python脚本 + falcon数据 = 测算磁盘是否满足需求

手工计算

脚本 根据一天数据计算

脚本 根据三天数据计算

脚本如下

#!/usr/bin/env python
#-*- coding:utf8 -*-

import requests
import time
import json
import scipy
from scipy import stats

# reference
# http://www.bkjia.com/Pythonjc/834245.html # http://blog.csdn.net/cskchenshengkun/article/details/45790411 # http://www.168seo.cn/python/2379.html 
# 定义获得指定取件的数值
def getData(start,end,endpoint,counter,incr=0):
d = {
"start": start,
"end": end,
"cf": "AVERAGE",
"endpoint_counters": [
{
"endpoint": "%s"%endpoint,
"counter": "%s"%counter,
},
],
}

query_api = "http://ｘｘｘ:9966/graph/history"
r = requests.post(query_api, data=json.dumps(d))
#print r.text
a = json.loads(r.text)
#print a
valueinterval = (a[0]['Values'][1]['timestamp'] - a[0]['Values'][0]['timestamp'])/60
print valueinterval
list = []
for b in a[0]['Values']:
if b['value'] > 0:
list.append(b['value']/valueinterval)
else:
#print b['value']
pass
# 如果incr是1，那么再加一步骤，做个differ
if incr == 1:
list1 = []
for i in range(1,len(list)):
differValue = list[i] - list[i-1]
if differValue > 0:
list1.append(differValue)
#print list
#print list1
list = list1
return list

# 求 调和平均数
def getAvg(day,endpoint,metric,incr=0):
end = int(time.time())
start = end - 3600 * 24 * day
list = getData(start,end,endpoint,metric,incr)
#print "主机：%s 指标:%s的增长率是:"%(endpoint,metric),
#print "调和平均数：%s"%(stats.hmean(list))
return stats.hmean(list)
#return stats.gmean(list)

# 获取过去一天的数据
def userDefine(day,ips,metric,incr=0):
result = []
for ip in ips:
value = getAvg(day,ip,metric,incr)
result.append(value)
return result

ips = []
ips.append("10.0.100.85")
day = 3

result1 = []
metric = "df.bytes.used.percent/fstype=ext4,mount=/"
result1=userDefine(day,ips,metric,1)

result2 = []
metric = "df.bytes.used/fstype=ext4,mount=/"
result2=userDefine(day,ips,metric,1)

print ips

print result1

print result2

print """
| 主机 | 磁盘占用/分钟（%） | 磁盘占用/小时（%）| 磁盘占用/天（%）| 磁盘新增占用/分钟(Byte)| 磁盘新增占用/分钟(KByte) |磁盘新增占用/小时(KByte) | 存储7天需要（GByte） | 目前量可以维持几天 |
| -- | -- |-- |-- |-- |-- | -- |-- | -- |"""
for i in range(0,len(ips)):
print """| %s | %s | %s | %s | %s | %s | %s | %s | %s |"""%(ips[i],round(result1[i],5),round(result1[i],5)*60,round(result1[i],5)*1440,round(result2[i],2),round(result2[i],2)*60,round(result2[i],2)*1440, round(result2[i]*1440*7/1000/1000/1000,0),round(80/result1[i]/1440))