1、安装方式
wget http://10.8.225.126/wsmonitor/install.sh;sh install.sh t[email protected]
2、install.sh
#!/bin/sh if [ $# -ne 1 ]; then echo "########################################################" echo "# 用法：sh install_monitor.sh 邮箱地址; #" echo "# 如：sh install_monitor.sh [email protected] #" echo "# 若邮箱地址多个用英文逗号分隔 #" echo "########################################################" exit 1 fi #对应目录放开权限，安装sendmail /usr/bin/chattr -i /etc/shadow /etc/passwd /etc/gshadow /etc/group /etc/group- mkdir /var/spool/clientmqueue;chmod 777 /var/spool/clientmqueue for i in `seq 1 3` do echo $i rpm -q --quiet sendmail if [ $? == 1 ]; then yum install -y sendmail if [ $? == 1 ]; then echo "######ERROR!sendmail install fail!######" echo "######Please try [yum install -y sendmail]######" exit fi fi rpm -q --quiet sendmail if [ $? == 0 ]; then service sendmail restart if [ $? == 1 ]; then echo "######ERROR!sendmail start fail!######" echo "######Please try [service sendmail restart]######" exit fi chkconfig --add sendmail break fi done #下载监控脚本及启动后台执行 current=`date "+%Y-%m-%d %H:%M:%S"` timestamp=`date -d "$current" +%s` mkdir -p /usr/local/wsmonitor mkdir -p /usr/local/wsmonitor/bak for i in `seq 1 3` do echo $i # if [ -f wsmonitor.sh ];then # mv /usr/local/wsmonitor/wsmonitor.sh /usr/local/wsmonitor/bak/wsmonitor.sh.$timestamp # fi wget http://10.8.225.126/wsmonitor/wsmonitor.sh -O /usr/local/wsmonitor/wsmonitor.sh wget http://10.8.225.126/wsmonitor/wsmonitor -O /etc/init.d/wsmonitor wget http://10.8.225.126/wsmonitor/ReadMe_wsmonitor.txt -O /usr/local/wsmonitor/ReadMe_wsmonitor.txt #替换监控脚本中的邮箱地址 sed -i '[email protected]/MAILTO='$1'/g' /usr/local/wsmonitor/wsmonitor.sh #启动服务 chmod +x /etc/init.d/wsmonitor service wsmonitor restart echo "#################################################################" echo "#####Install wsmonitor success! #####" echo "#################################################################" echo "#####If you want to change mailaddress,edit [/usr/local/wsmonitor/wsmonitor.sh]! #####" echo "#####Please use [service wsmonitor start/stop/restart] #####" echo "使用说明见：/usr/local/wsmonitor/ReadMe_wsmonitor.txt" exit done
3、wsmontor.sh
#!/bin/bash ntpdate cn.pool.ntp.org #配置多个收件人用英文逗号隔开 #MAILTO=cc@wangsu.com,[email protected] #MAILTO=cc@wangsu.com MAILTO=[email protected],[email protected] #1、监控间隔时间，单位（秒） TIME_INTERVAL=5 #2、内存使用率，单位 （%） MEM_RATE=1 #3、流量监控设置 #要监控的网卡 ETH_NAME=eth0 #上行下行流量,单位（MB) FLOWIN_MB=10240 FLOWOUT_MB=10240 #4、TCP连接状态数量,连接的最大个数 TIME_WAIT=1000 ESTABLISHED=1000 #5、CPU使用率,大于该值发送告警，单位（%） CPU_RATE=80 #6、硬盘占用率，单位（%） DISK_RATE=80 ############################################################ ################！以下脚本内容不需要修改！！################ ############################################################ #检测是否加入crontab #username=`users|awk '{print $1}'` #crontab_path=/var/spool/cron/$username #script_path=`pwd` #ifexist=`crontab -l|grep wsmonitor_keepalive.sh|wc -l` #ifexist_mail=`crontab -l|grep wsmonitor_keepalive.sh|grep $MAILTO|wc -l` #if [ $ifexist -eq 0 ];then # echo "1 * * * * sh $script_path/wsmonitor_keepalive.sh $MAILTO > /dev/null 2>&1" >>$crontab_path #elif [[ $ifexist -eq 1 && $ifexist_mail -eq 0 ]];then # sed -i '/wsmonitor_keepalive.sh/d' $crontab_path # echo "1 * * * * sh $script_path/wsmonitor_keepalive.sh $MAILTO > /dev/null 2>&1" >>$crontab_path #fi while [ 1 ] do #获取本机IP SERVER_IP=`ifconfig -a|grep inet|grep -v 127.0.0.1|grep -v inet6|awk '{print $2}'|tr -d "addr:"` #定义发送邮件的内容 MAILSUBJECT="WARNING_[$SERVER_IP]" MAILFROM="[email protected]" function do_sendmail() { sendmail -t <<EOF from:wsmonitor <$MAILFROM> to:$MAILTO subject:[$1]_$MAILSUBJECT Content-Type: text/html;charset=utf-8 <html> <body> $time $1当前监控记录值为：$2，大于设置的阈值：$3，详情登陆系统查看[$SERVER_IP]。当天同一资源超过阈值只告警一次。<br /> 备注：请勿回复此邮件！ </body></html> EOF } # 监 控 脚 本 执 行 内 容 ################################################################################ mkdir -p /usr/local/wsmonitor/log date=`date +"%Y%m%d"` time=`date +"%Y-%m-%d %H:%M:%S"` LOG_PATH=/usr/local/wsmonitor/log/monitor_$date.log ################################################################## ####1、为CPU使用率计算先记录日志1################################# ####2、为FLOW计算先获取flowin和flowout############################ ################################################################## cpulog_1=$(cat /proc/stat | grep 'cpu ' | awk '{print $2" "$3" "$4" "$5" "$6" "$7" "$8}') flowin_old=$(cat /proc/net/dev|grep -w $ETH_NAME|sed -e "s//(.*/)/:/(.*/)//2/g" |awk '{ print $1 }') flowout_old=$(cat /proc/net/dev|grep -w $ETH_NAME|sed -e "s//(.*/)/:/(.*/)//2/g" |awk '{ print $9 }') #监控周期 sleep $TIME_INTERVAL ################################################################## ###########################内存监控部分########################### ################################################################## #对于应用程序来说，buffers/caches是未被使用的，对应-/+ buffers/cache那一行 memuse=`free -m|grep "buffers/cache"|awk '{print $3}'` memtotal=`free -m|grep "Mem"|awk '{print $2}'` MEM_NOW=`echo "$memuse/$memtotal*100"|bc -l|cut -d. -f1` MEM_TAG=`echo "$MEM_NOW $MEM_RATE"|awk '{tag=0;if($1>$2){tag=1} print tag}'` echo "$time MEM $MEM_NOW $MEM_RATE $MEM_TAG">>$LOG_PATH #DISK:df -lh查看磁盘使用率，获取最大值 disk_log=/tmp/disk_tmp.log df -lh|grep -v Filesystem|awk '{print $5}' > $disk_log DISK_NOW=`cat $disk_log |awk 'BEGIN{max=0}{if($1+0>max+0) max=$1 fi} END {print max}'|cut -d% -f1` DISK_TAG=`echo "$DISK_NOW $DISK_RATE"|awk '{tag=0;if($1>$2){tag=1} print tag}'` echo "$time DISK $DISK_NOW $DISK_RATE $DISK_TAG">>$LOG_PATH ################################################################### #####连接数:只获取ESTABLISHED和TIME_WAIT状态的tcp连接数############ ################################################################### tcpconn_log=/tmp/tcpconn.log netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a, S[a]}' >$tcpconn_log #注意连接数为0的情况 grep ESTABLISHED $tcpconn_log > /dev/null if [ $? -eq 1 ] ; then echo "ESTABLISHED 0 " >>$tcpconn_log fi ESTABLISHED_NOW=`grep ESTABLISHED $tcpconn_log|awk '{print $2}'` ESTABLISHED_TAG=`echo "$ESTABLISHED_NOW $ESTABLISHED"|awk '{tag=0;if($1>$2){tag=1} print tag}'` echo "$time ESTABLISHED $ESTABLISHED_NOW $ESTABLISHED $ESTABLISHED_TAG">>$LOG_PATH grep TIME_WAIT $tcpconn_log > /dev/null if [ $? -eq 1 ] ; then echo "TIME_WAIT 0 " >>$tcpconn_log fi TIME_WAIT_NOW=`grep TIME_WAIT $tcpconn_log|awk '{print $2}'` TIME_WAIT_TAG=`echo "$TIME_WAIT_NOW $TIME_WAIT"|awk '{tag=0;if($1>$2){tag=1} print tag}'` echo "$time TIME_WAIT $TIME_WAIT_NOW $TIME_WAIT $TIME_WAIT_TAG">>$LOG_PATH ################################################################## ######################### 流量 ################################### ################################################################## flowin=$(cat /proc/net/dev|grep -w $ETH_NAME|sed -e "s//(.*/)/:/(.*/)//2/g"|awk '{ print $1 }') flowout=$(cat /proc/net/dev|grep -w $ETH_NAME|sed -e "s//(.*/)/:/(.*/)//2/g"|awk '{ print $9 }') FLOWIN=$((($flowin-$flowin_old)/$TIME_INTERVAL)) FLOWOUT=$((($flowout-$flowout_old)/$TIME_INTERVAL)) #echo "Recv rate: $((${FLOWIN}/1024)) KB/s Sent rate: $((${FLOWOUT}/1024)) KB/s " flowin_old=${flowin} flowout_old=${flowout} #转换单位为MB FLOWIN_MB_NOW=$(((${FLOWIN}/1024)/1024)) FLOWOUT_MB_NOW=$(((${FLOWOUT}/1024)/1024)) FLOWIN_MB_TAG=`echo "$FLOWIN_MB_NOW $FLOWIN_MB"|awk '{tag=0;if($1>$2){tag=1} print tag}'` FLOWOUT_MB_TAG=`echo "$FLOWOUT_MB_NOW $FLOWOUT_MB"|awk '{tag=0;if($1>$2){tag=1} print tag}'` echo "$time FLOWIN_MB $FLOWIN_MB_NOW $FLOWIN_MB $FLOWIN_MB_TAG">>$LOG_PATH echo "$time FLOWOUT_MB $FLOWOUT_MB_NOW $FLOWOUT_MB $FLOWOUT_MB_TAG">>$LOG_PATH #转换单位为KB FLOWIN_KB_NOW=$((${FLOWIN}/1024)) FLOWOUT_KB_NOW=$((${FLOWOUT}/1024)) FLOWIN_KB_TAG=`echo "$FLOWIN_KB_NOW $((${FLOWIN_MB}*1024))"|awk '{tag=0;if($1>$2){tag=1} print tag}'` FLOWOUT_KB_TAG=`echo "$FLOWOUT_KB_NOW $((${FLOWOUT_MB}*1024))"|awk '{tag=0;if($1>$2){tag=1} print tag}'` echo "$time FLOWIN_KB $FLOWIN_KB_NOW $((${FLOWIN_MB}*1024)) $FLOWIN_KB_TAG">>$LOG_PATH echo "$time FLOWOUT_KB $FLOWOUT_KB_NOW $((${FLOWOUT_MB}*1024)) $FLOWOUT_KB_TAG">>$LOG_PATH ################################################################## ######################CPU 通过/proc/stat计算###################### ################################################################## sys_idle_1=$(echo $cpulog_1 | awk '{print $4}') total_1=$(echo $cpulog_1 | awk '{print $1+$2+$3+$4+$5+$6+$7}') cpulog_2=$(cat /proc/stat | grep 'cpu ' | awk '{print $2" "$3" "$4" "$5" "$6" "$7" "$8}') sys_idle_2=$(echo $cpulog_2 | awk '{print $4}') total_2=$(echo $cpulog_2 | awk '{print $1+$2+$3+$4+$5+$6+$7}') sys_idle=`expr $sys_idle_2 - $sys_idle_1` total=`expr $total_2 - $total_1` CPU_NOW=`echo "100-$sys_idle/$total*100"|bc -l|cut -d. -f1` if [ $total -eq 0 ] ;then CPU_NOW=0 elif [ ! -n "$CPU_NOW" ];then CPU_NOW=0 fi CPU_TAG=`echo "$CPU_NOW $CPU_RATE"|awk '{tag=0;if($1>$2){tag=1} print tag}'` echo "$time CPU $CPU_NOW $CPU_RATE $CPU_TAG">>$LOG_PATH ######################################################################################## #检查日志中是否有超过阈值的记录 function check_ifoverload() { all_count=`grep $1 $LOG_PATH|awk '{if($6==1) print $0}'|wc -l` latest_count=`tail -n $2 $LOG_PATH|grep $1|awk '{if($6==1) print $0}'|wc -l` if [[ $all_count -eq 1 && $latest_count -eq 1 ]];then do_sendmail $1 $3 $4 fi } check_item=9 check_ifoverload MEM $check_item $MEM_NOW'%' $MEM_RATE'%' check_ifoverload CPU $check_item $CPU_NOW'%' $CPU_RATE'%' check_ifoverload DISK $check_item $DISK_NOW'%' $DISK_RATE'%' check_ifoverload ESTABLISHED $check_item $ESTABLISHED_NOW $ESTABLISHED check_ifoverload TIME_WAIT $check_item $TIME_WAIT_NOW $TIME_WAIT check_ifoverload FLOWIN_MB $check_item $FLOWIN_MB_NOW $FLOWIN_MB check_ifoverload FLOWOUT_MB $check_item $FLOWOUT_MB_NOW $FLOWOUT_MB done
原创文章，作者：Maggie-Hunter，如若转载，请注明出处：https://blog.ytso.com/2064.html