Information on the PSU control software
The source of the PSU control software can be found in
$ZROOT/psuctrl/SRC. It consists of:
1) psuctrl
Program to manually check and change the status of the PSU control units.
Installed in $ZROOT/psuctrl.
2) psuctrld
Program to regularly monitor the status of the control units and to notify
any changes via syslog. Installed in $ZROOT/psuctrl.
3) psuctrld.sh
Script to start-up psuctrld. A copy of this script is located in
$TARCH/apemaster/etc/init.d. A local copy is installed by cfengine into
/etc/init.d (plus a corresponding link for automatic start-up at boot time).
Configuration
Information about which PSU controller is connected to which apemaster and
which device is stored in the configuration file $ZROOT/psuctrl/rack.conf.
Switching on/off
Racks can be switched on/off using either the program 'psuctrl' or the
button on the PSU control units. Before switching on, make sure that all
manual switches have been put into state on. The PSU controllers will
make sure that the crates are switched on in the right order.
$ZROOT/psuctrl/psuctrl
Usage: $ZROOT/psuctrl/psuctrl <rack> <cmd>
<rack> ..... r0, r1, ...
<cmd> ...... on, off, test
Command will do nothing if the requested PSU controller is not connected.
$ZROOT/psuctrl/psuctrld
Runs as a daemon and checks the status of all PSU controllers connected to
the apemaster in regular intervals (currently: 120 sec). Any changes of the
status are written to syslog.
/etc/init.d/psuctrld
Usage: /etc/init.d/psuctrld {start|stop|status|try-restart|restart|probe}
Use this script to start/stop the psuctrld.
Known bugs/problems/features
When switching-off the PSU control unit while the psuctrld is running, it may
happen that reading the feedback from the PSU control unit does not work.
Work-around: restart psuctrld
Further reading
http://www-zeuthen.desy.de/ape/html/APEmille/Documentation/Hardware/psuctrl
# $Id: HOWTO-psuctrl,v 1.1 2005/02/03 13:11:58 pleiter Exp $
