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17 个实用 shell 脚本,建议收藏!
source link: https://segmentfault.com/a/1190000041370811
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1、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/swappiness
2、批量创建多个用户并设置密码
#!/bin/bash USER_LIST=$@ USER_FILE=./user.info for USER in $USER_LIST;do if ! id $USER &>/dev/null; then PASS=$(echo $RANDOM |md5sum |cut -c 1-8) useradd $USER echo $PASS | passwd --stdin $USER &>/dev/null echo "$USER $PASS" >> $USER_FILE echo "$USER User create successful." else echo "$USER User already exists!" fi done
3、一键查看服务器利用率
#!/bin/bash function cpu(){ util=$(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_status
4、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 10
5、查看网卡的实时流量
#!/bin/bash eth0=$1 echo -e "流量进入--流量传出 " while true; do old_in=$(cat /proc/net/dev |grep $eth0 |awk '{print $2}') old_out=$(cat /proc/net/dev |grep $eth0 |awk '{print $10}') sleep 1 new_in=$(cat /proc/net/dev |grep $eth0 |awk '{print $2}') new_out=$(cat /proc/net/dev |grep $eth0 |awk '{print $10}') in=$(printf "%.1f%s" "$((($new_in-$old_in)/1024))" "KB/s") out=$(printf "%.1f%s" "$((($new_out-$old_out)/1024))" "KB/s") echo "$in $out" done
6、监控多台服务器磁盘利用率脚本
#!/bin/bash HOST_INFO=host.info for IP in $(awk '/^[^#]/{print $1}' $HOST_INFO); do #取出用户名和端口 USER=$(awk -v ip=$IP 'ip==$1{print $2}' $HOST_INFO) PORT=$(awk -v ip=$IP 'ip==$1{print $3}' $HOST_INFO) #创建临时文件,保存信息 TMP_FILE=/tmp/disk.tmp #通过公钥登录获取主机磁盘信息 ssh -p $PORT $USER@$IP 'df -h' > $TMP_FILE #分析磁盘占用空间 USE_RATE_LIST=$(awk 'BEGIN{OFS="="}/^\/dev/{print $NF,int($5)}' $TMP_FILE) #循环磁盘列表,进行判断 for USE_RATE in $USE_RATE_LIST; do #取出等号(=)右边的值 挂载点名称 PART_NAME=${USE_RATE%=*} #取出等号(=)左边的值 磁盘利用率 USE_RATE=${USE_RATE#*=} #进行判断 if [ $USE_RATE -ge 80 ]; then echo "Warning: $PART_NAME Partition usage $USE_RATE%!" echo "服务器$IP的磁盘空间占用过高,请及时处理" | mail -s "空间不足警告" 你的[email protected] else echo "服务器$IP的$PART_NAME目录空间良好" fi done done
7、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 "$URL网站高危" [email protected] fi done
8、批量主机远程执行命令脚本
#!/bin/bash COMMAND=$* HOST_INFO=host.info for IP in $(awk '/^[^#]/{print $1}' $HOST_INFO); do USER=$(awk -v ip=$IP 'ip==$1{print $2}' $HOST_INFO) PORT=$(awk -v ip=$IP 'ip==$1{print $3}' $HOST_INFO) PASS=$(awk -v ip=$IP 'ip==$1{print $4}' $HOST_INFO) expect -c " spawn ssh -p $PORT $USER@$IP expect { \"(yes/no)\" {send \"yes\r\"; exp_continue} \"password:\" {send \"$PASS\r\"; exp_continue} \"$USER@*\" {send \"$COMMAND\r exit\r\"; exp_continue} } " echo "-------------------" done
9、一键部署LNMP网站平台脚本
#!/bin/bash NGINX_V=1.15.6 PHP_V=5.6.36 TMP_DIR=/tmp INSTALL_DIR=/usr/local PWD_C=$PWD echo echo -e "\tMenu\n" 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 $number in 1) install_nginx;; 2) install_php;; 3) install_mysql;; 4) install_nginx install_php ;; 9) exit;; esac
10、监控MySQL主从同步状态是否异常脚本
#!/bin/bash HOST=localhost USER=root PASSWD=123.com IO_SQL_STATUS=$(mysql -h$HOST -u$USER -p$PASSWD -e 'show slave status\G' 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 $THREAD_STATUS!" |mail -s "Master-Slave Staus" [email protected] fi done
11、MySql数据库备份脚本
mysqldump -uroot -pxxx -B A > A.sql #!/bin/bash DATE=$(date +%F_%H-%M-%S) HOST=localhost USER=backup PASS=123.com BACKUP_DIR=/data/db_backup DB_LIST=$(mysql -h$HOST -u$USER -p$PASS -s -e "show databases;" 2>/dev/null |egrep -v "Database|information_schema|mysql|performance_schema|sys") for DB in $DB_LIST; do BACKUP_NAME=$BACKUP_DIR/${DB}_${DATE}.sql if ! mysqldump -h$HOST -u$USER -p$PASS -B $DB > $BACKUP_NAME 2>/dev/null; then echo "$BACKUP_NAME 备份失败!" fi done
mysqldump -uroot -pxxx -A t > t.sql #!/bin/bash DATE=$(date +%F_%H-%M-%S) HOST=localhost USER=backup PASS=123.com BACKUP_DIR=/data/db_backup DB_LIST=$(mysql -h$HOST -u$USER -p$PASS -s -e "show databases;" 2>/dev/null |egrep -v "Database|information_schema|mysql|performance_schema|sys") for DB in $DB_LIST; do BACKUP_DB_DIR=$BACKUP_DIR/${DB}_${DATE} [ ! -d $BACKUP_DB_DIR ] && mkdir -p $BACKUP_DB_DIR &>/dev/null TABLE_LIST=$(mysql -h$HOST -u$USER -p$PASS -s -e "use $DB;show tables;" 2>/dev/null) for TABLE in $TABLE_LIST; do BACKUP_NAME=$BACKUP_DB_DIR/${TABLE}.sql if ! mysqldump -h$HOST -u$USER -p$PASS $DB $TABLE > $BACKUP_NAME 2>/dev/null; then echo "$BACKUP_NAME 备份失败!" fi done done
12、Nginx访问日志分析
#!/bin/bash # 日志格式: $remote_addr - $remote_user [$time_local] "$request" $status $body_bytes_sent "$http_referer" "$http_user_agent" "$http_x_forwarded_for" LOG_FILE=$1 echo "统计访问最多的10个IP" awk '{a[$1]++}END{print "UV:",length(a);for(v in a)print v,a[v]}' $LOG_FILE |sort -k2 -nr |head -10 echo "----------------------" echo "统计时间段访问最多的IP" awk '$4>="[01/Dec/2018:13:20:25" && $4<="[27/Nov/2018:16:20:49"{a[$1]++}END{for(v in a)print v,a[v]}' $LOG_FILE |sort -k2 -nr|head -10 echo "----------------------" echo "统计访问最多的10个页面" awk '{a[$7]++}END{print "PV:",length(a);for(v in a){if(a[v]>10)print v,a[v]}}' $LOG_FILE |sort -k2 -nr echo "----------------------" echo "统计访问页面状态码数量" awk '{a[$7" "$9]++}END{for(v in a){if(a[v]>5)print v,a[v]}}' $LOG_FILE |sort -k3 -nr
13、Nginx访问日志自动按天(周、月)切割
#!/bin/bash #nginx日志目录 LOG_DIR=/www/server/nginx/logs #获取到上一天的时间 YESTERDAY_TIME=$(date -d "yesterday" +%F) #归档日志取时间 LOG_MONTH_DIR=$LOG_DIR/$(date +"%Y-%m") #归档日志的名称 LOG_FILE_LIST="access.log" for LOG_FILE in $LOG_FILE_LIST; do [ ! -d $LOG_MONTH_DIR ] && mkdir -p $LOG_MONTH_DIR mv $LOG_DIR/$LOG_FILE $LOG_MONTH_DIR/${LOG_FILE}_${YESTERDAY_TIME} done kill -USR1 $(cat $LOG_DIR/nginx.pid)
14、自动发布Java项目(Tomcat)
#!/bin/bash DATE=$(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/lizhenliang/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 $TOMCAT_DIR/bin/startup.sh
15、自动发布PHP项目
#!/bin/bash DATE=$(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/lizhenliang/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/* $WWWROOT fi
16、DOS攻击防范(自动屏蔽攻击IP)
#!/bin/bash DATE=$(date +%d/%b/%Y:%H:%M) #nginx日志 LOG_FILE=/usr/local/nginx/logs/demo2.access.log #分析ip的访问情况 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 $ABNORMAL_IP; 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 done
17、目录入侵检测与告警
#!/bin/bash MON_DIR=/opt inotifywait -mqr --format %f -e create $MON_DIR |\ while read files; do #同步文件 rsync -avz /opt /tmp/opt #检测文件是否被修改 #echo "$(date +'%F %T') create $files" | mail -s "dir monitor" [email protected] done
作者:南宫乘风
链接:blog.csdn.net/heian_99/article/details/104027379
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