How to set user name and group name in IAM using CloudFormation?

Question

I created a CloudFormation template and I wanted to create IAM user, to do that I used this JSON string:

"CFNUser" : {
  "Type" : "AWS::IAM::User",
  "Properties" : {
    "LoginProfile": {
      "Password": { "Ref" : "AdminPassword" }
    }
  }
},

Then for group I used this:

"CFNUserGroup" : {
  "Type" : "AWS::IAM::Group"
},

After creating the stack, I got the following:

user name - IAMUsers-CFNUser-E1BT342YK7G6

group name - IAMUsers-CFNUserGroup-1UBUBRYALTIMI

So my question is, how can I set the user name here? same goes for the group name?

Answer 1

After talking with one of the AWS support, at this time of writing, it is not possible to specify your own username and group name in IAM using CloudFormation template :-(

Maybe there's a reason why they do not allow user to do this...anyway it's good thing that I have answer to this question and I will be glad if someone find this useful.