CMDB学习之二数据采集

首先也要调用插件的方式，来写采集数据插件，在src目录下创建一个插件 plugins ，然后在plugins下创建disk.py ,memory.py, network.py等等

　　src

　　　　plugins

　　

在disk.py 

#获取采集，执行采集命令是cmd 是统一的我直接写agent中进行调用
def get_disk(handler,hostname):
    return handler.cmd("dir",hostname)

agent代码

from .base import BaseHandler
from src.plugins.disk import get_disk


class AgnetHandler(BaseHandler):

    def cmd(self,command,hostname=None):
        import subprocess
        return subprocess.getoutput(command)

    def handler(self):
        """
        Agent模式下处理资产采集:硬盘、内存、网卡
        :return:
        """
        print('agent模式')
        #调用pulugins.disk /plugins.momory /plugins.nerwork
        disk = get_disk(self)
        print(disk)

 salt.py

from .base import BaseHandler

class SaltHandler(BaseHandler):

    def cmd(self, command, hostname=None):
        """
        调用saltstack远程连接主机并执行命令（saltstack的master）
        :param hostname:主机名
        :param command: 要执行的命令
        :return:
        """
        import salt.client #安装salt
        local = salt.client.LocalClient()
        result = local.cmd(hostname, 'cmd.run', [command])
        return result[hostname]

    def handler(self):
        """
        Salt模式下处理资产采集
        :return:
        """
        print('salt模式')

ssh.py

from .base import BaseHandler
from config  import settings

class SSHHandler(BaseHandler):

    def cmd(self, command, hostname=None):
        """
        调用paramiko远程连接主机并执行命令，依赖rsa
        :param hostname:主机名
        :param command: 要执行的命令
        :return:
        """
        import paramiko

        private_key = paramiko.RSAKey.from_private_key_file(settings.SSH_PRIVATE_KEY)
        ssh = paramiko.SSHClient()
        ssh.set_missing_host_key_policy(paramiko.AutoAddPolicy())
        ssh.connect(hostname=hostname, port=settings.SSH_PORT, username=settings.SSH_USER, pkey=private_key)
        stdin, stdout, stderr = ssh.exec_command(command)
        result = stdout.read()
        ssh.close()
        return result
    def handler(self):
        """
        SSH模式下处理资产采集
        :return:
        """
        print('SSH模式')

配置settings

### #######################SSH模式的配置##########################

SSH_PRIVATE_KEY="私钥路径"
SSH_USER='cmdb'  #用户名
SSH_PORT='22'   #端口

进行cmd 命令的约束

class BaseHandler(object):

    def cmd(self,command,hostname=None):
        '''
         cmd约束派生类
        :return:
        '''
        raise NotImplementedError('cmd() must Implemented.')

    def handler(self):
        '''
        handler约束派生类
        :return:
        '''
        raise NotImplementedError('handler() must Implemented.')

 ##########################用法升级，插件写法，反射使用 #################

写配置文件，

　　

PLUGINS_DICT = {
    'disk':'src.plugins.disk.Disk',
    'memory':'src.plugins.memory.Memory',
    'network':'src.plugins.network.Network',
    'cpu':'src.plugins.cpu.CPU',
}

disk.py

class Disk(object):
    def process(self):
        '''
        执行命令拿到结果
        :return:
        '''
        return "硬盘"

memory.py

class Memory(object):
    def process(self):
        '''
        执行命令拿到结果
        :return:
        '''
        return "内存"

network.py

class Network(object):
    def process(self):
        '''
        执行命令拿到结果
        :return:
        '''
        return "网卡"

cpu.py

class CPU(object):
    def process(self):
        '''
        执行命令拿到结果
        :return:
        '''
        return "CPU"

 这里调用之前写好的反射lib 中的方法

from config import settings
from lib.module_srting import import_sting

def get_server_info():
    '''
    获取所有的资产信息并返回
    :return:
    '''
    info={}
    for name,path in settings.PLUGINS_DICT.items():
        cls=import_sting(path)
        obj = cls()
        info[name] = obj.process()

    return info

执行 agent写下测试

 ############################下面采集真实数据测试

使用agent的方式采集进行本地采集

agent.py

from .base import BaseHandler
from ..plugins import get_server_info


class AgnetHandler(BaseHandler):

    def cmd(self,command,hostname=None):
        import subprocess
        return subprocess.getoutput(command)

    def handler(self):
        """
        Agent模式下处理资产采集:硬盘、内存、网卡
        :return:
        """
        print('agent模式')
        #调用pulugins.disk /plugins.momory /plugins.nerwork
        ret = get_server_info(self)  #把自己传进去，agent默认没有主机所有不用hostname
        print(ret)

plugins-->__init__.py   执行命令的handler

from config import settings
from lib.module_srting import import_sting

def get_server_info(handler,hostname=None):
    '''
    获取所有的资产信息并返回
    :return:
    '''
    info={}
    for name,path in settings.PLUGINS_DICT.items():
        cls=import_sting(path)
        obj = cls()
        info[name] = obj.process(handler,hostname)

    return info

disk.py  ,memory.py ,cpu.py ,network.py   这里都是测试截取10个字符

class Disk(object):
    def process(self,handler,hostname):
        '''
        执行命令拿到结果磁盘
        :return:
        '''
        ret = handler.cmd('wmic diskdrive',hostname)[0:10]
        return ret

class CPU(object):
    def process(self,handler,hostname):
        '''
        执行命令拿到结果cpu
        :return:
        '''
        ret = handler.cmd('wmic cpu',hostname)[0:10]
        return ret

class Network(object):
    def process(self,handler,hostname):
        '''
        执行命令拿到结果网卡信息
        :return:
        '''
        ret = handler.cmd('ipconfig',hostname)[0:10]
        return ret

class Memory(object):
    def process(self,handler,hostname):
        '''
        执行命令拿到结果内存 测试截取10个字符
        :return:
        '''
        ret = handler.cmd('wmic memphysical list brief',hostname)[0:10]
        return ret