1. 获取ip、cpu、内存信息、loadAverage
ip使用ifconfig获得
localip=$(ifconfig eth0 | grep 'inet addr' | awk '{print $2}' | cut -f2 -d:)
空闲cpu由mpstat获得
cpuidle=$(mpstat | grep all | awk '{print $11}')
内存使用情况由free获得
freemem=$(free | grep Mem | awk '{print $4}')
totalmem=$(free | grep Mem | awk '{print $2}')
pcent=$(free | grep Mem | awk '{print $4/$2}')
loadAverage由uptime获得
loadavg1=$(uptime | awk '{print $10}' | cut -f1 -d,)
loadavg5=$(uptime | awk '{print $11}' | cut -f1 -d,)
loadavg15=$(uptime | awk '{print $12}')
- . /etc/profile
- AlertNginxCpu=50
- AlertNginxMem=50
- AlertPcent=0.5
- AlertCpu=50
- AlertLoad=1
- msg=
- Subject='服务器超载警报'
- mailto(){
- /application/search/sendmail.py "$Subject" "$msg"
- msg=
- Subject='服务器超载警报'
- }
- date=$(date)
- localip=$(/sbin/ifconfig eth0 | grep 'inet addr' | awk '{print $2}' | cut -f2 -d:)
- nginxcpu=$(ps axu|grep nginx |grep search | grep worker | awk '{print $3}')
- nginxmempcent=$(ps axu|grep nginx |grep search | grep worker | awk '{print $4}')
- nginxmem=$(ps axu|grep nginx |grep search | grep worker | awk '{print $6}')
- cpuidle=$(mpstat | grep all | awk '{print $11}')
- freemem=$(free | grep Mem | awk '{print $4}')
- totalmem=$(free | grep Mem | awk '{print $2}')
- freemempcent=$(free | grep Mem | awk '{print $4/$2}')
- freeswap=$(free | grep Swap | awk '{print $4}')
- totalswap=$(free | grep Swap | awk '{print $2}')
- freeswappcent=$(free | grep Swap | awk '{print $4/$2}')
- loadavg1=$(uptime | awk '{print $10}' | cut -f1 -d,)
- loadavg5=$(uptime | awk '{print $11}' | cut -f1 -d,)
- loadavg15=$(uptime | awk '{print $12}')
- echo $date
- echo $localip
- echo '空闲cpu:'$cpuidle
- echo '空闲内存:'$freemem
- echo '总内存:'$totalmem
- echo '空闲内存比:'$freemempcent
- echo '空闲交换内存:'$freeswap
- echo '总交换内存:'$totalswap
- echo '空闲交换内存比:'$freeswappcent
- echo $loadavg1
- echo $loadavg5
- echo $loadavg15
- alldata=''$date'| '$localip'| nginx:'$nginxcpu','$nginxmempcent'('$nginxmem')| cpu_idle:'$cpuidle'| Mem:'$freemem'/'$totalmem'='$freemempcent'| Swap:'$freeswap'/'$totalswap'='$freeswappcent'| loadavg:'$loadavg1','$loadavg5','$loadavg15''
- echo $alldata >> monitor.log
- if [ $(echo "$nginxcpu >= $AlertNginxCpu"|bc) = 1 ]; then
- msg=''$alldata'| nginx cpu'$nginxcpu':高于'$AlertNginxCpu''
- Subject=''$Subject':'$localip': nginx cpu'$nginxcpu'高于'$AlertNginxCpu''
- echo $msg >> monitor.log
- mailto
- fi
- if [ $(echo "$nginxmempcent >= $AlertNginxMem"|bc) = 1 ]; then
- msg=''$alldata'| nginx mem'$nginxmempcent':高于'$AlertNginxMem''
- Subject=''$Subject':'$localip': nginx mem'$nginxmempcent'高于'$AlertNginxMem''
- echo $msg >> monitor.log
- mailto
- fi
- if [ $(echo "$freeswappcent <= $AlertPcent"|bc) = 1 ]; then
- msg=''$alldata'| 剩余虚拟内存占比'$freeswappcent':低于'$AlertPcent''
- Subject=''$Subject':'$localip':剩余虚拟内存占比'$freeswappcent'低于'$AlertPcent''
- echo $msg >> monitor.log
- mailto
- fi
- if [ $(echo "$cpuidle <= $AlertCpu"|bc) = 1 ]; then
- msg=''$alldata'| cpu空闲时间'$cpuidle':低于'$AlertCpu''
- Subject=''$Subject':'$localip':cpu空闲时间'$cpuidle'低于'$AlertCpu''
- echo $msg >> monitor.log
- mailto
- fi
- if [ $(echo "$loadavg1 >= $AlertLoad"|bc) = 1 ]; then
- msg=''$alldata'| load'$loadavg1':高于'$AlertLoad''
- Subject=''$Subject':'$localip':load'$loadavg1'高于'$AlertLoad''
- echo $msg >> monitor.log
- mailto
- fi
- if [ -n $msg ];then
- echo '系统运行正常'
- fi
2. 空闲cpu小于cpu报警阈值或空闲内存比例低于内存报警阈值或loadAverage超过阈值时发送邮件报警
- #! /usr/bin/env python
- import smtplib
- import sys
- from email.mime.text import MIMEText
- mailto_list=[""]
- mail_host = "smtp.126.com"
- mail_user = "monitor_algo"
- mail_pass = ""
- mail_postfix="126.com"
- def send_mail(to_list, sub, context):
- me = mail_user + "<"+mail_user+"@"+mail_postfix+">"
- msg = MIMEText(context)
- msg['Subject'] = sub
- msg['From'] = me
- msg['To'] = ";".join(to_list)
- try:
- send_smtp = smtplib.SMTP()
- send_smtp.connect(mail_host)
- send_smtp.login(mail_user, mail_pass)
- send_smtp.sendmail(me, to_list, msg.as_string())
- send_smtp.close()
- return True
- except (Exception, e):
- print(str(e))
- return False
- if __name__=="__main__":
- # print ("start")
- # for a in range(1, len(sys.argv)):
- # print sys.argv[a]
- if (True == send_mail(mailto_list,sys.argv[1],sys.argv[2])):
- pass
- # print ("sucess")
- else:
- pass
- # print ("failed")
3. 加入crontab定时任务
注意一点,crontan中的环境变量与用户环境的环境变量不一样,因其不会从缺省的用户profile文件中读入环境变量参数,最简单的方法是用source命令(.)
*/1 * * * * . /etc/profile; sh /application/search/monitor.sh