Nagios Support Forum

Nagios Core 4.0.8rc1, a First Release Candidate of Nagios Core 4.0.8,
has just been posted for wider testing and can be downloaded from
http://nagios.org/download

This version of Nagios Core incorporates many improvements, notably:
* JSON API output is better aligned with the standard, and output size
limits have been lifted.
* Check scheduling has been modified to prevent bunching checks at the
start of their timeperiod.
* Auto-rescheduling of checks has been reimplemented. This can be
enabled by setting auto_reschedule_checks=1 in nagios.cfg, and adjusted
by setting auto_rescheduling_interval and auto_rescheduling_window as
described in the Core 4 Documentation:
http://nagios.sourceforge.net/docs/nagi ... ule_checks.
Auto-rescheduling smoothes the check schedule as it changes over time,
and together with the previous improvements, helps to give a more
uniform system load.
* Core workers handle variable assignments at the start of simple
commands that otherwise don't require a subshell, eliminating the need
for most uses of env.


Thanks to all who reported bugs, contributed patches, and helped test
the updated code. The Changelog is below.

4.0.8rc1 - 08/06/2014
------------------
ENHANCEMENTS
* Removed 8 kB string size limitation in JSON CGIs (Eric Stanley)
* Re-implemented auto-rescheduling of checks (Eric Mislivec)
* Avoid bunching of checks delayed due to timeperiod constraints (Eric
Stanley)
* Limit the number of autocalculated core workers to not spawn too many
on large systems (Eric Mislivec, Janice Singh)

FIXES
* Fixed segfault in archive JSON CGI when plugin output was empty (Eric
Stanley)
* Fixed several possibilities for buffer overflow (Eric Mislivec,
Dirkjan Bussink)
* Fixed Tracker #582, #626: Handle VAR=VAL assignments at the start of
simple commands (Eric Mislivec, Phil Randal)
* Corrected worker communication protocol documentation (Phil Mayers)
* Fixed init script to leave config test log in a better location, let
sysconfig override init script variables, and not remove nagios.cmd when
attempting to start with another instance running (Eric Mislivec, Robin
Kearney)
* Fixed Tracker #361: Downtime notifications not displayed properly
(Andrew Widdersheim)