On 2013-05-07 08:41, Corey Quinn wrote:
Tom Limoncelli posted a fascinating blog post today, at
http://everythingsysadmin.com/2013/05/what-happens-when-you-type-tel.html
It reminds me in some ways of
https://plus.google.com/112218872649456413744/posts/dfydM2Cnepe (same
question, a stupendously in-depth exploration of everything that goes into
something commonplace).
That in turn, leads to a fun topic that hasn't been asked lately in the
circles I travel: What's your favorite sysadmin interview question?
You're on a terminal, no access to the internet, how do you find some esoteric
option of the command "ls". A lot of young generation sysadmin who have
installed Ubuntu a couple of times are shocked when you tell them the manual
is local on the machine.
/tmp is full, you know what file if taking all the space, it's ok lose the
data, but we cannot terminate the process that is filling it up. What do you
do? - helps to find book vs work knowledge from somebody pretending to be a
senior UNIX sysadmin. Another one like this is find out their understanding of
forward vs. reverse DNS, their understanding that in a non-AD environment, a
reverse record has to be set, and if not it breaks some apps.
I have a different approach to the telnet question:
Two servers are talking using http. The first one (the client) is failing to
contact the second one (the server). No graphical access to either of them,
only ssh access. How do you debug? I expect ping, telnet, tcpdump, look at the
log on the server, etc... Great to find out trouble shooting skills + network
understanding.
Finally I ask about change, and change management, what official processes
they've used in other companies, but also what personal discipline they stick
to (no big change on Fridays, making backup copies of files before changing
them etc...).
--
Yves. http://www.SollerS.ca/
Unix/Linux and Python specialist in Calgary.
http://blog.zioup.org/
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