Overriding nfProfile Fields

A common requirement is having a common nfProfile for all environments where a few values can be overridden for each environment. This can be achieved using the global variables section of the common configuration.

The following example sets nfIntanceIds to a different value in a second environment:

1. Define static named variables, in this example NF_INSTANCE_ID, in your nf.yaml, with default values.
2. Define registrationVariables in nf.yaml. This applies the variable in the right place in the nfProfile JSON.
3. Override the value of the variable in your environment variables or nf.yaml configuration with values from a configuration source.

For more information about the variables section of the common configuration, see the discussions about the common SBA configuration and polling the Prometheus REST API. For more information about configuration sources, see the discussion about configuration sources in MATRIXX Configuration.

The following nfProfile example specifies bfc50e58-f6df-49dd-a1f0-d3b66163edb9 with the nfInstanceId property:

nfInstanceId: bfc50e58-f6df-49dd-a1f0-d3b66163edb9
nfType: CHF
nfStatus: REGISTERED
sNssais:
  - sst: 1
fqdn: chf1.webscale.com:33102
ipv4Addresses:
  - 10.31.136.62
nfServices:
  - serviceInstanceId: CHFService1
    serviceName: nchf-convergedcharging
    versions:
      - apiVersionInUri: v2
        apiFullVersion: 15.2009.9
    scheme: http
    nfServiceStatus: Running 
    allowedNfTypes:
      - SMF
    priority: 9
heartBeatTimer: 60

The following nf.yaml file configuration is common to all environments in this example. This configuration creates a static variable, NF_INSTANCE_ID, and uses the registrationVariable property to set a NF_INSTANCE_ID variable with the value of the nfInstanceId field (the default value) in the in the nfProfile. The NF_INSTANCE_ID variable can be used (in other contexts) to override the value in the nfProfile.

variables:
  static:
    -
      name: NF_INSTANCE_ID
      value: "bfc50e58-f6df-49dd-a1f0-d3b66163edb9"
nrf:
  registrationVariables:
    -
      jsonPath: $
      field: nfInstanceId
      variable: NF_INSTANCE_ID

The following excerpt from a Helm values file uses NF_INSTANCE_ID to override the nfInstanceId value for a second environment:

sba-5gc-chf:
  configuration:
    container:
      environment:
        - name: "variables.NF_INSTANCE_ID"
          value: "c101dc58-e1b5-42e8-95bd-ce6e2973a802"