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This configuration option allows for a comma separated list of namespaces that will be filtered/disabled for connections to this MQTT Server.
This filter will apply applies to both the default namespaces (Elecsys, Xirgo, Sparkplug A and Sparkplug B) and any custom namespaces configured.
| Note |
|---|
| The ‘Filtered Namespaces' are applied to the respective server only. If connection is switched to another server within the same server set, filtered namespaces are not applied. |
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Example
A system with Edge devices publishing using the Sparkplug B protocol to Server A and Edge devices publishing MQTT messages to another Server B.
In this instance the Access Control Lists (ACLs) on Server B may not allow for the subscriptions required by MQTT Engine for the Sparkplug B protocol. Setting the Filtered Namespaces for the MQTT Engine Server configuration for Server B to "Sparkplug B" will disable the namespace for this server connection.
MQTT Engine Namespaces Default - Sets
The MQTT Engine Namespaces > Default > Sets tab allows for specific Server Sets to be associated with the namespace.
This configuration expands on the MQTT Engine Servers - Filtered Namespaces by applying to all servers in a specific server set. If connection is switched to another server within the same server set, filtered namespaces are applied.
MQTT Engine Namespaces Default - Filters
The MQTT Engine Namespaces > Default > Filters tab allows for specific Group or Group/EdgeNode combinations to be included in the MQTT Engine subscriptions to specific MQTT Servers.
| Note |
|---|
The ‘Filters' are applied to the respective server(s) only. If connection is switched to another server within the same server set, filters are not applied and the required Sparkplug B subscriptions will be used. Ensure that any Access Control Lists (ACLs) configured on the server match the Group or Group/EdgeNode configured in the Namespace Filter |
Example for the Sparkplug B namespace
Setting the Group ID to 'Location1' will limit the subscriptions on the specific server to:
- spBv1.0/Location1/#
- spBv1.0/STATE/primary_host_id
Setting the Group ID to 'Location1' an Edge Node ID to 'Stream1' will limit the subscriptions on the specific server to:
- spBv1.0/Location1/+/Stream1
- spBv1.0/STATE/primary_host_id
MQTT Engine Namespaces Custom - Sets
Custom Namespaces are used to provide support for generic, non Sparkplug compliant MQTT messages with string based payloads. The MQTT Engine Namespaces > Custom > Sets tab allows for specific Server Sets to be associated with the namespace.
This configuration expands on the MQTT Engine Servers - Filtered Namespaces by applying to all servers in a specific server set. If connection is switched to another server within the same server set, filtered namespaces are applied.
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