Parent - Child relation

[fidia]

Hi,

When it comes to parent-child relation, when a parent goes down/to a critical state, if it is defined as so, Nagios won't send alert that children are unreachable, but in that case, does it send a single alert that the parent is down and all of its children that are defined are unreachable? Or we have to check ourselves who are the children of that particular parent? In case we don't know exactly, if there are more of them.

Just interested to see the entire flow of the function, as well as how Nagios alert us about children/parent state, via e-mail or SMS.

Thx,

--Filip

[benjaminsmith]

Hi Filip,

Thanks for trying out Nagios XI and great question.

So there's some flexibility on notifications here. When you define a Parent-Child relationship, if the parent goes down, then Nagios will assume the child is unreachable until the parent returns to a UP state.

You can configure the children to either send notifications for unreachable status or not. Under this arrangement, you typically would want to disable notifications for the unreachable state to minimize excessive notifications.

In Nagios XI, these settings can be adjusted in the Core Config Manager.

Reference documentation if you'd like to dig deeper. Let me know if you have more questions on this topic.

Parent/Child Host Relationships

Determining Status and Reachability of Network Hosts

--Benjamin