aws / terraform Iam - inline - amazon-web-services

Question

so here what I'm trying to do: is to create inline policies and attach it to an existing user?
aws_iam_user does create but instead, I would want to attach it to an existing user.
thanks
resource "aws_iam_user" "user" {
name = "arthur"
}
#Create Inline Policies for de-test
resource "aws_iam_user_policy" "arthur" {
name = "arthur inline"
user = aws_iam_user.user.name
policy = <<EOF
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "s3inline",
"Effect": "Allow",
"Action": [
"s3:GetAccountPublicAccessBlock",
"s3:ListAllMyBuckets",
"s3:ListAccessPoints",
"s3:GetBucketLocation"
],
"Resource": "*"
},
{
"Sid": "s3inline",
"Effect": "Allow",
"Action": [
"s3:GetBucketPublicAccessBlock",
"s3:GetBucketPolicyStatus",
"s3:ListBucket",
"s3:GetBucketAcl"
],
"Resource": "arn:aws:s3:::arthur-store"
}
]
}
EOF
}

Answer 1

Change this:
resource "aws_iam_user" "user" {
name = "arthur"
}
To this:
data "aws_iam_user" "user" {
user_name = "arthur"
}
Or, since you only need the name, there isn't much use to looking up the user at all, so you could just do this in the aws_iam_user_policy:
resource "aws_iam_user_policy" "arthur" {
name = "arthur inline"
user = "arthur"
...