We Are Experiencing Technical Difficulties 146
So without a doubt, the best time for the power supply in your
server to die is when you're out of town. Oh, and the line to your
boxes at home should die too. And the only machine with a working
modem in your hotel room should be an NT box (without ssh installed) and then the connection you dial through should be 19 hops away from anything (routing from San Jose to NY, DC, Boston, and back to Frisco and conveniently losing almost all of the packets) Anyway, we're back
up and kinda hobbling now, (thanks to Jesse & Dan and UP Networks for being jonny's-on-the-spot) but I'm trying to fix some stuff
as fast as I can. In the meantime, things are gonna be a bit zany,
so don't flame me to loud. And don't worry, we've been working for
the last month to build a new system with redundancy and stuff so that
this won't happen again (knock on wood).
Um ... no. You get what you pay for. (Score:1)
Re:Hmm, maybe you should switch from Linux (Score:1)
stupid redundant power supply tricks (Score:1)
(also good if you have redundant ethernet)
Time for investment? (Score:1)
I can highly recommend the Compaq Proliant 7000...hot-swap redundant PSU's hotswap RAID in hardware, hotswap PCI slots, integrated hardware monitoring and alerting . . . and a groovy LCD panel on the front...
You never realise the value of hot-swap mirrored drives until you're demoing a front office trading system to the powers-that-be in the company taking yours over (the 'lets try and keep our jobs' demo)
I think I aged 5 years in 10 minutes...
Because... (Score:1)
Only 'cos I have real-world experience of this kit saving my arse one or twice, and saving our company several millions of dollars...
If you want to send some other eval kit that works as well, I'll sing its praises too...
Regarding hot-swap, it's the hardwares job to hide it from the OS. Example - I can walk up to our production Proliant 7K, pull one PSU and 7 drives from it, and not one of the users will notice the difference (although Data Centre security might give me a hard time). Hot-swapping a PCI network card is a litte more work, as you have to use a provided utility to down the power to the slot before you yank the card. And all this under NT too...
The only thing the OS needs to know about in the hot-swap world is the CPU's. I don't know of anything that will support CPU hot-swap...yet.
Linux is fine, but... (Score:1)
Sun hardware (with the exception of the 5/10, heh) is built very solid. They offer redundant power supplies, RAID built-in among other nice features.
It's not Linux so much but really the choice of hardware. You get what you pay for.
It's also dependant on your design. If you need 24/7 service then you design two or more of everything into the mix.
I'm setting up a nice site with two E250's with redundant power supplies, RAIDs and Resonate. I don't want to be called at 3am... :)
Is this really news? (Score:1)
Failover? (Score:1)
Actually... (Score:1)
Of course if the particular century in question began with 1901/01/01, he'd be wrong or if he's talking about the "20th" century he'd be wrong, or if he's talking about the century that began today, well he'd be wrong again. This would of course be the first Friday 13th of *that* century, which means that it can also be the first of *this* century.
Extrapolation from century to millennium is left as an exercise for the reader.
Record Comment Count (Score:1)
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Re:VNC for those times without SSH...OTP. (Score:1)
Re:Failover? (Score:1)
Hm... At Linux World and you've got an NT box... (Score:1)
Shameful...
Re:Whatever you did - Keep it this way !! (Score:1)
---
"'Is not a quine' is not a quine" is a quine.
the years between 1 AD and 1 BC? (Score:1)
Don't know about you, but I personally call 'em non-existent.
Re:what's so vital about 100% uptime? (Score:1)
Gee, I'll bet that's what e-Bay said too.
Frisco? (Score:1)
"That's the great thing about kill-bots, you can always make more."
Remotely configuring eth0- can be done! (Score:1)
----------------------
"This moon-cheese will make me very rich! Very rich indeed!
friday the 13th, heh (Score:1)
SSH for win32 (Score:1)
http://www.sorted.org/~chris/ssh/
Flamebait? (Score:1)
It's really a pity that something that just had to have been intended as humor was marked down as flamebait.
Blargh.
While you're working on it.. (Score:1)
The pictures are still messed up... (Score:1)
Re:Hmm, maybe you should switch from Linux (Score:1)
Re:Hmm, maybe you should switch from Linux (Score:1)
13 (Score:1)
Re:In related news... (Score:1)
SSH from Win32 (Score:1)
Re:SSH from Win32 (Score:1)
I must disagree also . . . (Score:1)
A nice non-tech fellow from accounting was interested in checking out our premise equipment---just out of curiosity. Toward the end of the tour, he tripped on a slim fiber bundle behind a relay rack after answering his cell phone. In his other hand was a tall 20+ ounce styrofoam cup filled with tea. Of course, it's contents hit the rear of a Dell PowerEdge 6300 (running Oracle and all of great importance) alarming two units in the triple-redundant power supply. The server ran on the third. The other two were destroyed but later replaced hot. Slide in the new and press a button.
No kidding!
Re:ack (Score:1)
Re:friday the 13th, heh (Score:1)
>(notice I didn't say 'millenium', is there one
>next year anytime?)
You should be aware that the next century begins
On Jan. 1, 2001, for exactly the same reason
that the next millenium begins on the same day.
ohh.... (Score:1)
Re:Hey.. (Score:1)
Bowie J. Poag
Hehehe.. blackouts abound.. (Score:1)
Hehehe.. dont worry, we still love you, Rob.
Bowie
PROPAGANDA [system12.com]
Bowie J. Poag
what's so vital about 100% uptime? (Score:1)
Friday 13/th has sucked here too (Score:1)
/mnt/dskPic 100% full;
/mnt/dskEverything 100% full;
badly written code trashes database files;
users hysterical;
need beer;
exec rm -rf;
return "need_more_space" }
Re:For those times without SSH...OTP. (Score:1)
Take a cue from Micorsoft, Rob! (Score:1)
redundancy (Score:1)
I know it might be too late to cry over spilled milk, but way back when, vendors started offering a very nifty thing called a "redundant power supply" or "n+1 power"... This would have prevented all these problem.
Sun Tzu must have been running Linux...
- Hold out baits to entice the enemy. Feign disorder, and crush him. (Sun Tzu, The art of war)
Triskadekaphobia (Score:1)
Re:Whatever you did - Keep it this way !! (Score:1)
*sigh* (Score:1)
He said that today was the last Friday the 13th of this century. Since Friday, October 13, 2000 is a Friday the 13th in this century but is not today, that makes him wrong.
---
Put Hemos through English 101!
"An armed society is a polite society" -- Robert Heinlein
Wrong. (Score:1)
However, today IS the last Friday the 13th in "the 1900's".
---
Put Hemos through English 101!
"An armed society is a polite society" -- Robert Heinlein
Or just pack around a floppy with PuTTY (Score:1)
Oh, and it's illegal to use in the US without an RSA license. Damn patent laws.
Re:ahem. (Score:1)
It annoys me, but I never correct anyone.
Re:19 hops, San Jose->NY->DC->Boston->Frisco?? (Score:1)
BTW, traceroute to Slashdot from @Home:
Tracing route to slashdot.org [206.170.14.75]
over a maximum of 30 hops:
1 27 ms 30 ms 3 ms ottawa-fe.net.rogers.wave.ca [24.112.33.1]
2 16 ms 35 ms 24 ms 10.0.184.53
3 41 ms 22 ms 30 ms 24.2.9.9
4 15 ms 26 ms 27 ms c1-pos9-1.bflony1.home.net [24.7.72.245]
5 17 ms 29 ms 33 ms c1-pos1-0.clevoh1.home.net [24.7.65.5]
6 28 ms 30 ms 30 ms c1-pos5-3.cmdnnj1.home.net [24.7.67.158]
7 33 ms 29 ms 30 ms c1-pos1-0.washdc1.home.net [24.7.65.85]
8 35 ms 32 ms 56 ms bb1-pos2-1-0.mae-e.nap.home.net [24.7.72.54]
9 72 ms 72 ms 43 ms mae-east.ibm.net [192.41.177.110]
10 59 ms 66 ms 52 ms beth1sr2-11-0-0.md.us.ibm.net [198.133.27.10]
11 68 ms 71 ms 60 ms bethjbr1-ge-1-0-0-0.md.us.ibm.net [165.87.29.122
]
12 106 ms 95 ms 93 ms sfra1br1-at-2-0-0-2.ca.us.ibm.net [165.87.230.98
]
13 121 ms 89 ms 91 ms sfra1sr3-so-0-0-0-0.ca.us.ibm.net [165.87.13.30]
14 101 ms 112 ms 93 ms 165.87.161.73
15 97 ms 122 ms * ded1-fa11-1-0.snfc21.pbi.net [209.232.130.4]
16 113 ms 95 ms 92 ms 209.232.138.214
17 111 ms 92 ms 92 ms slashdot.org [206.170.14.75]
Personally, I'd say the reason for LOTS of hops is because Slashdot uses PacBell's backbone, which seems to ONLY talk to the world via IBM, etc...
Re:SSH for win32 (Score:1)
Does it beat teraterm + ttssh?
(Not as though I use that these days. I'm almost totally linuxed now, just the occasional box out there that it helps to have slightly secure access from, eg at home...)
~Tim
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Re:friday the 13th, heh (Score:1)
Odd fact: 010100b = 20d, and 010101b = 21d. Which reflects the ages of certain people I know. kewl.
Well, what about...... (Score:1)
J:)
Re:friday the 13th, heh (Score:1)
BTW, this is the last total eclipse of either.
Tim
Re:SSH for win32 (Score:1)
Date- (Score:1)
Anyone else notice this?
-Larry
Hey.. (Score:1)
hehehe
-Larry
Re:No Excuse (Score:1)
Okay, so you don't like what he said. Fine. Agree to disagree and be done with it. Flames make me sick.
Re:While you're working on it.. (Score:1)
Re:I must disagree also . . . (Score:1)
--bdj
Re:Power Supplies (Score:1)
--bdj
Also, never remotely configure your eth0 (Score:1)
Oh well, the machine is only twenty miles away, and I have to now take a trip. It was a good try though:)
Lesson: Don't remotely configure the ethernet card that you are connected to!
It worked once before, honest!
Friday 13/th has gotten me as well... (Score:1)
But hey, getting back to topic here, tis ok. Stuff happens.. hee hee hee. and always at the most convenient time(s).
Si on a une arbre et un ordinateur, s'il bruit? (Score:1)
So, what do we call the years between 1 AD and 1 BC?
More like 8000 now (Score:1)
Not that I've got any shares yet
A new poll? And what would we ask? (Score:1)
How about the question noone wants to ask? Like: Who do you blame for the Red Hat IPO disaster?
A. Red Hat
B. E*Trade/E*Offering
C. SEC
D. All of the above
E. Y2K
F. Will in Seattle
G. The penguins in the cage
I vote for B. But I'm not sure about those penguins
Oops, forgot one other answer. (Score:1)
Re:The pictures are still messed up... (Score:1)
Which is why big sites should run on W2K (Score:1)
C'mon, they guarantee 95% uptime.
Isn't that enough?
;-)
Power Supplies (Score:1)
Is it just the heat that limits their lifespan? Or are power supplies used in most Intels just crappy??
I once (1 time only) bought a US made PowerCool 300 watt P/S for $150. It's lasted quite a long time but I'm not sure that justifies the hefty price.
I'm curious. What are other folks' experiences?
Has anyone found a good reliable P/S for AT/ATX's??
Is there some secret to it??
(JTOL)
Re: (Score:1)
Re:For those times without SSH...OTP. (Score:1)
Don't forget, OPIE has its problems too. Most notably, it is still vulnerable to connection hijacking, so frequent use of OPIE in a particularly hostile environment is generally a bad idea. Intelligently handling su in an environment with lots of root users is nontrivial at best. (Remember, any passwords sent over an OPIE connection can still be sniffed.)
I'm not saying OPIE is bad, or that it shouldn't be used. I'm just saying it needs to be used cautiously.
--
Fourth law of programming: Anything that can go wrong wi
I'm just glad... (Score:1)
I *was* going to "Ask Slashdot" if nerds were superstitious. Hmmm...
Hang in there guys, we've all been there, with the Great Unwashed standing at the server room door, saying; "Do you have an estimated time?" "Did you know that accounting's down, too?" "What's the problem?" "Should we call someone?" "Can I get my email?" "Should I call my customers?" "Do the phone lines work?"
Mph!
Re:Redundant power supplies are terrible! (Score:1)
Although your use of double entendre is technically correct, it is, in most cases, used for more risque puns.
Again, sorry.
Whore of Babylon (Score:1)
You've got a lot of explaining to do, young man.
huh? (Score:1)
What a crazy little borg you are!
The Divine Creatrix in a Mortal Shell that stays Crunchy in Milk
Re:Time for investment? (Score:1)
I would have to say go with Alpha, or UltraSPARC. Although a Quad-Xeon machine ain't bad, a dual-processor Ultra would probably be a whole lot better for this job. Some Ultras are hot swappable, but the problem with hot swap is whether or not the OS can handle it.
Strange Doings (Score:1)
Re:No Excuse (Score:1)
It figures an anonymous bastard like yourself would post such trash.
Redundant power supplies are terrible! (Score:1)
You need Hardware Health Monitoring! :') (Score:1)
http://www.lm-sensors.nu [lm-sensors.nu]
You might have received an email warning that the voltages were beginning to go wacky. I found a dying power-supply and replaced it before services when down with this software. It can tell you when a CPU fan is slowing or stopped, or if things are getting too hot, too. Nifty!
Year 2000 / New Millienium (Score:1)
I don't care if the millenium "officially" starts Jan 2001 or not. When it comes not partying this New Years Eve, I'm going to be thinking of other things besides calendar math.
TheGeek
http://www.geekrights.org [geekrights.org]
no more headlines mailed, either (Score:1)
Re:Is this really news? (Score:1)
Or CW.net (nt) (Score:1)
Re:ack (Score:1)
james
Re:Hmm, maybe you should switch from Linux (Score:1)
Re:No Excuse (Score:1)
Friday 13th (Score:1)
Today is the LAST Friday the 13th of this century. Think about it. I think supernatural forces are against Rob!
About this redundancy problem, anyone got any information? Like a book? We need to do that here.
19 hops, San Jose->NY->DC->Boston->Frisco?? (Score:1)
Re:No Excuse (Score:1)
Besides, when they start to charge membership fees you can start complaining, until then it is annoying but not much you can do.
Re:Wrong. (Score:1)
Also, he could have said "the millenium".
ack (Score:2)
It pains me to see that Slashdot is back up and running thanks in part to NT.
Re:ahem. (Score:2)
--
Interested in XFMail? New XFMail home page [slappy.org]
Re:Date- (Score:2)
Sapphire & Steel have been assigned!
Re:No Excuse (Score:2)
Chill. I'm guessing /. is still "in trasition" to Andover, so multi-redundant backup and high-availabilty is still in the works. Si?
In related news... (Score:2)
Re:Redundant power supplies are terrible! (Score:2)
So he gives it to her.
-Chris
Re:friday the 13th, heh (Score:2)
Re:friday the 13th, heh (Score:2)
Microsoft in danger of being ripped apart by the Government on anti-trust.
A Linux distrubutor goes public and its stock increases like 600% the first week.
The last total solar eclipse of the centry (notice I didn't say 'millenium', is there one next year anytime?)
Forecast in hell next week: colder with possible flurries...
Re:friday the 13th, heh. DANGER: offtopic drift! (Score:2)
Re:No Excuse (Score:2)
Let us do some math in reference to banner ads and "hobby sites"...
Let's make a few assumptions (alright, ALOT of assumptions.) Say your hobby site is fairly popular getting 100k hits per day with an average transfer of 8k per hit. <math> 100000 * 8 / (60 * 60 * 24) == 9.26K/s</math> That's assuming the traffic is perfectly evenly distributed -- which we all know isn't true.
To continuously transmit 9.26K/s would require a 128k connection. A standard analog modem tops out in the 3K/s range. A single ISDN B channel tops out at 7.5K/s. A dual channel ISDN (2B) or 128k frame connection tops out at 15.2K/s. Let's assume you go with ISDN (it's generally the lower cost.)
SO, you'd need an ISDN router (the first person to say "ISDN Modem" gets shot) at a cost of 700$US, an ISDN phone line at a cost of 100$US/month and 200$US installation, and an ISP at a cost of 150$US/month plus 200$US installation (what a rip-off.) That's 1100$US to start plus 250$US per month for your "hobby"... and you haven't even bought a machine to be your web server.
Seeing as no one is being charged for access to
As always, Your Milage MUST Vary!
For those times without SSH...OTP. (Score:3)
hosts.allow has a rule for in.telnetd allowing local network standard access.
in hosts.deny:
in.telnetd: ALL : twist
-L
Hope this helps!
-- Greg