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iam.tf
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iam.tf
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# IAM role ecsTaskExecutionRole for ECS task excecution
resource "aws_iam_role" "task_execution_role" {
name = "app-ecsTaskExecutionRole"
max_session_duration = "7200"
assume_role_policy = jsonencode({
"Version": "2012-10-17",
"Statement": [
{
"Action": "sts:AssumeRole",
"Principal": {
"Service": ["ecs.amazonaws.com", "ecs-tasks.amazonaws.com"]
},
"Effect": "Allow",
"Sid": ""
}
]
})
}
# Define and attach default policy AmazonECSTaskExecutionRolePolicy by AWS with ecsTaskExecutionRole
data "aws_iam_policy" "AmazonECSTaskExecutionRolePolicy" {
arn = "arn:aws:iam::aws:policy/service-role/AmazonECSTaskExecutionRolePolicy"
}
resource "aws_iam_role_policy_attachment" "task_execution_role_policy-ecs" {
role = aws_iam_role.task_execution_role.name
policy_arn = data.aws_iam_policy.AmazonECSTaskExecutionRolePolicy.arn
}
# Define and attach default policy AmazonSSMManagedInstanceCore by AWS with ecsTaskExecutionRole
data "aws_iam_policy" "AmazonSSMManagedInstanceCore" {
arn = "arn:aws:iam::aws:policy/AmazonSSMManagedInstanceCore"
}
resource "aws_iam_role_policy_attachment" "task_execution_role_policy-ssm-core" {
role = aws_iam_role.task_execution_role.name
policy_arn = data.aws_iam_policy.AmazonSSMManagedInstanceCore.arn
}
# Define and attach custom server-policy for our application
# KMS
# CloudWatch
# CloudWatch Logs
# SSM
resource "aws_iam_policy" "server_policy" {
name = "app-server-policy"
policy = jsonencode({
"Version": "2012-10-17",
"Statement": [
{
"Effect": "Allow",
"Action": [
"kms:*",
"logs:*",
"cloudwatch:*",
"ssmmessages:CreateControlChannel",
"ssmmessages:CreateDataChannel",
"ssmmessages:OpenControlChannel",
"ssmmessages:OpenDataChannel"
],
"Resource": "*"
}
]
})
}
resource "aws_iam_role_policy_attachment" "task_execution_role_policy-server-policy" {
role = aws_iam_role.task_execution_role.name
policy_arn = aws_iam_policy.server_policy.arn
}