Use 100% of drive with custom image

Hello!

I'd like to start with this, as it might shed some light on all of it for you:

I've tried to find how to find out what a "distribution" is but couldn't find any details from the linode documentation.

A distribution is the "type" of Linux that you deploy onto your Linode - the operating system. There are many Linux distributions, and they include Ubuntu, Debian, CentOS and more. When creating a Linode, you'll need to choose one of them for deployment.

Typically, when we refer to something as a "custom image" we mean one that comes with its own distribution / operating system - one that isn't supported by our platform.

Would you be able to give us a little more information about the image you're trying to deploy? Does it include an operating system?

Here's some information from our docs about deploying a custom image:

Install a Custom Distribution on a Linode

Our StackScripts do make you choose a Linux distribution for deployment, and you would choose that under "Select an Image" - and the options it gives you are distributions that are supported by that particular StackScript.

How to Deploy a New Linode Using a StackScript

And Terraform:

Use Terraform to Provision Linode Environments

Finally, we also have a post here that discusses automatically resizing a disk using the Linode API:

How can I automatically resize my disk to the largest size using the Linode API?

I hope this gets you pointed in the right direction. Please feel free to give us more detail about what you're looking to do so we can provide further assistance. I've added some tags to this post to get it more visibility here in the Community.

It looks like you can declare a disk size in the Terraform config file using the "disk" and "size" flags. Below is a link to the documentation from Terraform on these flags.

https://registry.terraform.io/providers/linode/linode/latest/docs/resources/instance

Below is an example of a configuration for Terraform. Note that you'll want to replace the size directive with your desired disk size, the image directive with whatever image name you're using, and modify the other settings that are prepended by $.

terraform {
  required_providers {
    linode = {
      source = "linode/linode"
      version = "1.13.4"
    }
  }
}

provider "linode" {
    token = "$my_secret_api_token"
}

resource "linode_instance" "web" {
  label      = "my_terraform_created_linode"
  region     = "us-east"
  type       = "g6-nanode-1"

  disk {
    label = "boot"
    size = 24576
    image  = "private/1234567"

    root_pass = "$my_strong_password"
  }

  config {
    label = "boot_config"
    kernel = "linode/grub2"
    helpers {
        network = "true"
    }
    devices {
      sda {
        disk_label = "boot"
      }
    }
    root_device = "/dev/sda"
  }

  boot_config_label = "boot_config"
}