sample-cloudformation-ec2-instance

"Lab1": {
   "Type": "AWS::EC2::Instance",
   "Properties": {
      "KeyName": {
         "Ref": "KeyName"
      },
      "ImageId": "ami-337be65c",
      "InstanceType": "t2.small",
      "NetworkInterfaces": [{
         "DeviceIndex": "0",
         "AssociatePublicIpAddress": "true",
         "DeleteOnTermination": "true",
         "SubnetId": {
            "Ref": "WmUspSubnet"
         },
         "GroupSet": [{
            "Ref": "MySecurityGroup"
         }]
      }],
      "UserData": {
         "Fn::Base64": {
            "Fn::Join": ["", [
              "#!/bin/bash -v\n",
              "sudo adduser sag\n",
              "sudo mkdir -p /opt/softwareag\n",
              "sudo chown -R sag:sag /opt/softwareag\n",
              "sudo yum install wget -y\n"
            ]]
         }
      }
   }
}