文章采集api Python CMDB开发
优采云 发布时间: 2020-08-24 18:44文章采集api Python CMDB开发
运维自动化路线:
cmdb的开发须要收录三部份功能:
执行流程:服务器的客户端采集硬件数据,然后将硬件信息发送到API,API负责将获取到的数据保存到数据库中,后台管理程序负责对服务器信息的配置和展示。
采集硬件信息
采集硬件信息可以有两种形式实现:
利用puppet中的report功能自己写agent,定时执行
两种形式的优缺点各异:方式一,优点是不需要在每台服务器上步一个agent,缺点是依赖于puppet,并且使用ruby开发;方式二,优点是用于python调用shell命令,学习成本低,缺点是须要在每台服务器上发一个agent。
方式一
默认情况下,puppet的client会在每半个小时联接puppet的master来同步数据,如果定义了report,那么在每次client和master同步数据时,会执行report的process函数,在该函数中定义一些逻辑,获取每台服务器信息并将信息发送给API
puppet中默认自带了5个report,放置在【/usr/lib/ruby/site_ruby/1.8/puppet/reports/】路径下。如果须要执行某个report,那么就在puppet的master的配置文件中做如下配置:
on master
/etc/puppet/puppet.conf
[main]
reports = store #默认
#report = true #默认
#pluginsync = true #默认
on client
/etc/puppet/puppet.conf
[main]
#report = true #默认
[agent]
runinterval = 10
server = master.puppet.com
certname = c1.puppet.com
如上述设置以后,每次执行client和master同步,就会在master服务器的 【/var/lib/puppet/reports】路径下创建一个文件,主动执行:puppet agent --test
所以,我们可以创建自己的report来实现cmdb数据的采集,创建report也有两种形式。
Demo 1
1、创建report
/usr/lib/ruby/site_ruby/1.8/puppet/reports/cmdb.rb
require 'puppet'
require 'fileutils'
require 'puppet/util'
SEPARATOR = [Regexp.escape(File::SEPARATOR.to_s), Regexp.escape(File::ALT_SEPARATOR.to_s)].join
Puppet::Reports.register_report(:cmdb) do
desc "Store server info
These files collect quickly -- one every half hour -- so it is a good idea
to perform some maintenance on them if you use this report (it's the only
default report)."
def process
certname = self.name
now = Time.now.gmtime
File.open("/tmp/cmdb.json",'a') do |f|
f.write(certname)
f.write(' | ')
f.write(now)
f.write("\r\n")
end
end
end
2、应用report
/etc/puppet/puppet.conf
[main]
reports = cmdb
#report = true #默认
#pluginsync = true #默认
Demo 2
1、创建report
在 /etc/puppet/modules 目录下创建如下文件结构:
modules└── cmdb ├── lib │ └── puppet │ └── reports │ └── cmdb.rb └── manifests └── init.pp
require 'puppet'
require 'fileutils'
require 'puppet/util'
SEPARATOR = [Regexp.escape(File::SEPARATOR.to_s), Regexp.escape(File::ALT_SEPARATOR.to_s)].join
Puppet::Reports.register_report(:cmdb) do
desc "Store server info
These files collect quickly -- one every half hour -- so it is a good idea
to perform some maintenance on them if you use this report (it's the only
default report)."
def process
certname = self.name
now = Time.now.gmtime
File.open("/tmp/cmdb.json",'a') do |f|
f.write(certname)
f.write(' | ')
f.write(now)
f.write("\r\n")
end
end
end
2、应用report
/etc/puppet/puppet.conf
[main]
reports = cmdb
#report = true #默认
#pluginsync = true #默认
方式二
使用python调用shell命令,解析命令结果并将数据发送到API
API
django中可以使用 Django rest framwork 来实现:
class Blog(models.Model):
title = models.CharField(max_length=50)
content = models.TextField()
modes.py
from django.contrib.auth.models import User
from rest_framework import routers, serializers, viewsets
from app02 import models
from rest_framework.decorators import detail_route, list_route
from rest_framework import response
from django.shortcuts import HttpResponse
# Serializers define the API representation.
class UserSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = User
fields = ('url', 'username', 'email', 'is_staff')
# ViewSets define the view behavior.
class UserViewSet(viewsets.ModelViewSet):
queryset = User.objects.all()
serializer_class = UserSerializer
# Serializers define the API representation.
class BlogSerializer(serializers.HyperlinkedModelSerializer):
class Meta:
model = models.Blog
depth = 1
fields = ('url','title', 'content',)
# ViewSets define the view behavior.
class BLogViewSet(viewsets.ModelViewSet):
queryset = models.Blog.objects.all()
serializer_class = BlogSerializer
@list_route()
def detail(self,request):
print request
#return HttpResponse('ok')
return response.Response('ok')
api.py
from django.conf.urls import patterns, include, url
from django.contrib import admin
from rest_framework import routers
from app02 import api
from app02 import views
# Routers provide an easy way of automatically determining the URL conf.
router = routers.DefaultRouter()
router.register(r'users', api.UserViewSet)
router.register(r'blogs', api.BLogViewSet)
urlpatterns = patterns('',
url(r'^', include(router.urls)),
url(r'index/', views.index),
#url(r'^api-auth/', include('rest_framework.urls', namespace='rest_framework'))
)
urls.py
from django.shortcuts import render
from rest_framework.decorators import api_view
from rest_framework.response import Response
# Create your views here.
@api_view(['GET', 'PUT', 'DELETE','POST'])
def index(request):
print request.method
print request.DATA
return Response([{'asset': '1','request_hostname': 'c1.puppet.com' }])
views
后台管理页面
后台管理页面须要实现对数据表的增删改查。
问题:
1、paramiko执行sudo