terraform/packer_roles/main.tf

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# to you under the Apache License, Version 2.0 (the
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#
#   http://www.apache.org/licenses/LICENSE-2.0
#
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terraform {
  required_providers {
    aws = {
      source  = "hashicorp/aws"
      version = "~> 3.0"
    }
  }
  backend "s3" {
    bucket = "airflow-ci-tfstate"
    key    = "tf-state/packer-roles"
    region = "us-east-2"
  }
}

# Configure the AWS Provider
provider "aws" {
  region = "us-east-2"
}

### PACKER NEED IAM ROLE ###
resource "aws_iam_role_policy" "packer_policy" {
  name = "packer-base-policy"
  role = aws_iam_role.packer_role.id

  policy = <<-EOF
  {
    "Version": "2012-10-17",
    "Statement": [
      {
            "Sid": "04092021",
            "Effect": "Allow",
            "Action": [
                "ec2:AttachVolume",
                "ec2:AuthorizeSecurityGroupIngress",
                "ec2:CopyImage",
                "ec2:CreateImage",
                "ec2:CreateKeypair",
                "ec2:CreateSecurityGroup",
                "ec2:CreateSnapshot",
                "ec2:CreateTags",
                "ec2:CreateVolume",
                "ec2:DeleteKeyPair",
                "ec2:DeleteSecurityGroup",
                "ec2:DeleteSnapshot",
                "ec2:DeleteVolume",
                "ec2:DeregisterImage",
                "ec2:DescribeImageAttribute",
                "ec2:DescribeImages",
                "ec2:DescribeInstances",
                "ec2:DescribeInstanceStatus",
                "ec2:DescribeRegions",
                "ec2:DescribeSecurityGroups",
                "ec2:DescribeSnapshots",
                "ec2:DescribeSubnets",
                "ec2:DescribeTags",
                "ec2:DescribeVolumes",
                "ec2:DetachVolume",
                "ec2:GetPasswordData",
                "ec2:ModifyImageAttribute",
                "ec2:ModifyInstanceAttribute",
                "ec2:ModifySnapshotAttribute",
                "ec2:RegisterImage",
                "ec2:RunInstances",
                "ec2:StopInstances",
                "ec2:TerminateInstances"
            ],
            "Resource": "*"
        }
    ]
  }
  EOF
}

resource "aws_iam_role" "packer_role" {
  name = "packer-role"

  assume_role_policy = <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Action": "sts:AssumeRole",
      "Principal": {
        "Service": "ec2.amazonaws.com"
      },
      "Effect": "Allow",
      "Sid": ""
    }
  ]
}
EOF

  tags = {
    tag-key = "tag-value"
  }
}

### SSM ###

resource "aws_iam_role" "packer_ssm_role" {
  name = "packer-ssm-role"

  assume_role_policy = <<EOF
{
  "Version": "2012-10-17",
  "Statement": [
    {
      "Action": "sts:AssumeRole",
      "Principal": {
        "Service": "ec2.amazonaws.com"
      },
      "Effect": "Allow",
      "Sid": ""
    }
  ]
}
EOF

  tags = {
    tag-key = "tag-value"
  }
}

resource "aws_iam_role_policy" "packer_ssm_policy" {
  name = "packer-ssm-policy"
  role = aws_iam_role.packer_ssm_role.id

  policy = <<-EOF
  {
    "Version": "2012-10-17",
    "Statement": [
      {
        "Sid": "04092021",
        "Effect": "Allow",
        "Action": [
          "ssm:StartSession"
        ],

        "Resource": "arn:aws:ec2:*:*:instance/*"
      }
    ]
  }
  EOF
}

resource "aws_iam_role_policy_attachment" "attach_packer_ssm_policy" {
  role       = aws_iam_role.packer_ssm_role.name
  policy_arn = "arn:aws:iam::aws:policy/AmazonSSMManagedInstanceCore"
}

resource "aws_iam_instance_profile" "packer_ssm_profile" {
  name = "packer_ssm_instance_profile"
  role = aws_iam_role.packer_ssm_role.name
}