|May the source be with you, but remember the KISS principle ;-)|
|Contents||Bulletin||Scripting in shell and Perl||Network troubleshooting||History||Humor|
|News||Enterprise Unix System Administration||Recommended Links||Unix System Monitoring||Simple Unix Backup Tools||Unix Configuration Management Tools||Perl Admin Tools and Scripts||Baseliners|
|Missing backup||Rush/absence of testing of complex commands||Creative uses of rm||Working on the wrong computer||Executing command in a wrong directory||Reboot Blunders||Locking yourself out||Abuse of privileges|
|Blunders due differences between Unix flavors||Multiple sysadmin working on the same box||Ownership changing blunders||Premature or misguided optimization||Pure stupidity||LVM related mishaps||Dot-star-errors and regular expressions blunders||Side effects of patching of the customized server|
|Side effects of performing operations on home or application directories||Typos in the commands with disastrous consequences||Unintended consequences of automatic system maintenance scripts||Safe-rm||Tips||Horror stories History||Humor||Etc|
The sysadmins I've worked are hardened guys used to dealing with wannabes who forget that they are not the only users and that other users requests are equally important. But sometimes the danger lurk in completely different area and this is your colleagues. I am not talking about backstabbing which also happens, I am taking about catastrophic errors. Often the second admin is the person who is running an application on this server and who does not know Unix all that well. If you allow such a person to administer your server you better be willing to train him/her.
Sometimes after doing something stupid on the box people try to hide that complicating recovery. That works both way: if you do such thing it's better to come forward.
Beware side effects connected with the customarization of root account including adding aliases. Think twice before changing the way root account configured if you are not the only person working on the box. Using Subversion or other CMS is also highly recommended.
Here is one interesting example:
The file /etc/deluser.conf was configured to remove the home directory (it was done by previous sys admin and it was my first day at work) and mail spool of the user to be removed. I just wanted to remove the user account and I end up deleting everything (note -r was activated via deluser.conf):
Dr. Nikolai Bezroukov
I've recently graduated and have got a job at a fast-growing dedicated/VPS hosting company as a junior sysadmin.
I'd like to know any tips or advice you more senior sysadmins have, e.g. what mistakes did you make when you were younger, certification, how to stay organised.
My best piece of advice is to remember ignorance is not a sin. You don't know everything, nobody does. Read the documentation, ask for help. It is far better to spend some time and possibly a few shreds of credibility with your peers to find learn before you screw up, than to leap in and really mess something up. Everybody screws up sometime. Just don't be the one who screws up because they didn't RTFM or ask around first.
link|flag answered Jun 19 '09 at 20:27
Yup, assume you know nothing. Read, and read some more, then ask targeted questions. Try to document systems from the point of view of a novice. This will help you understand how everything is set up and provide something useful for the next junior sysadmin - when you stop being the new boy. Over the course of the next 6 months you're likely to learn more than you did in college. – Geoff Jun 19 '09 at 20:32
I love this advice. It will also help you avoid driving your technically-competent customers up the wall. I have no problem with support staff who don't know the answer to something and are willing to admit it and bring in a senior tech. It's the ones who insist that they do know, when they clearly don't, who need to find new jobs. – Ben Dunlap Jun 19 '09 at 20:41
I agree with Laura here. Not knowing anything is where all of us started, and if we were honest where we all still are. If you approach with humility, you will be just fine. – Matt Jun 19 '09 at 20:42
And "assume you know nothing" is excellent advice also. In fact that's probably the only assumption you should ever make about any technical problem. The road to solving just about every really knotty problem I've ever encountered has begun with me asking myself, "what am I assuming here?" – Ben Dunlap Jun 19 '09 at 20:43
@Matt "if we were honest where we all still are" -- I'm not totally on-board with that. Sure, relative to "knowing everything about everything" we all know nothing. But some people really are experts in certain areas and they know it and that's fine. I think humility, in this context, is ultimately about recognizing what you know and what you don't. – Ben Dunlap Jun 19 '09 at 20:46
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 in our efforts to advance understanding of environmental, political, human rights, economic, democracy, scientific, and social justice issues, etc. We believe this constitutes a 'fair use' of any such copyrighted material as provided for in section 107 of the US Copyright Law. In accordance with Title 17 U.S.C. Section 107, the material on this site is distributed without profit exclusivly for research and educational purposes. If you wish to use copyrighted material from this site for purposes of your own that go beyond 'fair use', you must obtain permission from the copyright owner.
ABUSE: IPs or network segments from which we detect a stream of probes might be blocked for no less then 90 days. Multiple types of probes increase this period.
Groupthink : Two Party System as Polyarchy : Corruption of Regulators : Bureaucracies : Understanding Micromanagers and Control Freaks : Toxic Managers : Harvard Mafia : Diplomatic Communication : Surviving a Bad Performance Review : Insufficient Retirement Funds as Immanent Problem of Neoliberal Regime : PseudoScience : Who Rules America : Neoliberalism : The Iron Law of Oligarchy : Libertarian Philosophy
War and Peace : Skeptical Finance : John Kenneth Galbraith :Talleyrand : Oscar Wilde : Otto Von Bismarck : Keynes : George Carlin : Skeptics : Propaganda : SE quotes : Language Design and Programming Quotes : Random IT-related quotes : Somerset Maugham : Marcus Aurelius : Kurt Vonnegut : Eric Hoffer : Winston Churchill : Napoleon Bonaparte : Ambrose Bierce : Bernard Shaw : Mark Twain Quotes
Vol 25, No.12 (December, 2013) Rational Fools vs. Efficient Crooks The efficient markets hypothesis : Political Skeptic Bulletin, 2013 : Unemployment Bulletin, 2010 : Vol 23, No.10 (October, 2011) An observation about corporate security departments : Slightly Skeptical Euromaydan Chronicles, June 2014 : Greenspan legacy bulletin, 2008 : Vol 25, No.10 (October, 2013) Cryptolocker Trojan (Win32/Crilock.A) : Vol 25, No.08 (August, 2013) Cloud providers as intelligence collection hubs : Financial Humor Bulletin, 2010 : Inequality Bulletin, 2009 : Financial Humor Bulletin, 2008 : Copyleft Problems Bulletin, 2004 : Financial Humor Bulletin, 2011 : Energy Bulletin, 2010 : Malware Protection Bulletin, 2010 : Vol 26, No.1 (January, 2013) Object-Oriented Cult : Political Skeptic Bulletin, 2011 : Vol 23, No.11 (November, 2011) Softpanorama classification of sysadmin horror stories : Vol 25, No.05 (May, 2013) Corporate bullshit as a communication method : Vol 25, No.06 (June, 2013) A Note on the Relationship of Brooks Law and Conway Law
Fifty glorious years (1950-2000): the triumph of the US computer engineering : Donald Knuth : TAoCP and its Influence of Computer Science : Richard Stallman : Linus Torvalds : Larry Wall : John K. Ousterhout : CTSS : Multix OS Unix History : Unix shell history : VI editor : History of pipes concept : Solaris : MS DOS : Programming Languages History : PL/1 : Simula 67 : C : History of GCC development : Scripting Languages : Perl history : OS History : Mail : DNS : SSH : CPU Instruction Sets : SPARC systems 1987-2006 : Norton Commander : Norton Utilities : Norton Ghost : Frontpage history : Malware Defense History : GNU Screen : OSS early history
The Peter Principle : Parkinson Law : 1984 : The Mythical Man-Month : How to Solve It by George Polya : The Art of Computer Programming : The Elements of Programming Style : The Unix Hater’s Handbook : The Jargon file : The True Believer : Programming Pearls : The Good Soldier Svejk : The Power Elite
Most popular humor pages:
Manifest of the Softpanorama IT Slacker Society : Ten Commandments of the IT Slackers Society : Computer Humor Collection : BSD Logo Story : The Cuckoo's Egg : IT Slang : C++ Humor : ARE YOU A BBS ADDICT? : The Perl Purity Test : Object oriented programmers of all nations : Financial Humor : Financial Humor Bulletin, 2008 : Financial Humor Bulletin, 2010 : The Most Comprehensive Collection of Editor-related Humor : Programming Language Humor : Goldman Sachs related humor : Greenspan humor : C Humor : Scripting Humor : Real Programmers Humor : Web Humor : GPL-related Humor : OFM Humor : Politically Incorrect Humor : IDS Humor : "Linux Sucks" Humor : Russian Musical Humor : Best Russian Programmer Humor : Microsoft plans to buy Catholic Church : Richard Stallman Related Humor : Admin Humor : Perl-related Humor : Linus Torvalds Related humor : PseudoScience Related Humor : Networking Humor : Shell Humor : Financial Humor Bulletin, 2011 : Financial Humor Bulletin, 2012 : Financial Humor Bulletin, 2013 : Java Humor : Software Engineering Humor : Sun Solaris Related Humor : Education Humor : IBM Humor : Assembler-related Humor : VIM Humor : Computer Viruses Humor : Bright tomorrow is rescheduled to a day after tomorrow : Classic Computer Humor
The Last but not Least
Copyright © 1996-2016 by Dr. Nikolai Bezroukov. www.softpanorama.org was created as a service to the UN Sustainable Development Networking Programme (SDNP) in the author free time. 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...
|You can use PayPal to make a contribution, supporting development of this site and speed up access. In case softpanorama.org is down you can use the at softpanorama.info|
The statements, views and opinions presented on this web page are those of the author (or referenced source) and are not endorsed by, nor do they necessarily reflect, the opinions of the author present and former employers, SDNP or any other organization the author may be associated with. We do not warrant the correctness of the information provided or its fitness for any purpose.
Last modified: September 12, 2017