python执行shell获取硬件参数写入mysql的方法

2018-09-26 20:21

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  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()
复制代码 代码如下:os.system(ls)
#返回结果0或者1,不能得到命令的输出
2. os.popen()
复制代码 代码如下: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()
复制代码 代码如下:(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:

  复制代码 代码如下:

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

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)

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。


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