Unable to invoke lambda function from localstack via aws cli - amazon-web-services

Question

I have the lambda function pushed as I can see it in localstack, based on below command/output
aws lambda get-function --function-name books1 --endpoint-url=http://localhost:4574
{
"Code": {
"Location": "http://localhost:4574/2015-03-31/functions/books1/code"
},
"Configuration": {
"Version": "$LATEST",
"FunctionName": "books1",
"CodeSize": 50,
"FunctionArn": "arn:aws:lambda:us-east-1:000000000000:function:books1",
"Environment": {},
"Handler": "main",
"Runtime": "go1.x"
}
}
When I try to execute it, as shown below, I get an error, and my localstack is running inside a docker container
aws --endpoint-url=http://localhost:4574 lambda invoke --function-name books1 /tmp/output.json
An error occurred (InternalFailure) when calling the Invoke operation (reached max retries: 4): Error executing Lambda function: Unable to find executor for Lambda function "books1". Note that Node.js and .NET Core Lambdas currently require LAMBDA_EXECUTOR=docker Traceback (most recent call last):
File "/opt/code/localstack/localstack/services/awslambda/lambda_api.py", line 269, in run_lambda
event, context=context, version=version, asynchronous=asynchronous)
File "/opt/code/localstack/localstack/services/awslambda/lambda_executors.py", line 466, in execute
process.run()
File "/usr/lib/python2.7/multiprocessing/process.py", line 114, in run
self._target(*self._args, **self._kwargs)
File "/opt/code/localstack/localstack/services/awslambda/lambda_executors.py", line 462, in do_execute
result = lambda_function(event, context)
File "/opt/code/localstack/localstack/services/awslambda/lambda_api.py", line 390, in generic_handler
'Note that Node.js and .NET Core Lambdas currently require LAMBDA_EXECUTOR=docker') % lambda_name)
Exception: Unable to find executor for Lambda function "books1". Note that Node.js and .NET Core Lambdas currently require LAMBDA_EXECUTOR=docker
This lambda is written in Go and when I manually execute it on real AWS, it works just fine.

Answer 1

You should run localstack container with passed LAMBDA_EXECUTOR=docker environment and /var/run/docker.sock:/var/run/docker.sock volume
docker run \
-itd \
-v /var/run/docker.sock:/var/run/docker.sock \
-e LAMBDA_EXECUTOR=docker \
-p 4567-4583:4567-4583 -p 8080:8080 \
--name localstack \
localstack/localstack