setup-nut-netclient

#!/bin/bash

# simple script to setup a NUT netclient config
# assumptions are Ubuntu 14.04.1, and that the nut server has only one UPS attached
# and is accessible by an already configured nut user+pass.

read -e -p "Do you wish to install and configure NUT from scratch (y/n): " -i "y" SETUP_NUT
echo

if [ ! "$SETUP_NUT" = "y" ]; then
  echo "OK exiting script"
  exit -1
fi


if ! dpkg -s nut >/dev/null; then
  echo "installing nut package"
  sudo apt-get install -q nut

  # Get the ups and server name as well as the nut user credentials needed
  echo "Pleae input the following info"
  read -e -p "Nut SERVER NAME or IP ADDRESS (needed to construct the local MONITOR line): " -i "nutserver" NUT_SERVER
  read -e -p "The nut UPS NAME you wish to monitor on the above server: " -i "ups" UPS_NAME
  read -e -p "Nut servers MONITOR USER (defined in /etc/nut/upsd.users): " -i "monmaster" NUT_USER
  read -e -p "and the monitor users PASSWORD: " -i "mmpass" USER_PASS

  # most basic of sanity checks (are any of the above empty if so exit script  
  if [ -z "$NUT_SERVER" ]; then echo "No server name given. Exiting."; exit -1; fi
  if [ -z "$UPS_NAME" ]; then echo "No ups name given. Exiting."; exit -1; fi 
  if [ -z "$NUT_USER" ]; then echo "No username given. Exiting."; exit -1; fi
  if [ -z "$USER_PASS" ]; then echo "No password given. Exiting."; exit -1; fi

  # now to construct the MONITOR line from the above info and put it on the end of /etc/nut/upsmon.conf
  echo "MONITOR $UPS_NAME@$NUT_SERVER 1 $NUT_USER $USER_PASS slave" | sudo tee -a /etc/nut/upsmon.conf >/dev/null

  # now to replace the MODE=none with MODE=netclient in nut.conf
  sudo sed -i 's/MODE=none/MODE=netclient/g' /etc/nut/nut.conf

  echo "starting nut-client"
  sudo /etc/init.d/nut-client restart

  # fsd is normally called when a ups is OB (On Battery) and LB (Low Battery)
  # fsd = Full Shut Down

  echo "the following command should list current information about your ups"
  echo "upsc $UPS_NAME@$NUT_SERVER"

  echo "To test this setup it is best to reboot first then execute the following command"
  echo "sudo upsmon -c fsd"
  echo "If all is functioning correctly this will simulate the ups being in both the following states:"
  echo "On Battery (OB) & Low Battery (LB)"
  echo "In that situation the system should perform an automatic power-fail shutdown"

else
  echo "nut package already installed, please consider removing nut first"
  echo "as this script expects to install and configure nut itself"
  echo "sudo apt-get purge nut"
  echo "N.B. WARNING this will remove all previous configurations"
fi