Idea: Create Terraform provisioner

[Fodoj]

First of all, thanks for a great helper tools - really useful and simple.

Recently I integrated ssm-run into Terraform, basically replacing SSH-based bootstrapping with Session Manager. This allows also to bootstrap completely private instances, without public IP or any jump host.

I am passing instance ID and bootstrap script to the ssm-init script:

  provisioner "local-exec" {
    command = "${path.module}/bootstrap/ssm-init.sh ${self.id} ${var.bootstrap_script_path}"
  }

And the ssm-init.sh script (not - totally not perfect, just a first version, but it works):

#!/bin/bash

instance=$1
script=$2

while true :
do
  result=$(ssm-run -i $instance -file $script -log-level 1 | grep "1 SUCCESS")

  if [ $? == 0 ]; then
    echo "Instance provisioned!"
    break
  fi

  echo 'SSM Sessions are not available yet. Sleeping for 5 seconds.'
  sleep 5
done

As ssm-helpers are written in Go, it should be possible to integrate it as a provisioner in AWS provider for Terraform. Just an idea I thought I shall share here.