Etherpad-lite multiple sites/instances init script: etherpad-lite supports multiple settings.json files with the "-s" parameter on run.sh. I modified the init.d script to support multiple settings.json start up.

etherpad-lite-multiplesites-init.d

#!/bin/bash

### BEGIN INIT INFO
# Provides:          etherpad-lite
# Required-Start:    $local_fs $remote_fs $network $syslog
# Required-Stop:     $local_fs $remote_fs $network $syslog
# Default-Start:     2 3 4 5
# Default-Stop:      0 1 6
# Short-Description: starts etherpad lite
# Description:       starts etherpad lite using start-stop-daemon
### END INIT INFO

PATH="/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin:/opt/node/bin:/home/etherpad/local/node/bin"
LOGFILE="/var/log/etherpad-lite/etherpad-lite.log"
EPLITE_DIR="/home/etherpad/local/etherpad-lite"
EPLITE_BIN="/bin/safeRun.sh"
USER="etherpad"
GROUP="etherpad"
DESC="Etherpad Lite"
NAME="etherpad-lite"
settings=("settings.json" "settings.tsc.json")

set -e

. /lib/lsb/init-functions

start() {
  echo "Starting $DESC... "

  for padconf in "${settings[@]}"
   do
     if [[ -f /var/run/${NAME}_${padconf}.pid ]]; then
       echo 'Service already running' >&2
       return 1
    else
     start-stop-daemon --start --chuid "$USER:$GROUP" --background --make-pidfile --pidfile /var/run/"${NAME}"_"${padconf}".pid --exec $EPLITE_DIR/$EPLITE_BIN -- $LOGFILE -s ${padconf} || true
     echo "done - loaded " $padconf
     fi
   done
}

#We need this function to ensure the whole process tree will be killed
killtree() {
    local _pid=$1
    local _sig=${2-TERM}
    for _child in $(ps -o pid --no-headers --ppid "${_pid}"); do
        killtree "${_child}" "${_sig}"
    done
    kill "-${_sig}" "${_pid}"
}

stop() {
  echo "Stopping $DESC... "
  for padconf in "${settings[@]}"
    do
      if [[ -f /var/run/${NAME}_${padconf}.pid ]]; then
        PID=$(cat /var/run/${NAME}_${padconf}.pid)
        killtree "$PID" 15
        rm -f /var/run/${NAME}_${padconf}.pid
        echo "done - stopped " $padconf
      else
        printf "%s\n" "pidfile not found"
      fi
    done
}

status() {
  status_of_proc -p /var/run/${NAME}*.pid "" "etherpad-lite" && exit 0 || exit $?
}

case "$1" in
  start)
      start
      ;;
  stop)
    stop
      ;;
  restart)
      stop
      start
      ;;
  status)
      status
      ;;
  *)
      echo "Usage: $NAME {start|stop|restart|status}" >&2
      exit 1
      ;;
esac

exit 0