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By default tracing is disabled. To enable it there are two ways:

A) System Property

Change the flag otel.sdk.disabled to false in the application.yaml (New Delhi) 

Code Block
languageyml
themeMidnight
otel:
  sdk:     
    disabled: ${ONAP_SDK_DISABLED:false}
    south: ${ONAP_TRACING_SOUTHBOUND:true}   
  instrumentation:
    spring-webflux:
      enabled: true
  1. otel.sdk.disabled: enable/disable tracing all together
  2. otel.sdk.south: if ONAP_SDK_DISABLED is false then we can enable/disable southbound tracing
  3. otel.instrumentation.spring-webflux.enabled: if ONAP_SDK_DISABLED is false we can enable/disable northbound tracing

B) Enviroment Variable

Have the environment variables, this way you don't need to change the application.yaml and rebuild the docker image

Code Block
languageyml
themeMidnight
ONAP_SDK_DISABLED=false
ONAP_TRACING_SOUTHBOUND=true
OTEL_INSTRUMENTATION_SPRING_WEBFLUX_ENABLED=true
  1. ONAP_SDK_DISABLED: enable/disable tracing all toghether
  2. ONAP_TRACING_SOUTHBOUND: if ONAP_SDK_DISABLED is false then we can enable/disable southbound tracing
  3. OTEL_INSTRUMENTATION_SPRING_WEBFLUX_ENABLED: if ONAP_SDK_DISABLED is false we can enable/disable northbound tracing

Possible Combinations 

So we can have the following combinations:

TracingNorthboundSouthboundFlags
(error)(error)(error)

ONAP_SDK_DISABLED=true

(tick)(tick)(tick)

ONAP_SDK_DISABLED=false; ONAP_TRACING_SOUTHBOUND=true; OTEL_INSTRUMENTATION_SPRING_WEBFLUX_ENABLED=true

(tick)(tick)(error)

ONAP_SDK_DISABLED=false; ONAP_TRACING_SOUTHBOUND=false; OTEL_INSTRUMENTATION_SPRING_WEBFLUX_ENABLED=true

(tick)(error)(tick)

ONAP_SDK_DISABLED=false; ONAP_TRACING_SOUTHBOUND=true; OTEL_INSTRUMENTATION_SPRING_WEBFLUX_ENABLED=false


Example

In a docker compose scenario:


Code Block
languageyml
themeMidnight
services:
  a1_policy_management:

        ....
    environment:
      - ONAP_SDK_DISABLED=false
      - ONAP_TRACING_SOUTHBOUND=true
      - OTEL_INSTRUMENTATION_SPRING_WEBFLUX_ENABLED=true



For more information visit the wiki page