| 标题 | python执行shell获取硬件参数写入mysql的方法 |
| 范文 | 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() 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() 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() 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： 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 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() |
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