Access Services From Within the Cluster
less than a minute
All the services deployed in the cluster are visible to each other. That makes it easy to connect them together.
Before you begin
You need to have a UMH cluster. If you do not already have a cluster, you can create one by using the Management Console.
Connect to a service from another service
To connect to a service from another service, you can use the service name as the host name.
To get a list of available services and related ports you can open UMHLens / OpenLens and go to Network > Services.
All of them are available from within the cluster. The ones of type LoadBalancer are also available from outside the cluster using the node IP.
Example
The most common use case is to connect to the MQTT Broker from Node-RED.
To do that, when you create the MQTT node, you can use the service name united-manufacturing-hub-mqtt as the host name and one the ports listed in the Ports column.
The MQTT service name has changed since version 0.9.10. If you are using an older
version, use united-manufacturing-hub-vernemq instead of
united-manufacturing-hub-mqtt.
What’s next
- See Access the MQTT Broker Outside the Cluster
- See Access Factoryinsight Outside the Cluster
- See Access Kafka Outside the Cluster