How to run multiple instance of freeRADIUS on one server

[Phil Mayers]

On 18/11/13 10:44, Kwesi Yankson wrote:
> Thank you Brian,
> I know it is possible. My concern is HOW TO DO IT. That's what I need
> help with.  Can you help?

Here's how I do it. Basically, use the "-n" argument to radiusd, ${} 
expansion, and a bit of $INCLUDE stuff to reduce typing.

1. Each server instance lives in "/etc/raddb/blah.conf" and looks like this:

# The next line is a marker for the init script:
# RADIUS INSTANCE

# per-process stuff goes here; reference it elsewhere
# with ${svopts.name} - see the next stop for examples
svopts {
   name = blah
   status_port = 10001
   num_threads = 10
   ...
}

# this file contains all the easy stuff - see next step
$INCLUDE common.conf

# load the various virtual servers
$INCLUDE sites-enabled/blah
$INCLUDE sites-enabled/blah-tunnel
$INCLUDE sites-enabled/status


2. We stick boring stuff in a "common.conf" file that uses variables 
from the "svopts". For example:

# paths
prefix = /usr
...

# NOTE: using a per-process PID file
pidfile = ${run_dir}/radiusd-${svopts.name}.pid

log {
     destination = files
     # NOTE: per-proces logfile
     file = ${logdir}/radius-${svopts.name}.log
     ...
}


thread pool {
         start_servers = ${svopts.num_threads}
         max_servers = ${svopts.num_threads}
}


3. We have a custom init script that basically does this:

start() {
   for instance in `egrep -l '^# RADIUS INSTANCE' /etc/raddb/*.conf`
   do
     NAME=`basename $instance .conf`
     radiusd -d /etc/raddb -n $NAME
   done
}

stop() {
   for instance in `egrep -l '^# RADIUS INSTANCE' /etc/raddb/*.conf`
   do
     NAME=`basename $instance .conf`
     PID=`cat /var/run/radius/radiusd-$NAME.pid`
     [ -n "$PID" ] && kill $PID
   done
}