Grex Helpers Conference

Item 75: Announcements About Grex

Entered by valerie on Wed Sep 23 21:25:38 1998:

32 new of 175 responses total.


#144 of 175 by gregb on Thu Dec 17 13:50:36 1998:

Congrats to janc, steve and remmers!


#145 of 175 by steve on Thu Dec 17 16:24:02 1998:

   Rebooted Grex today, to make effective yet another change to
perhaps make Grex a little better at dealing with fork bombs.


#146 of 175 by steve on Fri Dec 18 05:35:25 1998:

   For the third time in Grex's history we've "rewound" uid's
in the passwd file.

   Since the highest number uid (user id) we can have is 65,536
we've had to recycle uids when we've gotten near the end of the
uid limit. This morning just a few minutes past mightnight, the
uid count got to 65,501 so I changed newuser to start using uid
10,000 as we have in the past, but with a new "group" id, which
is 53.

   Back in the olden days (ha!) all accounts were in group 50,
called people.  Then came group 51, "foks" and then group 52
called "beings".  Today we're at group 53 which is called
"humans".

   Here's a history of the groups:

Group        Date Started
50 (people)  06-jun-91
51 (folks)   24-nov-96
52 (beings)  10-mar-98
53 (humans)  18-dec-98

   We've had about 162,000 accounts created on Grex now.  Gosh,
I think its time for me to do another strange statistics item
about Grex's accounts...


#147 of 175 by rcurl on Fri Dec 18 17:23:31 1998:

Pretty quiet right now:
Login      Name               TTY  Idle  Login Time   Location   Work Phone
gal      Terri Lynn            qb        Dec 18 11:59 Ypsilanti  q
keesan   C. Keesan            *p1        Dec 18 11:57
rcurl    Rane Curl            *r4        Dec 18 12:21


#148 of 175 by keesan on Fri Dec 18 17:35:43 1998:

Hi Rane, is the telnet connection down again?  Jim says hi, too.


#149 of 175 by steve on Fri Dec 18 19:30:11 1998:

   Grex's net connection has been acting strangely since about 5am this
morning.  Technically, our ISDN connection is just fine, but a router
"upwind" of Grex (or something like that) has been intermittant.


#150 of 175 by keesan on Fri Dec 18 20:03:41 1998:

Long delays in emailing short files.


#151 of 175 by jep on Fri Dec 18 20:20:12 1998:

I've gotten some weird delays using Backtalk, also.


#152 of 175 by remmers on Fri Dec 18 21:50:50 1998:

Seems to be okay at the moment.


#153 of 175 by gregb on Sat Dec 19 03:48:49 1998:

I was on this morning when it went deep-six.  Right in the middle of 
composing a msg. too.  I tried for a couple hours after that, but no 
dice.  Glad to see it back up.


#154 of 175 by steve on Sat Dec 19 05:02:53 1998:

   We've been stable for many hours now.  With luck we won't have that
for a nice long while.


#155 of 175 by other on Sat Dec 19 05:14:02 1998:

greg, look in your home directory for a file called dead.letter which will
have the text you put into the message when your login disconnected.


#156 of 175 by rcurl on Sat Dec 19 05:16:14 1998:

Now, Merit is not authenticating. Doesn't seem to affect the load here.


#157 of 175 by aruba on Sat Dec 19 05:24:36 1998:

Everyone please come check out the auction!  We're up to 32 new items.


#158 of 175 by gregb on Sat Dec 19 22:12:04 1998:

Re. 155: Thanx, other.


#159 of 175 by steve on Sun Dec 20 23:06:56 1998:

   We now have possesion of one of the Sun-4/690 computers that
have been donated to us.  It's... beautiful, and *heavy*.  We have
the "card cage" which can hold up to 16 cards, and the CPU card.
Missing, but coming to us are the CPU modules themselves.  All the
system needs is memory and 220V power to run.


#160 of 175 by senna on Sun Dec 20 23:38:28 1998:

Do we have any tasks earmarked for this thing?  


#161 of 175 by steve on Mon Dec 21 00:58:35 1998:

  Well, its most of what we need to create a second CPU.  Before we
got this system, if Grex's motherboard died, we'd be dead 'till we
went out and bought a 'new' 670 motherboard.  Now, we have a new 
motherboard such that we have a backup.  We have backups for just
about everything else, and not having that for the motherboard was
troublesome.  We'd been looking for "cheap" motherboards, and we
were in the process of negociating for a $400 - $500 one when we
got offers for *two* such systems or parts.

  Once we get the second present (which includes 128M of SIMMs)
from California (cards, cpu modles, memory) we'll be able to 
build up a system and test it.  That should hopefully give us two
working motherboards, one set of CPU's and a batch of memory.
We'll test them out on the old Sun-4/260 chassis, and then we'll
know that we have a backup for Grex which will let me sleep better
at night (I actually had a dream about not having backup hardware).
We also have a second set of CPU modules on the way, we think,
such that if we get more memory we could have two Sun-4/670's
with a backup unit.


#162 of 175 by wgm on Mon Dec 21 02:02:21 1998:

Is there likely to be a problem with wiring in a 220V circuit from the circuit
box? Any idea what amperage the service is and how much the current equipment
draws?


#163 of 175 by steve on Mon Dec 21 02:40:42 1998:

   There are several options on the 220V power supply.  I've used step-up
transformers before with success.  The other would be to get a 220 line
brought into the pumpkin, and the third is to not worry about getting 220
installed, as we have other chassis in which to run another Sun-4/670.

   We still have a couple of the Sun-3 chassis, one of which was the
Sun-4/260 we used for several years.  Chassis we got lots of. ;-)

   The other possibility is to get a 110V power supply.  One of the
neat things about this hardware we just got is the fact that things
are modular.  The power supply looks like a square-ish suitcase, and
plugs into the main box.  I *think* there is a 110V version that was
made for smaller installaions but I'm not sure about that.

   The power supply needs a maximum of 1200w or about 5A at 220V.


#164 of 175 by senna on Mon Dec 21 08:46:18 1998:

(This coming from a man who knows jack about computers) any feasible way 
to run the processors simultaneously and speed grex up?  Or, possibly, 
split grex into two pieces with conferences and party on one machine and 
everything else on the other?

Like I said, I know nothing.  So I might as well ask.


#165 of 175 by n8nxf on Mon Dec 21 11:21:04 1998:

I think the old Sun-3 chassis I took apart a long ago time had a
transformer in the base that could be wired for either 110V or 220V. 


#166 of 175 by remmers on Mon Dec 21 12:09:28 1998:

Re resp:164 - Yes, the plan is to distribute Grex functions over several
machines eventually. Running mail on a separate machine is the highest
priority, I think.


#167 of 175 by steve on Mon Dec 21 12:59:09 1998:

   Yup.  Once we have some of the technical infrastructure in place
it will be possible to start spreading things over multiple machines.
Mail processing will be the first, and will likely have the biggest
impact of any single thing we could do.


#168 of 175 by mark1 on Mon Dec 21 14:30:40 1998:

I have a question...  How do you put a message on the login board advisory
thing-a-ma-jig?
do you have to be a member to do it???
MJK


#169 of 175 by scott on Mon Dec 21 14:35:26 1998:

You have to be staff, or one of a few people that have been given permission.

With thousands of users, we can't allow just anyone to update the motd
(Message Of The Day) file.

Re:  The Sun 670 donations:
The really *cool* thing is that we are getting multiple spares for less than
we budgeted to buy a single set of spares.  We may also be getting some nice
disks, so that Grex will have a much lower hardware budget for the next year
or two.


#170 of 175 by mta on Mon Dec 21 16:35:12 1998:

On the other hand, mark, if you have something important to put there it's
fine to ask a member of the staff if they'd put it there for you.  They may
not agree since we try to keep the MOTD short -- but if it's genuinely of
interest to all Grexers they probably will. ;)


#171 of 175 by keesan on Mon Dec 21 17:38:08 1998:

1200 watts is a space heater.  Does the computer run at that all the time?


#172 of 175 by steve on Mon Dec 21 19:53:13 1998:

   1200watts is what its rated at being able to deliver.  It would consume
less than that for just one card in the box.  My guess is 500w but we'd have
to check to make sure.


#173 of 175 by drew on Tue Dec 22 01:21:56 1998:

Again, supplying yourselves with 220 volts is a simple task, given two
adjacent empty circuit breaker slots in the fuse box. (Would someone check
the box to see if there are?)  You could very well end up wanting it sooner
or later anyway. So you might as well run a 220 volt line for this upgrade.


#174 of 175 by steve on Tue Dec 22 02:19:19 1998:

   (we should move this discussion to the Garage, I think)


#175 of 175 by keesan on Tue Dec 22 23:14:19 1998:

We are heating our house under constructin with a 1200 watt space heater and
it has maintained 46 degrees, with 10 degrees out.  With single glazing.  It
could get pretty hot in the pumpkin.  Jim suggesting moving grex to the house
and I would not have to pay for any heat.


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