Uninterruptable Power Supply:APC
Installation of Latest Version
Apcupsd can be used for power management and controlling most of APC's UPS models on Unix and Windows machines. Apcupsd works with most of APC's Smart-UPS models as well as most simple signalling models such a Back-UPS, and BackUPS-Office. During a power failure, apcupsd will inform the users about the power failure and that a shutdown may occur. If power is not restored, a system shutdown will follow when the battery is exhausted, a timeout (seconds) expires, or runtime expires based on internal APC calculations determined by power consumption rates. Apcupsd is licensed under the GPL version 2.
The latest version of apcupsd is 3.14.8-1 (January 2010) and is available from sourceforge in two rpms - one for the UPS daemon and one for the web based monitoring scripts. Neither of these install exactly in line with the SME way, and neither does the older version available on DAG.
These installation instructions make some additional modifications for SME. They have been tested on SME 7.5 and an APC SmartUPS 1500i with both a usb and a 940-0024C smart serial cable.
Download and install
Get the rpms from sourceforge
wget https://sourceforge.net/projects/apcupsd/files/rpms%20-%20Stable/3.14.8/apcupsd-3.14.8-1.el4.i386.rpm/download wget https://sourceforge.net/projects/apcupsd/files/rpms%20-%20Stable/3.14.8/apcupsd-multimon-3.14.8-1.el4.i386.rpm/download
Install with yum
yum localinstall apcupsd-3.14.8-1.el4.i386.rpm apcupsd-multimon-3.14.8-1.el4.i386.rpm
Configure apcupsd
Link the startup file and enable the service
ln -s /etc/init.d/e-smith-service /etc/rc.d/rc7.d/S38apcupsd config set apcupsd service status enabled
Copy the original conf file
cp /etc/apcupsd/apcupsd.conf /etc/apcupsd/apcupsd.conf.orig
Edit the /etc/apcupsd/apcupsd.conf file and make relevant changes for your UPS and requirements. The file is reasonably well documented and as a minimum you will probably want to set
UPSNAME UPSCABLE UPSTYPE DEVICE BATTERYLEVEL MINUTES TIMEOUT
You may also consider some additional security by only listening for connections on the localhost for monitoring and incoming events (assuming you have only one UPS directly connected). In this instance set
NISIP 127.0.0.1
Now make sure Nut isn't running and start the service
config setprop nut status disabled /etc/init.d/nut stop /etc/rc.d/rc7.d/S38apcupsd start
To check its running and view status information (you may need to wait 30 seconds to ensure initialisation and communications have completed)
/etc/init.d/apcupsd status
Usage of apcupsd
The file /etc/apcupsd/apcupsd.conf controls the configuration of the apcupsd daemon and is well documented. In addition to this /etc/apcupsd/apccontrol is called by the daemon whenever a UPS event occurs, and determines the standard action taken. User configurable actions can be taken by creating/editing files in /etc/apcupsd with names corresponding to relevant events, and these are called first by apccontrol. For example, a file called onbattery will be called by apccontrol whenever an ON BATTERY event occurs, and if onbattery returns an exit code of 99, then apccontrol will not take its own default action.
To view the UPS status of settings and monitored values you can use
/sbin/apcaccess
To configure the UPS EEPROM values you can use
/etc/init.d/apcupsd stop /sbin/apctest
Follow the command line menu to make selections and set UPS configuration vales. The menu varies depending upon if you are using usb or serial communications, but generally allows for querying the UPS status, running a battery calibration, programming the EEPROM values and communicating directly with the UPS in TTY mode.
Don't forget to restart the daemon when you are finished with apctest
/etc/init.d/apcupsd start
See the documentation for further details
Configure Multimon etc Scripts
The apcupsd-multimon rpm contains four cgi scripts that can be run via the webserver to monitor the UPS(s). The rpm does not install them correctly for SME however so the following modifications are needed.
mkdir -p /opt/apcupsd chown root:www /opt/apcupsd mv /var/www/cgi-bin/multimon.cgi /opt/apcupsd mv /var/www/cgi-bin/upsstats.cgi /opt/apcupsd mv /var/www/cgi-bin/upsfstats.cgi /opt/apcupsd mv /var/www/cgi-bin/upsimage.cgi /opt/apcupsd chown root:www /opt/apcupsd/* chmod 750 /opt/apcupsd/* mkdir -p /etc/e-smith/templates-custom/etc/httpd/conf/httpd.conf cd /etc/e-smith/templates-custom/etc/httpd/conf/httpd.conf
Now edit and create a new file 92apcupsdmon with the following content
{
$OUT = "";
my $allow = 'all';
my $pass = '0';
my $satisfy = 'all';
my $name = $apcupsd{'Name'} || 'APC UPS Daemon Monitoring';
for ('exit-if-none')
{
if ($apcupsd{'PublicAccess'})
{
if ($apcupsd{'PublicAccess'} eq 'none')
{
next;
}
elsif ($apcupsd{'PublicAccess'} eq 'local')
{
$allow = $localAccess;
$pass = 0;
$satisfy = 'all';
}
elsif ($apcupsd{'PublicAccess'} eq 'local-pw')
{
$allow = $localAccess;
$pass = 1;
$satisfy = 'all';
}
elsif ($apcupsd{'PublicAccess'} eq 'global')
{
$allow = 'all';
$pass = 0;
$satisfy = 'all';
}
elsif ($apcupsd{'PublicAccess'} eq 'global-pw')
{
$allow = 'all';
$pass = 1;
$satisfy = 'all';
}
elsif ($apcupsd{'PublicAccess'} eq 'global-pw-remote')
{
$allow = $localAccess;
$pass = 1;
$satisfy = 'any';
}
}
$OUT .= "#------------------------------------------------------------\n";
$OUT .= "# apcupsd multimon - $name\n";
$OUT .= "#------------------------------------------------------------\n";
{
if ((exists $apcupsd{'URL'}) && ($apcupsd{'URL'} ne ))
{ $OUT .= "Alias /$apcupsd{'URL'} /opt/apcupsd\n";
$OUT .= "ScriptAlias /$apcupsd{'URL'} /opt/apcupsd\n"; }
}
$OUT .= "Alias /apcupsd /opt/apcupsd\n";
$OUT .= "\n";
$OUT .= "<Directory /opt/apcupsd>\n";
$OUT .= " DirectoryIndex upsstats.cgi\n";
$OUT .= " Options +ExecCGI\n";
$OUT .= " order deny,allow\n";
$OUT .= " deny from all\n";
$OUT .= " allow from $allow\n";
if ($pass)
{
$OUT .= " AuthName $name\n";
$OUT .= " AuthType Basic\n";
$OUT .= " AuthExternal pwauth\n";
$OUT .= " require valid-user\n";
$OUT .= " Satisfy $satisfy\n";
}
$OUT .= "</Directory>\n";
}
}
Configure and expand the template
config setprop apcupsd PublicAccess local /sbin/e-smith/expand-template /etc/httpd/conf/httpd.conf
Restart the web server
sv t httpd-e-smith
Usage of Multimon etc Scripts
Now go to http://yourdomain.tld/apcupsd to see the statistics for the UPS at localhost, or https://yourdomain.tld/apcupsd/multimon.cgi for an overview of the UPS(s).
By editing /etc/apcupsd/hosts.conf and adding additional network UPS details, multimon.cgi can be used to monitor more than one UPS. By default only the localhost is monitored.
Uninstall
Use the following commands to stop apcupsd and remove/uninstall it
/etc/init.d/apcupsd stop config delete apcupsd rm /etc/e-smith/templates-custom/etc/httpd/conf/httpd.conf/92apcupsdmon expand-template /etc/httpd/conf/httpd.conf sv t httpd-e-smith rm -fr /opt/apcupsd rm /etc/rc.d/rc7.d/S38apcupsd yum remove apcupsd apcupsd-multimon rm -fr /etc/apcupsd
References
See the apcupsd main site.
See the apcupsd manual for further configuration and testing options.
See Uninterruptable_Power_Supply for standard SME use of Nut for UPS monitoring
See original forum post
Original Instructions (DAG)
The following instructions are based on the original forum post http://forums.contribs.org/index.php?topic=45923.0 and the use of an rpm from the DAG repository.
Setup the DAG repository
The following command will configure the Dag repository on SME Server. EDIT NOT COMPLETE!
To create an entry in the database for the epel repository we open put the following commands in a terminal
window or in a shell window:
/sbin/e-smith/db yum_repositories set epel repository \
Name 'SME Server - epel' \ BaseURL 'http://<http://download.fedoraproject.org/pub/epel/7/$basearch' \ EnableGroups yes \ GPGCheck yes \ Visible no \ status disabled
To enable the changes:
signal-event yum-modify
Just to be sure, give yum a fresh start:
yum clean all
After adding it to the database we have to update the changes to the configuration file:
signal-event yum-modify
Installation
Install apcupsd
yum install --enablerepo=dag --enablerepo=base apcupsd
Copy original conf file
cp apcupsd.conf apcupsd.conf.orig
Copy CGI files
cp /var/www/apcupsd/* /home/e-smith/files/ibays/Primary/cgi-bin/
Link the startup script
ln -s /etc/rc.d/init.d/e-smith-service /etc/rc.d/rc7.d/S99apcupsd
Set the Service in SME
config set apcupsd service status enabled
Configuration
Edit /etc/apcupsd/apcupsd.conf. The conf file has good detail on setup options.
Suggest setting the TIMEOUT to 600 seconds; You shouldn't let UPS batteries run down to 5% (default) as this massively shortens their life. Set TIMEOUT to 10 for testing.
Reboot or
/etc/init.d/apcupsd start
to start the service.
Usage
http://yourdomain.tld/cgi-bin/multimon.cgi gives a nice look at the UPS status, including a log of past events