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Pro-tip: Exclude entities by tag (find the non-matching entities)

The_AM
Dynatrace Champion
Dynatrace Champion

How do you exclude entities by tagging non-match?

Also known as filter for "negate match" or "does not match".

 

This question comes up from time-to-time, and I'd just responded to the same on another thread. I thought it worthwhile to share as a Dynatrace tip!

 

Option 1)

You could have many tags, it is true. For all the different conditions you could think of.

eg: include or exclude Kubernetes nodes

The_AM_0-1664238177434.png

 

Then say, if you want to exclude Linux-only OS, you would need another tag for 'isLinuxOS': yes/no

For Windows, 'isWindowsOS': yes/no

And so on....

This is cumbersome, I agree.

 

Option 2) [Recommended]

However, an easier way may be to make a tag called "exclude" and all the optional tag values point to the condition you'd like to exclude. You may add many different options here.

 

The_AM_1-1664238177442.png

 

The Results!

You can see here, the results can be quite powerful.

I could exclude all my Kubernetes nodes, to find other types of hosts.

The_AM_2-1664238263602.png

 

It is even possible to combine multiple conditions.

The_AM_3-1664238317168.png

 

Technically, you could filter to the same entity by combining an inclusion and exclusion tag. It all depends on the problem you'd like to solve.

The_AM_4-1664238387869.png

Regards,
Andrew M.
1 REPLY 1

ChadTurner
DynaMight Legend
DynaMight Legend

very nice little trick to work around that negations of filtering 🙂 Kudos to you @The_AM 

-Chad