NATS error message after 10.1 installation

Affected versions

DataMiner 10.1 and higher

Cause

Introduction of inter-process communication via NATS [ID_27496][ID_28082][ID_28131][ID_28660]

Fix

Manual firewall configuration

Issue description

From DataMiner 10.1.0 onwards, the NATS and NAS services are automatically installed on each NATS-enabled DataMiner Agent. More information is available in the DataMiner v10.1.0 release notes.

However, if the firewall update fails after an upgrade to DataMiner 10.1.0 or higher, this can result in the following DataMiner run-time error message:

NATS has stopped, restarting …

To solve this issue, manually configure the firewall settings as described in Configuring a DataMiner Agent, or follow the steps mentioned in the answer to the question How to solve 'NATS has stopped working, restarting…' after an upgrade? on DataMiner Dojo.