Ansible之动态Inventory

动态Inventory python代码
#! /usr/bin/env python3
import os
import sys
import argparse
try:
import json
except ImportError:
import simplejson as json
class ExampleInventory(object):
# 读取并分析读入的选项和参数
def read_cli_args(self):
parser = argparse.ArgumentParser()
parser.add_argument('--list', action='store_true')
parser.add_argument('--host', action='store')
self.args = parser.parse_args()
# 用于展示效果的JSON格式的Inventory文件内容
def example_inventory(self):
return {
'songxin': {
'hosts': ['10.3.150.199', '10.3.150.200','10.3.150.201','10.3.152.78'],
},
'_meta': {
'hostvars': {
'10.3.150.199': {
"ansible_ssh_user": "cedar",
"ansible_ssh_port": "52222"
},
'10.3.150.200': {
"ansible_ssh_user": "cedar",
"ansible_ssh_port": "52222"
},
'10.3.150.201': {
"ansible_ssh_user": "cedar",
"ansible_ssh_port": "52222"
},
'10.3.152.78': {
"ansible_ssh_user": "root",
"ansible_ssh_port": "22"
}
}
}
}
# 返回仅用于测试的空Inventory
def empty_inventory(self):
return {'_meta': {'hostvars': {}}}
def __init__(self):
self.inventory = {}
self.read_cli_args()
#定义'--list'选项
if self.args.list:
self.inventory = self.example_inventory()
#定义'--host[hostname]'先项
elif self.args.host:
self.inventory = self.empty_inventory()
#如果没有主机组或变量要设置，就返回一个空Inventory
else:
self.inventory = self.empty_inventory()
print(json.dumps(self.inventory))
ExampleInventory()