Articles, notes and random thoughts on Software Development and Technology
Lambdas by default do not have write access to the instance filestorage where they are running. They do my default have 512MB of ephemeral storage mounted at /tmp – this space is include in the Lambda runtime costs by default and can be increased (with additional cost) in 1MB increments upto 10GB.
More info here: https://docs.aws.amazon.com/lambda/latest/dg/configuration-function-common.html#configuration-ephemeral-storage
While testing my Lambda using a Docker container, when the Lambda is invoked, I’m getting this runtime error:
Process 17(bootstrap) exited: Runtime exited with error: exit status 127
Process exit status code 127 errors are usually a file not found error. Going back through the Lambda logs, luckily there’s an error telling me I have an error in my shell script:
/var/task/test.sh: line 5: output: command not found
Quick and easy fix.
I’m getting this error when invoking myLambda which is using a Docker container:
Init failed error=fork/exec /var/runtime/bootstrap
To fix this, add a step to make the bootstrap file executable after you copy into the image:
COPY bootstrap ${LAMBDA_RUNTIME_DIR}
RUN chmod +x ${LAMBDA_RUNTIME_DIR}/bootstrap
I’m configuring an AWS Lambda with a custom runtime using the Serverless framework, and I’ve run into this error:
Architecture config by default on Lambda is showing x86_64::
If I trying to create with arm64 instead it gives:
An error occurred: HelloLambdaFunction - Resource handler returned message: "Runtime provided does not support the following architectures [arm64]. Please select different architectures from [x86_64] or select a different runtime
This is slightly obscure and it a result of the ‘provided’ runtime coming in 2 flavors, Amazon Linux 1 (provided) and Amazon Linux 2 (provided.al2), and only provided.al2 supports arm64.
If you change your serverless.yaml to include the provided.al2 runtime, then it deploys as expected.
This just means replacing this:
provider: name: aws runtime: provided
with:
provider: name: aws runtime: provided.al2
Note now how the runtime shows Amazon Linux 2 and arm64:
