Support for Backup/ Fallback Radius Server or multiple radius server configuration

[lalitmsihra87]

Seems, multiple radius server configuration is not supported. Multiple radius server to fallback on other server in case of other radius are down..

Please suggest.

[steinsag]

I implemented it myself by iterating over list of servers as long as I don't receive a reply. Example:

import socket
import pyrad.packet
from pyrad.client import Client
from pyrad.dictionary import Dictionary

username = 'exampleUser'
password = 'TOP-PASSWORD'
secret = 'RADIUS-SECRET'
servers = ['server1', 'server2']
reply = None
response = []
for server in servers:
    srv = Client(server=server, secret=str.encode(secret), dict=Dictionary("dictionary.txt"))
    srv.timeout = 1
    srv.retries = 1

    # create request
    req = srv.CreateAuthPacket(code=pyrad.packet.AccessRequest,
                               User_Name=username)
    req["Password"] = req.PwCrypt(password)

    # send request
    try:
        reply = srv.SendPacket(req)
        break
    except pyrad.client.Timeout:
        response.append("Timeout exception for server {}".format(server))
        continue
    except socket.error:
        response.append("socket.error exception for server {}".format(server))
        continue

I hope, this helps.