gnmic supports exporting subscription updates to multiple NATS Streaming (STAN) servers/clusters simultaneously

A STAN output can be defined using the below format in gnmic config file under outputs section:

    type: stan # required
    address: localhost:4223 # comma separated STAN servers
    subject: telemetry # stan subject
    subject-prefix: telemetry # stan subject prefix, the subject prefix is built the same way as for NATS output
    username: # STAN username
    password: # STAN password
    name: # client name
    cluster-name: test-cluster # cluster name
    timeout: # connection timeout
    ping-interval: # STAN ping interval
    ping-retry: # STAN ping retry

Using subject config value a user can specify the STAN subject to which to send all subscriptions updates for all targets

If a user wants to separate updates by targets and by subscriptions, subject-prefix can be used. if subject-prefix is specified subject is ignored.