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Uninterruptable Power Supply (view source)

Revision as of 00:06, 3 March 2015

10,361 bytes added ,  00:06, 3 March 2015
Added lastest instruction for sme9 with e-smith-nutUPS-2.4.0-9.el6.sme.noarch and Nut-cgi.
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====Connecting multiple UPS's====
 
====Connecting multiple UPS's====
 
To be added http://bugs.contribs.org/show_bug.cgi?id=629
 
To be added http://bugs.contribs.org/show_bug.cgi?id=629
 +
 +
= SME8 =
    
===UPS Variables and Commands===
 
===UPS Variables and Commands===
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}}
 
}}
   −
====Setting UPS Variables====
+
==Setting UPS Variables==
 
In order to set UPS variables it is necessary to have enabled a user with administrative privileges as above first.
 
In order to set UPS variables it is necessary to have enabled a user with administrative privileges as above first.
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Issuing commands could shutdown your server unexpectedly!}}
 
Issuing commands could shutdown your server unexpectedly!}}
   −
===Scheduling Events===
+
= SME 9 =
 +
 
 +
{{Warning box|Be sure to have e-smith-nutUPS-2.4.0-9.el6.sme.noarch or higher to carry on with these instructions. If you get a lower version, just follow SME8 instruction.}}
 +
 
 +
rpm -qa e-smith-nutUPS
 +
 
 +
If you get NUT running with administrative privileges modification from sme8 instruction, you need to remove the custom template created for this. These variables are taken in charge by the new package.
 +
 
 +
First you need to delete the custom template file.( This command delete the directory, be sure you don't have personal file present. If the case, delete manualy the file created for administrative privileges )
 +
 +
rm -rf /etc/e-smith/templates-custom/etc/ups/upsd.users
 +
 
 +
Now, to get '''upsd''' to recognise the modification of user, we need to expand the template and reload the '''upsd''' configuration
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 +
/sbin/e-smith/expand-template /etc/ups/upsd.users
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/usr/sbin/upsd -c reload
 +
 
 +
===UPS Variables and Commands===
 +
In some cases you may wish to modify variables on the actual UPS such as the Low Charge/LOWBATTERY setting. This requires the use of the '''upsrw''' command and UPS administrative privileges.
 +
 
 +
You may also want to control the UPS directly from the command line by issuing UPS commands. This requires use of the '''upscmd''' command and UPS administrative privileges.
 +
{{Warning box|In general, the UPS data should be left protected and changes to it or issuing of commands well thought out. If you wish to make data changes or issue commands then the administrative privileges can be enabled as below and should then be disabled.}}
 +
 
 +
====UPS Administrative Privileges====
 +
 
 +
You should check your new password ( AdminPass ) to run '''upserw''' & '''upscmd'''. Of course, you could change your password for a easier one to use.
 +
 
 +
config show nut
 +
 
 +
To set new admin password in database. The new password would be admin ( change it to suit your need )
 +
 
 +
config setprop nut AdminPass admin
 +
 
 +
To enabled administrative privileges and run command to ups.
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 +
config setprop nut AdminUser enabled
 +
 
 +
Now, to get '''upsd''' to recognise admin modification for administrative privileges we expand the template and reload the '''upsd''' configuration
 +
 
 +
/sbin/e-smith/expand-template /etc/ups/upsd.users
 +
/usr/sbin/upsd -c reload
 +
 
 +
{{Note box|To disabled the administrative privileges once you have changed the UPS parameters or issued commands as required, issue the commands
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config setprop nut AdminUser disabled
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/sbin/e-smith/expand-template /etc/ups/upsd.users
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/usr/sbin/upsd -c reload
 +
}}
 +
 
 +
==== UPS access ====
 +
 
 +
The access of the ups is controled by database properties. The default propertie is set to localhost and give permission to run '''upsrw''' & '''upscmd''' from localhost only if administrative privileges is set to enabled as above. No slave ups could be connected in this mode. Three choices is available to set access.
 +
 
 +
 
 +
* localhost: the ups access is only from the local machine ( UPS master ).
 +
 
 +
* private: the ups access is from your local machine and local network as per define in server-manager panel.
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* public: the ups access is similar to localhost.
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 +
 
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To set access properties in the database ( example: localhost )
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 +
config setprop nut access localhost 
 +
/sbin/e-smith/expand-template /etc/ups/upsd.conf
 +
  /usr/sbin/upsd -c reload
 +
 
 +
In localhost or public mode ( no remote access ), access to your ups is ( UPS name is '''UPS''' )
 +
UPS@localhost
 +
 
 +
In private mode,  access to your ups is ( UPS name is '''UPS''' )
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UPS@localhost or UPS@192.168.1.1 ( ups master IP )
 +
slave ups get access with UPS@192.168.1.1 ( ups master IP )
 +
==Setting UPS Variables==
 +
In order to set UPS variables it is necessary to have enabled the administrative privileges as above first and you get the possibility to run command from slave ups if access is set to private as above.
 +
 
 +
In the examples below, it is assumed your UPS name is '''UPS''', that it is local, that the administrative user is '''admin''' and password '''admin'''. You can verify your UPS name via:
 +
upsc -l
 +
 
 +
To view a complete list of the UPS variables, both informational and modifiable
 +
upsc UPS
 +
 
 +
To determine the modifiable variables for your UPS, their current settings and their available setting values execute the command:
 +
upsrw UPS
 +
 
 +
You can now modify the variables you wish using a command similar to the following (Note the order of the arguments is important, and you may need quotes around the value being set, "20"):
 +
upsrw -s battery.charge.low=20 -u admin -p admin UPS
 +
 
 +
For remote host (slave UPS ), we need to add the IP from master UPS to run command.
 +
upsrw -s battery.charge.low=20 -u admin -p admin UPS@192.168.2.1
 +
 
 +
Where the value after '''-s''' should be one of the parameters identified by the '''upsrw ups''' command. You can of course verify your changes using   
 +
upsrw UPS
 +
or
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upsc UPS
 +
 
 +
After you are done, clean up by disabling the '''upsc''' administrative privileges:
 +
{{Warning box|Make sure you understand the meaning or the UPS variables and their available setting options. Verify that your changes meet your intended behaviour!}}
 +
 
 +
More information on upsrw can be found at:
 +
 
 +
- Manual page: man upsrw
 +
 
 +
====Issuing UPS Commands====
 +
In order to issue UPS commands it is necessary to have enabled the administrative privileges as above first and you get the possibility to run command from slave ups if access is set to private as above.
 +
 
 +
In the examples below, it is assumed your UPS name is '''UPS''', that it is local, that the administrative user is '''admin''' and password '''admin'''. You can verify your UPS name via:
 +
upsc -l
 +
 
 +
To view a complete list of available commands for your UPS:
 +
upscmd -l UPS
 +
 
 +
You can now issue a command to the localhost UPS with similar to the following:
 +
upscmd -u admin -p admin UPS test.battery.start
 +
 
 +
For remote host (slave UPS ), we need to add the IP from master UPS to run command.
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upscmd -u admin -p admin UPS@192.168.2.1 test.battery.start
 +
 
 +
Where the command '''test.battery.start''' is a valid command for your UPS as previously determined by '''upscmd -l UPS'''. Depending upon the command issued you may get broadcast messages and emails relating to and confirming what the UPS is doing.
 +
 
 +
After you are done, clean up by disabling the '''upsc''' administrative privileges:
 +
{{Warning box|Before issuing any commands verify what they do for your particular UPS via the relevant documentation and ensure that the command meets your intended behavioural requirement!
 +
 
 +
Issuing commands could shutdown your server unexpectedly!}}
 +
 
 +
<headertabs/>
 +
 
 +
=Scheduling Events=
 
====Shutdown Time Delay Example====
 
====Shutdown Time Delay Example====
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  signal-event reboot
 
  signal-event reboot
   −
===Aditional Information===
+
=Configure Nut-cgi Monitor Scripts=
 +
 
 +
The nut-cgi rpm contains scripts that can be run via the webserver to monitor the UPS(s).
 +
 
 +
===Dowload and install===
 +
 
 +
You have to enable the '''[[epel]]''' repositories.
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yum install --enablerepo=epel nut-cgi
 +
 
 +
Edit file /etc/ups/hosts.conf and add.
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 +
MONITOR UPS@localhost "local UPS"
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The nut-cgi rpm contains three cgi scripts. The rpm does not install them correctly for SME however so the following modifications are needed.
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mkdir -p /opt/nut-cgi-bin
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chown root:www /opt/nut-cgi-bin
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mv /var/www/nut-cgi-bin/upsstats.cgi /opt/nut-cgi-bin
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mv /var/www/nut-cgi-bin/upsset.cgi /opt/nut-cgi-bin
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mv /var/www/nut-cgi-bin/upsimage.cgi /opt/nut-cgi-bin
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chown root:www /opt/nut-cgi-bin/*
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chmod 750 /opt/nut-cgi-bin/*
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mkdir -p /etc/e-smith/templates-custom/etc/httpd/conf/httpd.conf
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cd /etc/e-smith/templates-custom/etc/httpd/conf/httpd.conf
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 +
Now edit and create a new file 92nutupscmon with the following content
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 +
{
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    $OUT = "";
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    my $allow = 'all';
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    my $pass = '0';
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    my $satisfy = 'all';
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    my $name = $nut{'Name'} || 'NUT UPS Daemon Monitoring';
 +
 +
    for ('exit-if-none')
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    {
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      if ($nut{'PublicAccess'})
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      {
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          if ($nut{'PublicAccess'} eq 'none')
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          {
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            next;
 +
          }
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          elsif ($nut{'PublicAccess'} eq 'local')
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          {
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            $allow  = $localAccess;
 +
            $pass    = 0;
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            $satisfy = 'all';
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          }
 +
          elsif ($nut{'PublicAccess'} eq 'local-pw')
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          {
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            $allow  = $localAccess;
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            $pass    = 1;
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            $satisfy = 'all';
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          }
 +
          elsif ($nut{'PublicAccess'} eq 'global')
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          {
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            $allow  = 'all';
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            $pass    = 0;
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            $satisfy = 'all';
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          }
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          elsif ($nut{'PublicAccess'} eq 'global-pw')
 +
          {
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            $allow  = 'all';
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            $pass    = 1;
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            $satisfy = 'all';
 +
          }
 +
          elsif ($nut{'PublicAccess'} eq 'global-pw-remote')
 +
          {
 +
            $allow  = $localAccess;
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            $pass    = 1;
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            $satisfy = 'any';
 +
          }
 +
      }
 +
 +
      $OUT .= "#------------------------------------------------------------\n";
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      $OUT .= "# nut multimon - $name\n";
 +
      $OUT .= "#------------------------------------------------------------\n";
 +
 +
      {
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        if ((exists $nut{'URL'}) && ($nut{'URL'} ne <nowiki>''</nowiki>)) {
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          $OUT .= "Alias  /$nut{'URL'}  /opt/nut-cgi-bin\n";
 +
        } 
 +
      }
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      $OUT .= "Alias  /nut  /opt/nut-cgi-bin\n";
 +
 +
      $OUT .= "\n";
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      $OUT .= "<Directory /opt/nut-cgi-bin>\n";
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      $OUT .= "    DirectoryIndex upsstats.cgi\n";
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      $OUT .= "    Options +ExecCGI\n";
 +
      $OUT .= "    order deny,allow\n";
 +
      $OUT .= "    deny from all\n";
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      $OUT .= "    allow from $allow\n";
 +
      if ($pass)
 +
      {
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          $OUT .= "    AuthName $name\n";
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          $OUT .= "    AuthType Basic\n";
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          $OUT .= "    AuthExternal pwauth\n";
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          $OUT .= "    require valid-user\n";
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          $OUT .= "    Satisfy $satisfy\n";
 +
      }
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      $OUT .= "</Directory>\n";
 +
    }
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}
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Configure databases and expand the template
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config setprop nut PublicAccess local
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/sbin/e-smith/expand-template /etc/httpd/conf/httpd.conf
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{{Note box|The above sets access to the scripts to ''local'' ip addresses only. See the [[Web_Application_RPM#New_DB_settings]] for further info and settings}}
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Restart the web server
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sv t httpd-e-smith
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===Usage of Nut-cgi Scripts===
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Now go to http://yourdomain.tld/nut to see the statistics and information for the UPS at localhost.
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 +
By editing /etc/ups/hosts.conf and adding additional network UPS details, nut-cgi can be used to monitor more than one UPS. By the modification above, only the localhost is monitored.
 +
 
 +
=Aditional Information=
    
There are template fragments in /etc/e-smith/templates/etc/ups that control the config files located in /etc/ups. The default settings should be OK for most situations.
 
There are template fragments in /etc/e-smith/templates/etc/ups that control the config files located in /etc/ups. The default settings should be OK for most situations.
Phil101
66

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