No subject
Sun Feb 10 21:45:11 GMT 2008
every 60 seconds, check the configuration database for changes and execute
jobs as needed. Job execution would consist of checking the jobs
credentials ( if run as X, fork, lock records to job handler PID, descend
privileges to specified user, chdir to script path, wrap the job in a
subprocess, respond to job events as needed ( stderr, ! zero return,
excessive run time, etc ).
My question is, anyone see a better way, or a OSS project out there that
could do the above for me... even a beta project written in python or c++
could be workable by me. If you haven't noticed the varying levels of
sarcasm, I'm somewhat stretched thin right now.
Thanks,
David
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<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>You could probably jerry-rig Nagios =
to do
this for you.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Create a ‘check’ (in =
perl?)
which runs your ‘program’ and you can use Nagios’s =
built-in
pager/up-time/historical recording for your =
needs.<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>Just an =
idea,<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>- =
Mitch<o:p></o:p></span></font></p>
<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p> </o:p></span></font></p>
<div>
<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
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face=3D"Times New Roman"><span style=3D'font-size:12.0pt'>
<hr size=3D2 width=3D"100%" align=3Dcenter tabindex=3D-1>
</span></font></div>
<p class=3DMsoNormal><b><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font =
size=3D2
face=3DTahoma><span style=3D'font-size:10.0pt;font-family:Tahoma'>
ubuntu-us-co-bounces at lists.ubuntu.com
[mailto:ubuntu-us-co-bounces at lists.ubuntu.com] <b><span =
style=3D'font-weight:
bold'>On Behalf Of </span></b>David J W<br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Sunday, March 09, =
2008 5:12
PM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> =
ubuntu-us-co at lists.ubuntu.com<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> [CoLoCo] =
Job/batch
management</span></font><o:p></o:p></p>
</div>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><o:p> </o:p></span></font></p>
<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'>Hello,<br>
First off an introduction as this is my first =
post:<br>
<br>
I work in <st1:City =
w:st=3D"on"><st1:place w:st=3D"on">Denver</st1:place></st1:City>
as a multi-hat developer: php/python/bash/c++ developer, linux system =
admin,
and a intermediate MySQL database administrator, and also my current =
company's
R&D developer. I've been working with *nix since 1996-97 when =
a c++
programming course I took was taught exclusively on v220 terminals =
connected to
a mini-computer. <br>
<br>
I'm on week 2 or maybe 3 of doing research for consolidating my =
company's small
and growing horde of cronjobs... its well over 150 script at this =
point.
The company CEO has directed me to start research and research I have =
done.<br>
<br>
Why crontab sucks for what I need:<br>
<br>
Cron does a fantastic job at what it does, run something at X =
time.<br>
The problem is, what if I need alt_X to run if X exists =
non-zero....
alright so I could do:<br>
x || alt_x<br>
<br>
Now what if I need y to run after x if its successfull<br>
<br>
(x && y ) || alt_x<br>
<br>
Well thats not right? x could perform correctly then =
have y
fail, causing alt_x to run and possibly redo important =
operations/data.<br>
<br>
(x || alt_x) && y - except what if I don't =
want y to
run if alt_x ends up running?<br>
<br>
<br>
Now to make things fun.... lets say there is a chain of 4-5
scripts that must run conditionally. I'm pretty decent with simple =
and/or
logic, but I know this would confuse anyone else to read and =
decypher.
Making it so only I and maybe one or two disciples can maintain the =
abomination
that is the company's backend underworld.<br>
<br>
Plan B (partially in effect)<br>
Complex jobs are written as bash scripts. This is a =
step up
from the above, I can build a job with variables, capture output to temp =
files,
and use mail or sendmail to make customized emails. Whats lacking =
is
resuability. Sure I can write shell script libraries to reuse =
certain
things, like a bash wrapper function to handle individual scripts.... =
but
adding in context sensitive checks "has the word failure, critical, =
OMFG,
etc" would be hard coded in.<br>
<br>
Plan C ( what I am aiming for)<br>
So I'm looking for a cronjob equivalent scheduling system =
that can
be configured by information stored in a database (MySQL, sqllite,
whatever). This phantom program would have the following =
specs:<br>
<br>
Run any process/job as either root or a specific user
account<br>
Record the job fitness ( maximum memory, time stats =
(rtime,
utime, overall)<br>
Historical recording ( save input to DB or serialized =
filestore
)<br>
Context sensitive output handling<br>
Digest email capability ( instead of 120-140 emails a =
day,
I'd be estatic with like 30)<br>
SMP/pager capability<br>
<br>
I've started prototyping the above in python, but I figure =
to get
this to a stable enough product, it would take me 3-4 days of =
development time
then a residual 5-15 hours for the next month or two in responsive
debugging. From my prototypes, I'd have a daemonized python script =
that
would sleep every 60 seconds, check the configuration database for =
changes and
execute jobs as needed. Job execution would consist of =
checking the
jobs credentials ( if run as X, fork, lock records to job handler PID, =
descend
privileges to specified user, chdir to script path, wrap the job in a =
subprocess,
respond to job events as needed ( stderr, ! zero return, excessive run =
time,
etc ).<br>
<br>
My question is, anyone see a better way, or a =
<st1:City
w:st=3D"on"><st1:place w:st=3D"on">OSS</st1:place></st1:City> project =
out there
that could do the above for me... even a beta project written in python =
or c++
could be workable by me. If you haven't noticed the varying levels =
of
sarcasm, I'm somewhat stretched thin right now.<br>
<br>
Thanks,<br>
=
David<o:p></o:p></span></font></p>
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