parent/child relationship in distribute environment

[Assaf Flatto]

HyunSung Jang wrote:
> On Wed, Feb 24, 2010 at 9:45 PM, Assaf Flatto <nagios at flatto.net 
> <mailto:nagios at flatto.net>> wrote:
>
>     HyunSung Jang wrote:
>
>     first thing to remember is a nagios server has no parent since he
>     is the
>     source of test .
>     but in a distributed nagios setting there is the exception to the
>     rule.
>
> yes.
>  
>
>     > thank you for your comment,
>     > but, I think i already configured like you just said.
>     > actually A1,A2 is not a server but it is our access switch i mean
>     > there are many servers under A1, A2
>     >
>     > let me describe my environment again,
>     >
>     > BB1->A1->server1, server2, nagios1(center), nagios2(for servers
>     under
>     > A1), nagios3(for servers under A2), nagios4(just for switch
>     monitoring)
>
>     So all nagios monitoring servers are on the same network connected to
>     the same switch ?
>
> your are right. all nagios monitoring servers are on the same network 
> and same switch.
>  
>
>     > BB1->A2->server3, server4...
>     >
>     > my central server (nagios1) has all objects
>     > definition(BB1,A1,A2,server1,server2,server3....etc)
>     > and then nagios2 has only 2 defined servers which is server1 and
>     server2
>     > nagios3 has server3, server4
>     >
>     > if I start nagios daemon on nagios3, it shows me an error like
>     > "there's no parent definition for server3"
>     > because parent for server3 is A2 and parent for A2 is BB1.
>     > and I didn't put config for A2 and BB1 to nagios3.
>     >
>     That it the reason - server3 has a definition of a parent in the
>     file on
>     nagios3 , and since the definition does not match the configuration
>     files , that is the error you get .
>     > I have no problem when i starting nagios in my central server,
>     > cuz central server has all configurations of my servers and switches
>     >
>     > but distributed nagios server which is nagios3 won't start.
>     >
>     > am I doing right or is there a misunderstanding to config nagios
>     properly?
>     >
>     The distributed nagios server should hold parent/child definition only
>     for the hosts they monitor directly, but not for anything "upstream"
>     toward the central server, since they are not being monitored from
>     that
>     machine , the central server should hold for every thing , so it can
>     know the topology and structure , if all the nagios servers are on the
>     same switch - the switch should be the parent for the distributed
>     servers .
>
>
> oh, I got it.
> so you mean, "server3" should configured to its parent to 
> nagios2(distribute monitor server) directly even if
> there are A2 and BB1 switches between them. because nagios2 monitor 
> server3 directly.
> am I correct?
>

Nope, it should be as follows (example  parent  -> child )
nagios2 -> A2 -> BB1 - Server 3

and A2 and BB1 should be hosts defined in nagios2 , to match the parent 
tree.



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