[Problem] Logging integration with opentelemetry auto instrumentation

[g3david405]

Is your feature request related to a problem?

I use python auto instrumentation for my FastAPI application.

I want to do zero code insert for opentelemetry like this docs

The log and trace were perfectly send to opentelemetry collector by following instrumentation in kubernetes:

apiVersion: opentelemetry.io/v1alpha1
kind: Instrumentation
metadata:
  name: opentelemetry-instrumentation
  namespace: opentelemetry-operator-system
spec:
  defaults: {}
  exporter:
    endpoint: http://opentelemetry-collector.open-telemetry.svc.cluster.local:4318
  propagators:
    - tracecontext
    - baggage
  python:
    env:
      - name: OTEL_PYTHON_LOGGING_AUTO_INSTRUMENTATION_ENABLED
        value: 'true'      
    image: >-
      ghcr.io/open-telemetry/opentelemetry-operator/autoinstrumentation-python:0.50b0
    resourceRequirements:
      limits:
        cpu: 500m
        memory: 64Mi
      requests:
        cpu: 50m
        memory: 64Mi
    volumeClaimTemplate:
      metadata: {}
      spec:
        resources: {}
  resource: {}
  sampler:
    argument: '1'
    type: parentbased_traceidratio

If I specified OTEL_PYTHON_LOGGING_AUTO_INSTRUMENTATION_ENABLED to true, the log which use logging will be send to opentelemetry collector, but disappear in console.

How can I send the log to opentelemetry and print in console by logging using python auto instrumentation?

If possible, I want to maintain the concept of zero code. I don't want to change the application code.

thanks

Describe the solution you'd like

I can use variable or something that I can send logging log to console and opentelemetry collector

Describe alternatives you've considered

No response

Additional Context

No response

Would you like to implement a fix?

None

[g3david405]

OK I fond the solution,
Just specified env like following

    env:
      - name: OTEL_PYTHON_LOGGING_AUTO_INSTRUMENTATION_ENABLED
        value: 'true'      
      - name: OTEL_LOGS_EXPORTER
        value: 'console,otlp'

But the log format is not same as before, how can I remain the original log format in console?

[pmcollins]

If your code calls logging.basicConfig() then that will be a no-op because auto-instrumentation will already have set it up.

You can add a stream handler explicitly like this, then logging should show up on the console as well:

stream_handler = logging.StreamHandler()
stream_handler.setFormatter(logging.Formatter(logging.BASIC_FORMAT, None, "%"))
logging.getLogger().addHandler(stream_handler)

We might want to add a capability like this to this distro. Will bring it up in the SIG.

[g3david405]

@pmcollins
Thanks man, It works!