That's an interesting link - but unfortunately I don't think it really covers the situation where a host goes down or becomes unreachable. It may be the case that Nagios is not suitable for this purpose, but I thought I would check on here in case anyone had done anything like this previously.
Cheers, Chris 2009/12/10 Marcel <mits...@gmail.com>: > Maybe this would help: > http://onlamp.com/onlamp/2006/05/25/self-healing-networks.html > > On Thu, Dec 10, 2009 at 3:08 PM, Christopher McAtackney <crist...@gmail.com> > wrote: >> >> Hi all, >> >> I have a need to control an Active / Passive pair of components and >> was wondering if anyone had tackled this problem with Nagios? >> >> The scenario is as follows; >> >> Host A has SERVICE_1 installed and running. Host B has SERVICE_2 >> installed, but not running. >> >> The desired functionality is to detect when SERVICE_1 is not running >> (or that Host A is down / unreachable), and then to start SERVICE_2 on >> Host B. >> >> I believe I can do this with Nagios by defining an event handler on >> SERVICE_1 which will make the appropriate call to start SERVICE_2 on >> Host B >> >> Would it make sense to store the relationship between SERVICE_1 and >> Host B / SERVICE_2 as a service macro, e.g. >> $_SERVICE_PASSIVE_HOSTNAME, $_SERVICE_PASSIVE_SERVICENAME? >> >> There are too many scenarios in which the SERVICE_1 might come back up >> to try automate the switching off of SERVICE_2 I believe, e.g. if >> someone pulled a network cable on Host A accidently, then plugged it >> in 15 minutes later - during which time Nagios detects that it is down >> and so starts up SERVICE_2. The user then plugs the network lead back >> in and now we have two Active instances running - which is what we >> specifically wanted to avoid. Even if Nagios detects that the primary >> component is up, it's still too late because any Active / Active >> overlap will cause problems for this particular application. >> >> I can't think of any way to automate that side of things - but does >> the general concept of having Nagios start up a Passive partner make >> sense? >> >> Thanks for any insight you have, >> >> Chris >> >> >> ------------------------------------------------------------------------------ >> Return on Information: >> Google Enterprise Search pays you back >> Get the facts. >> http://p.sf.net/sfu/google-dev2dev >> _______________________________________________ >> 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 > > ------------------------------------------------------------------------------ Return on Information: Google Enterprise Search pays you back Get the facts. http://p.sf.net/sfu/google-dev2dev _______________________________________________ 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
