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Enhancement Advisory crontabs enhancement update

Advisory: RHEA-2013:0031-1
Type: Product Enhancement Advisory
Severity: N/A
Issued on: 2013-01-07
Last updated on: 2013-01-07
Affected Products: Red Hat Enterprise Linux (v. 5 server)
Red Hat Enterprise Linux Desktop (v. 5 client)

Details

An updated crontabs package that adds one enhancement is now available for Red
Hat Enterprise Linux 5.

The crontabs package contains root crontab files and directories. Crontab files
are used to schedule jobs to be executed by the cron daemon, such as cronie.
Crontabs handles a basic system function so it should be installed on your
system.

This update adds the following enhancement:

* The cron daemon had no mechanism to manage cron job rescheduling in a shared
environment selectively. Therefore, when a large number of hosts attempted to
execute their jobs at the same time, a network or server running the jobs could
become overloaded. This update modifies the run-parts script to provide cron job
randomization. When cron job randomization is enabled and configured, and a cron
job fails to be executed at the scheduled time, cron retries to execute jobs
after a random interval. The network and server overloading due to too many
simultaneous cron jobs can no longer occur. (BZ#532157)

All users of crontabs are advised to upgrade to this updated package, which adds
this enhancement.


Solution

Before applying this update, make sure all previously-released errata
relevant to your system have been applied.

This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
https://access.redhat.com/knowledge/articles/11258

Updated packages

Red Hat Enterprise Linux (v. 5 server)

SRPMS:
crontabs-1.10-11.el5.src.rpm     MD5: 28ccd87d0cf89bf8dc598f119516b58e
SHA-256: b4accd363ca66691b502546a9276f1868a3a512680116e9eb182a499f6ff0da0
 
IA-32:
crontabs-1.10-11.el5.noarch.rpm     MD5: 367be2ef7651f244ae777848afdc07be
SHA-256: d2a9279fee8609803565cf696bee3c9a7c0c672d48faa6072b7482051d88fa77
 
IA-64:
crontabs-1.10-11.el5.noarch.rpm     MD5: 367be2ef7651f244ae777848afdc07be
SHA-256: d2a9279fee8609803565cf696bee3c9a7c0c672d48faa6072b7482051d88fa77
 
PPC:
crontabs-1.10-11.el5.noarch.rpm     MD5: 367be2ef7651f244ae777848afdc07be
SHA-256: d2a9279fee8609803565cf696bee3c9a7c0c672d48faa6072b7482051d88fa77
 
s390x:
crontabs-1.10-11.el5.noarch.rpm     MD5: 367be2ef7651f244ae777848afdc07be
SHA-256: d2a9279fee8609803565cf696bee3c9a7c0c672d48faa6072b7482051d88fa77
 
x86_64:
crontabs-1.10-11.el5.noarch.rpm     MD5: 367be2ef7651f244ae777848afdc07be
SHA-256: d2a9279fee8609803565cf696bee3c9a7c0c672d48faa6072b7482051d88fa77
 
Red Hat Enterprise Linux Desktop (v. 5 client)

SRPMS:
crontabs-1.10-11.el5.src.rpm     MD5: 28ccd87d0cf89bf8dc598f119516b58e
SHA-256: b4accd363ca66691b502546a9276f1868a3a512680116e9eb182a499f6ff0da0
 
IA-32:
crontabs-1.10-11.el5.noarch.rpm     MD5: 367be2ef7651f244ae777848afdc07be
SHA-256: d2a9279fee8609803565cf696bee3c9a7c0c672d48faa6072b7482051d88fa77
 
x86_64:
crontabs-1.10-11.el5.noarch.rpm     MD5: 367be2ef7651f244ae777848afdc07be
SHA-256: d2a9279fee8609803565cf696bee3c9a7c0c672d48faa6072b7482051d88fa77
 
(The unlinked packages above are only available from the Red Hat Network)


These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:
https://www.redhat.com/security/team/key/#package

The Red Hat security contact is secalert@redhat.com. More contact details at http://www.redhat.com/security/team/contact/