I want to use the AWS RDS command line tool to create a snapshot of my database my-database
using create-db-snapshot
.
I have created a special backup role in IAM with a policy that allows me to describe, copy and create snapshots. It looks like this (I've replaced sensitive id's with an x):
{
"Version": "2012-10-17",
"Statement": [
{
"Sid": "Stmtxxxxxxxxxxxxxx",
"Effect": "Allow",
"Action": [
"rds:CopyDBSnapshot",
"rds:CreateDBSnapshot",
"rds:DescribeDBSnapshots",
"rds:DescribeEventCategories",
"rds:DescribeEvents"
],
"Resource": [
"arn:aws:rds:eu-west-1:xxxxxxxxxxxxxx:db:my-database"
]
}
]
}
After configuring the CLI tools with aws configure
and entering the keys for this user I tried to make a snapshot by executing this command:
aws rds create-db-snapshot \
--db-snapshot-identifier "my-database-backup-$(date +%d-%m-%Y-%Hh%Mm)" \
--db-instance-identifier "my-database"
This results in an error message saying:
A client error (AccessDenied) occurred when calling the CreateDBSnapshot operation: User: arn:aws:iam::xxxxxxxxxxxxxx:user/automated-tasks is not authorized to perform: rds:CreateDBSnapshot on resource: arn:aws:rds:eu-west-1:xxxxxxxxxxxxxx:snapshot:my-database-backup-24-11-2014-11h07m
I thought this was weird, as it says access is denied to the resource with the name I've specified for the --db-snapshot-identifier
argument, as apposed to the --db-instance-identifier
argument.
If I have sufficient permissions to create a snapshot applied to an instance in the first place, shouldn't the I inherently have create-permissions for that snapshot?
Anyway, I tried changing the resource in the policy to everything within RDS:
"Resource": [
"arn:aws:rds:eu-west-1:xxxxxxxxxxxxxx:*"
]
I'd hoped this would work because now my role has create-snapshot permissions for everything within the RDS ARN of my account, but it didn't.
Does anyone have a clue as to why my command returns an error?