[Nagios-announce] Nagios Core 4.0.8 Available

Evert · August 13, 2014, 6:01am

Nagios Core 4.0.8 has just been released and can be downloaded from 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/nagioscore/4/en/configmain.html#auto_reschedule_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.

4.0.8 - 08/12/2014

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

Removed quotes from numeric duration values in JSON CGIs (Eric Stanley)
Fixed escaping in JSON CGIs so all required characters are escaped, and in the correct order (Eric Stanley)
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)
Fixed Tracker #630: Recognize ‘<’ and ‘>’ as redirection operators (Eric Mislivec)
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)

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Eric Mislivec
Application Developer

Nagios Enterprises, LLC
Email: [email protected]
Web: nagios.com