# CirrusLink Transmission/Engine module: where to find keystore

**URL:** <https://forum.inductiveautomation.com/t/cirruslink-transmission-engine-module-where-to-find-keystore/106946>\
**Category:** 3rd Party Modules\
**Tags:** ignition81\
**Created:** [June 3, 2025, 10:08am UTC](https://forum.inductiveautomation.com/t/cirruslink-transmission-engine-module-where-to-find-keystore/106946 "2025-06-03T10:08:05Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![mateo.duren](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mateo.duren/32/76636_2.png) [@mateo.duren](https://forum.inductiveautomation.com/u/mateo.duren)\
**Post date:** [June 3, 2025, 10:08am UTC](https://forum.inductiveautomation.com/t/cirruslink-transmission-engine-module-where-to-find-keystore/106946/1 "2025-06-03T10:08:05Z")

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Hi all,  
we are working on an Ignition (8.1.48) implementation on OpenShift (Kubernetes) with the integration of the 3rd party modules:

- CirrusLink MQTT Distributor 4.0.29
- CirrusLink MQTT Transmission 4.0.29
- CirrusLink MQTT Engine 4.0.29

We base the implementation on the [icc2023-ignition-k8s](https://github.com/thirdgen88/icc2023-ignition-k8s) project.

For the implementation we want to **automatically** insert the certificates into the ignition keystores, the question therefore remains: which keystores do these modules use?

- CirrusLink MQTT Distributor 4.0.29 : the web UI keystore ssl.pfx ([Secure MQTT Communication using SSL or TLS - MQTT Modules for Ignition 8.x - Confluence](https://docs.chariot.io/display/CLD80/Secure+MQTT+Communication+using+SSL+or+TLS))
- CirrusLink MQTT Transmission 4.0.29 : **location unknown**
- CirrusLink MQTT Engine 4.0.29 : **location unknown**

Many thanks in advance, Mateo.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/0/f/0f2f94e344ece26b4c9458a05bcc3c19f62236df.png)

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<div class="post-metadata">

**Author:** ![mateo.duren](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mateo.duren/32/76636_2.png) [@mateo.duren](https://forum.inductiveautomation.com/u/mateo.duren)\
**Post date:** [June 9, 2025, 1:08pm UTC](https://forum.inductiveautomation.com/t/cirruslink-transmission-engine-module-where-to-find-keystore/106946/2 "2025-06-09T13:08:42Z")

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Hi all, with Wes Johnson's great help, I'm happy to inform that the above has been resolved.  
I have added the (simplified) code example used for the solution to the CirrusLink forum, see: [Transmission/Engine module: where to find keystore - #5 by mateo.duren - MQTT Modules - Cirrus Link Forum](https://forum.cirrus-link.com/t/transmission-engine-module-where-to-find-keystore/759/5).

Hopefully this can help someone else in the future as well.  
Kind regards, Mateo Duren