-----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? 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? Greetings Lucy On 17.11.2012 21:44, Giles Coochey wrote: > On 17/11/2012 17:08, Lucy Pelzer wrote: > Hi List, > > I am in charge for a big network infrastructure and at the moment we > evaluate solutions for our nagios monitoring with configuration via > monarch. I really would like to create the new solution with nagios and > puppet. There is only one big problem. In our infrastructure there are a > lot of switches connected together like this: > > ------------ > | switch-1 | > ------------ > / \ > / \ > / \ > ------------ ------------ > | switch-2 |-----| switch-3 | > ------------ ------------ > | | > | | > ------------ ------------ > | switch-5 |-----| switch-4 | > ------------ ------------ >> Hi Lucy, > >> Although you have redundant physical interconnects for your switches, >> Spanning Tree, or Rapid Spanning Tree or even Multiple Spanning Tree >> protocols are taking effect and (probably) setting switch-1 as the Root >> with the other switches set to a higher spanning tree priority value - >> in any case, at layer two, during normal operation you don't have >> multiple active parents in the layer-2 infrastructure. > >> While you have redundancy, physically for your infrastructure, you are >> only using those links (for each VLAN at least), in a non-redundant way. > >> Setup your Nagios child / parent relationships as per spanning tree has >> worked out how it should be when everything is up, add some monitoring >> for spanning-tree within Nagios, that way everything will work, and >> you'll always be informed when something is wrong. > >> Thanks > >> Giles > > > All the time I try to configure this switch connections in nagios with > more than one parent, where the hosts are at the same time parent and > child, I get the following error: > > ERROR: The host 'switch-2' is part of a circular parent/child chain! > ... > > I know by now that this is because nagios has to be hierarchically, but > I do not understand why. Maybe somebody could tell me exactly why I > can’t configure this in nagios or better could tell me how I can do it. > I only found the explanation that this could conduct a deadlock. Maybe I > am wrong, but is this not a likely network infrastructure? At last it is > no problem to build something like this with STP running in your network. > > > Great Thanks in advanced > > Lucy >> >> ------------------------------------------------------------------------------ >> >> 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 > > > > > ------------------------------------------------------------------------------ > 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 > -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) Comment: Using GnuPG with undefined - http://www.enigmail.net/ iQEcBAEBAgAGBQJQqoEvAAoJEBSbfrVvipeepxAIALhMBXkAgTKKtfLJaknRQ7hx QH6zuV2CbU0pUHbNrdtGhdT+GvoLV8zp0+aSinFxIhNDGbc13xEJQ0zzLA4t4Xjj 9SH8HvK7KHYYUvLAuW3Vxaq69sruEZW6J22GRB7tzJk02a8IqZjEUGa1ygwSC1NS KuWiji7JRS/p1D7M8QI+bBJs0SYpAWHAmfCGno9JJtJg80p/0SMwvioy+trolg2E QUQbWN+XWolgRR9YD75dJHugjD2RJysdbs/6hOzYnMKkpMi11IS9OvLGmWzdHpCh ENhcsN+2O290A39Bvt8fbjavUt6Jl2o88EXhzTtNaTFgViSNXvGTh64bCkHSy58= =Ka95 -----END PGP SIGNATURE----- ------------------------------------------------------------------------------ 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
