Shell腳本+jstat+crontab+curl 監控JVM發送短信
#!/bin/bash
## 定時監控本機器下所有java應用的 JVM信息
# 定時任務配置
# crontab -e
# 寫入如下,5分鐘執行一次檢測
# */5 * * * * /home/admin/monitor-jstat.sh >> /data/logs/monitor/monitor.log 2>&1
#導入環境變量,需要查看當前的用戶的環境變量,否則會出現jps ifconfig環境變量不可用錯誤提示
export PATH=$PATH:/usr/local/bin:/usr/bin:/usr/local/sbin:/usr/sbin:/data/jdk1.8.0_181/bin:/home/admin/.local/bin:/home/admin/bin
# 老年代告警閾值
oldwarn="99000"
# 元空間(永久代)告警閾值
metawarn="99900"
# 手機號碼,多個用逗號隔開
mobile="17727821863"
# 短信發送url地址
sendsms="http://api.pureh2b.com/dreamWebSms/batchSend"
jsonhead="Content-type:application/json"
## 當前日期
sysdate=`date`
## 當前服務器IP地址
addr=`ifconfig -a|grep -w inet|grep -v 127.0.0.1|grep -v 172.16.1.1|awk '{print $2}'|cut -d : -f 2`
for pid in `jps -v |grep -v Jps |grep -v logstash-watch-collection |awk '{print $1}'`
do
## 應用名稱
name=`jps -v |grep -v Jps |grep -v logstash-watch-collection |grep $pid |awk '{print $2}'`
#jvm內存監控
#echo "##################開始Java應用:${name}內存監控############################"
#echo "監控日期: $sysdate"
#echo "進程PID: $pid"
#echo "進程名稱: $name"
#echo "當前服務器IP: $addr"
# 堆棧信息
jstat=$(jstat -gcutil ${pid})
#echo -e "jstat: \n $jstat"
#S0=$(echo ${jstat}|sed -n '2p' |awk '{print $1}')
#S0=$(echo ${jstat}|awk '{print $12}')
#echo $S0
# 新生代
eden=$(echo ${jstat}|awk '{print $14}')
from=$(echo ${jstat}|awk '{print $12}')
tospc=$(echo ${jstat}|awk '{print $13}')
# 老年代
oldge=$(echo ${jstat}|awk '{print $15}')
# 永久代 JDK8已經廢棄改用 元空間代替
meta=$(echo ${jstat}|awk '{print $16}')
#echo "Eden Space: ${eden}%"
#echo "From Space: ${from}%"
#echo "To Space: ${tospc}%"
#echo "Old Generation: ${oldge}%"
#echo "Meta Space: ${meta}%"
## 將讀取到的各區的值*1000,以便做下一次的比較操作
#eden1=`gawk -v x=$eden -v y=1000 'BEGIN{printf "%.0f\n",x*y}'`
#from1=`gawk -v x=$from -v y=1000 'BEGIN{printf "%.0f\n",x*y}'`
#tospc1=`gawk -v x=$tospc -v y=1000 'BEGIN{printf "%.0f\n",x*y}'`
oldge1=`gawk -v x=$oldge -v y=1000 'BEGIN{printf "%.0f\n",x*y}'`
meta1=`gawk -v x=$meta -v y=1000 'BEGIN{printf "%.0f\n",x*y}'`
#echo "Eden*100 Space: ${eden1}"
#echo "From*100 Space: ${from1}"
#echo "To*100 Space: ${tospc1}"
#echo "Old*100 Generation: ${oldge1}"
#echo "Meta*1000 Space: ${meta1}"
#if [ ${eden1} -ge "99999" ]
#then
#jvm=$jvm+${name}+":Eden Space:"+${eden}+"%超閥值 "
#fi
#if [ ${from1} -ge "99999" ]
#then
#jvm=$jvm+${name}+":From Space:"+${from}+"%超閥值 "
#fi
#if [ ${tospc1} -ge "99999" ]
#then
#jvm=$jvm+${name}+":To Space:"+${topspc}+"%超閥值 "
#fi
# 僅監控 老年代和元空間,超過90以上報警
jvm=
if [ ${oldge1} -ge ${oldwarn} ]
then
jvm="${jvm}[老年代 ${oldge}%超閥值]"
fi
if [ ${meta1} -ge ${metawarn} ]
then
jvm="${jvm}[元空間(永久代) ${meta}%超閾值]"
fi
if [ ! -n "$jvm" ]
then
echo "應用:${name}-JVM信息正常"
else
jvm="應用${name}的JVM告警信息:${jvm}"
echo "監控日期: $sysdate"
echo "進程PID: $pid"
echo "進程名稱: $name"
echo "當前服務器IP: $addr"
echo $jvm
#echo "JVM告警信息:${jvm}"
smsContent='{"mobile":"'$mobile'","content":"'$jvm'","userid":"WL0001","pwd":"123456"}'
#echo "JVM告警發送短信內容: ${smsContent}"
# -s 不輸出請求信息
smsResult=$(curl -H ${jsonhead} -X POST -s -d "${smsContent}" ${sendsms})
#echo "短信返回結果:${smsResult}"
fi
#echo "##################結束Java應用:${name}內存監控############################"
done