CyberPower PowerPanel configuration set to gracefully attempt to dismount drives before signalling shutdown in event of UPS low battery

pwrstatd-lowbatt.sh

#!/bin/sh
echo "Warning: The UPS's battery power is not enough, system will be shutdown soon!" | wall

export RECEIPT_NAME
export RECEIPT_ADDRESS
export SENDER_ADDRESS

#
# If you want to receive event notification by e-mail, you must change 'ENABLE_EMAIL' item to 'yes'.
# Note: After change 'ENABLE_EMAIL' item, you must asign 'RECEIPT_NAME', 'RECEIPT_ADDRESS', and 
# 'SENDER_ADDRESS' three items as below for the correct information.
#

# Enable to send e-mail
ENABLE_EMAIL=yes

# Change your name at this itme.
RECEIPT_NAME="You"

# Change mail receiver address at this itme.
RECEIPT_ADDRESS=your.email@gmail.com

# Change mail sender address at this itme.
SENDER_ADDRESS=powerpanel@localhost

# Execute the 'pwrstatd-email.sh' shell script
if [ $ENABLE_EMAIL = yes ]; then
   /etc/powerpanel/pwrstatd-email.sh
fi

###########

# shutdown

function killproc () {
	proc=$1
	pkill -15 $proc
	sleep 2
	if [ `pgrep $proc | wc -l` -gt 0 ] ; then
		pkill -9 $proc
	fi
}

# kill processes that could be using RAID arrays
procs=('firefox' 'Discord' 'ssh' 'slack' 'spotify' 'clementine' 'chromium' 'bomi' 'bash')
for p in "${procs[@]}" ; do
	killproc $p
done

# shutdown via systemctl
systemctl poweroff

pwrstatd-powerfail.sh

#!/bin/sh
echo "Warning: Utility power failure has occurred for a while, system will be shutdown soon!" | wall

export RECEIPT_NAME
export RECEIPT_ADDRESS
export SENDER_ADDRESS

#
# If you want to receive event notification by e-mail, you must change 'ENABLE_EMAIL' item to 'yes'.
# Note: After change 'ENABLE_EMAIL' item, you must asign 'RECEIPT_NAME', 'RECEIPT_ADDRESS', and 
# 'SENDER_ADDRESS' three items as below for the correct information.
#

# Enable to send e-mail
ENABLE_EMAIL=yes

# Change your name at this itme.
RECEIPT_NAME="You"

# Change mail receiver address at this itme.
RECEIPT_ADDRESS=your.email@gmail.com

# Change mail sender address at this itme.
SENDER_ADDRESS=powerpanel@localhost

# Execute the 'pwrstatd-email.sh' shell script
if [ $ENABLE_EMAIL = yes ]; then
   /etc/powerpanel/pwrstatd-email.sh
fi

pwrstatd.conf

#
# pwrstatd configuration file
#

# You must restart pwrstatd after changing this file in order for changes to take effect.
# Ex:/etc/powerpanel/init.d/pwrstatd restart

#
# Action setting for event of Power Failure
#

# A delay time in seconds since event of Power Failure occur then to run shell
# script and shutdown system. Allowed range is 0 ~ 3600. Default is 60 sec. 
powerfail-delay = 60

# Enable to run shell script when the event of Power Failure occur.
# The allowed options are yes and no. Default is yes.
powerfail-active = yes

# Assign a path of script file for event of Power Failure.
# The default is /etc/powerpanel/pwrstatd-powerfail.sh
powerfail-cmd-path = /etc/powerpanel/pwrstatd-powerfail.sh

# How much time in seconds to take script running for event of Power Failure.
# The allowed range is 0 ~ 3600. Default is 0 sec. 
powerfail-duration = 0

# Allow Daemon to shutdown system for event of Power Failure.
# The allowed options are yes and no. Default is yes.
powerfail-shutdown = no

#                                      
# Action setting for event of Battery Low                                      
#                                                                              
                                       
## A threshold of Battery Capacity, If the battery capacity is lower than this
## value and a event of Battery Low will be identified. The unit is percentage.
## The allowed range is 0 ~ 90. Default is 35 %.                                

# 35% of 14 minutes is ~5 minutes                                              
lowbatt-threshold = 35                 
                                       
## A threshold of Remaining Runtime, If the Remaining Runtime is lower than this
## value and a event of Battery Low will be identified. The unit is second.
## The allowed range is 0 ~ 3600. Default is 300 sec.
## Note: When meet this condition the below 'shutdown-sustain' property
## will be ignored.                                    

# 7 minutes remaining capacity
runtime-threshold = 420 

## Turn UPS alarm on or off.                                                    
## The allowed options are yes and no. Default is yes.                          

enable-alarm = yes
                                       
## Enable to run shell script when the event of Battery Low occur.
## The allowed options are yes and no. Default is yes.

lowbatt-active = yes                   
                                       
## Assign a path of script file for event of Battery Low.
## The default is /etc/powerpanel/pwrstatd-lowbatt.sh

lowbatt-cmd-path = /etc/powerpanel/pwrstatd-lowbatt.sh

## Allow Daemon to shutdown system for event of Battery Low.                    
## The allowed options are yes and no. Default is yes.                          

lowbatt-shutdown = no                                                          
                                                           
## How much time in seconds to take script running for event of Battery Low.    
## The allowed range is 0 ~ 60. Default is 0 sec.                               

# after this amount of time elapses after script execution begins,
# shut down the system if lowbatt-shutdown is enabled
lowbatt-duration = 60
                                                                                                                     
## The necessary time in seconds for system shutdown.                           
## The UPS will turn power off when this time is expired.
## The allowed range is 0 ~ 3600. Default is 600 sec.(10 min.)
## If the computer shutdown is cause by low runtime condition, the UPS will
## turn power off when the time is expired that time is assigned on
## 'runtime-threshold' property and it is no longer to refer the
## 'shutdown-sustain' property.                                                 

# after the system is shut down (see lowbatt-duration and lowbatt-shutdown)
# this starts ticking. when it expires, or runtime-threshold is violated,
# the UPS is turned off
shutdown-sustain = 60
                                                                                                                                                              
## Daemon will turn UPS power off once it ask system shutdown cause by a power                                                                                 
## event. Allowed options are yes and no. Default is yes.

turn-ups-off = no     

# The period of polling UPS in seconds. 
# The allowed range is 1 ~ 60. Default is 3 sec.
ups-polling-rate = 3

# the period of re-try to find available UPS in seconds since find nothing at
# last time. The allowed range is 1 ~ 300. Default is 10 sec.
ups-retry-rate = 10

# Prohibiting daemon to provide communication mechanism for client, such as 
# pwrstat command. normally, it should be 'no'. It can be 'yes' if any security
# consideration. Allowed options are yes and no. Default is no.
prohibit-client-access = no

# The pwrstatd accepts four types of device node which includes the 'ttyS',
# 'ttyUSB', 'hiddev', and 'libusb' for communication with UPS. The pwrstatd
# defaults to enumerate all acceptable device nodes and pick up to use an
# available device node automatically. But this may cause a disturbance to the
# device node which is occupied by other software. Therefore, you can restrict
# this enumerate behave by using allowed-device-nodes option. You can assign
# the single device node path or multiple device node paths divided by a 
# semicolon at this option. All groups of 'ttyS', 'ttyUSB', 'hiddev', or
# 'libusb' device node are enumerated without a suffix number assignment.
# Note, the 'libusb' does not support suffix number only.
#
# For example: restrict to use ttyS1, ttyS2 and hiddev1 device nodes at /dev
# path only.
# allowed-device-nodes = /dev/ttyS1;/dev/ttyS2;/dev/hiddev1
#
# For example: restrict to use ttyS and ttyUSB two groups of device node at
# /dev,/dev/usb, and /dev/usb/hid paths(includes ttyS0 to ttySN and ttyUSB0 to
# ttyUSBN, N is number).
# allowed-device-nodes = ttyS;ttyUSB
#
# For example: restrict to use hiddev group of device node at /dev,/dev/usb,
# and /dev/usb/hid paths(includes hiddev0 to hiddevN, N is number).
# allowed-device-nodes = hiddev
#
# For example: restrict to use libusb device.
# allowed-device-nodes = libusb
allowed-device-nodes =

# Daemon will hibernate system to instead of system shutdown when power
# event occur. Allowed options are yes and no. Default is no.
hibernate = no