Verify NATS is Running

From DataMiner 10.2.7/10.2.0 [CU14] up to and including 10.5.0 [CU2]/10.5.5, the VerifyNatsIsRunning prerequisite check is included in upgrade packages. It verifies whether the crucial NATS service used by DataMiner is running on all required DataMiner Agents. This prevents situations where a DataMiner System becomes non-functional after an upgrade because of preexisting issues with NATS. If this check fails, troubleshoot NATS before continuing the upgrade.

If you have migrated your system to BrokerGateway, and the automatic NATS configuration has not been disabled (using NATSForceManualConfig), this prerequisite check will verify if the single source of truth for the NATS communication (i.e. ClusterEndpointConfiguration.json) is present and contains at least one viable endpoint entry.

From DataMiner 10.5.0 [CU3]/10.5.6 onwards, this check is replaced by the Verify NATS Cluster check.

Tip

For more information on how to troubleshoot NATS, see Troubleshooting – NATS.

Important

Upgrading from a version prior to Main Release Version 10.1.0 [CU12] or Feature Release Version 10.2.3 to DataMiner 10.2.7 might result in issues due to files changing between these releases. To avoid this, upgrade to Feature Release Version 10.2.8 [CU0] or any Main Release Version.