面向系统测试的一种ganglia指标扩展的方法

面向系统测试的一种ganglia指标扩展的方法

ganlia 和 nagios 等工具，是业界优秀的监控告警工具；这种工具主要是面向运维的，也可以用来进行性能稳定性的测试。

面对分布式系统测试，耗时都比较长，往往一台机器安装多套系统，影响监控指标的准确性。

下面是一种进行进程级别监控的方n法，可以通过扩展，集群的监控力度；同时将监控脚本加入告警，防止脚本异常退出（Nagios扩展另文描述）

GEngin.py：总体的引擎，根据conf下配置文件的配置项，轮询监控指标，调用gmetric广播出去

conf：目录中保存metrix配置文件，配置参数指标

flag：目录中仅保存一个flag文件，文件名就是任务名，监控指标将根据任务名分离，便于汇总统计对比

log： 目录中记录GEngin的log及每个指标收取脚本的log  

pid： GEngin的pid 为告警脚本使用

script： 指标收集的具体的脚本

cat conf/metrix.cfg:

YARN|ResourceManager|cpu|ResourceManager_cpu.py|ResourceManager_cpu.txt|int16|Percent|
YARN|ResourceManager|mem|ResourceManager_mem.py|ResourceManager_mem.txt|int16|Percent|
YARN|ResourceManager|lsof|ResourceManager_lsof.py|ResourceManager_lsof.txt|int16|Number|

ls flag/:

yarntestD001.flag

ll log/:

-rw-r--r-- 1 yarn users     168 Mar 19 20:02 yarntestD001_YARNResourceManagercputdw-10-16-19-91.txt
-rw-r--r-- 1 yarn users     168 Mar 19 20:02 yarntestD001_YARNResourceManagerlsoftdw-10-16-19-91.txt
-rw-r--r-- 1 yarn users     168 Mar 19 20:02 yarntestD001_YARNResourceManagermemtdw-10-16-19-91.txt

ll script/:

-rw-r--r-- 1 yarn users  882 Feb 28 17:20 ResourceManager_cpu.py
-rw-r--r-- 1 yarn users 1093 Feb 28 17:45 ResourceManager_lsof.py
-rw-r--r-- 1 yarn users  882 Feb 28 17:18 ResourceManager_mem.py

cat script/SAMPLE.py:

#!/usr/bin/env python
# coding=gbk
import sys
import os
import datetime
import time 

def CheckInput():
    "Check Input parameters , they should be a pysql file."
    if len(sys.argv) < 2 :
        print "Usage: " + sys.argv[0] + " FileNamePrefix "
        sys.exit()

if __name__== '__main__':
    CheckInput() # check parameter and asign PyFileName
    ## result file log to directory of LOG
    LogFile = open("log/"+sys.argv[1],'a') 
    
     
    res = "29"
    ## Interface to Gmetrix ,must be value:Value
    print "value:"+res
    
    ntime = str(time.strftime("%Y-%m-%d %X",time.localtime()))
    LogFile.write(ntime+" "+res+"\n")

    LogFile.close()

cat GEngin.py :

#!/usr/bin/env python
# coding=gbk
import sys
import os
import random
import datetime
import time
from time import sleep

def CheckInput():
    "Check Input parameters , they should be a pysql file."
    print "Usage : python ./" + sys.argv[0] 

    if not os.path.exists("conf/metrix.cfg"):
        print "Error : config file conf/metrix.cfg does not exsits ! "
        sys.exit()

    ## kill previous proc For restart
    if os.path.exists("pid/pid.txt"):
        pfile = open("pid/pid.txt",'r')
        for p in pfile:
            pid = p.strip()
            os.system("kill -9 "+pid)
        pfile.close()
        os.system("rm pid/pid.txt")
    pfile = open("pid/pid.txt",'a')
    pid = os.getpid()
    pfile.write(str(pid))  
    pfile.close()
        
if __name__== '__main__':
    CheckInput() # check parameter and asign PyFileName
    LogFile = open("log/"+sys.argv[0]+".log",'a')

    # File Prefix of logs
    filePre="noTask"
    for fi in os.listdir("flag"):
        if fi.endswith(".flag"):
            filePre=fi.split('.')[0].strip()

    # host name for gmetrix
    host=""
    f = os.popen("hostname")
    for res in f:
        if res.startswith("tdw"):
            host=res.strip()
    LogFile.write("******** Start task "+filePre+" monitoring *******\n")
    # Main Loop untile flag is null
    while True: 
        if len(os.listdir("flag")) < 1 or len(os.listdir("flag")) > 1:
            sleep(10)
            LogFile.write("Finish previous take "+filePre+"  .... No task ,Main loop .....\n")
            LogFile.flush()
            continue
        if len(os.listdir("flag")) == 1 and not os.path.exists("flag/"+filePre+".flag"):
            LogFile.write("Finish previous take "+filePre+".....\n")
            for fi in os.listdir("flag"):
                if fi.endswith(".flag"):
                    filePre=fi.split('.')[0].strip()
            LogFile.write("***** Start New Task "+filePre+" monitoring *******\n")

        # Deal with config metrix one by one
        insFile = open("conf/metrix.cfg",'r')
        for line in insFile:
            mGroup,mName,mItem,mShell,mFile,mUnit,mWeiht,nouse = line.split('|');
            outPutFile = filePre+"_"+mGroup+mName+mItem+host+".txt"
            value = ""
            
            if mShell.endswith(".py"):
                f = os.popen("python script/"+mShell+" "+outPutFile) 
                for res in f:
                    if res.startswith("value:"):
                        value=res.split(':')[1].strip()
                    else:
                        value="0"
                f.close()
            if mShell.endswith(".sh"):
                f = os.popen("script/"+mShell+" "+outPutFile)
                for res in f:
                    if res.startswith("value:"):
                        value=res.split(':')[1].strip()
                    else:
                        value="0"
                f.close()
            
            cmd = "gmetric -n "+mGroup+"_"+mName+"_"+mItem+" -v "+value+" -t "+mUnit+" -u "+mWeiht+" -S "+host+":"+host
            print cmd
            f = os.popen(cmd)
            
            ntime = str(time.strftime("%Y-%m-%d %X",time.localtime()))
            LogFile.write(ntime+" "+cmd+"\n")
    
        insFile.close()  
        LogFile.flush()
        if len(os.listdir("flag")) == 1 and os.path.exists("flag/"+filePre+".flag"):
            sleep(8)
        
    LogFile.close()

Ganglia 中显示的监控指标：

将运行的GEngin.py脚本加入监控，防止进程异常退出：