PMI extensions - migration to EF2.0

[michal_nalezin]

Dynatrace will discontinue support for PMI in Extension Framework 1.0 (EF1.0). We are currently working on replacement, that should be ready by end of the year. We will keep PMI EF1.0 functional until the new approach is ready and we'll provide sufficient grace period to migrate.

Overview

Performance Monitoring Infrastructure (PMI) is an IBM concept used mostly in context of WebSphere application server. 

What it means to our customers 

This means that PMI extensions need to be migrated around end of the 2024. Please already start planning that migration especially for custom extensions.    

Timeline 

We do not yet have committed timeline.

Alternative Solutions 

For WebSphere connection pools please use new extension Connection Pools: WebSphere Liberty.

[michal_nalezin]

We have reassessed the approach to PMI extensions and revisited our decision on turning them off completely.
As a result this message have been edited, please find original content below.

[erh_inetum]

Hi @michal_nalezin ,

In our case of our customer it's a problem that PMI support in Extension Framework 1.0 (EF1.0) is discontinued.

We created PMI extension for capturing PoolSize and FreePoolSize metrics for JCA WAS Hosts. PoolSize metric is captured with IBM WebSphere Application Server extension from Hub but FreePoolSize isn´t. So for that reason we created the PMI extension and captured this metric which is very important for us.

Add the new extension Connection Pools: WebSphere Liberty as it's suggested as alternative solution is not valid for us because we haven´t Liberty.

And as I told,  IBM WebShpere Application Server extension doesn´t have the two metric we need; FreePoolSize is missing.

Is any extension EF 2.0 thathave FreePoolSize metric for JCA WAS Host?

Thanks in advance.

Regards,

Elena.

[gilles_tabary]

Hello.

We are (very specifically) interested by WAS PMI metric DeclaredThreadHungCount. We use WAS standard (not Liberty). We have a custom EFv1.0 PMI / JMX extension for this.

Could this metric be added to the (nice) ootb provided extension IBM WebSphere Application Server ? So we wouldn't have to migrate / re-develop a custom solution ?

Regards.

[matthias_dillie]

Any news about the new pmi-extension and the release date?

[wesleycqy7]

We are also facing issue of PMI metric DeclaredThreadHungCount not being available in new extension. 

Any updates on this?

Thanks

[ashokswaminatha]

we are also interested in monitoring hung state of thread in PMI in the new Extensions 2.0, is there any workaround available?

[erh_inetum]

Hi @michal_nalezin ,
To migrate PMI extension to framework 2.0, is it possible to use "JMX 1.0 Conversion" tool from Dynatrace Extension in Visual Studio Code? I think it should because one of the PMI data collection interfaces comes from Java Management Extension (JMX) interface as it's said at the end of this page.
But reading this EOL note is not clear for me:

Could you clarify it?
Thanks in advance.

[Mike_L]

Eventually that's indeed something that will be possible. For now, Extension Framework 2.0 does not support PMI, so it would not work.

[erh_inetum]

Thanks for your answer, Mike.

So what can we do to not loose monitoring after March 2025 when PMI was unsupported? The new extension Connection Pools: WebSphere Liberty as it's suggested as alternative solution is not valid for us because we haven´t Liberty.

Thanks,

Elena.

[Mike_L]

The end of life of JMX and PMI in Extension Framework 1.0 has been delayed to make sure that customers get sufficient time to migrate. It will not stop working in March anymore.