Proxy load balancing

2 Sep 2014

      Hello,

I'm working to setup a proxy load balance to 3 production RADIUS servers
from a CentOS server running freeradius 2.1.12.  I believe I have the
proxy.conf file setup correctly but there seems to be no load balancing.
 All the requests are going to one of the three servers.  I have attached
the proxy.conf file and also the radius debug.  I don't see any errors, it
just appears the client-balance is not working.  Clients are using MAB and
are matching the NULL realm.  I have looked through all the past posts and
can't seem to find an answer.  Am I missing something in my configuration?

Thanks.

 # -*- text -*-
##
## proxy.conf -- proxy radius and realm configuration directives
##
## $Id$

#######################################################################
#
#  Proxy server configuration
#

proxy server {
default_fallback = no
}

home_server server0007 {
type = auth+acct
ipaddr = xxx.xxx.xxx.150
 port = 1812
secret = secret
}
home_server server0011 {
type = auth+acct
 ipaddr = xxx.xxx.xxx.152
port = 1812
secret = secret
}
home_server server0012 {
type = auth+acct
ipaddr = xxx.xxx.xxx.153
port = 1812
 secret = secret
}

home_server localhost {
type = auth
ipaddr = 127.0.0.1
 port = 1812
secret = secret
require_message_authenticator = yes
 response_window = 20
zombie_period = 40
revive_interval = 120
 status_check = status-server
check_interval = 30
num_answers_to_alive = 3
 max_outstanding = 65536
coa {
irt = 2
mrt = 16
 mrc = 5
mrd = 30
}
}

home_server_pool auth_loadbalance {
type = client-balance
home_server = server0007
home_server = server0011
 home_server = server0012
}

realm example.com {
pool = auth_loadbalance
}

realm LOCAL {
}

realm NULL {
type = radius
pool = auth_loadbalance
        secret          = secret
}

realm DEFAULT {
type = radius
pool = auth_loadbalance
        secret          = secret
}

______________________________________________________________

FreeRADIUS Version 2.1.12, for host x86_64-redhat-linux-gnu, built on Oct
 3 2012 at 01:22:51
Copyright (C) 1999-2009 The FreeRADIUS server project and contributors.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.
You may redistribute copies of FreeRADIUS under the terms of the
GNU General Public License v2.
Starting - reading configuration files ...
including configuration file /etc/raddb/radiusd.conf
including configuration file /etc/raddb/proxy.conf
including configuration file /etc/raddb/clients.conf
including files in directory /etc/raddb/modules/
including configuration file /etc/raddb/modules/replicate
including configuration file /etc/raddb/modules/logintime
including configuration file /etc/raddb/modules/otp
including configuration file /etc/raddb/modules/files
including configuration file /etc/raddb/modules/detail
including configuration file /etc/raddb/modules/chap
including configuration file /etc/raddb/modules/cui
including configuration file /etc/raddb/modules/digest
including configuration file /etc/raddb/modules/realm
including configuration file /etc/raddb/modules/exec
including configuration file /etc/raddb/modules/attr_rewrite
including configuration file /etc/raddb/modules/detail.log
including configuration file /etc/raddb/modules/checkval
including configuration file /etc/raddb/modules/pam
including configuration file /etc/raddb/modules/linelog
including configuration file /etc/raddb/modules/expiration
including configuration file /etc/raddb/modules/sql_log
including configuration file /etc/raddb/modules/pap
including configuration file /etc/raddb/modules/rediswho
including configuration file /etc/raddb/modules/preprocess
including configuration file /etc/raddb/modules/inner-eap
including configuration file /etc/raddb/modules/sradutmp
including configuration file /etc/raddb/modules/wimax
including configuration file /etc/raddb/modules/expr
including configuration file /etc/raddb/modules/unix
including configuration file /etc/raddb/modules/attr_filter
including configuration file /etc/raddb/modules/policy
including configuration file /etc/raddb/modules/smsotp
including configuration file /etc/raddb/modules/passwd
including configuration file /etc/raddb/modules/acct_unique
including configuration file /etc/raddb/modules/ntlm_auth
including configuration file /etc/raddb/modules/mac2ip
including configuration file /etc/raddb/modules/smbpasswd
including configuration file /etc/raddb/modules/opendirectory
including configuration file /etc/raddb/modules/soh
including configuration file /etc/raddb/modules/dynamic_clients
including configuration file /etc/raddb/modules/mschap
including configuration file /etc/raddb/modules/etc_group
including configuration file /etc/raddb/modules/perl
including configuration file /etc/raddb/modules/sqlcounter_expire_on_login
including configuration file /etc/raddb/modules/always
including configuration file /etc/raddb/modules/counter
including configuration file /etc/raddb/modules/mac2vlan
including configuration file /etc/raddb/modules/detail.example.com
including configuration file /etc/raddb/modules/SAConnector
including configuration file /etc/raddb/modules/redis
including configuration file /etc/raddb/modules/echo
including configuration file /etc/raddb/modules/radutmp
including configuration file /etc/raddb/modules/ippool
including configuration file /etc/raddb/eap.conf
including configuration file /etc/raddb/policy.conf
including files in directory /etc/raddb/sites-enabled/
including configuration file /etc/raddb/sites-enabled/default
including configuration file /etc/raddb/sites-enabled/control-socket
main {
user = "radiusd"
group = "radiusd"
 allow_core_dumps = no
}
including dictionary file /etc/raddb/dictionary
main {
name = "radiusd"
 prefix = "/usr"
localstatedir = "/var"
sbindir = "/usr/sbin"
 logdir = "/var/log/radius"
run_dir = "/var/run/radiusd"
libdir = "/usr/lib64/freeradius"
 radacctdir = "/var/log/radius/radacct"
hostname_lookups = no
max_request_time = 30
 cleanup_delay = 5
max_requests = 1024
pidfile = "/var/run/radiusd/radiusd.pid"
 checkrad = "/usr/sbin/checkrad"
debug_level = 0
proxy_requests = yes
 log {
stripped_names = no
auth = no
auth_badpass = no
 auth_goodpass = no
 }
 security {
max_attributes = 200
reject_delay = 1
 status_server = yes
 }
}
radiusd: #### Loading Realms and Home Servers ####
 proxy server {
retry_delay = 5
 retry_count = 3
default_fallback = no
dead_time = 120
 wake_all_if_all_dead = no
 }
 home_server server0007 {
ipaddr = xxx.xxx.xxx.150
port = 1812
 type = "auth+acct"
secret = "secret"
response_window = 30
 max_outstanding = 65536
zombie_period = 40
status_check = "none"
 ping_interval = 30
check_interval = 30
num_answers_to_alive = 3
 num_pings_to_alive = 3
revive_interval = 300
status_check_timeout = 4
 }
 home_server server0011 {
ipaddr = xxx.xxx.xxx.152
port = 1812
type = "auth+acct"
 secret = "secret"
response_window = 30
max_outstanding = 65536
 zombie_period = 40
status_check = "none"
ping_interval = 30
 check_interval = 30
num_answers_to_alive = 3
num_pings_to_alive = 3
 revive_interval = 300
status_check_timeout = 4
 }
 home_server server0012 {
ipaddr = xxx.xxx.xxx.153
 port = 1812
type = "auth+acct"
secret = "secret"
 response_window = 30
max_outstanding = 65536
zombie_period = 40
 status_check = "none"
ping_interval = 30
check_interval = 30
 num_answers_to_alive = 3
num_pings_to_alive = 3
revive_interval = 300
 status_check_timeout = 4
 }
 home_server_pool auth_loadbalance {
type = client-balance
 home_server = server0007
home_server = server0011
home_server = server0012
 }
 realm example.com {
pool = auth_loadbalance
 }
 realm LOCAL {
 }
 realm NULL {
 pool = auth_loadbalance
WARNING: Ignoring old-style configuration entry "secret" in realm "NULL"
 }
 realm DEFAULT {
 pool = auth_loadbalance
WARNING: Ignoring old-style configuration entry "secret" in realm "DEFAULT"
 }
radiusd: #### Loading Clients ####
 client localhost {
ipaddr = 127.0.0.1
require_message_authenticator = no
secret = "secret"
 nastype = "other"
 }
 client xxx.xxx.xxx.116 {
require_message_authenticator = no
 secret = "secret"
shortname = "shortname"
 }
 client xxx.xxx.xxx.137 {
 require_message_authenticator = no
secret = "secret"
shortname = "othershortname"
 }
radiusd: #### Instantiating modules ####
 instantiate {
 Module: Linked to module rlm_exec
 Module: Instantiating module "exec" from file /etc/raddb/modules/exec
  exec {
wait = no
input_pairs = "request"
shell_escape = yes
  }
 Module: Linked to module rlm_expr
 Module: Instantiating module "expr" from file /etc/raddb/modules/expr
 Module: Linked to module rlm_expiration
 Module: Instantiating module "expiration" from file
/etc/raddb/modules/expiration
  expiration {
reply-message = "Password Has Expired  "
  }
 Module: Linked to module rlm_logintime
 Module: Instantiating module "logintime" from file
/etc/raddb/modules/logintime
  logintime {
reply-message = "You are calling outside your allowed timespan  "
minimum-timeout = 60
  }
 }
radiusd: #### Loading Virtual Servers ####
server { # from file /etc/raddb/radiusd.conf
 modules {
  Module: Creating Auth-Type = digest
  Module: Creating Post-Auth-Type = REJECT
 Module: Checking authenticate {...} for more modules to load
 Module: Linked to module rlm_pap
 Module: Instantiating module "pap" from file /etc/raddb/modules/pap
  pap {
 encryption_scheme = "auto"
auto_header = no
  }
 Module: Linked to module rlm_chap
 Module: Instantiating module "chap" from file /etc/raddb/modules/chap
 Module: Linked to module rlm_mschap
 Module: Instantiating module "mschap" from file /etc/raddb/modules/mschap
  mschap {
use_mppe = yes
require_encryption = no
require_strong = no
 with_ntdomain_hack = no
allow_retry = yes
  }
 Module: Linked to module rlm_digest
 Module: Instantiating module "digest" from file /etc/raddb/modules/digest
 Module: Linked to module rlm_unix
 Module: Instantiating module "unix" from file /etc/raddb/modules/unix
  unix {
radwtmp = "/var/log/radius/radwtmp"
  }
 Module: Checking authorize {...} for more modules to load
 Module: Linked to module rlm_preprocess
 Module: Instantiating module "preprocess" from file
/etc/raddb/modules/preprocess
  preprocess {
huntgroups = "/etc/raddb/huntgroups"
 hints = "/etc/raddb/hints"
with_ascend_hack = no
ascend_channels_per_line = 23
 with_ntdomain_hack = no
with_specialix_jetstream_hack = no
with_cisco_vsa_hack = no
 with_alvarion_vsa_hack = no
  }
 Module: Linked to module rlm_realm
 Module: Instantiating module "suffix" from file /etc/raddb/modules/realm
  realm suffix {
format = "suffix"
delimiter = "@"
ignore_default = no
 ignore_null = no
  }
 Module: Linked to module rlm_files
 Module: Instantiating module "files" from file /etc/raddb/modules/files
  files {
usersfile = "/etc/raddb/users"
acctusersfile = "/etc/raddb/acct_users"
 preproxy_usersfile = "/etc/raddb/preproxy_users"
compat = "no"
  }
 Module: Checking preacct {...} for more modules to load
 Module: Linked to module rlm_acct_unique
 Module: Instantiating module "acct_unique" from file
/etc/raddb/modules/acct_unique
  acct_unique {
key = "User-Name, Acct-Session-Id, NAS-IP-Address, Client-IP-Address,
NAS-Port"
  }
 Module: Checking accounting {...} for more modules to load
 Module: Linked to module rlm_detail
 Module: Instantiating module "detail" from file /etc/raddb/modules/detail
  detail {
detailfile =
"/var/log/radius/radacct/%{%{Packet-Src-IP-Address}:-%{Packet-Src-IPv6-Address}}/detail-%Y%m%d"
header = "%t"
 detailperm = 384
dirperm = 493
locking = no
log_packet_header = no
  }
 Module: Linked to module rlm_radutmp
 Module: Instantiating module "radutmp" from file /etc/raddb/modules/radutmp
  radutmp {
filename = "/var/log/radius/radutmp"
 username = "%{User-Name}"
case_sensitive = yes
check_with_nas = yes
 perm = 384
callerid = yes
  }
 Module: Checking session {...} for more modules to load
 Module: Checking post-auth {...} for more modules to load
 } # modules
} # server
radiusd: #### Opening IP addresses and Ports ####
listen {
type = "auth"
 ipaddr = *
port = 1812
}
listen {
type = "control"
 listen {
socket = "/var/run/radiusd/radiusd.sock"
 }
}
 ... adding new socket proxy address * port 54463
 ... adding new socket proxy address * port 56731
 ... adding new socket proxy address * port 42048
 ... adding new socket proxy address * port 37161
 ... adding new socket proxy address * port 38652
 ... adding new socket proxy address * port 46065
Listening on authentication address * port 1812
Listening on command file /var/run/radiusd/radiusd.sock
Listening on proxy address * port 1814
Ready to process requests.

Proxy load balancing

Neil Carter