Submit a ticketCall us

WebinarDatabase Roundtable – Expert Database Professionals Feel Your Pain

In this video broadcast, Head Geek™ Tom LaRock is joined by Karen Lopez, Tim Chapman, and David Klee. They’ve known each other for many years, so this discussion was like four friends getting together to talk data and databases. They discussed diagnostic data collection, common performance root causes, reactive tuning versus proactive, and more. Join us for an engaging discussion on these topics! Plus, Tom LaRock will be available to answer your questions live.

Register now.

Home > Success Center > Network Performance Monitor (NPM) > NPM - Knowledgebase Articles > Child group with two or more parents shows inconsistent state

Child group with two or more parents shows inconsistent state

Created by Daniel Polaske, last modified by MindTouch on Jun 23, 2016

Views: 1,295 Votes: 1 Revisions: 4

Overview

You may have an environment in which two redundant routers are set up as two independent parent nodes in a dependency for a single group of nodes.  When only one of the routers goes down, the child group still triggers and consequently a flood of alerts is sent as the nodes miss pings but still do not go unreachable.  This is due to the fact that one of the parent nodes is still up.

Environment

All Orion environments

Cause 

Two parent nodes for one child group or node creates a conflict in status where the child group does not go unreachable due to having at least one parent in an up state.

Resolution

  1. Create a group for the parent nodes and make the group the singular parent of the child group.
  2. Set the parent group Status Rollup to Show Worst.  That way, when either of the nodes go down, the child node status is changed to unreachable as the singular parent goes down.
  3. For more information, see the Using Orion Groups and Dependencies for best practices.

 

Last modified

Tags

Classifications

Public