Shad L. Lords wrote:
> Following up on my previous message about additive inhereritance it appears
> that it only applies to the first used instance. Here is an example config
> that fails. There also appears to be an issue with canceling inheritance.
>
> define host {
> name default
> check_command check_host_alive
> max_check_attempts 3
> check_period 24x7
> flap_detection_enabled 1
> process_perf_data 0
> retain_status_information 1
> retain_nonstatus_information 1
> notification_interval 30
> notification_options d,r,f
> notifications_enabled 1
> register 0
> }
>
> define host {
> name A6
> hostgroups +rhg_A6
> parents SW-CAB_A6
> register 0
> }
>
> define host {
> name 24x7
> notification_period 24x7
> register 0
> }
>
> define host {
> name sec
> hostgroups +nhg_sec
> contact_groups +cg_sec1
> register 0
> }
>
> define host {
> use default,A6,24x7,sec
> host_name dwsoms1
> alias OMS 1
> address theip
> parents null
> }
>
> What I'd like to have the end resulting object be is:
>
> hostgroups rhg_A6, nhg_sec
> contact_groups cg_sec1
> notification_period 24x7
> no parents defined
>
> I end up with an object that has:
>
> hostgroups rhg_A6
> contact_groups cg_sec1
> notification_period 24x7
> parents SW-CAB_A6
>
> If I add a "hostgroups +nhg_sec" line to the last host then it doesn't add
> nhg_sec to the hostgroups instead it replaces it and I end up with only
> nhg_sec. However if I change the "use default,A6,24x7,sec" to "use
> A6,default,24x7,sec" then I do get both hostgroups listed.
>
> Hope this helps track down some potential issues,
>
> -Shad
>
The inheritance cancellation bug you found will be fixed in CVS shortly.
Thanks for pointing that out.
The additive inheritance is not working as you expected because I didn't
design it to work that way. Right now additive inheritance only works
when you inherit/add values at each level of template resolution. For
example:
define host{
name template1
hostgroups hg1
register 0
}
define host{
name template2
use template1
hostgroups +hg2
register 0
}
define host{
name template3
use template2
hostgroups +hg3
register 0
}
define host{
name realhost
use template3
}
Here are the resolved values for the "hostgroups" directives in each
host/template definition:
template1: hg1
template2: hg1,hg2
template3: hg1,hg2,hg3
realhost: hg1,hg2,hg3
The example config entries you provided offer another way to use
additive inheritance which would definitely be useful. I'll work on
getting a patch into CVS in the next day or two to make that work.
Thanks for the feedback and suggestions.
Ethan Galstad,
Nagios Developer
---
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Website: http://www.nagios.org
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