collectd-init

#! /bin/bash
#
# collectd - start and stop the statistics collection daemon
# http://collectd.org/
#
# Copyright (C) 2005-2006 Florian Forster <octo@verplant.org>
# Copyright (C) 2006-2009 Sebastian Harl <tokkee@debian.org>
#

### BEGIN INIT INFO
# Provides:          collectd
# Required-Start:    $local_fs $remote_fs
# Required-Stop:     $local_fs $remote_fs
# Should-Start:      $network $named $syslog $time
# Should-Stop:       $network $named $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: start the statistics collection daemon
### END INIT INFO

set -e

PATH=/sbin:/bin:/usr/sbin:/usr/bin

DISABLE=0

DESC="statistics collection and monitoring daemon"
NAME=collectd
DAEMON=/usr/sbin/collectd

CONFIGFILE=/etc/collectd/collectd.conf
PIDFILE=/var/run/collectd.pid

USE_COLLECTDMON=1
COLLECTDMON_DAEMON=/usr/sbin/collectdmon
COLLECTDMON_PIDFILE=/var/run/collectdmon.pid

MAXWAIT=30

# Gracefully exit if the package has been removed.
test -x $DAEMON || exit 0

if [ -r /etc/default/$NAME ]; then
        . /etc/default/$NAME
fi

if test "$DISABLE" != 0 -a "$1" == "start"; then
        echo "$NAME has been disabled - see /etc/default/$NAME."
        exit 0
fi

if test ! -e "$CONFIGFILE" -a "$1" == "start"; then
        echo "Not starting $NAME - no configuration ($CONFIGFILE) found."
        exit 0
fi

if test "$ENABLE_COREFILES" == 1; then
        ulimit -c unlimited
fi

if test "$USE_COLLECTDMON" == 1; then
        _PIDFILE="$COLLECTDMON_PIDFILE"
else
        _PIDFILE="$PIDFILE"
fi

check_config() {
        if ! $DAEMON -t -C "$CONFIGFILE"; then
                if test -n "$1"; then
                        echo "$1" >&2
                fi
                exit 1
        fi
}

d_start() {
        if test "$DISABLE" != 0; then
                # we get here during restart
                echo -n " - disabled by /etc/default/$NAME"
                return 0
        fi

        if test ! -e "$CONFIGFILE"; then
                # we get here during restart
                echo -n " - no configuration ($CONFIGFILE) found."
                return 0
        fi

        check_config

        if test "$USE_COLLECTDMON" == 1; then
                start-stop-daemon --start --quiet --oknodo --pidfile "$_PIDFILE" \
                        --exec $COLLECTDMON_DAEMON -- -P "$_PIDFILE" -- -C "$CONFIGFILE"
        else
                start-stop-daemon --start --quiet --oknodo --pidfile "$_PIDFILE" \
                        --exec $DAEMON -- -C "$CONFIGFILE" -P "$_PIDFILE"
        fi
}

still_running_warning="
WARNING: $NAME might still be running.
In large setups it might take some time to write all pending data to
the disk. You can adjust the waiting time in /etc/default/collectd."

d_stop() {
        PID=$( cat "$_PIDFILE" 2> /dev/null ) || true

        start-stop-daemon --stop --quiet --oknodo --pidfile "$_PIDFILE"

        sleep 1
        if test -n "$PID" && kill -0 $PID 2> /dev/null; then
                i=0
                while kill -0 $PID 2> /dev/null; do
                        i=$(( $i + 2 ))
                        echo -n " ."

                        if test $i -gt $MAXWAIT; then
                                echo "$still_running_warning" >&2
                                return 1
                        fi

                        sleep 2
                done
                return 0
        fi
}

d_status() {
        PID=$( cat "$_PIDFILE" 2> /dev/null ) || true

        if test -n "$PID" && kill -0 $PID 2> /dev/null; then
                echo "collectd ($PID) is running."
                exit 0
        else
                PID=$( pidof collectd ) || true

                if test -n "$PID"; then
                        echo "collectd ($PID) is running."
                        exit 0
                else
                        echo "collectd is stopped."
                fi
        fi
        exit 1
}

case "$1" in
        start)
                echo -n "Starting $DESC: $NAME"
                d_start
                echo "."
                ;;
        stop)
                echo -n "Stopping $DESC: $NAME"
                d_stop
                echo "."
                ;;
        status)
                d_status
                ;;
        restart|force-reload)
                echo -n "Restarting $DESC: $NAME"
                check_config "Not restarting collectd."
                d_stop
                sleep 1
                d_start
                echo "."
                ;;
        *)
                echo "Usage: $0 {start|stop|restart|force-reload|status}" >&2
                exit 1
                ;;
esac

exit 0

# vim: syntax=sh noexpandtab sw=4 ts=4 :
##############################

Hey this seems to be missing the modifications you mentioned to enable collectd to run from /opt/ I've taken a shot at modifying your gist here https://gist.github.com/rycudasakkran/24f98d276e87b87ba79a which seems to work from my (very basic) testing.