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arp_ip.py
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arp_ip.py
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#!/usr/bin/env python
#https://adamj.eu/tech/2016/12/04/writing-a-custom-ansible-dynamic-inventory-script/ (Modified a bit)
# -*- coding:utf-8 -*-
from __future__ import (absolute_import, division, print_function,
unicode_literals)
import json
import socket
import subprocess
import pprint
def main():
for dyn in inventory():
print(json.dumps(dyn,sort_keys=True, indent=2))
def inventory():
ips = find_pi()
json_list = []
for ip in ips:
xyz = {
'all': {
'hosts': [ip],
'vars': {},
},
'_meta': {
'hostvars': {
ip: {
'ansible_ssh_user': 'ansible',
}
},
},
'ansible': [ip]
}
json_list.append(xyz)
return json_list
def find_pi():
ip_address = []
for ip in all_local_ips():
if port_22_is_open(ip):
ip_address.append(str(ip))
return ip_address
def all_local_ips():
lines = subprocess.check_output(['arp', '-a']).split('\n')
for line in lines:
if '(' not in line:
continue
after_open_bracket = line.split('(')[1]
ip = after_open_bracket.split(')')[0]
yield ip
def port_22_is_open(ip):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.settimeout(3)
result = sock.connect_ex((ip, 22))
return result == 0
if __name__ == '__main__':
main()