/
ec2_iam.tf
65 lines (51 loc) · 1.47 KB
/
ec2_iam.tf
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data "aws_iam_policy_document" "vm_base_assume" {
statement {
sid = "AllowEC2Assume"
effect = "Allow"
actions = ["sts:AssumeRole"]
principals {
type = "Service"
identifiers = ["ec2.amazonaws.com"]
}
}
}
resource "aws_iam_role" "vm_base" {
name = "vm-base"
assume_role_policy = data.aws_iam_policy_document.vm_base_assume.json
}
data "aws_iam_policy" "ssm_managed_instance" {
arn = "arn:aws:iam::aws:policy/AmazonSSMManagedInstanceCore"
}
resource "aws_iam_role_policy_attachment" "vm_base_ssm" {
role = aws_iam_role.vm_base.name
policy_arn = data.aws_iam_policy.ssm_managed_instance.arn
}
resource "aws_iam_instance_profile" "vm_base" {
name = "vm-base"
role = aws_iam_role.vm_base.name
}
data "aws_iam_policy_document" "ssm_scripts" {
statement {
sid = "AllowS3"
effect = "Allow"
actions = ["s3:GetObject"]
resources = [
"${aws_s3_bucket.script_bucket.arn}/ssm_scripts/*",
]
}
statement {
sid = "AllowKMS"
effect = "Allow"
actions = ["kms:Decrypt"]
resources = [aws_kms_key.script_bucket_key.arn]
}
}
resource "aws_iam_policy" "ssm_scripts" {
name = "PullSSMScripts"
description = "Enables instances to download SSM scripts from S3"
policy = data.aws_iam_policy_document.ssm_scripts.json
}
resource "aws_iam_role_policy_attachment" "instance_download_scripts" {
role = aws_iam_role.vm_base.name
policy_arn = aws_iam_policy.ssm_scripts.arn
}