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Full Discussion: [Tip] How to add individual delays to a cron job?
Top Forums UNIX for Advanced & Expert Users [Tip] How to add individual delays to a cron job? Post 302882545 by blackrageous on Tuesday 7th of January 2014 06:30:37 PM
Old 01-07-2014
I am not sure what problem this solves and a number of issues are raised:
  • Big Unix Environment
  • Submitting jobs to thousands of systems
  • load peaks for shared resources
For example, depending on what the task is and the targets, this could just be a matter of updating cron entries on the end systems as opposed to scheduling tasks from the cron of a single system or set of systems. Doing this for a thousand or so systems seems problematic.



I would not do this for a thousand systems, but rather I would either distribute crontabs to remote systems or look for an enterprise sheduling solution (open software; an example of paid-for solutions are products like Control-M).


Enterprise schedulers provide such features as distribution, redundancy and central reporting.


Just a thought.
 

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LEARN ABOUT CENTOS

yum-cron

yum-cron(8)															       yum-cron(8)

NAME

       yum-cron - an interface to convieniently call yum from cron

SYNOPSIS

       yum-cron [config-file]

DESCRIPTION

       yum-cron  is  an  alternate  interface to yum that is optimised to be convenient to call from cron.  It provides methods to keep repository
       metadata up to date, and to check for, download, and apply updates.  Rather than accepting many different command line arguments, the  dif-
       ferent functions of yum-cron can be accessed through config files.

       config-file  is	used  to optionally specify the path to the configuration file to use.	If it is not given, the default configuration file
       will be used.  It is useful to be able to specify different configuration files for different use cases.  For  example,	one  configuration
       file  might  be set to update the repository metadata, and a line could be added to the crontab to run yum-cron frequently using this file.
       Then, another configuration file might be set to install updates, and yum-cron could be run from cron using this file just once each day.

FILES

       /etc/yum/yum-cron.conf
       /etc/yum/yum-cron-hourly.conf

SEE ALSO

       yum (8)

AUTHORS

       See the Authors file included with this program.

BUGS

       There of course aren't any bugs, but if you find any, you should email
	the mailing list, yum@lists.baseurl.org, or consult bugzilla.

Nick Jacek															       yum-cron(8)
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