Are you serious? Do people actually configure linux servers with configuration files
outside of /etc ? Beyond LDAP and MySQL what else keeps the configuration outside
of /etc ?
I'm not talking about replacing all the data from a web server or loading the data into
an LDAP or MySQL server. I'm talking reconfiguration.
As far as "recreating problems from the original server" did you not read what I wrote?
I said ...
[QUOTE]
A complete backup of /etc and /var from a machine that was running as intended 2
hours before the SHTF.
[/QUOTE]
Notice the *as intended*. If the machine was not running properly to begin with, that
would have to dealt with before the machine goes down. If your misconfigured
machine fails before you get it configured correctly, you have bigger problems my
friend!
On Thursday, May 16, 2013 11:41:23 PM JD Austin wrote:
What kind of servers do you manage where knowing what is in /etc and /var is
sufficient?
Ho
w
are you sure you aren't recreating problems from the original server on the new one?
On Thu, May 16, 2013 at 11:36 PM, Nathan England <
nathan@nmecs.com[1]> wrote:
From my experiences with server rebuilds after catastrophic failures, I absolutely have
to agree. The server *is* the documentation. I have rebuilt servers using extensive
documentation about how it was setup, with scripts and plans included in the
documentation and why it was set up the way it was set up. I have also rebuild servers
after massive failures using only data backups.
If I had to rebuild a server today, in a time crunch, and I had the choice of complete
documentation of how and why vs a copy of the /etc folder.... I'd go /etc in a heart
beat. I wouldn't even flinch.
Who is to say I am going to understand someone else's logic when reading their
documentation. Who's to say the system wasn't built by a genius and then
documented by a teenage kid still wet behind the ears having only built his first 'puter
a week ago.
vs
A complete backup of /etc and /var from a machine that was running as intended 2
hours before the SHTF.
I agree completely that this kind of attitude comes across as arrogance. But is it really
arrogance if I really am just better than you? (lol - ducks)
When you build a machine for a client it is highly recommended that you well
document the system. But at the end of the day, if the admin who must fix what is
broken can't figure it out from looking at the code or reading the configuration files
what makes you think endless reems of documentation is going to help?
I know a few guys who could figure it out, but where some of us could rebuild the
machine in a couple of hours given that /etc backup, the other guy might take days...
The server *is* the documentation.
Good post Lisa!
Nathan
Across the board, the number 1 worst attribute that I see working with the PLUG,
technology teams, and mentoring (at or around year 3 in academics, and year 3 - 10 in
IT/linux professionalism) = arrogance.
What exactly is arrogance anyway. Where is this found? Why?
It's the place in the discussion where one person dominates assuming that their
position or knowledge is greater (without investigation). This is also referred to as
"OneUpManShip".
It's the place in the presentation where students and PLUG peers write off the person
who has taken on the role to "present on the subject" based on their ability to verbally
spiel acronyms. This is referred to "Minimizing".
It's the place in the team dissemination of project roles and tasks where a member's
enthusiasm is downplayed based on experience. This is referred to "Dues Hierarchy".
This is the place in the interview where the employer fails to realize all they need to
do is very the work history, since everything for a Linux professional is motivated by
and driven from an ethical systems administrator viewpoint (not any communications
with or responsibilities disseminated from the employer); just as we are woken from
sleep to work on or check systems; and jazzed beyond belief by a well engineered
hardware server like IBM Blade (can you say Fiber channel switched backplane?)...
There are a great many examples where an ego based emotional assumption of or
judgement is placed on our peers, our work, and even ourselves at one point or
another.
The ability to understand linux systems requires a certain type of systemic theory;
which can be daunting for some people; such systems integration can be hard to
troubleshoot [and successfully negotiate within] without inherent abilities but can be
done with a great deal of complex experience, however this is NOT ROCKET SCIENCE.
So the people who do well at what we do, are usually those that find that they
inherently find this easy.
It is, however, far from easy, since most of us work long hours, without adequate
physical exercise and balanced stress free environments. The sheer amount of
responsibility and ultimate reliance in all shops on the unique abilities of the
Unix/Linux systems administrator are daunting to most once they get a full view.
However, we each learn standard process applied across the OSI stack and/or fed
through the kernel/memory/processor for systems or DevOps applications
performance and integration, security or troubleshooting.
Standard process, which includes a few easy to learn rules, relies on logs and linux
tools, completely supplants any experience, past systems history knowledge (available
on/in the server), most visio documentation or RunBooks (which should not exist
unless something cannot be known by server view alone). ---------------------------------------------------
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