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Difference between revisions of "Cobalt RAQ2 MIPS Cluster"

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[[Image:Cluster.jpg|right|thumb|300px|Rear of the cluster, 4/21/2006]]
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{{Retired|2010}}
 
==Overview==
 
==Overview==
There are 22 Cobalt RAQ2 servers administered by [[alpha]], a Pentium III.  They are named for letters of the Greek alphabet.  They run from beta to psi.  They interface to alpha through a Cisco router.  They boot Debian off nfs on [[alpha]].
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There are 22 Cobalt RAQ2 servers.  They are named for letters of the Greek alphabet.  They run from beta to psi.
  
 
==Function==
 
==Function==
They are currently being used only for display purposes.   
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They are currently being used only for display purposes.  [[User:Jess Unger|Jess Unger]] and [[User:Matt Green|Matt Green]] wrote scripts to display time (accurate to ten seconds) and weather on the LCD displays.  RSS feeds are pending. [[User:Christopher Reffett|Chris Reffett]] wrote the two scripts currently running on the Cobalts: one which cycles through the statuses of workstations and certain VMs and servers, and one which displays the overall status of the SysLab, in terms of "SysCon."
  
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==Usage==
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When the Cobalts are rebooted you MUST kill the process paneld on each machine before text can be written to the screens. Currently there is a script (/root/python/killer.sh) that will kill paneld on all the Cobalts. Then you can use the other scripts to add a message of your choice. The command to put something on the screen of a Cobalt (when logged in to the respective machine) is $ putlcd [line 1] [line 2]
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If a Cobalt will not boot try net booting it. To net boot a Cobalt, press the left and right buttons on the D-Pad simultaneously when it turns on. It should then say "Net booting"
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Tau is currently down at the moment and will not net boot.Please avoid shutting down any Cobalts until the problem is resolved since it might happen to another one if it is shut down.
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There's an informal guideline in place to only access the Cobalts' displays from Alpha.
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===Rules===
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Only messages relating to the various scripts, welcome messages for visitors, holiday messages, and hostnames may be displayed on the screens. All other messages are not allowed.
  
 
== Specifications==
 
== Specifications==
 
* Processor: MIPS@250Mhz
 
* Processor: MIPS@250Mhz
 
* Memory: 143MB
 
* Memory: 143MB
* Hard Drive: None
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* Hard Drive: 4GB IDE
 
* Interface: Ethernet interface & serial
 
* Interface: Ethernet interface & serial
  
==Usage and Notes==
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==Notes==
 
* Their IP addresses range from 198.38.20.52-73.
 
* Their IP addresses range from 198.38.20.52-73.
 
* Each has a 16x2 LCD display
 
* Each has a 16x2 LCD display
 
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[[Category:Obsolete Page]]
==External Links==
 
* [http://www.sun.com/hardware/serverappliances/pdfs/discontinued/manual.raq2.pdf Cobalt RAQ2 User Manual]
 
 
 
[[Category:Located in the Machine Room]]
 

Latest revision as of 15:43, 26 February 2016

Rear of the cluster, 4/21/2006

Overview

There are 22 Cobalt RAQ2 servers. They are named for letters of the Greek alphabet. They run from beta to psi.

Function

They are currently being used only for display purposes. Jess Unger and Matt Green wrote scripts to display time (accurate to ten seconds) and weather on the LCD displays. RSS feeds are pending. Chris Reffett wrote the two scripts currently running on the Cobalts: one which cycles through the statuses of workstations and certain VMs and servers, and one which displays the overall status of the SysLab, in terms of "SysCon."

Usage

When the Cobalts are rebooted you MUST kill the process paneld on each machine before text can be written to the screens. Currently there is a script (/root/python/killer.sh) that will kill paneld on all the Cobalts. Then you can use the other scripts to add a message of your choice. The command to put something on the screen of a Cobalt (when logged in to the respective machine) is $ putlcd [line 1] [line 2]

If a Cobalt will not boot try net booting it. To net boot a Cobalt, press the left and right buttons on the D-Pad simultaneously when it turns on. It should then say "Net booting"

Tau is currently down at the moment and will not net boot.Please avoid shutting down any Cobalts until the problem is resolved since it might happen to another one if it is shut down.

There's an informal guideline in place to only access the Cobalts' displays from Alpha.

Rules

Only messages relating to the various scripts, welcome messages for visitors, holiday messages, and hostnames may be displayed on the screens. All other messages are not allowed.

Specifications

  • Processor: MIPS@250Mhz
  • Memory: 143MB
  • Hard Drive: 4GB IDE
  • Interface: Ethernet interface & serial

Notes

  • Their IP addresses range from 198.38.20.52-73.
  • Each has a 16x2 LCD display