Clarification need on configuring nagios to monitor multiple hosts

[Joerg Linge]

Zama Ques schrieb:
> Hi All ,
>
> I am new to nagios configuration . I  successfully installed nagios on one of my linux server  and now monitoring two hosts .
>
> For monitoring of remote hosts , I created a new config file by renaming localhost.cfg file under objects directory.
>
> I renamed the entries "hostname" and "address"  and other entries under "DEFINE HOST" directive to point to the new server which I am planning to monitor . The settings looks like this
>
> define host{
>          use                     linux-server            ; Name of host template to use
>                              ; This host definition will inherit all variables that are defined
>                              ; in (or inherited by) the linux-server host template definition.
>          host_name               node1
>          alias                         node1
>          address                   192.168.122.167
>          }
>
>
> define host{
>          use                     linux-server            ; Name of host template to use
>                                     ; This host definition will inherit all variables that are defined
>                                     ; in (or inherited by) the linux-server host template definition.
>          host_name          node2
>          alias                    node2
>          address              192.168.122.218
>          }
>
>
> Also modified "DEFINE SERVICE"  directive to monitor few services on both the remote hosts . Few of the settings looks like this
>
> define service{
>          use                             local-service         ; Name of service template to use
>          host_name                       node1
>          service_description             Current Users
>      check_command            check_nrpe!check_users
>          }
>
>
> define service{
>          use                             local-service         ; Name of service template to use
>          host_name                       node2
>          service_description             Current Users
>      check_command            check_nrpe!check_users
>          }
>
> The checks are working fine . But my confusion here is in terms of scalabilty .
> What if I want to monitor 100 servers and 5 services in each of the servers. Does that mean I need to create 100 "define host"  directives for each of these servers . Also , monitoring 5 services means i have to create 5 "define service" for each host , that means 500 "define service" directives.
> If this is the case , then it will be really painful to configure and manage if there are many servers to monitor.
>
>
> Can't I use comma separated ip address and hosts like this
>
> define host{
>
>          use                     linux-server            ; Name of host template to use
>
>                              ; This host definition will inherit all variables that are defined
>
>                              ; in (or inherited by) the linux-server host template definition.
>
>          host_name               node1,node2
>
>          alias                         node1
>
>          address                   192.168.122.167,192.168.122.218
>
>          }
>
>
> define service{
>
>          use                             local-service         ; Name of service template to use
>
>          host_name                       node1,node2
>
>          service_description             Current Users
>
>      check_command            check_nrpe!check_users
>
>          }
>
> . Will it work . Have not tried yet. What you people suggest should be the approach  if somebody is planning to monitor more than 50 servers.
>
> Any help will be highly appreciated

http://nagios.sourceforge.net/docs/3_0/objecttricks.html

This is a good starting point i think

Joerg

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