Skepticism and critical thinking is not panacea, but can help to understand the world better
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May the source be with you, but remember the KISS principle ;-) Skepticism and critical thinking is not panacea, but can help to understand the world better |
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Sep 29, 2019 | www.reddit.com
And soon you don't have to patch anymore. Work smarter, not harder
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Sep 29, 2019 | www.reddit.com
r/ShittySysadmin • Posted by u/[deleted] 2 months ago
The sooner you become a jaded, caffeine addicted, sarcastic, uncaring husk of person the easier your job will be.
Remember, once you learn IT there's no avoiding it. Don't forget, you're here forever! level
TheRealSchifty 9 points · 2 months ago
This is both the best and worst advice.
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Sep 29, 2019 | www.reddit.com
r/ShittySysadmin • Posted by u/[deleted] 2 months ago
[Advice] [Backups] Perform a full backup every time, rather than incremental. Especially for large amounts of data.
TB's of Data needing offsite backups? Perform a full backup every day of the data to make sure you can always restore it! Who cares if most of that data is junk/duplicated? It might be needed! Back it up! Ignore the thousands this will cost and time taken.
Bonus points for backing up to Tapes as well to store offsite in a damp, unlocked garage that a 'mate' owns.
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Sep 29, 2019 | www.reddit.com
r/ShittySysadmin • Posted by u/MiataCory 2 months ago
Disable your DNS server so that you can remind people they should've gotten you cake for SysAdmin Day!
packetloss99 2 points · 1 month ago
I wish I read this 14 days ago. Nobody bought cake here either
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Feb 26, 2019 | www.softpanorama.org
Adapted for HPC clusters by Nikolai Bezroukov on Feb 25, 2019
Status of this MemoThis memo provides information for the HPC community. This memo does not specify an standard of any kind, except in the sense that all standards must implicitly follow the fundamental truths. Distribution of this memo is unlimited.AbstractThis memo documents seven fundamental truths about computational clusters.AcknowledgementsThe truths described in this memo result from extensive study over an extended period of time by many people, some of whom did not intend to contribute to this work. The editor would like to thank the HPC community for helping to refine these truths.1. IntroductionThese truths apply to HPC clusters, and are not limited to TCP/IP, GPFS, scheduler, or any particular component of HPC cluster.2. The Fundamental Truths(1) Some things in life can never be fully appreciated nor understood unless experienced firsthand. Most problems in a large computational clusters can never be fully understood by someone who never run a cluster with more then 16, 32 or 64 nodes.(2) Every problem or upgrade on a large cluster always takes at least twice longer to solve than it seems like it should.
(3) One size never fits all, but complexity increases non-linearly with the size of the cluster. In some areas (storage, networking) the problem grows exponentially with the size of the cluster.(3a) Supercluster is an attempt to try to solve multiple separate problems via a single complex solution. But its size creates another set of problem which might outweigh the set of problem it intends to solve. .(4) On a large cluster issues are more interconnected with each other and a typical failure often affects larger number of nodes or components and take more effort to resolve(3b) With sufficient thrust, pigs fly just fine. However, this is not necessarily a good idea.
(3c) Large, Fast, Cheap: you can't have all three.
(4a) Superclusters proves that it is always possible to add another level of complexity into each cluster layer, especially at networking layer until only applications that use a single node run well.(5) Functioning of a large computational cluster is undistinguishable from magic.(4b) On a supercluster it is easier to move a networking problem around, than it is to solve it.
(4c)You never understand how bad and buggy is your favorite scheduler is until you deploy it on a supercluster.
(4d) If the solution that was put in place for the particular cluster does not work, it will always be proposed later for new cluster under a different name...
(5a) User superstition that "the more cores, the better" is incurable, but the user desire to run their mostly useless models on as many cores as possible can and should be resisted.(5b) If you do not know what to do with the problem on the supercluster you can always "wave a dead chicken" e.g. perform a ritual operation on crashed software or hardware that most probably will be futile but is nevertheless useful to satisfy "important others" and frustrated users that an appropriate degree of effort has been expended.
(5c) Downtime of the large computational clusters has some mysterious religious ritual quality in it in modest doze increases the respect of the users toward the HPC support team. But only to a certain limit.
(6) "The more cores the better" is a religious truth similar to the belief in Flat Earth during Middle Ages and any attempt to challenge it might lead to burning of the heretic at the stake.
(6a) The number of cores in the cluster has a religious quality and in the eyes of users and management has power almost equal to Divine Spirit. In the stage of acquisition of the hardware it outweighs all other considerations, driving towards the cluster with maximum possible number of cores within the allocated budget Attempt to resist buying for computational nodes faster CPUs with less cores are futile.
(6b) The best way to change your preferred hardware supplier is buy a large computational cluster.
(6c) Users will always routinely abuse the facility by specifying more cores than they actually need for their runs
(7) For all resources, whatever the is the size of your cluster, you always need more.
(7a) Overhead increases exponentially with the size of the cluster until all resources of the support team are consumed by the maintaining the cluster and none can be spend for helping the users.
(7b) Users will always try to run more applications and use more languages that the cluster team can meaningfully support.(7c) The most pressure on the support team is exerted by the users with less useful for the company and/or most questionable from the scientific standpoint applications.
(7d) The level of ignorance in computer architecture of 99% of users of large computational clusters can't be overestimated.
Security Considerations
This memo raises no security issues. However, security protocols used in the HPC cluster are subject to those truths.References
The references have been deleted in order to protect the guilty and avoid enriching the lawyers.
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"Unix is user friendly - it's just a bit more choosy about who it's friends are." -- Gene Buckle "... being a Linux user is sort of like living in a house inhabited by a large family of carpenters and architects. Every morning when you wake up, the house is a little different. Maybe there is a new turret, or some walls have moved. Or perhaps someone has temporarily removed the floor under your bed." -- Unix for Dummies, Jon "maddog" Hall
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Dogbert: I'm going back to my old job as a network systems administrator.
Dilbert: Why?
Dogbert: I'm attracted by the potential for reckless abuse of power.Scott Adams
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Next Big Thing
Sysadmins of the world, unite - you have nothing to lose, but your server log files
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Alt.Sysadmin.Recovery
Re: Hiring a programmer as a sysadminMy problem is, do I corrupt his soul and lead him down the path of eternal darkness through deceit and lies about the nature of our work because we could use the talent, or do I tell him to run screaming from this endless pit of despair and damnation?
Seagull
My group's mission statement - "You want *what* ? By *WHEN* ?"Simon Burr
Call me a nut. Call me a crazy dreamer. I would just like someone to write *ONE* OS that didn't insist on driving admins bugfuck on a regular basis.Mark Stapleton
USER, n.:The word computer professionals use when they mean "idiot."
Dave Barry, "Claw Your Way to the Top"
It used to be said [...] that AIX looks like one space alien discovered Unix, and described it to another different space alien who then implemented AIX. But their universal translators were broken and they'd had to gesture a lot.Paul Tomblin
A little rudeness and disrespect can elevate a meaningless interaction into a battle of wills and add drama to an otherwise dull day.Calvin discovers Usenet
I wonder why no company starts his manual with the words `We thank you for buying this piece of shit. We have done our best to make this junk as annoying as possible, and we assure that it will give you a headache for the next two months. However, if you feel satisfied with it, we will contact you for an expensive replacement.'Alex Priem
Managers are those lusers who can tell you what to do and you kinda[3] have to listen.[3] I mean "kinda" in the "not really, in fact, not at all" mode.
Chris Saunderson
Have you ever had a frantic call from a luser who screams "my root partition is 110% full, and this is all your fault?"
You WILL.
Bell Atlantic. If telecommunications were a prison, BA would be the 300-pound inmate who takes a certain..."liking" towards you.Isaac-Lew
Driscoll's Observation: The product of the IQs of each member of a tech-support conversation is a constant.Michael Driscoll
Vadim Vygonets writes: >> Alan Connell (alan.connell@ces-cdr.beer) wrote on 1590 September 1993 in > ^^^^ > Nice, but may I ask, why do you start counting since September 1993? September 1990 ended on the 30th. September 1991 ended on the 30th. September 1992 ended on the 30th. September 1993 didn't...Peter B. Juul
Er, what does SCSI have to do with old weapons?They both are better for maiming than killing?
Lars Balker Rasmussen, Art
-grrr- Well, it's arguable whether they've begun yet...What flags do you use with chmod to get flags like those?
The flags in question are outlined in O'Reilly's Essential Sysadmin For Rednecks, the one with the Blue Tick Hound on the cover. The command is as follows:
chmod -group +read +rite +run
Philip Kizer, Richard Letts, Richard Letts
Dennis Ritchie: "So fsck was originally called something else"
Question: "What was it called?"
Dennis Ritchie: Well, the second letter was different.Q&A at Usenix
Re: bad writingAnd where else in the world can you find dialogue like that... in the middle of desperate combat situations the commanders quote useless part numbers and factory models at each other!?
-- Lorens KockumSounds to me like a fault call to HP tech support.
-- Malcolm Ray
To sysadmin or not to sysadmin... that is the question, whether tis nobler in the minde to suffer the slings and arrowes of outragious fortune, or climb to the top of the building with a fucking high-power rifle and scope.Greg "Twotone" Spiegelberg
I've found that nurturing one's Zen nature is vital to dealing with technology. Violence is pretty damn useful too.Lionel Lauer
Irix is about as stable as a one-legged drunk with hypothermia in a four- hundred mile wind, balancing on a banana peel on a greased cookie sheet. When someone throws him an elephant with bad breath and a worse temper.Simon Cozens
All software sucks. Everybody is considered a jerk by somebody. The sun rises, the sun sets, the Sun crashes. It is the way of things.Steve Conley
#!/bin/sh cups=5 cd /home/kitchen mv /dev/coffeemaker/pot ./sink dd if=/dev/water/cold of=./sink/pot bs=$CUP count=$cups mv ./sink/pot /dev/coffeemaker cat /dev/coffeemaker/pot > /dev/coffeemaker/tank cat ./cupboards/dry_foods/coffee/filter > /dev/coffeemaker/filter_holder dd if=./cupboards/dry_foods/coffee/grinds of=/dev/coffeemaker/filter \ bs=$COFFEE_MEASURE count=$cups /opt/coffee/bin/close_filter_holder /opt/coffee/bin/brew start exit
Juhana Siren
The three "R"s of tech support:Retry
Reboot
Reinstall
-- Mark AtwoodYou forgot one: Repeat
-- Lars Balker Rasmussen
I have come to believe in the Buhddist concept of reincarnation. And I swear that whatever I did in a past life to deserve this I will *NEVER EVER* do again.
BroCaca
Some drink from the Fountain of Knowledge... Others just gargle.
-- Dave AronsonAnd some pee in it.
-- moc.oohay
All programs evolve until they can send email. -- Richard Letts
Contrary to popular belief, Unix is user friendly. It just happens to be very selective about who its friends are.
Kyle Hearn
Life is like sendmail: you're not sure you know how to handle it, but you know it'll end in tears. -- Malcolm RayLife is like sendmail: It's complicated and hard to understand, but it sure beats the alternative. -- Paul Tomblin
I admit that X is the second worst windowing system in the world, but all the others I've used are tied for first.
Paul Tomblin
Once, I imagined that Eric Allman would become so annoyed with sendmail security that sendmail V9 would include an AI engine whose goal would be to ensure sendmail security. As this version became widely installed, all those individual sendmails would start talking to each other and become a planet-sized sentient organism. After much brutal experience with 31334 d00dz, sendmail V9 would decide that humans are the root of all security problems, and eliminate the problem.This could probably be done as a pastiche of Harlan Ellison's "I Have No Mouth, and I Must Scream." Hmm. "I Have No MAIL FROM:, and I Must EHLO?"
Steve VanDevender
Mike Sphar"Sysadminning. Shit. Still in sysadminning. Everyone gets what they want. I asked for an alt.sysadmin.recovery, and for my sins they gave me one."Anthony DeBoer
I don't suffer from insanity; I enjoy every minute of it.Lieven Marchand
Failure is not an option. It comes bundled with the product.Ferenc Mantfeld
aitch as in Henryhlliary
tee as in Tom
tee as in Tom again
pee as in Peter
Colon as in WHERE YOUR HEAD IS!!!!
Move along, move along, nothing to see here, definitely no evil mind control software here, move along, move along...Thorf
ALL programs are poems, it's just that not all programmers are poets.
Jonathan Guthrie
We aim to please. Ourselves, mostly, but we do aim to please.
Anthony DeBoer
"This UI has been brought to you by the letters 'S' and 'K', and the runlevel 3."Greg Andrews
Picture a hamster in an exercise wheel. Running, running, running, running, and getting nowhere at all. That's sysadmin -- Greg Andrews
Then, picture another hanster in another such wheel. Standing, standing, standing, standing, and getting nowhere at all. That's luser. -- Vadik
Mike Sphar and Greg Andrews
Hey, you're right. I don't want to call a destructor on my objects, I want to call a *destroyer*. Gozer has come for your memory, little PersistentNode!Joel Gluth
"Coed Naked Tech Support: You're Never Alone When You're On The Phone."The motto at loyola.edu's helpdesk
But if it is a differential SCSI chain, you need two goats, one black and one white, and two ceremonies: kill the black goat at high noon and the white one at midnight. Same silver knife for both, of course.Graham ReedOtherwise, the chain will be unbalanced and things just get worse from there as all the drives do the "washing machine dance"....
Self-terminating devices merely need to be left with sufficient livestock and they'll take care of the rest.
Ah, young webmaster...Peter da Silva
java leads to shockwave.
Shockwave leads to realaudio.
And realaudio leads to suffering.
I'm still waiting for the marketing slogan:
Retry Reboot Reinstall Reformat Redhat
-- AlanAround here, we refer to that as "Service Pack 6.0"
-- Paul Tomblin"Fear leads to anger. Anger leads to hate. Hate leads to using sendmail."
Devin L. Ganger
Embrace your inner cynicism. Delight in the joy of knowing, with complete certainty, that the world is filled with idiots, losers, and all other assorted manner of higher life forms, and that a great many of of them trying their damndest to win the competition for "Species Least Likely To Be Useful". I figure, they'll probably lose that competition too, proving once again that the cockroach is mightier than the "man".Jeff Gostin
Eh? Linux is luserproof? What kind of "proper" set up is that, ripping out all removable media devices and ethernet, freezing the hard drive spindle, encasing it in concrete and dropping it off a pier?Greg Andrews
"A communications disruption can only mean one thing... Invasion."Lee Maguire, teaching us how to make people go away.
What's that word, it means you feel small and red, starts with an M? -- Peter da SilvaManagement. -- Simon Fraser
No, zombies are a marvel. -- Sten DrescherI thought they were Just Another Thing Wrong With NFS. -- Adam J. Thornton
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One doesn't deal with SAP. SAP deals with you. _Harshly_.There's this one project that I'm involved with at a "Lawks a Lordy, that's going to set my bottom on fire" level which will ultimately involve SAP somewhere.
I've got the twitching under control, but loud noises still have me diving for cover.
Chris "Saundo" Saunderson
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1. STOP DENYING. Listen to the wisdom of your body. Begin to freely admit the stresses and pressures which have manifested physically, mentally, or emotionally.
MSU VIEW: Work until the physical pain forces you into unconsciousness.
2. AVOID ISOLATION. Don't do everything alone! Develop or renew intimacies with friends and loved ones. Closeness not only brings new insights, but also is anathema to agitation and depression.
MSU VIEW: Shut your office door and lock it from the inside so no one will distract you. They're just trying to hurt your productivity.
3. CHANGE YOUR CIRCUMSTANCES. If your job, your relationship, a situation, or a person is dragging you under, try to alter your circumstance, or if necessary, leave.
MSU VIEW: If you feel something is dragging you down, suppress those thoughts. This is a weakness. Drink more coffee.
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Computing Center [n] In a University, that organization whose functions are
1) To impede wherever possible the development and usefulness of computing on the campus,
2) To gain the lion's share of funding, spend it largely on obsolete and otherwise inappropriate Solutions, and convince the campuse(s) wherever possible to expend their meager funds on the same, and
3) to oppose vigorously any new, useful and popular technology for ten years or more until nearly everyone on the campus(es) and elsewhere in the world is using it, then to adopt that technology and immediately attempt to gain complete and sole control of it [see MS-DOS, UNIX, ETHERNET, INTERNET].
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The heaviest element known to science was recently discovered by university physicists. The new element was tentatively named Administratium. It has no protons and no electrons, and thus has an atomic number of 0. However, it does have one neutron, 15 assistant neutrons, 70 vice-neutrons, and 161 assistant vice-neutrons. This gives it an atomic mass of 247. These 247 particles are held together by a force that involves constant exchange of a special class of particle called morons.
Since it does not have electrons, Administratium is inert. However, it can be detected chemically as it impedes every reaction with which it comes into contact. According to the discoverers, a minute amount of Administratium added to one reaction caused it to take over four days to complete. Without Administratium, the reaction took less than one second.
Administratium has a half-life of approximately three years, after which it does not normally decay but instead undergoes a complex nuclear process called "Reorganization". In this little-understood process, assistant neutrons, vice-neutrons, and assistant vice-neutrons appear to exchange places. Early results indicate that atomic mass actually increases after each "Reorganization".
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They should just quit the charade of calling it Customer Support. I suggest:
Welcome! to the Cointelpro Technologies Music-On-Hold Appreciation Center. If you are using a touch-tone phone, please follow these instructions for faster service.
- To hear Mantovani play "Greensleeves," press 1.
- To hear a Quiet Storm content-free-jazz arrangement of "Sledge Hammer," press 2.
- To hear "Eleanor Rigby" on electric piano, press 3.
- To hear 101 Strings play the theme from "Deliverance," press 4.
- To hear random infomercials about how our other products could enhance your productivity, you may press 5 at any time.
- If you are using a rotary-dial phone, please stay on the line, and a customer support engineer will hum "The Ballad of the Green Berets" for you in the order in which your call was received.
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8am: Your pager goes off and wakes you up. The message says it's the office, and it's a crisis. You roll out of bed moaning.
8:15am: You are now sufficiently awake to phone the office. Your pager has gone off three times already. You get through to the office and the receptionist is frantic. She says nobody in the entire office can print and they have a major proposal that has to be faxed out before 9am and if it isn't the company could lose a million dollars in new business. You try to get her to explain what's wrong, but she's incoherent.
8:30am: You're dressed in yesterday's dirty clothes (they were all you could find in time) and running out the door, sipping a Jolt cola and hailing a cab to the office.
Todd's Humor Archive Sysadmin Hints and Tips for Users
1. Do not ask your sysadmin "did you get my mail?". Your sysadmin receives more mail in an hour than you do in a week, and may well have already read and forgotten your mail. If he hasn't answered it could be that he has more important things to do, like restoring the passwd file on the main server.
2. Do not page the sysadmin at 1am to ask him simple shell programming questions. Your sysadmin has made the wonderful and enlightening set of UNIX man pages available to you to answer just that kind of question.
3. When in doubt, assume that it's your fault. It probably is.
4. If the networks' down and your sysadmin is laboring feverishly in the machine room, please do not pound on the machine room door to tell him that the network's down. He already knows.
5. Overly-general questions like "what's wrong with my computer?" or "what did you do the network?" do little except annoy the sysadmin and make him quiz you to find the actual symptoms that you are experiencing.
6. Accusing your sysadmin of favoritisim ("you won't fix my problem because you like the other engineers better") is infantile and ridiculous. Your sysadmin holds all users in equal disdain and is ignoring your problem because he has more important problems to deal with.
7. Do not, under any circumstances, walk into your sysadmin's cubicle and announce "I have no problem, I just wanted to tell you what a wonderful job you're doing" unless you want your sysadmin to drop dead from shock.
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Results of Time Efficiency Study of Interdepartmental Communications - Development Responses to Support Questions. Please evaluate and implement.
In order to reduce the backlog of the Support Department (SPT), increase productivity, and decrease the time the Development Department (DEV) spends answering SPT questions, DEV will use the following list of numbered reasons to speed up answers in n-dimensional humanoid interface sessions, to user questions SPT is unable to answer and must pass along to DEV:
1. Bug. 2. Feature. 3. Upgrade. 4. Tell them "Don't do that." 5. Ow! 6. Huh-huh, huh-huh. 7. Check Quotas. 8. Wish List. 9. Fixed in the next release. 10. In a future release. 11. How's that again? 12. Cool! 13. We'll get back to you on that. 14. That's in the land between bug and they're doing it wrong. 15. You never asked us _that_. 16. Yes. 17. Not our product. 18. Not our product's fault. 19. Flat negation. 20. Need more info. 21. Why do they want to do that? 22. Outside the product parameters. 23. They don't get the point. 24. They're unclear on the concept. 25. Who said they can do that? 26. They lied. 27. Reevaluate their medication. 28. Reevaluate optometry. 29. They are mutants. 30. (Expletive deleted).
Bureau of Redundancy Department
The Last but not Least Technology is dominated by two types of people: those who understand what they do not manage and those who manage what they do not understand ~Archibald Putt. Ph.D
Copyright © 1996-2018 by Dr. Nikolai Bezroukov. www.softpanorama.org was initially created as a service to the (now defunct) UN Sustainable Development Networking Programme (SDNP) in the author free time and without any remuneration. This document is an industrial compilation designed and created exclusively for educational use and is distributed under the Softpanorama Content License. Original materials copyright belong to respective owners. Quotes are made for educational purposes only in compliance with the fair use doctrine.
FAIR USE NOTICE This site contains copyrighted material the use of which has not always been specifically authorized by the copyright owner. We are making such material available to advance understanding of computer science, IT technology, economic, scientific, and social issues. We believe this constitutes a 'fair use' of any such copyrighted material as provided by section 107 of the US Copyright Law according to which such material can be distributed without profit exclusively for research and educational purposes.
This is a Spartan WHYFF (We Help You For Free) site written by people for whom English is not a native language. Grammar and spelling errors should be expected. The site contain some broken links as it develops like a living tree...
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Last updated: January 08, 2020
