Error _LAMBDA_LOG_FD in AWS lambda function with nodejs 4.3

Question

i have an error with AWS lambda function with nodejs 4.3,

[ERROR] (get_int_from_env@src/lambda/runtime.c:493 errno: None) temp_str = getenv(env_name) failed.
[ERROR] (get_int_from_env@src/lambda/runtime.c:493 errno: None) temp_str = getenv(env_name) failed.
[ERROR] (runtime_init@src/lambda/runtime.c:532 errno: None) ((fd =get_int_from_env("_LAMBDA_LOG_FD", 1))) >= 0 failed. invalid file descriptor -1 
[ERROR] (runtime_init@src/lambda/runtime.c:560 errno: None) Runtime internal error

I think _LAMBDA_LOG_FD is environment variable set internally that indicates the file descriptor for logging. I did not found anything in the documetation here!

For information, my lambda function uses cluster with fork process.

Someone can give a clue to resolve this issue ? Do you need more informations? and if yes , which one?

Thanks a lot

I am getting same issue in zappa python. Did you find any solution?? — Abdul Majeed
– Abdul Majeed, Commented Mar 16, 2017 at 11:18

Abdul Majeed · Accepted Answer · 2017-03-16 15:15:37Z

2

I was getting this issue in python flask.

I have resolved it by changing main function.

Previously main function was defined as

app = Flask(__name__)
app.run()

I have replaced it with

if __name__=='__main__':
    app.run()

one more thing parameter_depth variable added in "zappa_settings.json" file.

{
    "dev": {
        "app_function": "run.app", 
        "s3_bucket": "Your_bucket_name",
        "parameter_depth":1
    }
}

answered Mar 16, 2017 at 15:15

Abdul Majeed

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