Radius - Run second instance as a service - Centos 6.8

Question

The server (Centos 6.8) already has a single instance of Radius running as a service.

I have created a second instance and am able to make it run successfully with:

radiusd -X -d /etc/raddb2

I now need to make this second instance run as a service.

I'm aware of the file /etc/chkserv.d/radiusd which contains

service[radiusd]=x,x,x,/etc/init.d/radiusd restart,radiusd,radiusd

...also in /etc/chkserv.d/chkservd.conf I have radius listed as:

radiusd:1

I have copied the file /etc/init.d/radiusd to /etc/init.d/radiusd2

These are the contents of radius2

#!/bin/sh
#
# radiusd Start/Stop the FreeRADIUS daemon
#
# chkconfig: - 88 10
# description: Extensible, configurable, high performance RADIUS server.

### BEGIN INIT INFO
# Provides: radiusd
# Required-Start: $network
# Required-Stop:
# Default-Start:
# Default-Stop:
# Should-Start: $time $syslog mysql ldap postgresql samba krb5-kdc
# Should-Stop:
# Short-Description: FreeRADIUS server
# Description: Extensible, configurable, high performance RADIUS server.
### END INIT INFO

# Source function library.
. /etc/rc.d/init.d/functions

prog=radiusd

[ -e /etc/sysconfig/$prog ] && . /etc/sysconfig/$prog

exec=${exec:=/usr/sbin/$prog}
config_dir=${config_dir:=/etc/raddb2}
config=${config:=$config_dir/radiusd.conf}
pidfile=${pidfile:=/var/run/$prog/$prog.pid}
lockfile=${lockfile:=/var/lock/subsys/radiusd}

start() {
    [ -x $exec ] || exit 5
    [ -f $config ] || exit 6
    echo -n $"Starting $prog: "
    daemon --pidfile $pidfile $exec -d $config_dir
    retval=$?
    echo
    [ $retval -eq 0 ] && touch $lockfile
    return $retval
}

stop() {
    echo -n $"Stopping $prog: "
    killproc -p $pidfile $prog
    retval=$?
    echo
    [ $retval -eq 0 ] && rm -f $lockfile
    return $retval
}

restart() {
    stop
    start
}

reload() {
    # radiusd may not be capable of a 100% configuration reload depending
    # on which loadable modules are in use, if sending the server a
    # HUP is not sufficient then use restart here instead. However, we
    # prefer by default to use HUP since it's what is usually desired.
    #
    # restart

    kill -HUP `pidofproc -p $pidfile $prog`
}

force_reload() {
    restart
}

rh_status() {
    # run checks to determine if the service is running or use generic status
    status -p $pidfile $prog
}

rh_status_q() {
    rh_status >/dev/null 2>&1
}


case "$1" in
    start)
        rh_status_q && exit 0
        $1
        ;;
    stop)
        rh_status_q || exit 0
        $1
        ;;
    restart)
        $1
        ;;
    reload)
        rh_status_q || exit 7
        $1
        ;;
    force-reload)
        force_reload
        ;;
    status)
        rh_status
        ;;
    condrestart|try-restart)
        rh_status_q || exit 0
        restart
        ;;
    *)
        echo $"Usage: $0 {start|stop|status|restart|condrestart|try-restart|reload|force-reload}"
        exit 2
esac
exit $?

...so far the only thing I have changed is the config_dir variable to raddb2 (where the 2nd instance of radius lives)

config_dir=${config_dir:=/etc/raddb2} 

I think I need to change

pidfile=${pidfile:=/var/run/$prog/$prog.pid}

to something like:

pidfile=${pidfile:=/var/run/$prog/$prog2.pid}

I'd be grateful if someone could tell if that is correct and what else I need to do to get this second instance up and running.