python执行shell获取硬件参数写入mysql的方法

本文实例讲述了python执行shell获取硬件参数写入mysql的方法。分享给大家供大家参考。具体分析如下:

最近要获取服务器各种参数,包括cpu、内存、磁盘、型号等信息。试用了Hyperic HQ、Nagios和Snmp,它们功能都挺强大的,但是于需求不是太符,亦或者太heavy。

于是乎想到用python执行shell获取这些信息,python执行shell脚本有以下三种方法:

1. os.system()

os.system('ls')

#返回结果0或者1,不能得到命令的输出

2. os.popen()
output = os.popen('ls')

print output.read()

#打印出的是命令输出,但是得不到执行的返回值

3. commands.getstatusoutput()
(status, output) = commands.getstatusoutput('ls')

print status, output

#打印出返回值和命令输出

可以根据需要选取其中一种方法,以下是python执行shell获取硬件参数写入mysql,并定期更新的程序:


'''

Created on Dec 10, 2014

@author: liufei ''' #coding=utf-8 import time, sched, os, string from datetime import datetime import MySQLdb   s = sched.scheduler(time.time,time.sleep)

def event_func():     try:         #主机名         name = os.popen(""" hostname """).read()         #cpu数目         cpu_num = os.popen(""" cat /proc/cpuinfo | grep processor | wc -l """).read()         #内存大小         mem = os.popen(""" free | grep Mem | awk '{print $2}' """).read()         #机器品牌         brand = os.popen(""" dmidecode | grep 'Vendor' | head -1 | awk -F: '{print $2}' """).read()         #型号         model = os.popen(""" dmidecode | grep 'Product Name' | head -1 | awk -F: '{print $2}' """).read()         #磁盘大小         storage = os.popen(""" fdisk -l | grep 'Disk /dev/sd' | awk 'BEGIN{sum=0}{sum=sum+$3}END{print sum}' """).read()         #mac地址         mac = os.popen(""" ifconfig -a | grep HWaddr | head -1 | awk '{print $5}' """).read()                 name = name.replace("\n","").lstrip()         cpu_num =  cpu_num.replace("\n","").lstrip()         memory_gb = round(string.atof(mem.replace("\n","").lstrip())/1000.0/1000.0, 1)         brand = brand.replace("\n","").lstrip()         model = model.replace("\n","").lstrip()         storage_gb = storage.replace("\n","").lstrip()         mac = mac.replace("\n","").lstrip()                 print name         print cpu_num         print memory_gb         print storage_gb         print brand         print model         print mac             conn=MySQLdb.connect(host='xx.xx.xx.xx',user='USERNAME',passwd='PASSWORD',db='DBNAME',port=3306)         cur=conn.cursor()         cur.execute('select mac from servers where mac=%s',mac)         data = cur.fetchone()

        if data is None:             value = [name, brand, model, memory_gb, storage_gb, cpu_num, mac, datetime.now(), datetime.now()]             cur.execute("insert into servers(name, brand, model, memory_gb, storage_gb, cpu_num, mac,  created_at, updated_at) values(%s, %s, %s, %s, %s, %s, %s, %s, %s)",value)                    else:             value1 = [name, brand, model, memory_gb, storage_gb, cpu_num, datetime.now(), mac]             cur.execute("update servers set name=%s,brand=%s,model=%s,memory_gb=%s,storage_gb=%s,cpu_num=%s, updated_at=%s where mac=%s",value1)                    conn.commit()         cur.close()         conn.close()             except MySQLdb.Error,e:         print "Mysql Error %d: %s" % (e.args[0], e.args[1])     def perform(inc):     s.enter(inc,0,perform,(inc,))     event_func()     def mymain(inc=10):     s.enter(0,0,perform,(inc,))     s.run()   if __name__ == "__main__":     mymain()

希望本文所述对大家的Python程序设计有所帮助。