监控系统，Nagios 3.4.0 发布了

Nagios是一个监视系统运行状态和网络信息的监视系统。Nagios能监视所指定的本地或远程主机以及服务，同时提供异常通知功能等

Nagios可运行在Linux/Unix平台之上，同时提供一个可选的基于浏览器的WEB界面以方便系统管理人员查看网络状态，各种系统问题，以及日志等等。

2012-05-07发布3.4.0 上一个版本是2011-07-25的3.3.1

改进：ENHANCEMENTS

Use execv() to execute active check commands (#86 - Ton Voon, dnsmichi)
Added service_check_timeout_state configuration variable (Bill McGonigle)
Permanently remove sleep on run_event == FALSE in main loop (Max < perldork@webwizarddesign.com>)
Reduce notification load by moving notification viability check into notification list creation (Opsview Team)
Added code to apply allow_empty_hostgroup_assignment flag to host and service dependencies (Daniel Wittenberg)
Users can now see hostgroups and servicegroups that contain at least one host or service they are authorized for, instead of having to be authorized for them all (Ethan Galstad)
RSS feed boxes fallback if an error occurs (Ethan Galstad)
RSS feeds no longer block main page load (Mike Guthrie)

FIXES

Fix $NOTIFICATIONRECIPIENTS$ macro to contain all contacts assigned to host|service, not only notified contacts (Bug #98 Matt Harrington)
Scheduled Downtime Notifications Resent On Nagios Restart/reload (Bug #124 - ricardo)
NOTIFICATIONTYPE MACRO never became CUSTOM (Bug #168 - Alexey Dvoryanchikov)
Plugged minor memory leaks in notification logic

下载地址：http://cdnetworks-kr-2.dl.sourceforge.net/project/nagios/nagios-3.x/nagios-3.4.0/nagios-3.4.0.tar.gz