Unable to mount volume created by terraform - terraform

Question

I am using the following terraform template
resource "aws_instance" "ec2" {
ami = "${var.ami_id}"
instance_type = "${var.flavor}"
key_name = "${var.key_name}"
availability_zone = "${var.availability_zone}"
security_groups= ["${var.security_group}"]
tags = {Name = "${var.instance_name}"}
}
resource "aws_volume_attachment" "ebs_volume" {
device_name = "/dev/sdg"
volume_id = "vol-006d716dad719545c"
instance_id = "${aws_instance.ec2.id}"
}
to launch an instance in aws and attach volume to that instance.
When i execute this i see that the instance is created and volume is attached to the instance as well.
ubuntu#ip-172-31-10-43:~$ lsblk
NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT
loop0 7:0 0 91M 1 loop /snap/core/6350
loop1 7:1 0 18M 1 loop /snap/amazon-ssm-agent/930
loop2 7:2 0 88.4M 1 loop /snap/core/6964
loop3 7:3 0 18M 1 loop /snap/amazon-ssm-agent/1335
xvda 202:0 0 50G 0 disk
└─xvda1 202:1 0 50G 0 part /
xvdg 202:96 0 20G 0 disk
But when i try to mount the volume im getting this weird error
ubuntu#ip-172-31-10-43:~$ sudo mkdir -p /goutham
ubuntu#ip-172-31-10-43:~$ sudo mount /dev/xvdg /goutha,
mount: /goutha,: mount point does not exist.
ubuntu#ip-172-31-10-43:~$ sudo mount /dev/xvdg /goutham
mount: /goutham: wrong fs type, bad option, bad superblock on /dev/xvdg, missing codepage or helper program, or other error.
Can anyone please help me out as to what mistake i am doing in this exercise.
Thanks in advance.

Answer 1

You can make a file system on an attached disk using user data and terraform script.
https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/user-data.html
https://www.terraform.io/docs/providers/aws/r/instance.html#user_data
Create a sh file, templates/mkfs.sh
#!/bin/bash
while ! ls /dev/xvdg > /dev/null
do
sleep 5
done
if [ `file -s /dev/xvdg | cut -d ' ' -f 2` = 'data' ]
then
mkfs.xfs /dev/xvdg
fi
terraform script,
data "template_file" "mkfs" {
template = "${file("${path.module}/templates/mkfs.sh")}"
}
resource "aws_instance" "ec2" {
...
user_data = "${data.template_file.mkfs}"
...
}
It will be run when an ec2 instance is created and wait until disk is mounted. after that it will create file system.

Answer 2

I figured it i think i missed creating the file system in the volume as the volume im trying to attach is an empty volume
so this helped me out
$ sudo mkfs -t xfs /dev/xvdg
and
sudo mkdir -p /goutham
sudo mount /dev/xvdg /goutham
Thanks