Hi Mike, Mod-Gearman is more or less the successor of DNX and probably the fastest worker available at the moment. It has hostgroup/servicegroup affinity included as well as embedded perl support. It is high available with automatic loadbalancing when you setup at least 2 worker per network segment. But Mod-Gearman has a central configuration/scheduling. So when all master are down/unreachable, no checks are done. Merlin is the only addon capable for multimaster setups.
I would try Merlin for a Multi-Master with Mod-Gearman worker but i never tried that. I usually use only Mod-Gearman with a single Master and vmware/veritas/heartbeat/whatever failover solution. All this applys to the Nagios opensource version. I cannot say anything about Nagios XI. Bye, Sven On 1/25/12 23:44, Mike Lindsey wrote: > There are a lot of options.. DNX, Merlin, mod_gearman to name a few... > I could read the docs (and have read a good portion of some of them) and > could implement test environments (and will eventually need to) but > first I want opinions from people who've done this at large scale. > > I need to improve on our load distribution and failover mechanisms. > Right now worker node outages are handled through freshness checking, > and master node outages are handled through a load balanced vip and some > fancy cron jobs that kick up a cold spare. > > What are the better options for local load distribution and geographic > master failover? Which options will better handle thousands of servers > across a dozen colos, in half a dozen countries, when the goal is that > no single host (or colo!) going offline can be allowed to have an effect > on any other subset of the infrastructure? Which options should I avoid? > > Currently running Nagios Core 3.2.1 with NSCA 2.9 on mostly FreeBSD > systems. Soon that should be Core 3.3, with XI on top, plus whatever > load distribution mechanism wins the dog fight. ------------------------------------------------------------------------------ Keep Your Developer Skills Current with LearnDevNow! The most comprehensive online learning library for Microsoft developers is just $99.99! Visual Studio, SharePoint, SQL - plus HTML5, CSS3, MVC3, Metro Style Apps, more. Free future releases when you subscribe now! http://p.sf.net/sfu/learndevnow-d2d _______________________________________________ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null
