Auto-update blog content from Obsidian: 2025-05-27 21:26:43

content/post/terraform-create-vm-proxmox.md

@@ -54,23 +54,18 @@ For the Terraform installation, I followed the [documentation](https://developer
 apt-get update && apt-get install -y gnupg software-properties-common
 
 # Install the HashiCorp [GPG key](https://apt.releases.hashicorp.com/gpg).
-
 wget -O- <https://apt.releases.hashicorp.com/gpg> | gpg --dearmor | tee /usr/share/keyrings/hashicorp-archive-keyring.gpg > /dev/null
 
 # Verify the key's fingerprint.
-
 gpg --no-default-keyring --keyring /usr/share/keyrings/hashicorp-archive-keyring.gpg --fingerprint
 
 # Add the official HashiCorp repository to your system. The `lsb_release -cs` command finds the distribution release codename for your current system, such as `buster`, `groovy`, or `sid`.
-
 echo "deb [signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] <https://apt.releases.hashicorp.com> $(lsb_release -cs) main" | tee /etc/apt/sources.list.d/hashicorp.list
 
 # Download the package information from HashiCorp.
-
 apt update
 
 # Install Terraform from the new repository.
-
 apt-get install terraform
 ```
 
@@ -124,28 +119,562 @@ pveum user token add terraformer@pve terraform -expire 0 -privsep 0 -comment "Te
 
 ⚠️ Copy and save the token given!
 
-### Install SSH Keys on Proxmox Nodes
+### Install SSH Keys on your Proxmox Nodes
 
+This step is required, if you are using some specific resources, to execute commands on the node to perform actions that are not supported by Proxmox API, detailed [here](https://registry.terraform.io/providers/bpg/proxmox/latest/docs#ssh-connection), this would be the case for our setup with cloud-init.
 
+We could either use a SSH-agent or a SSH key, I preferred the latter, so we have to generate a ssh-key and install it on your Proxmox nodes. You generate these keys from where Terraform is installed.
+
+1. **Generate the SSH key pair**
+```bash
+ssh-keygen
+```
+
+2. **Install it on your Proxmox node(s) for the root user**
+```bash
+ssh-copy-id root@<your Proxmox node>
+```
 
 ---
 ## Deploy your First VM
-Show the code I used and explain each blocks
 
-Add a link to the folder structure on Homelab repo on Github
+Let's now dive into the fun part! Now we have our environment ready to deploy VM using Terraform on Proxmox, let's code!
+### Terraform Code
 
+📌 Reminder, you can find all the code I have written in my [Homelab repo](https://git.vezpi.me/Vezpi/Homelab/), the following code is located [here](https://git.vezpi.me/Vezpi/Homelab/src/commit/22f64034175a6a4642a2c7b6656688f16ece5ba1/terraform/projects/simple-vm). Don't forget to match your variables with your environment!
+#### Code Structure
+
+Here is the code structure, you can keep all your code in a single `.tf` file but I prefer to keep it clean.
 ```plaintext
-terra/
-├── config.toml
-├── content/
-│   └── posts/
-│       └── hello-world.md
-└── themes/
-    └── PaperMod/
+simple-vm
+|-- credentials.auto.tfvars
+|-- main.tf
+|-- provider.tf
+|-- terraform.tfvars
+`-- variables.tf
 ```
 
+#### `provider.tf`
+```hcl
+# Define the required Terraform provider block
+terraform {
+  required_providers {
+    proxmox = {
+      source = "bpg/proxmox" # Use the community Proxmox provider from the bpg namespace
+    }
+  }
+}
+
+# Configure the Proxmox provider with API and SSH access
+provider "proxmox" {
+  endpoint  = var.proxmox_endpoint  # Proxmox API URL (e.g., https://proxmox.local:8006/api2/json)
+  api_token = var.proxmox_api_token # API token for authentication (should have appropriate permissions)
+  insecure  = false                 # Reject self-signed or invalid TLS certificates (set to true only in trusted/test environments)
+
+  # Optional SSH settings used for VM customization via SSH
+  ssh {
+    agent       = false                        # Do not use the local SSH agent; use key file instead
+    private_key = file("~/.ssh/id_ed25519")    # Load SSH private key from the local file system
+    username    = "root"                       # SSH username for connecting to the Proxmox host
+  }
+}
+```
+
+#### `main.tf`
+```tf
+data "proxmox_virtual_environment_vms" "template" {
+  filter {
+    name   = "name"
+    values = ["${var.vm_template}"]
+  }
+}
+
+resource "proxmox_virtual_environment_file" "cloud_config" {
+  content_type = "snippets"
+  datastore_id = "local"
+  node_name    = var.node_name
+  source_raw {
+    file_name = "vm.cloud-config.yaml"
+    data      = <<-EOF
+    #cloud-config
+    hostname: ${var.vm_name}
+    package_update: true
+    package_upgrade: true
+    packages:
+      - qemu-guest-agent
+    users:
+      - default
+      - name: ${var.vm_user}
+        groups: sudo
+        shell: /bin/bash
+        ssh-authorized-keys:
+          - "${var.vm_user_sshkey}"
+        sudo: ALL=(ALL) NOPASSWD:ALL
+    runcmd:
+      - systemctl enable qemu-guest-agent 
+      - reboot
+    EOF
+  }
+}
+
+resource "proxmox_virtual_environment_vm" "vm" {
+  name      = var.vm_name
+  node_name = var.node_name
+  tags      = var.vm_tags
+  agent {
+    enabled = true
+  }
+  stop_on_destroy = true
+  clone {
+    vm_id     = data.proxmox_virtual_environment_vms.template.vms[0].vm_id
+    node_name = data.proxmox_virtual_environment_vms.template.vms[0].node_name
+  }
+  bios    = var.vm_bios
+  machine = var.vm_machine
+  cpu {
+    cores = var.vm_cpu
+    type  = "host"
+  }
+  memory {
+    dedicated = var.vm_ram
+  }
+  disk {
+    datastore_id = var.node_datastore
+    interface    = "scsi0"
+    size         = 4
+  }
+  initialization {
+    user_data_file_id = proxmox_virtual_environment_file.cloud_config.id
+    datastore_id      = var.node_datastore
+    interface         = "scsi1"
+    ip_config {
+      ipv4 {
+        address = "dhcp"
+      }
+    }
+  }
+  network_device {
+    bridge  = "vmbr0"
+    vlan_id = var.vm_vlan
+  }
+  operating_system {
+    type = "l26"
+  }
+  vga {
+    type = "std"
+  }
+}
+
+output "vm_ip" {
+  value       = proxmox_virtual_environment_vm.vm.ipv4_addresses[1][0]
+  description = "VM IP"
+}
+```
+
+#### `variables.tf`
+```
+variable "proxmox_endpoint" {
+  description = "Proxmox URL endpoint"
+  type        = string
+}
+
+variable "proxmox_api_token" {
+  description = "Proxmox API token"
+  type        = string
+  sensitive   = true
+}
+
+variable "node_name" {
+  description = "Proxmox host for the VM"
+  type        = string
+}
+
+variable "node_datastore" {
+  description = "Datastore used for VM storage"
+  type        = string
+  default     = "ceph-workload"
+}
+
+variable "vm_template" {
+  description = "Template of the VM"
+  type        = string
+  default     = "ubuntu-cloud"
+}
+
+variable "vm_name" {
+  description = "Hostname of the VM"
+  type        = string
+}
+
+variable "vm_user" {
+  description = "Admin user of the VM"
+  type        = string
+  default     = "vez"
+}
+
+variable "vm_user_sshkey" {
+  description = "Admin user SSH key of the VM"
+  type        = string
+  default     = "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAID62LmYRu1rDUha3timAIcA39LtcIOny1iAgFLnxoBxm vez@bastion"
+}
+
+variable "vm_cpu" {
+  description = "Number of CPU cores of the VM"
+  type        = number
+  default     = 1
+}
+
+variable "vm_ram" {
+  description = "Number of RAM (MB) of the VM"
+  type        = number
+  default     = 2048
+}
+
+variable "vm_bios" {
+  description = "Type of BIOS used for the VM"
+  type        = string
+  default     = "ovmf"
+}
+
+variable "vm_machine" {
+  description = "Type of machine used for the VM"
+  type        = string
+  default     = "q35"
+}
+
+variable "vm_vlan" {
+  description = "VLAN of the VM"
+  type        = number
+  default     = 66
+}
+
+variable "vm_tags" {
+  description = "Tags for the VM"
+  type        = list(any)
+  default     = ["test"]
+}
+```
+#### `terraform.tfvars`
+```
+node_name = "zenith"     # Name of the Proxmox node where the VM will be deployed
+vm_name   = "zenith-vm"  # Desired name for the new virtual machine
+vm_cpu    = 2            # Number of CPU cores to allocate to the VM
+vm_ram    = 2048         # Amount of RAM in MB (2 GB)
+vm_vlan   = 66           # VLAN ID for network segmentation
+```
+
+The last file is not in the repository so you will have to create it manually, it contains sensitive datas.
+#### `credentials.auto.tfvars`
+```
+proxmox_endpoint  = <your Proxox endpoint>
+proxmox_api_token = <your Proxmox API token for the user terraformer>
+```
+
+To improve readability, you can automatically formats your Terraform code `terraform fmt`, to follow standard style conventions, making it clean and consistent.
+
+### Initialize your Workspace
+
+The first step when working with Terraform is to initialize your workspace. You will do that with the `terraform init` command, which will:
+- Initializes the working directory
+- Downloads required providers
+- Installs modules
+- Sets up the backend
+
+```bash
+$ terraform init
+Initializing the backend...
+Initializing provider plugins...
+- Finding latest version of bpg/proxmox...
+- Installing bpg/proxmox v0.78.0...
+- Installed bpg/proxmox v0.78.0 (self-signed, key ID F0582AD6AE97C188)
+Partner and community providers are signed by their developers.
+If you'd like to know more about provider signing, you can read about it here:
+https://www.terraform.io/docs/cli/plugins/signing.html
+Terraform has created a lock file .terraform.lock.hcl to record the provider
+selections it made above. Include this file in your version control repository
+so that Terraform can guarantee to make the same selections by default when
+you run "terraform init" in the future.
+
+Terraform has been successfully initialized!
+
+You may now begin working with Terraform. Try running "terraform plan" to see
+any changes that are required for your infrastructure. All Terraform commands
+should now work.
+
+If you ever set or change modules or backend configuration for Terraform,
+rerun this command to reinitialize your working directory. If you forget, other
+commands will detect it and remind you to do so if necessary.
+```
+
+### Deploy your Terraform Infrastructure
+
+Great, we now have our environment ready for deployment! Before creating your VM, you can run `terraform plan` against your code and Terraform will tell you what it will do with it!
+
+To actually launch it, you will need to launch `terraform apply`
+
+```bash
+$ terraform apply
+data.proxmox_virtual_environment_vms.template: Reading...
+data.proxmox_virtual_environment_vms.template: Read complete after 0s [id=d3292ffb-f11d-4588-9e97-fabc0f93cc39]
+
+Terraform used the selected providers to generate the following execution plan. Resource actions are indicated with the following symbols:
+  + create
+
+Terraform will perform the following actions:
+
+  # proxmox_virtual_environment_file.cloud_config will be created
+  + resource "proxmox_virtual_environment_file" "cloud_config" {
+      + content_type           = "snippets"
+      + datastore_id           = "local"
+      + file_modification_date = (known after apply)
+      + file_name              = (known after apply)
+      + file_size              = (known after apply)
+      + file_tag               = (known after apply)
+      + id                     = (known after apply)
+      + node_name              = "zenith"
+      + overwrite              = true
+      + timeout_upload         = 1800
+
+      + source_raw {
+          + data      = <<-EOT
+                #cloud-config
+                hostname: zenith-vm
+                package_update: true
+                package_upgrade: true
+                packages:
+                  - qemu-guest-agent           # Ensures the guest agent is installed
+                users:
+                  - default
+                  - name: vez
+                    groups: sudo
+                    shell: /bin/bash
+                    ssh-authorized-keys:
+                      - "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAID62LmYRu1rDUha3timAIcA39LtcIOny1iAgFLnxoBxm vez@bastion" # Inject user's SSH key
+                    sudo: ALL=(ALL) NOPASSWD:ALL
+                runcmd:
+                  - systemctl enable qemu-guest-agent
+                  - reboot                     # Reboot the VM after provisioning
+            EOT
+          + file_name = "vm.cloud-config.yaml"
+          + resize    = 0
+        }
+    }
+
+  # proxmox_virtual_environment_vm.vm will be created
+  + resource "proxmox_virtual_environment_vm" "vm" {
+      + acpi                    = true
+      + bios                    = "ovmf"
+      + id                      = (known after apply)
+      + ipv4_addresses          = (known after apply)
+      + ipv6_addresses          = (known after apply)
+      + keyboard_layout         = "en-us"
+      + mac_addresses           = (known after apply)
+      + machine                 = "q35"
+      + migrate                 = false
+      + name                    = "zenith-vm"
+      + network_interface_names = (known after apply)
+      + node_name               = "zenith"
+      + on_boot                 = true
+      + protection              = false
+      + reboot                  = false
+      + reboot_after_update     = true
+      + scsi_hardware           = "virtio-scsi-pci"
+      + started                 = true
+      + stop_on_destroy         = true
+      + tablet_device           = true
+      + tags                    = [
+          + "test",
+        ]
+      + template                = false
+      + timeout_clone           = 1800
+      + timeout_create          = 1800
+      + timeout_migrate         = 1800
+      + timeout_move_disk       = 1800
+      + timeout_reboot          = 1800
+      + timeout_shutdown_vm     = 1800
+      + timeout_start_vm        = 1800
+      + timeout_stop_vm         = 300
+      + vm_id                   = (known after apply)
+
+      + agent {
+          + enabled = true
+          + timeout = "15m"
+          + trim    = false
+          + type    = "virtio"
+        }
+
+      + clone {
+          + full      = true
+          + node_name = "apex"
+          + retries   = 1
+          + vm_id     = 900
+        }
+
+      + cpu {
+          + cores      = 2
+          + hotplugged = 0
+          + limit      = 0
+          + numa       = false
+          + sockets    = 1
+          + type       = "host"
+          + units      = 1024
+        }
+
+      + disk {
+          + aio               = "io_uring"
+          + backup            = true
+          + cache             = "none"
+          + datastore_id      = "ceph-workload"
+          + discard           = "ignore"
+          + file_format       = (known after apply)
+          + interface         = "scsi0"
+          + iothread          = false
+          + path_in_datastore = (known after apply)
+          + replicate         = true
+          + size              = 4
+          + ssd               = false
+        }
+
+      + initialization {
+          + datastore_id         = "ceph-workload"
+          + interface            = "scsi1"
+          + meta_data_file_id    = (known after apply)
+          + network_data_file_id = (known after apply)
+          + type                 = (known after apply)
+          + user_data_file_id    = (known after apply)
+          + vendor_data_file_id  = (known after apply)
+
+          + ip_config {
+              + ipv4 {
+                  + address = "dhcp"
+                }
+            }
+        }
+
+      + memory {
+          + dedicated      = 2048
+          + floating       = 0
+          + keep_hugepages = false
+          + shared         = 0
+        }
+
+      + network_device {
+          + bridge      = "vmbr0"
+          + enabled     = true
+          + firewall    = false
+          + mac_address = (known after apply)
+          + model       = "virtio"
+          + mtu         = 0
+          + queues      = 0
+          + rate_limit  = 0
+          + vlan_id     = 66
+        }
+        + operating_system {
+          + type = "l26"
+        }
+
+      + vga {
+          + memory = 16
+          + type   = "std"
+        }
+    }
+
+Plan: 2 to add, 0 to change, 0 to destroy.
+
+Changes to Outputs:
+  + vm_ip = (known after apply)
+
+Do you want to perform these actions?
+  Terraform will perform the actions described above.
+  Only 'yes' will be accepted to approve.
+
+  Enter a value: yes
+
+proxmox_virtual_environment_file.cloud_config: Creating...
+proxmox_virtual_environment_file.cloud_config: Creation complete after 1s [id=local:snippets/vm.cloud-config.yaml]
+proxmox_virtual_environment_vm.vm: Creating...
+proxmox_virtual_environment_vm.vm: Still creating... [10s elapsed]
+proxmox_virtual_environment_vm.vm: Still creating... [20s elapsed]
+proxmox_virtual_environment_vm.vm: Still creating... [30s elapsed]
+proxmox_virtual_environment_vm.vm: Still creating... [40s elapsed]
+proxmox_virtual_environment_vm.vm: Still creating... [50s elapsed]
+proxmox_virtual_environment_vm.vm: Still creating... [1m0s elapsed]
+proxmox_virtual_environment_vm.vm: Still creating... [1m10s elapsed]
+proxmox_virtual_environment_vm.vm: Still creating... [1m20s elapsed]
+proxmox_virtual_environment_vm.vm: Still creating... [1m30s elapsed]
+proxmox_virtual_environment_vm.vm: Still creating... [1m40s elapsed]
+proxmox_virtual_environment_vm.vm: Still creating... [1m50s elapsed]
+proxmox_virtual_environment_vm.vm: Still creating... [2m0s elapsed]
+proxmox_virtual_environment_vm.vm: Still creating... [2m10s elapsed]
+proxmox_virtual_environment_vm.vm: Still creating... [2m20s elapsed]
+proxmox_virtual_environment_vm.vm: Still creating... [2m30s elapsed]
+proxmox_virtual_environment_vm.vm: Still creating... [2m40s elapsed]
+proxmox_virtual_environment_vm.vm: Still creating... [2m50s elapsed]
+proxmox_virtual_environment_vm.vm: Creation complete after 2m53s [id=103]
+
+Apply complete! Resources: 2 added, 0 changed, 0 destroyed.
+
+Outputs:
+
+vm_ip = "192.168.66.156"
+```
+
+We've done it! We create our first VM on Proxmox using Terraform!
+![Summary of the newly created VM on Proxmox](img/proxmox-terraform-new-vm.png)
+
+### SSH Connection
+
+Cherry on the cake, the output gives us the IP address and we have injected my user's SSH-key, let's test to connect with SSH
+
+```bash
+$ ssh 192.168.66.156
+The authenticity of host '192.168.66.156 (192.168.66.156)' can't be established.
+ED25519 key fingerprint is SHA256:kSaXpIJYpJOBYfpVqiiH8OxhpgBY9WH/ggqFHo/20rg.
+This key is not known by any other names.
+Are you sure you want to continue connecting (yes/no/[fingerprint])? yes
+Warning: Permanently added '192.168.66.156' (ED25519) to the list of known hosts.
+Welcome to Ubuntu 24.04.2 LTS (GNU/Linux 6.8.0-60-generic x86_64)
+
+ * Documentation:  https://help.ubuntu.com
+ * Management:     https://landscape.canonical.com
+ * Support:        https://ubuntu.com/pro
+
+ System information as of Tue May 27 21:16:51 UTC 2025
+
+  System load:  0.0               Processes:             120
+  Usage of /:   78.2% of 2.84GB   Users logged in:       0
+  Memory usage: 10%               IPv4 address for eth0: 192.168.66.156
+  Swap usage:   0%
+
+Expanded Security Maintenance for Applications is not enabled.
+
+0 updates can be applied immediately.
+
+Enable ESM Apps to receive additional future security updates.
+See https://ubuntu.com/esm or run: sudo pro status
+
+
+
+The programs included with the Ubuntu system are free software;
+the exact distribution terms for each program are described in the
+individual files in /usr/share/doc/*/copyright.
+
+Ubuntu comes with ABSOLUTELY NO WARRANTY, to the extent permitted by
+applicable law.
+
+To run a command as administrator (user "root"), use "sudo <command>".
+See "man sudo_root" for details.
+
+vez@zenith-vm:~$
+```
+
+This works like a charm, wonderful
+
+
+---
 ## Develop a Terraform Module
 Explain how I transform my project into a reusable module
 
+---
 ## Conclusion
 Sum up what we realized and what are the next steps, use the module for my future project for kubernetes and associate it with Ansible