Remote usage of the Dell console switches
On the normal NIKHEF network, the DS2161's (ruif and terp) are available at
/global/ices/grid/nikhef/network/Dell_Remote_Console_Switch_Software/
make a link to this directory from your home directory, named the same, and start the Java application like:
Dell_Remote_Console_Switch_Software/Dell_Remote_Console_Switch_Software &
and wait for the window to apprear. The naem of the login is Admin, (case sensitive) with the agreed password :-), or your own username with the assigned PW
on the farm
You need to have access to a host in the farm with X forwarding enabled. Using X compression will make the display respond quicker:
ssh -C -X <hostname>
Start the remote console tool via:
/share/doc/farms/Dell_Remote_Console_Switch_Software/Dell_Remote_Console_Switch_Software
Selection of the switches can be done via the tab Remote Console Switches, The following switches exist:
2161DS 03-53-33 the switch in the bulldozer cluster 2161DS 03-DD-F9 the switch in the server cabinet (named ruif)
On the tab Servers it is possible to connect to one of the attached hosts by double clicking the host name.
End a session by closing the containing window with the cross button in upper right corner.
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Using 'magic sysrq' keystrokes in the Dell DS2161 Console switch
Although impossible to do via the provided GUI, there is a magic way to get the "Alt-sysrq-<character>" keystrokes to work on this thing.
The trick is as follows: the keystroke macros that you can specify in the GUI are stored on disk in a set of SQL commands, but 'not' as specified, but in key-press-and-release codes. By manually changing this script, and moving the SysRQ-release instruction to a later position in the macro, you get the desired behaviour.
This is the magic line you should enter into the vpdbase.script file (change the initial number as needed):
INSERT INTO OPTIONS VALUES(44,'MACRO_Alt-PrtScrn+B','true,false,18,true,false,154,true,true,66,false,true,66,false,false,154,false,false,18,')
where
| true,false,18 | Alt-press |
| true,false,154 | PrintScrn-press |
| true,true,66 | "B" press |
| false,true,66 | "B" release |
| false,false,154 | PrintScrn-release |
| false,false,18 | Alt-release |
Normally, true,false,154 and false,false,154 would follow on eachother immediately, but by editing this file manually you can tear them apart.
Restart the Dell Remote colsole application and reboot your system (after doing sysctl -w kernel.sysrq=1)
Other keys: "S" = 83, "B" = 66, ...
