Creating a single-node file server using Terraform

Written by

Yandex Cloud

Updated at October 30, 2024

Getting started
- Required paid resources
Create an infrastructure
Set up Samba and NFS
Test your file server
How to delete the resources you created

To create an infrastructure for a single-node file server using Terraform:

If you no longer need the resources you created, delete them.

Getting started

Go to the management console and log in to Yandex Cloud or create an account if you do not have one yet.
On the Yandex Cloud Billing page, make sure you have a billing account linked and it has the ACTIVE or TRIAL_ACTIVE status. If you do not have a billing account, create one.

If you have an active billing account, you can go to the cloud page to create or select a folder for your infrastructure to operate in.

Learn more about clouds and folders.

Required paid resources

The cost for hosting a single node file server includes:

Fee for a continuously running VM (see Yandex Compute Cloud pricing).
Fee for using a dynamic or static public IP address (see Yandex Virtual Private Cloud pricing).
Fee for the outbound traffic (see Yandex Virtual Private Cloud pricing).

Terraform allows you to quickly create a cloud infrastructure in Yandex Cloud and manage it using configuration files. Configuration files store the infrastructure description in the HashiCorp Configuration Language (HCL). Terraform and its providers are distributed under the Business Source License.

For more information about the provider resources, see the documentation on the Terraform website or the mirror.

If you change the configuration files, Terraform automatically detects which part of your configuration is already deployed, and what should be added or removed.

To create an infrastructure using Terraform:

Install Terraform, get the authentication credentials, and specify the source for installing the Yandex Cloud provider (see Configure a provider, step 1).

Prepare files with the infrastructure description:

Ready-made archive

Manually

Create a directory for files.
Download the archive (1 KB).
Unpack the archive to the directory. Now, it should contain the single-node-file-server.tf configuration file.

Create a directory for files.

Create a configuration file named single-node-file-server.tf in the folder:

single-node-file-server.tf

terraform {
  required_providers {
    yandex = {
      source  = "yandex-cloud/yandex"
      version = ">= 0.47.0"
    }
  }
}

provider "yandex" {
  zone = "ru-central1-a"
}

resource "yandex_vpc_network" "network-1" {
  name = "network1"
}

resource "yandex_vpc_subnet" "subnet-1" {
  name           = "subnet1"
  zone           = "ru-central1-a"
  network_id     = yandex_vpc_network.network-1.id
  v4_cidr_blocks = ["192.168.1.0/24"]
}

resource "yandex_vpc_security_group" "fileserver-tutorial-sg" {
  name       = "fileserver-tutorial-sg"
  network_id = yandex_vpc_network.network-1.id

  egress {
    protocol       = "ANY"
    description    = "any"
    v4_cidr_blocks = ["0.0.0.0/0"]
  }

  ingress {
    protocol       = "TCP"
    description    = "ext-http"
    v4_cidr_blocks = ["0.0.0.0/0"]
    port           = 80
  }

  ingress {
    protocol       = "TCP"
    description    = "ext-ssh"
    v4_cidr_blocks = ["0.0.0.0/0"]
    port           = 22
  }

  ingress {
    protocol       = "TCP"
    description    = "ext-https"
    v4_cidr_blocks = ["0.0.0.0/0"]
    port           = 443
  }

  ingress {
    protocol       = "TCP"
    description    = "ext-msql"
    v4_cidr_blocks = ["0.0.0.0/0"]
    port           = 3306
  }

  ingress {
    protocol       = "TCP"
    description    = "nfs"
    v4_cidr_blocks = ["0.0.0.0/0"]
    port           = 2049
  }
}

resource "yandex_compute_image" "ubuntu-1804-lts" {
  source_family = "ubuntu-1804-lts"
}

resource "yandex_compute_disk" "boot-disk-ubuntu" {
  name     = "fileserver-tutorial-disk"
  type     = "network-ssd"
  zone     = "ru-central1-a"
  size     = "100"
  image_id = yandex_compute_image.ubuntu-1804-lts.id
}

resource "yandex_compute_instance" "fileserver-tutorial" {
  name        = "fileserver-tutorial"
  platform_id = "standard-v3"
  zone        = "ru-central1-a"

  resources {
    core_fraction = 100
    cores         = 8
    memory        = 56
  }

  boot_disk {
    disk_id = yandex_compute_disk.boot-disk-ubuntu.id
  }

  network_interface {
    subnet_id          = yandex_vpc_subnet.subnet-1.id
    security_group_ids = [yandex_vpc_security_group.fileserver-tutorial-sg.id]
    nat                = true
  }

  metadata = {
    user-data = "#cloud-config\nusers:\n  - name: <username>\n    groups: sudo\n    shell: /bin/bash\n    sudo: 'ALL=(ALL) NOPASSWD:ALL'\n    ssh-authorized-keys:\n      - ${file("<path_to_public_SSH_key>")}"
  }
}

For more information about the parameters of resources used in Terraform, see the provider documentation:

Under metadata, enter your username and the contents of your SSH key. For more information, see VM metadata.
Create resources:
1. In the terminal, change to the folder where you edited the configuration file.
2. Make sure the configuration file is correct using the command:
```
terraform validate
```
  If the configuration is correct, the following message is returned:
```
Success! The configuration is valid.
```
3. Run the command:
```
terraform plan
```
  The terminal will display a list of resources with parameters. No changes are made at this step. If the configuration contains errors, Terraform will point them out.
4. Apply the configuration changes:
```
terraform apply
```
5. Confirm the changes: type yes in the terminal and press Enter.

After creating the infrastructure, configure Samba and NFS.

Set up Samba and NFS

After the fileserver-tutorial VM's status changes to RUNNING, do the following:

On the VM page of the management console, under Network, find the VM's public IP address.
Connect to the VM over SSH.

The recommended authentication method when connecting over SSH is using a key pair. Make sure to set up the created key pair so that the private key matches the public key sent to the VM.

Configure Samba and NFS:

Ubuntu

Download and install Samba:

sudo apt-get update
sudo apt-get install nfs-kernel-server samba

Prepare and mount the file system on the disk:
```
sudo mkfs -t ext4 -L data /dev/vdb
```

Prepare and mount the folder for data storage on the disk:

sudo mkdir /<folder_name>
echo "LABEL=data /<folder_name> ext4 defaults 0 0" | sudo tee -a /etc/fstab
sudo mount /<folder_name>

Set the NFS configuration in the /etc/exports file. You can edit the file using the nano utility:
```
sudo nano /etc/exports
```
Add the following lines to the file:
```
/<folder_name> <IP_address>(rw,no_subtree_check,fsid=100)
/<folder_name> 127.0.0.1(rw,no_subtree_check,fsid=100)
```
Where <IP_address> is the IP address of the computer you are going to connect the network data disk to via NFS.

Set the Samba configuration in the /etc/samba/smb.conf file. You can edit the file using the nano utility:

sudo nano /etc/samba/smb.conf

Edit the file as follows:

[global]
   workgroup = WORKGROUP
   server string = %h server (Samba)
   dns proxy = no
   log file = /var/log/samba/log.%m
   max log size = 1000
   syslog = 0
   panic action = /usr/share/samba/panic-action %d
   server role = standalone server
   passdb backend = tdbsam
   obey pam restrictions = yes
   unix password sync = yes
   passwd program = /usr/bin/passwd %u
   passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
   pam password change = yes
   map to guest = bad user
   usershare allow guests = yes
[printers]
   comment = All Printers
   browseable = no
   path = /var/spool/samba
   printable = yes
   guest ok = no
   read only = yes
   create mask = 0700
[print$]
   comment = Printer Drivers
   path = /var/lib/samba/printers
   browseable = yes
   read only = yes
   guest ok = no
[data]
   comment = /<folder_name>
   path = /<folder_name>
   browseable = yes
   read only = no
   writable = yes
   guest ok = yes
   hosts allow = <IP_address> 127.0.0.1
   hosts deny = 0.0.0.0/0

Where <IP_address> in the [data] section is the IP address of the computer you are going to connect the network data disk to via NFS.

Restart Samba and NFS:

sudo service nfs-kernel-server restart
sudo service smbd restart

Test your file server

Install ACL on the fileserver-tutorial VM:
Ubuntu
```
sudo apt install acl
```

On the fileserver-tutorial VM instance, create a directory named remote and the test.txt file:

Ubuntu

sudo mkdir /<folder_name>/remote
sudo setfacl -m u:<name_of_your_user>:rwx /<folder_name>/remote
echo "Hello world!" > /<folder_name>/remote/test.txt

Connect the network disk to your computer via NFS and check if the test file is available:
Linux/macOS

Windows
If needed, install the network disk utility:
```
sudo apt-get install nfs-common
```
Create a mount point:
```
sudo mkdir /remote-test-dir
```
Attach a network disk:
```
sudo mount -t nfs <VM_public_IP_address>:/<folder_name> /remote-test-dir
```
As as result, the test directory and the file should become available at the mount point.
1. Run the cmd.exe utility. To do this, use the Windows + R keyboard shortcut and run the cmd command.
2. From the command line, run:
  net use x: \\<VM_public_IP_address>\folder_name
This will create a disk X with the test directory and file.

How to delete the resources you created

To stop paying for the resources you created:

Open the single-node-file-server.tf configuration file and delete from it the description of the infrastructure you created.
Apply the changes:
1. In the terminal, change to the folder where you edited the configuration file.
2. Make sure the configuration file is correct using the command:
```
terraform validate
```
  If the configuration is correct, the following message is returned:
```
Success! The configuration is valid.
```
3. Run the command:
```
terraform plan
```
  The terminal will display a list of resources with parameters. No changes are made at this step. If the configuration contains errors, Terraform will point them out.
4. Apply the configuration changes:
```
terraform apply
```
5. Confirm the changes: type yes in the terminal and press Enter.

Creating a single-node file server using Terraform

Getting started

Required paid resources

Create an infrastructure

Set up Samba and NFS

Test your file server

How to delete the resources you created

See also

Was the article helpful?

Creating a single-node file server using Terraform

Getting startedGetting started

Required paid resourcesRequired paid resources

Create an infrastructureCreate an infrastructure

Set up Samba and NFSSet up Samba and NFS

Test your file serverTest your file server

How to delete the resources you createdHow to delete the resources you created

See alsoSee also

Was the article helpful?

Getting started

Required paid resources

Create an infrastructure

Set up Samba and NFS

Test your file server

How to delete the resources you created

See also