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
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
(status, output) = commands.getstatusoutput('ls') print status, output #打印出返回值和命令输出
''' 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。