iam.tf
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## Define a policy to RO
resource "aws_iam_policy" "ec2-ro-policy" {
name = "ec2-ro-policy"
path = "/"
description = "Autocreated Policy to read tags from ec2 instance"
policy = <<EOF
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "Stmt1506366968000",
"Effect": "Allow",
"Action": [
"ec2:DescribeInstances",
"ec2:DescribeTags"
],
"Resource": [
"*"
]
}
]
}
EOF
}
## STS AssumeRole Data
data "aws_iam_policy_document" "instance-assume-role-policy" {
statement {
actions = ["sts:AssumeRole"]
principals {
type = "Service"
identifiers = ["ec2.amazonaws.com"]
}
}
}
## Add EC2 instance role
resource "aws_iam_role" "ec2-instance-role" {
name = "ec2-instance-role"
path = "/"
assume_role_policy = "${data.aws_iam_policy_document.instance-assume-role-policy.json}"
}
## Attach policy to role
resource "aws_iam_policy_attachment" "ec2-policy-attachemnt" {
name = "ec2-policy-attachemnt"
roles = ["${aws_iam_role.ec2-instance-role.name}"]
policy_arn = "${aws_iam_policy.ec2-ro-policy.arn}"
}
## Create instance profile and attah the role
resource "aws_iam_instance_profile" "ec2-instance-profile" {
name = "ec2-instance-profile"
role = "${aws_iam_role.ec2-instance-role.name}"
}