On 11/19/2012 07:57 PM, Lucy Pelzer wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hi List, > > thanks for your fast replies, but I think you missed my point. I know > that I could configure one parent and alert about spanning tree or do a > lot of other stuff, but this would not help me at all in the following > situations. > > Lets say that I have a lot of important infrastructure behind switch-4 > and switch-5 and that the "normal" stp way is to route through switch-2 > for switch-5 and for switch-4 to switch-3. Lets also suggest that at > switch-2 there is not that much important infrastructure. If now > switch-2 is failing at the same time a really important infrastructure > behind switch-5 fails. I will only get informed that switch-2 failed, > because switch-5 is a child of switch-2, but I will not be informed > about the more important stuff at switch-5. Now I will spend a lot of > time to exchange switch-2 before I even find out that there is something > really important at switch-5 going on only because I could not give it a > second parent (switch-4). Maybe the other problem would have been fixed > in minutes if I would have known about it. I think it is a bad idea to > have such parent/child chains. And please keep in mind that this is just > a simple example and that a network can be much bigger than just 5 switches. > > The other point is that I will never see the real network infrastructure > in the statusmap. As far as I can read the documentation I should also > be able to build up my whole infrastructure like it is in the statusmap. > Or for what is it at all? >
parent/child relations are primarily to block notifications for stuff that is only down because some earlier stage in the traffic shoveling is down. > I would be really pleased if somebody could answer my question. > > - - Why is it in nagios not possible to be parent/child of a other host at > the same time? > - - Why is it a deadlock and where is the problem? > Because if A is a parent of B and B is a parent of A we'd never run out of parents to check when trying to determine the root cause of the problem. -- Andreas Ericsson andreas.erics...@op5.se OP5 AB www.op5.se Tel: +46 8-230225 Fax: +46 8-230231 Considering the successes of the wars on alcohol, poverty, drugs and terror, I think we should give some serious thought to declaring war on peace. ------------------------------------------------------------------------------ Monitor your physical, virtual and cloud infrastructure from a single web console. Get in-depth insight into apps, servers, databases, vmware, SAP, cloud infrastructure, etc. Download 30-day Free Trial. Pricing starts from $795 for 25 servers or applications! http://p.sf.net/sfu/zoho_dev2dev_nov _______________________________________________ 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
