Apcupsd is a powerful daemon that can be used to manage APC UPS, add epel repositories and run:
$ yum install apcupsd To configure apcupsd edit the following file:
cat /etc/apcupsd/apcupsd.conf"
---
## apcupsd.conf v1.1 ##
# # for apcupsd release 3.14.14 (31 May 2016) - redhat
#
# "apcupsd" POSIX config file
#
# Note that the apcupsd daemon must be restarted in order for changes to
# this configuration file to become active.
#
#
# ========= General configuration parameters ============
#
# UPSNAME xxx
# Use this to give your UPS a name in log files and such. This
# is particulary useful if you have multiple UPSes. This does not
# set the EEPROM. It should be 8 characters or less.
UPSNAME apcups
# UPSCABLE <cable>
# Defines the type of cable connecting the UPS to your computer.
#
# Possible generic choices for <cable> are:
# simple, smart, ether, usb
#
# Or a specific cable model number may be used:
# 940-0119A, 940-0127A, 940-0128A, 940-0020B,
# 940-0020C, 940-0023A, 940-0024B, 940-0024C,
# 940-1524C, 940-0024G, 940-0095A, 940-0095B,
# 940-0095C, 940-0625A, M-04-02-2000
#
UPSCABLE usb
# To get apcupsd to work, in addition to defining the cable
# above, you must also define a UPSTYPE, which corresponds to
# the type of UPS you have (see the Description for more details).
# You must also specify a DEVICE, sometimes referred to as a port.
# For USB UPSes, please leave the DEVICE directive blank. For
# other UPS types, you must specify an appropriate port or address.
#
# UPSTYPE DEVICE Description
# apcsmart /dev/tty** Newer serial character device, appropriate for # SmartUPS models using a serial cable (not USB).
#
# usb <BLANK> Most new UPSes are USB. A blank DEVICE
# setting enables autodetection, which is
# the best choice for most installations.
#
# net hostname:port Network link to a master apcupsd through apcupsd's # Network Information Server. This is used if the
# UPS powering your computer is connected to a # different computer for monitoring.
#
# snmp hostname:port:vendor:community
# SNMP network link to an SNMP-enabled UPS device.
# Hostname is the ip address or hostname of the UPS # on the network. Vendor can be can be "APC" or # "APC_NOTRAP". "APC_NOTRAP" will disable SNMP trap # catching; you usually want "APC". Port is usually # 161. Community is usually "private".
#
# netsnmp hostname:port:vendor:community
# OBSOLETE
# Same as SNMP above but requires use of the # net-snmp library. Unless you have a specific need
# for this old driver, you should use 'snmp' instead.
#
# dumb /dev/tty** Old serial character device for use with # simple-signaling UPSes.
#
# pcnet ipaddr:username:passphrase:port
# PowerChute Network Shutdown protocol which can be # used as an alternative to SNMP with the AP9617 # family of smart slot cards. ipaddr is the IP # address of the UPS management card. username and # passphrase are the credentials for which the card # has been configured. port is the port number on # which to listen for messages from the UPS, normally # 3052. If this parameter is empty or missing, the # default of 3052 will be used.
#
# modbus /dev/tty** Serial device for use with newest SmartUPS models
# supporting the MODBUS protocol.
# modbus <BLANK> Leave the DEVICE setting blank for MODBUS over USB
# or set to the serial number of the UPS to ensure # that apcupsd binds to that particular unit
# (helpful if you have more than one USB UPS).
#
UPSTYPE usb
DEVICE # POLLTIME <int>
# Interval (in seconds) at which apcupsd polls the UPS for status. This
# setting applies both to directly-attached UPSes (UPSTYPE apcsmart, usb, # dumb) and networked UPSes (UPSTYPE net, snmp). Lowering this setting
# will improve apcupsd's responsiveness to certain events at the cost of
# higher CPU utilization. The default of 60 is appropriate for most
# situations.
POLLTIME 60
# LOCKFILE <path to lockfile>
# Path for device lock file. This is the directory into which the lock file
# will be written. The directory must already exist; apcupsd will not create
# it. The actual name of the lock file is computed from DEVICE.
# Not used on Win32.
LOCKFILE /var/lock
# SCRIPTDIR <path to script directory>
# Directory in which apccontrol and event scripts are located.
SCRIPTDIR /etc/apcupsd
# PWRFAILDIR <path to powerfail directory>
# Directory in which to write the powerfail flag file. This file
# is created when apcupsd initiates a system shutdown and is
# checked in the OS halt scripts to determine if a killpower
# (turning off UPS output power) is required.
PWRFAILDIR /etc/apcupsd
# NOLOGINDIR <path to nologin directory>
# Directory in which to write the nologin file. The existence
# of this flag file tells the OS to disallow new logins.
NOLOGINDIR /etc
#
# ======== Configuration parameters used during power failures ==========
#
# The ONBATTERYDELAY is the time in seconds from when a power failure
# is detected until we react to it with an onbattery event.
#
# This means that, apccontrol will be called with the powerout argument
# immediately when a power failure is detected. However, the
# onbattery argument is passed to apccontrol only after the # ONBATTERYDELAY time. If you don't want to be annoyed by short
# powerfailures, make sure that apccontrol powerout does nothing
# i.e. comment out the wall.
ONBATTERYDELAY 6
# # Note: BATTERYLEVEL, MINUTES, and TIMEOUT work in conjunction, so
# the first that occurs will cause the initation of a shutdown.
#
# If during a power failure, the remaining battery percentage
# (as reported by the UPS) is below or equal to BATTERYLEVEL, # apcupsd will initiate a system shutdown.
BATTERYLEVEL 5
# If during a power failure, the remaining runtime in minutes # (as calculated internally by the UPS) is below or equal to MINUTES,
# apcupsd, will initiate a system shutdown.
MINUTES 10
# If during a power failure, the UPS has run on batteries for TIMEOUT
# many seconds or longer, apcupsd will initiate a system shutdown.
# A value of 0 disables this timer.
#
# Note, if you have a Smart UPS, you will most likely want to disable
# this timer by setting it to zero. That way, you UPS will continue
# on batteries until either the % charge remaing drops to or below BATTERYLEVEL,
# or the remaining battery runtime drops to or below MINUTES. Of course,
# if you are testing, setting this to 60 causes a quick system shutdown
# if you pull the power plug. # If you have an older dumb UPS, you will want to set this to less than
# the time you know you can run on batteries.
TIMEOUT 60
# Time in seconds between annoying users to signoff prior to
# system shutdown. 0 disables.
#ANNOY 300
ANNOY 0
# Initial delay after power failure before warning users to get
# off the system.
#ANNOYDELAY 60
ANNOYDELAY 1
# The condition which determines when users are prevented from
# logging in during a power failure.
# NOLOGON <string> [ disable | timeout | percent | minutes | always ]
NOLOGON disable
# If KILLDELAY is non-zero, apcupsd will continue running after a
# shutdown has been requested, and after the specified time in
# seconds attempt to kill the power. This is for use on systems
# where apcupsd cannot regain control after a shutdown.
# KILLDELAY <seconds> 0 disables
KILLDELAY 0
#
# ==== Configuration statements for Network Information Server ====
#
# NETSERVER [ on | off ] on enables, off disables the network
# information server. If netstatus is on, a network information
# server process will be started for serving the STATUS and
# EVENT data over the network (used by CGI programs).
NETSERVER on
# NISIP <dotted notation ip address>
# IP address on which NIS server will listen for incoming connections.
# This is useful if your server is multi-homed (has more than one
# network interface and IP address). Default value is 0.0.0.0 which
# means any incoming request will be serviced. Alternatively, you can
# configure this setting to any specific IP address of your server and # NIS will listen for connections only on that interface. Use the
# loopback address (127.0.0.1) to accept connections only from the
# local machine.
NISIP 127.0.0.1
# NISPORT <port> default is 3551 as registered with the IANA
# port to use for sending STATUS and EVENTS data over the network.
# It is not used unless NETSERVER is on. If you change this port,
# you will need to change the corresponding value in the cgi directory
# and rebuild the cgi programs.
NISPORT 3551
# If you want the last few EVENTS to be available over the network
# by the network information server, you must define an EVENTSFILE.
EVENTSFILE /var/log/apcupsd.events
# EVENTSFILEMAX <kilobytes>
# By default, the size of the EVENTSFILE will be not be allowed to exceed
# 10 kilobytes. When the file grows beyond this limit, older EVENTS will
# be removed from the beginning of the file (first in first out). The
# parameter EVENTSFILEMAX can be set to a different kilobyte value, or set
# to zero to allow the EVENTSFILE to grow without limit.
EVENTSFILEMAX 10
#
# ========== Configuration statements used if sharing =============
# a UPS with more than one machine
#
# Remaining items are for ShareUPS (APC expansion card) ONLY
#
# UPSCLASS [ standalone | shareslave | sharemaster ]
# Normally standalone unless you share an UPS using an APC ShareUPS
# card.
UPSCLASS standalone
# UPSMODE [ disable | share ]
# Normally disable unless you share an UPS using an APC ShareUPS card.
UPSMODE disable
#
# ===== Configuration statements to control apcupsd system logging ========
#
# Time interval in seconds between writing the STATUS file; 0 disables
STATTIME 0
# Location of STATUS file (written to only if STATTIME is non-zero)
STATFILE /var/log/apcupsd.status
# LOGSTATS [ on | off ] on enables, off disables
# Note! This generates a lot of output, so if # you turn this on, be sure that the
# file defined in syslog.conf for LOG_NOTICE is a named pipe.
# You probably do not want this on.
LOGSTATS off
# Time interval in seconds between writing the DATA records to
# the log file. 0 disables.
DATATIME 0
# FACILITY defines the logging facility (class) for logging to syslog. # If not specified, it defaults to "daemon". This is useful # if you want to separate the data logged by apcupsd from other
# programs.
#FACILITY DAEMON
#
# ========== Configuration statements used in updating the UPS EPROM =========
#
#
# These statements are used only by apctest when choosing "Set EEPROM with conf
# file values" from the EEPROM menu. THESE STATEMENTS HAVE NO EFFECT ON APCUPSD.
#
# UPS name, max 8 characters #UPSNAME UPS_IDEN
# Battery date - 8 characters
#BATTDATE mm/dd/yy
# Sensitivity to line voltage quality (H cause faster transfer to batteries) # SENSITIVITY H M L (default = H)
#SENSITIVITY H
# UPS delay after power return (seconds)
# WAKEUP 000 060 180 300 (default = 0)
#WAKEUP 60
# UPS Grace period after request to power off (seconds)
# SLEEP 020 180 300 600 (default = 20)
#SLEEP 180
# Low line voltage causing transfer to batteries
# The permitted values depend on your model as defined by last letter # of FIRMWARE or APCMODEL. Some representative values are:
# D 106 103 100 097
# M 177 172 168 182
# A 092 090 088 086
# I 208 204 200 196 (default = 0 => not valid)
#LOTRANSFER 208
# High line voltage causing transfer to batteries
# The permitted values depend on your model as defined by last letter # of FIRMWARE or APCMODEL. Some representative values are:
# D 127 130 133 136
# M 229 234 239 224
# A 108 110 112 114
# I 253 257 261 265 (default = 0 => not valid)
#HITRANSFER 253
# Battery charge needed to restore power
# RETURNCHARGE 00 15 50 90 (default = 15)
#RETURNCHARGE 15
# Alarm delay # 0 = zero delay after pwr fail, T = power fail + 30 sec, L = low battery, N = never
# BEEPSTATE 0 T L N (default = 0)
#BEEPSTATE T
# Low battery warning delay in minutes
# LOWBATT 02 05 07 10 (default = 02)
#LOWBATT 2
# UPS Output voltage when running on batteries
# The permitted values depend on your model as defined by last letter # of FIRMWARE or APCMODEL. Some representative values are:
# D 115
# M 208
# A 100
# I 230 240 220 225 (default = 0 => not valid)
#OUTPUTVOLTS 230
# Self test interval in hours 336=2 weeks, 168=1 week, ON=at power on
# SELFTEST 336 168 ON OFF (default = 336)
#SELFTEST 336 The configuration I use is pretty simple, basically shutdown the server if the power is down for more than one minute.
ANNOY flag is also disabled (set to 0) because I do not need it on headless servers.