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In our initial foray into the OpsMgr SDK in Powershell, we examined the .GetDerivedMonitoringClasses() method to explore the lineage of classes in your OpsMgr management group.
Part 1 - OpsMgr 2007: Exploring Class Lineage in Powershell
In the second installment, we examined how easy it was to create a function to enumerate the lineage of every class in OpsMgr recursively.
Part 2 - OpsMgr 2007 - Exploring Class Lineage in Powershell: Part 2 – Recursive Enumeration
In this installment, we're going to look at the .GetMonitoringRelationshipClasses() method to explore the relationships between classes in Operations Manager. Given a target class, this method returns all the relationships for which the target class is either the source or the target. Again nothing fancy, but this simple function does provide an easy way to enumerate relationships without opening multiple MPs in the MP Viewer or Authoring console.
From here, we can extend this function to enumerate all child classes and their relationships recursively…more on that tomorrow. Let's execute this function and have a look at the output. This sample will return the relationships of the SQL DB Engine class…you'll notice as in previous examples we pass the Name, not DisplayName.
Sample Script (save with .ps1 extension run from OpsMgr Command Shell prompt)
1:
2: function GetRelationships
3: {param ($Class) 4:
5: (get-monitoringclass | where {$_.Name -eq "$Class"}).GetMonitoringRelationshipClasses()|fl DisplayName, Description 6: }
7:
8: #call the function specifying target class in quotes
9: GetRelationships "Microsoft.SQLServer.DBEngine"
Sample Output
And there it is. We see the hosting relationships between DB Engine (source) and SQL Database (target). No need to return much more than this to get the idea. If you want to see the less friendly name, add Name to the list of fields by DisplayName in the function.
Tomorrow, we'll dress this up a bit to return a list of all relationships for all classes.
In parts 5 and beyond, we'll look at combining these two functions with some formatting on the output to create some really useful reference material.