python 通过ansible 获取服务器基本信息：
利用ansible的 setup 模块可以返回服务器的详细信息
所有的信息都是以字典的格式显示的
[root@e tmp]# ansible 192.168.137.152 -m setup
192.168.137.152 | SUCCESS => {
"ansible_facts": {
"ansible_all_ipv4_addresses": [
"192.168.137.152",
"192.168.137.156",
"172.17.42.1",
"192.168.122.1"
],
"ansible_all_ipv6_addresses": [
"fe80::20c:29ff:fe29:eb74",
"fe80::20c:29ff:fe29:eb7e",
"fe80::1c62:8ff:fe8d:e9a2"
],
"ansible_architecture": "x86_64"
..........2.利用subprocess模块执行命令，获取数据Disk、Memory、cpu等基础信息
#!/usr/bin/env python
#coding:utf-8
import json
import shlex
from subprocess import *
def server_info(ip):
cmd = "/usr/bin/ansible {ip} -m setup".format(ip=ip)
raw_info = subprocess.check_output(shlex.split(cmd)) # check_output函数在python2.7以后版本才存在
base_info = json.loads(raw_info.split('=>')[1])['ansible_facts']
cpu = base_info['ansible_processor_vcpus']
memory = round(int(base_info['ansible_memtotal_mb'])/1024.0,1)
disk_info = base_info['ansible_devices']
disk_volume = sum([int(disk_info[disk]['sectors'])*int(disk_info[disk]['sectorsize']) for disk in disk_info])/1024**3
hostname = base_info['ansible_hostname']
os = base_info['ansible_lsb']['description']
print cpu,memory,disk_info,disk_volume,hostname,os
if __name__=="__main__":
ip = "192.168.137.152"
sever_info(ip)
