echo "硬盘 - 挂载点: $mounted , 总大小: $size , 使用: $used , 使用率: $used_percent"
done
}
function tcp_status() {
summary=$(ss -antp |awk "{status[$1]++}END{for(i in status) printf i":"status[i]" "}")
echo "TCP连接状态 - $summary"
}
cpu
memory
disk
tcp_status12、找出占用CPU 内存过高的进程
#!/bin/bash
echo "-------------------CUP占用前10排序--------------------------------"
ps -eo user,pid,pcpu,pmem,args --sort=-pcpu |head -n 10
echo "-------------------内存占用前10排序--------------------------------"
ps -eo user,pid,pcpu,pmem,args --sort=-pmem |head -n 1013、批量检测网站是否异常并邮件通知
#!/bin/bash
URL_LIST="www.baidu.com www.ctnrs.com www.der-matech.net.cn www.der-matech.com.cn www.der-matech.cn www.der-matech.top www.der-matech.org"
for URL in $URL_LIST; do
FAIL_COUNT=0
for ((i=1;i<=3;i++)); do
HTTP_CODE=$(curl -o /dev/null --connect-timeout 3 -s -w "%{http_code}" $URL)
if [ $HTTP_CODE -eq 200 ]; then
echo "$URL OK"
break
else
echo "$URL retry $FAIL_COUNT"
let FAIL_COUNT++
fi
done
if [ $FAIL_COUNT -eq 3 ]; then
echo "Warning: $URL Access failure!"
echo "网站$URL坏掉,请及时处理" | mail -s "$URL网站高危" 1794748404@qq.com
fi
done14、一键部署LNMP网站平台脚本
#!/bin/bash
NGINX_V=1.15.6
PHP_V=5.6.36
TMP_DIR=/tmp
INSTALL_DIR=/usr/local
PWD_C=$PWD
echo
echo -e " Menu "
echo -e "1. Install Nginx"
echo -e "2. Install PHP"
echo -e "3. Install MySQL"
echo -e "4. Deploy LNMP"
echo -e "9. Quit"
function command_status_check() {
if [ $? -ne 0 ]; then
echo $1
exit
fi
}
function install_nginx() {
cd $TMP_DIR
yum install -y gcc gcc-c++ make openssl-devel pcre-devel wget
wget http://nginx.org/download/nginx-${NGINX_V}.tar.gz
tar zxf nginx-${NGINX_V}.tar.gz
cd nginx-${NGINX_V}
./configure --prefix=$INSTALL_DIR/nginx
--with-http_ssl_module
--with-http_stub_status_module
--with-stream
command_status_check "Nginx - 平台环境检查失败!"
make -j 4
command_status_check "Nginx - 编译失败!"
make install
command_status_check "Nginx - 安装失败!"
mkdir -p $INSTALL_DIR/nginx/conf/vhost
alias cp=cp ; cp -rf $PWD_C/nginx.conf $INSTALL_DIR/nginx/conf
rm -rf $INSTALL_DIR/nginx/html/*
echo "ok" > $INSTALL_DIR/nginx/html/status.html
echo "<?php echo "ok"?>" > $INSTALL_DIR/nginx/html/status.php
$INSTALL_DIR/nginx/sbin/nginx
command_status_check "Nginx - 启动失败!"
}
function install_php() {
cd $TMP_DIR
yum install -y gcc gcc-c++ make gd-devel libxml2-devel
libcurl-devel libjpeg-devel libpng-devel openssl-devel
libmcrypt-devel libxslt-devel libtidy-devel
wget http://docs.php.net/distributions/php-${PHP_V}.tar.gz
tar zxf php-${PHP_V}.tar.gz
cd php-${PHP_V}
./configure --prefix=$INSTALL_DIR/php
--with-config-file-path=$INSTALL_DIR/php/etc
--enable-fpm --enable-opcache
--with-mysql --with-mysqli --with-pdo-mysql
--with-openssl --with-zlib --with-curl --with-gd
--with-jpeg-dir --with-png-dir --with-freetype-dir
--enable-mbstring --enable-hash
command_status_check "PHP - 平台环境检查失败!"
make -j 4
command_status_check "PHP - 编译失败!"
make install
command_status_check "PHP - 安装失败!"
cp php.ini-production $INSTALL_DIR/php/etc/php.ini
cp sapi/fpm/php-fpm.conf $INSTALL_DIR/php/etc/php-fpm.conf
cp sapi/fpm/init.d.php-fpm /etc/init.d/php-fpm
chmod +x /etc/init.d/php-fpm
/etc/init.d/php-fpm start
command_status_check "PHP - 启动失败!"
}
read -p "请输入编号:" number
case $number in
1)
install_nginx;;
2)
install_php;;
3)
install_mysql;;
4)
install_nginx
install_php
;;
9)
exit;;
esac15、自动发布Java项目(Tomcat)
#!/bin/bash
DATE=$(date +%F_%T)
TOMCAT_NAME=$1
TOMCAT_DIR=/usr/local/$TOMCAT_NAME
ROOT=$TOMCAT_DIR/webapps/ROOT
BACKUP_DIR=/data/backup
WORK_DIR=/tmp
PROJECT_NAME=tomcat-java-demo
# 拉取代码
cd $WORK_DIR
if [ ! -d $PROJECT_NAME ]; then
git clone https://github.com/xxxx/tomcat-java-demo
cd $PROJECT_NAME
else
cd $PROJECT_NAME
git pull
fi
# 构建
mvn clean package -Dmaven.test.skip=true
if [ $? -ne 0 ]; then
echo "maven build failure!"
exit 1
fi
# 部署
TOMCAT_PID=$(ps -ef |grep "$TOMCAT_NAME" |egrep -v "grep|$" |awk "NR==1{print $2}")
[ -n "$TOMCAT_PID" ] && kill -9 $TOMCAT_PID
[ -d $ROOT ] && mv $ROOT $BACKUP_DIR/${TOMCAT_NAME}_ROOT$DATE
unzip $WORK_DIR/$PROJECT_NAME/target/*.war -d $ROOT
$TOMCAT_DIR/bin/startup.sh
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