Python app logs not getting exported to elastic backend

[MadhusudanN]

Background ::
I have a python app which uses Flask server and have added GET Api which returns a string as response.
I wanted to check auto-instrumentation of logs feature as described in this link :: https://opentelemetry.io/docs/instrumentation/python/automatic/logs-example/

Problem ::
Logs are not getting exported to elastic backend. Python logging library is used as described in the above link

Excerpt of code below ::

from opentelemetry import trace
from opentelemetry.sdk.trace import TracerProvider

from flask import Flask
import logging

provider = TracerProvider()
trace.set_tracer_provider(provider)
tracer = trace.get_tracer(name)

app = Flask(name)

@app.route("/server_request")
def server_request():
print(request.args.get("param"))
logging.getLogger().info("Calling methodA()")
methodA()
return "served"

def methodA():
with tracer.start_as_current_span("methodA"):
span = trace.get_current_span()
print("Inside MethodA")
print("Calling MethodB")
logging.getLogger().info("Calling methodB()")
methodB()

def methodB():
with tracer.start_as_current_span("methodB"):
span = trace.get_current_span()
print("Inside MethodB")
print("Calling MethodC")
logging.getLogger().info("Calling methodC()")
methodC()

def methodC():
with tracer.start_as_current_span("methodC"):
span = trace.get_current_span()
print("Inside MethodC")
print("Calling MethodD")
logging.getLogger().info("Calling methodD()")
methodD()

def methodD():
with tracer.start_as_current_span("methodD"):
span = trace.get_current_span()
print("Inside MethodD")
print("Calling MethodE")
logging.getLogger().info("Calling methodE()")
methodE()

def methodE():
print("Inside MethodE")
print("Calling MethodF")
logging.getLogger().info("Calling methodF()")
methodF()

def methodF():
print("Inside MethodF")
print("Returning from MethodF")
logging.getLogger().info("Returning from MethodF")

if name == 'main':
app.run()

The below environment variables are set ::

OTEL_LOGS_EXPORTER = otlp
OTEL_PYTHON_LOG_LEVEL = info
OTEL_PYTHON_LOGGING_AUTO_INSTRUMENTATION_ENABLED = true
OTEL_EXPORTER_OTLP_ENDPOINT is set to APM server and OTEL_EXPORTER_OTLP_HEADERS is set to proper values

I am able to see traces in the elastic backend. Please find the screenshot below.

The app is launched with the below command ::

opentelemetry-instrument --traces_exporter console,otlp --metrics_exporter console,otlp --service_name test-logging python app.py

Host OS and Python details ::
Windows 11
Python :: 3.9.6
opentelemetry-instrument :: 0.40b0

Do not see any errors in the logs. PFA the logs file here.
logs.txt

Can someone please look into this and guide.

[lzchen]

Perhaps related: #3473

Could you try removing the env var and try using logger.WARNING instead to see if that works?