CODEWITHSUNDEEP
amazon-web-servicesaws-lambdaterraform
Nitish Nimma
Nitish Nimma

Reputation: 21

Running terraform init and plan commands on AWS lambda

I am trying to run the two commands shown below on AWS lambda using python 3.7:

run_command("terraform init -reconfigure -upgrade")
run_command("terraform plan -out=plan.tfstate")

Below is the run_command function:

def run_command(command):
    command_list = command.split(' ')

    try:
        logger.info("Running shell command: \"{}\"".format(command))
        result = subprocess.run(command_list, stdout=subprocess.PIPE);
        logger.info("Command output:\n---\n{}\n---".format(result.stdout.decode('UTF-8')))
    except Exception as e:
        logger.error("Exception: {}".format(e))
        return False

    return True

I installed the terraform zip as an AWS layer but when I try to run the terraform init/plan commands shown above I get the errors below.

[INFO]  2021-08-11T22:58:59.435Z    515d3670-be7c-46e1-8098-920ec9c63891    Running shell command: "terraform init -reconfigure -upgrade"
[ERROR] 2021-08-11T22:58:59.475Z    515d3670-be7c-46e1-8098-920ec9c63891    Exception: [Errno 2] No such file or directory: 'terraform': 'terraform'
[INFO]  2021-08-11T22:58:59.476Z    515d3670-be7c-46e1-8098-920ec9c63891    Running shell command: "terraform plan -out=plan.tfstate"
[ERROR] 2021-08-11T22:58:59.496Z    515d3670-be7c-46e1-8098-920ec9c63891    Exception: [Errno 2] No such file or directory: 'terraform': 'terraform'

I know that I am in the correct directory with a main.tf file when running the terraform command so that isn't the issue. Thus, why am I getting these errors?

I am not sure why I am getting these errors because I used the same process to run AWS CLI commands on lambda, and it is working correctly.

Upvotes: 1

Views: 880

Answers (1)

Daniel Seichter
Daniel Seichter

Reputation: 919

Where did you create the layer? If on a linux machine, please be sure, to set chmod 755 before zipping the terraform binaries. If on windows, see alternative:

If this is not working, here is an alternative:

Run a chmod 755 within your Lambda to the binary before run the terraform cli.

Be sure, you downloaded the Linux version of terraform. I did the same with terraform cli and also with mysqldump binary, so this procedure should work (but not within a layer, maybe you have to pack it into your main source.

Side note: Use Python 3.8 for your lambda

Upvotes: 1

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