723 lines
23 KiB
Markdown
723 lines
23 KiB
Markdown
# Packer Examples for Proxmox
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## Table of Contents
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1. [Introduction](#introduction)
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1. [Requirements](#requirements)
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1. [Download](#download)
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1. [Configuration](#configuration)
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1. [Build](#build)
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1. [Troubleshoot](#troubleshoot)
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1. [Known Issues](#known-issues)
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1. [Unsupported Features](#unsupported-features)
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1. [Contributing](#contributing)
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1. [Credits](#credits)
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## Introduction
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This repository provides opinionated infrastructure-as-code examples to automate the creation of virtual machine images and their guest operating systems on Proxmox using [HashiCorp Packer][packer] and the [Packer Plugin for Proxmox][packer-plugin-proxmox] (`proxmox-iso` builder). All examples are authored in the HashiCorp Configuration Language ("HCL2").
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By default, the machine image artifacts are converted to templates within Proxmox after a virtual machine is built and configured according to the individual templates. With the Packer Plugin for Proxmox, a new template with a unique VMID gets created each time Packer runs successfully[^1]. This is unlike VMware, where if an item with the same name exists it will be overwritten.
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The following builds are available:
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## Linux Distributions
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| Operating System | Version |
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| :--- | :--- |
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| CentOS Stream | 9 |
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| CentOS Stream | 8 |
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| Debian | 12 |
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| Debian | 11 |
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| OpenSUSE Leap | 15.5 |
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| Ubuntu Server | 22.04 LTS |
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| Ubuntu Server | 20.04 LTS |
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## Requirements
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**Operating Systems**:
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Operating systems and versions tested with the project:
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- Proxmox PVE Version 8
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- Ubuntu Server 22.04 LTS (`x86_64`)
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- CentOS Stream 9 (`x86_64`)
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**Packer**:
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- HashiCorp [Packer][packer-install] 1.9.4 or higher.
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> **Note**
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>
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> Click on the operating system name to display the installation steps.
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- <details>
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<summary>Ubuntu</summary>
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The Terraform packages are signed using a private key controlled by HashiCorp, so you must configure your system to trust that HashiCorp key for package authentication.
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To configure your repository:
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```shell
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sudo bash -c 'wget -O- https://apt.releases.hashicorp.com/gpg | gpg --dearmor > /usr/share/keyrings/hashicorp-archive-keyring.gpg'
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```
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Verify the key's fingerprint:
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```shell
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gpg --no-default-keyring --keyring /usr/share/keyrings/hashicorp-archive-keyring.gpg --fingerprint
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```
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The fingerprint must match E8A0 32E0 94D8 EB4E A189 D270 DA41 8C88 A321 9F7B. You can also verify the key on [Security at HashiCorp][hcp-security] under Linux Package Checksum Verification.
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Add the official HashiCorp repository to your system:
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```shell
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sudo bash -c 'echo "deb [signed-by=/usr/share/keyrings/hashicorp-archive-keyring.gpg] \
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https://apt.releases.hashicorp.com $(lsb_release -cs) main" > /etc/apt/sources.list.d/hashicorp.list'
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```
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Install Packer from HashiCorp repository:
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```shell
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sudo apt update && sudo apt install packer
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```
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</details>
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- <details>
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<summary>CentOS Stream 9</summary>
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Install `yum-config-manager` to manage your repositories.
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```shell
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sudo yum install -y yum-utils
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```
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Use `yum-config-manager` to add the official HashiCorp Linux repository:
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```shell
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sudo yum-config-manager --add-repo https://rpm.releases.hashicorp.com/RHEL/hashicorp.repo
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```
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Install.
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```shell
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sudo yum -y install packer
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```
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</details>
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- Packer plugins:
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> **Note**
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>
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> Required plugins are automatically downloaded and initialized when using `./build.sh`. For dark sites, you may download the plugins and place these same directory as your Packer executable `/usr/local/bin` or `$HOME/.packer.d/plugins`.
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- HashiCorp [Packer Plugin for Proxmox][packer-plugin-proxmox] 1.1.3 or later.
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- [Packer Plugin for Git][packer-plugin-git] 0.4.2 or later - a community plugin for HashiCorp Packer.
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**Ansible**:
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- [Ansible][ansible] [Core][ansible-core] version 2.10 or higher.
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> **Note**
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>
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> Click on the operating system name to display the installation steps.
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- <details>
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<summary>Ubuntu</summary>
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It is recommended that you install ansible-core using your system's package manager instead of via pip.
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Refresh the repositories:
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```shell
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sudo apt update
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```
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Install software-properties-common:
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```shell
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sudo apt install -y software-properties-common
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```
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Add the Ansible repository to your system:
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```shell
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sudo add-apt-repository --yes --update ppa:ansible/ansible
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```
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Install ansible-core from the Ansible repository:
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```shell
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sudo apt install -y ansible-core
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```
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</details>
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- <details>
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<summary>CentOS Stream 9</summary>
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It is recommended that you install ansible-core using your system's package manager instead of via pip.
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Install.
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```shell
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dnf -y install ansible-core
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```
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</details>
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**Platform**:
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- Proxmox PVE 8.0 or later.
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# Download
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After installing the required software, the quickest way to get building is to clone this repository.
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```shell
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git clone https://github.com/ajschroeder/packer-examples-for-proxmox.git
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cd packer-examples-for-proxmox
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```
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The following table describes the directory structure.
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| Directory | Description |
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| :--- | :--- |
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| **`ansible`** | Contains the Ansible roles to prepare Linux machine image builds. |
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| **`builds`** | Contains the templates, variables, and configuration files for the machine image builds. |
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| **`manifests`** | Manifests created after the completion of the machine image builds. |
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# Configuration
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## Example Variables
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The project includes example variables files that you can use as a starting point for your own configuration.
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The [variables][packer-variables] are defined in `.pkrvars.hcl` files.
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Run the config script `./config.sh` to copy the `.pkrvars.hcl.example` files to a `config` directory.
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```shell
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./config.sh
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./build.sh
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```
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The `config` folder is the default folder. You can override the default by passing an alternate value as the first argument.
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For example:
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San Francisco: `us-west-1`
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```shell
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./config.sh us-west-1
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./build.sh us-west-1
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```
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Los Angeles: `us-west-2`
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```shell
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./config.sh us-west-2
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./build.sh us-west-2
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```
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This is useful for the purposes of running machine image builds for different environment.
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## Configuration Variables
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### Build
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Edit the `config/build.pkrvars.hcl` file to configure the credentials for the default account on machine images.
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```hcl title="config/build.pkrvars.hcl"
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build_username = "example"
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build_password = "<plaintext_password>"
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build_password_encrypted = "<sha512_encrypted_password>"
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build_key = "<public_key>"
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```
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You will need to generate a SHA-512 encrypted password for the `build_password_encrypted` using tools like `mkpasswd`.
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Run the following command to generate a SHA-512 encrypted password:
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```shell
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mkpasswd -m sha512
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```
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The following output is displayed:
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```shell
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Password: ***************
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[password hash]
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```
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Generate a public key for the `build_key` for public key authentication.
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Run the following command to generate a public key for the `build_key` for public key authentication.
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```shell
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ssh-keygen -t ecdsa -b 512 -C "<name@example.com>"
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```
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The following output is displayed:
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```shell
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Generating public/private ecdsa key pair.
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Enter file in which to save the key (/Users/example/.ssh/id_ecdsa):
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Enter passphrase (empty for no passphrase): **************
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Enter same passphrase again: **************
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Your identification has been saved in /Users/example/.ssh/id_ecdsa.
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Your public key has been saved in /Users/example/.ssh/id_ecdsa.pub.
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```
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The content of the public key, `build_key`, is added the key to the `~/.ssh/authorized_keys` file of the `build_username` on the Linux guest operating systems.
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> [!IMPORTANT]
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> Make sure to replace the example public keys and passwords!
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> By default, both Public Key Authentication and Password Authentication are enabled for Linux distributions.
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> If you wish to disable Password Authentication and only use Public Key Authentication, comment or remove the portion of the associated Ansible `configure` role.
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### Ansible
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Edit the `config/ansible.pkrvars.hcl` file to configure the credentials for the Ansible account on Linux machine images.
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```hcl title="config/ansible.pkrvars.hcl"
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ansible_username = "ansible"
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ansible_key = "<public_key>"
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```
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**Ansible User Password**
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A random password is auto-generated for the Ansible user.
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### Common
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Edit the `config/common.pkrvars.hcl` file to configure the following common variables:
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- Removable Media Settings
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- Boot and Provisioning Settings
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- HCP Packer Registry
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```hcl title="config/common.pkrvars.hcl"
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// Removable Media Settings
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common_iso_storage = "<Proxmox Storage Location>"
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// Boot and Provisioning Settings
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common_data_source = "http"
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common_http_ip = null
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common_http_port_min = 8000
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common_http_port_max = 8099
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common_ip_wait_timeout = "20m"
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common_shutdown_timeout = "15m"
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// HCP Packer
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common_hcp_packer_registry_enabled = false
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```
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### Data Source
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The default provisioning data source for Linux machine image builds is `http`. This is used to serve the kickstart files to the Linux guest operating system during the build.
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```hcl title="config/common.pkrvars.hcl"
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common_data_source = "http"
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```
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> **Note**
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> Packer includes a built-in HTTP server that is used to serve the kickstart files for Linux machine image builds.
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> If iptables/nftables is enabled on your Packer host, you will need to open `common_http_port_min` through `common_http_port_max` ports.
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>
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> iptables command:
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> ```shell
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> iptables -A INPUT -p tcp --match multiport --dports 8000:9000 -j ACCEPT
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> ```
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>
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> firewall-cmd example:
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> ```shell
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> firewall-cmd --zone=public --add-port=8000-9000/tcp --permanent
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> firewall-cmd --reload
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> ```
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You can change the `common_data_source` from `http` to `disk` to build supported Linux machine images without the need to use Packer's HTTP server. This is useful for environments that may not be able to route back to the system from which Packer is running. For example, building a machine image in VMware Cloud on AWS.
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```hcl title="config/common.pkrvars.hcl"
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common_data_source = "disk"
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```
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The Packer plugin's `cd_content` option is used when selecting `disk` unless the distribution does not support a secondary CD-ROM.
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### HTTP Binding
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If you need to define a specific IPv4 address from your host for Packer's built-in HTTP server, modify the `common_http_ip` variable from `null` to a `string` value that matches an IP address on your Packer host.
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```hcl title="config/common.pkrvars.hcl"
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common_http_ip = "172.16.11.254"
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```
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### Proxmox VE
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Edit the `config/proxmox.pkrvars.hcl` file to configure the following:
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- Promxox Endpoint and Credentials
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```hcl title="config/proxmox.pkrvars.hcl"
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// Proxmox Credentials
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proxmox_api_url = "<FQDN or IP of proxmox server>"
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proxmox_api_token_id = "name@realm!token"
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proxmox_api_token_secret = "<token secret>"
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proxmox_insecure_connection = false
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// Proxmox Settings
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proxmox_node = "<proxmox node name>"
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```
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The `proxmox_api_token_id` variable uses a specific format and, as the time of this writing, needs to be assigned to the `PVEAdmin` role. One of the to-do's is to document a least-privilege method of creating the Proxmox API token.
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For more information, please see the [Proxmox documentation][proxmox-api-tokens] on authentication.
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For Proxmox installs that use a self-signed certificate, you will want to set `proxmox_insecure_connection` to `true`.
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### Machine Images
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Edit the `*.auto.pkrvars.hcl` file in each `builds/<type>/<build>` directory to configure the following virtual machine hardware settings, as required:
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- CPUs `(int)`
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- CPU Cores `(int)`
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- Memory in MB `(int)`
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- Primary Disk in MB `(string)` (e.g. 32GB)
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- .iso Path `(string)`
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- .iso File `(string)`
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```hcl title="builds/linux/debian/11/linux-debian.auto.pkrvars.hcl"
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// Guest Operating System Metadata
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vm_os_language = "en_US"
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vm_os_keyboard = "us"
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vm_os_timezone = "UTC"
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vm_os_family = "linux"
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vm_os_name = "debian"
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vm_os_version = "11"
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// Virtual Machine Guest Operating System Setting
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vm_os_type = "l26"
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// Virtual Machine Hardware Settings
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vm_bios = "seabios"
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vm_cpu_count = 1
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vm_cpu_sockets = 1
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vm_cpu_type = "kvm64"
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vm_mem_size = 2048
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vm_disk_type = "virtio"
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vm_disk_size = "32G"
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vm_disk_format = "raw"
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vm_storage_pool = "vm-data"
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vm_disk_controller_type = "virtio-scsi-pci"
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vm_network_card_model = "virtio"
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vm_bridge_interface = "vmbr0"
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vm_vlan_tag = "102"
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// Removable Media Settings
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iso_path = "iso"
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iso_file = "ubuntu-22.04-live-server-amd64.iso"
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iso_checksum = "84aeaf7823c8c61baa0ae862d0a06b03409394800000b3235854a6b38eb4856f"
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// Boot Settings
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vm_boot = "order=virtio0;ide2;net0"
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vm_boot_wait = "5s"
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// EFI Settings (currently an unsupported feature)
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vm_firmware_path = "./OVMF.fd"
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vm_efi_storage_pool = "vm-data"
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vm_efi_pre_enrolled_keys = false
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vm_efi_type = "4m"
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```
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> [!NOTE]
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> All `variables.auto.pkrvars.hcl` default to using:
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> - VirtIO SCSI storage device
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> - VirtIO (paravirtualized) network card device
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> - BIOS boot firmware
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The defaults use VirtIO to balance out performance, compatibility, and ease of use. Feel free to change the storage and network controllers to suit your needs. However, if you change the storage or network controllers and run into issues you should change them back to defaults and try the builds again. I won't support any builds that don't use the VirtIO drivers.
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At this time UEFI is [not supported](#unsupported-features) so that means we are left with `seabios` as the default (and only) firmware setting. The reasons for not supporting UEFI may be boring, but the biggest reason is that Proxmox Virtual Machines that have EFI disks can't be live migrated between nodes or storage pools.
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If you are interested in more detail - when I first started testing these packer builds in my home lab I was using `ovmf` (UEFI) firmware. During my initial testing the ZFS pool where I housed my VMs cratered and I had to rebuild the pool and restore all my VMs from backups. During the recovery of my storage pool, I changed over to LVM and had to migrate VMs between storage pools several times and each VM that had EFI disks had to be shutdown, migrated, and then powered on. Offline migration isn't *that* much of an inconvenience, however at the time I was trying to figure out my VM storage and recover all my VMs it was just one more annoyance. All that said, I think Proxmox should support live migration regardless of VM firmware type.
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### VM Storage
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> [!WARNING]
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> The storage config is still very much a work in progress. Suggestions are welcome, see the contributing section.
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Edit the `config/linux-storage.pkrvars.hcl` file to configure storage for VM templates.
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This file is fairly lengthy and should be broken down into chunks.
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#### Disk Device
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```hcl
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// VM Storage Settings
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vm_disk_device = "vda"
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```
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`vm_disk_device`:`string` - This variable depends on the disk controller used inside of the specific `.auto.pkrvars.hcl` file. By default, the builds use the `virtio-scsi-pci` disk controller and that requires the use of `vda`. If you decide to run a SCSI controller, then you'll have to change the value to `sda`. This variable only accepts `sda` or `vda` as values.
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#### Disk Partitions
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`vm_disk_partitions`:`list[dict]` - Use this list to define the primary partitions that will be created when a specific build runs. Each of the builds process this list in order, so the first partition defined in the list will be the first partition created, the second one listed will be the second one created, and so on.
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##### Automatic Partitioning (All In One) Example
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This example is the simplest way to allocate storage within your templates. It makes use of the particular Linux distribution's automatic partitioning feature in their respective automatic installers.
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The three settings to note are:
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- name `(string)`: This must be set to `autopart` to use automatic partitioning
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- size `(int)`: This needs to be set to -1 to consume all available disk space
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- fstype `(string)` (optional): This can be set to `lvm`, `simple`, or left blank. Setting this to `simple` uses a single regular partition. Setting this to `lvm` still uses a single partition, but makes use of LVM. Leaving this value blank will default to a `simple` partitioning scheme.
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```hcl
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vm_disk_partitions = [
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{
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name = "autopart"
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size = -1,
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format = {
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label = "",
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fstype = "lvm",
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},
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mount = {
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path = "",
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options = "",
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},
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volume_group = "",
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},
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]
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```
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##### LVM Partitioning Example
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Below is an example of a partition layout for a VM template that boots with BIOS and uses LVM. The first partition is a 1GB primary partition and is mounted as /boot, finally the second partition consumes the rest of the free space (noted by -1 for space) and is setup for LVM.
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|
|
|
> [!WARNING]
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|
> The mount point of `/boot` is used by the templates and is required.
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|
|
|
```hcl
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|
vm_disk_partitions = [
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{
|
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name = "boot"
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size = 1000,
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format = {
|
|
label = "BOOTFS",
|
|
fstype = "ext4",
|
|
},
|
|
mount = {
|
|
path = "/boot",
|
|
options = "",
|
|
},
|
|
volume_group = "",
|
|
},
|
|
{
|
|
name = "vg_root"
|
|
size = -1,
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|
format = {
|
|
label = "",
|
|
fstype = "",
|
|
},
|
|
mount = {
|
|
path = "",
|
|
options = "",
|
|
},
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|
volume_group = "vg_root",
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|
},
|
|
]
|
|
```
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|
|
##### LVM Partitioning Example with CIS partitions
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|
Below is an example of a partition layout for a VM template that uses LVM and has extra partitions with mount options required by CIS for hardening a system. The first partition is a 1GB primary partition and is mounted as /boot, finally the second partition consumes the rest of the free space (noted by -1 for space) and is setup for LVM.
|
|
|
|
> [!WARNING]
|
|
> The mount point of `/boot` is used by the templates and is required.
|
|
|
|
```hcl title="config/linux-storage.pkrvars.hcl"
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|
// VM Storage Settings
|
|
vm_disk_device = "vda"
|
|
vm_disk_use_swap = true
|
|
vm_disk_partitions = [
|
|
{
|
|
name = "boot"
|
|
size = 1000,
|
|
format = {
|
|
label = "BOOTFS",
|
|
fstype = "ext4",
|
|
},
|
|
mount = {
|
|
path = "/boot",
|
|
options = "",
|
|
},
|
|
volume_group = "",
|
|
},
|
|
{
|
|
name = "vg_root"
|
|
size = -1,
|
|
format = {
|
|
label = "",
|
|
fstype = "",
|
|
},
|
|
mount = {
|
|
path = "",
|
|
options = "",
|
|
},
|
|
volume_group = "vg_root",
|
|
},
|
|
]
|
|
vm_disk_lvm = [
|
|
{
|
|
name: "vg_root",
|
|
partitions: [
|
|
{
|
|
name = "lv_swap",
|
|
size = 1000,
|
|
format = {
|
|
label = "SWAPFS",
|
|
fstype = "swap",
|
|
},
|
|
mount = {
|
|
path = "",
|
|
options = "",
|
|
},
|
|
},
|
|
{
|
|
name = "lv_root",
|
|
size = 3000,
|
|
format = {
|
|
label = "ROOTFS",
|
|
fstype = "ext4",
|
|
},
|
|
mount = {
|
|
path = "/",
|
|
options = "",
|
|
},
|
|
},
|
|
{
|
|
name = "lv_home",
|
|
size = 1000,
|
|
format = {
|
|
label = "HOMEFS",
|
|
fstype = "ext4",
|
|
},
|
|
mount = {
|
|
path = "/home",
|
|
options = "nodev,nosuid",
|
|
},
|
|
},
|
|
{
|
|
name = "lv_opt",
|
|
size = 2000,
|
|
format = {
|
|
label = "OPTFS",
|
|
fstype = "ext4",
|
|
},
|
|
mount = {
|
|
path = "/opt",
|
|
options = "nodev",
|
|
},
|
|
},
|
|
{
|
|
name = "lv_tmp",
|
|
size = 2000,
|
|
format = {
|
|
label = "TMPFS",
|
|
fstype = "ext4",
|
|
},
|
|
mount = {
|
|
path = "/tmp",
|
|
options = "nodev,noexec,nosuid",
|
|
},
|
|
},
|
|
{
|
|
name = "lv_var",
|
|
size = 3000,
|
|
format = {
|
|
label = "VARFS",
|
|
fstype = "ext4",
|
|
},
|
|
mount = {
|
|
path = "/var",
|
|
options = "nodev",
|
|
},
|
|
},
|
|
{
|
|
name = "lv_var_tmp",
|
|
size = 1000,
|
|
format = {
|
|
label = "VARTMPFS",
|
|
fstype = "ext4",
|
|
},
|
|
mount = {
|
|
path = "/var/tmp",
|
|
options = "nodev,noexec,nosuid",
|
|
},
|
|
},
|
|
{
|
|
name = "lv_var_log",
|
|
size = 1000,
|
|
format = {
|
|
label = "VARLOGFS",
|
|
fstype = "ext4",
|
|
},
|
|
mount = {
|
|
path = "/var/log",
|
|
options = "nodev,noexec,nosuid",
|
|
},
|
|
},
|
|
{
|
|
name = "lv_var_audit",
|
|
size = 500,
|
|
format = {
|
|
label = "AUDITFS",
|
|
fstype = "ext4",
|
|
},
|
|
mount = {
|
|
path = "/var/log/audit",
|
|
options = "nodev,noexec,nosuid",
|
|
},
|
|
},
|
|
],
|
|
}
|
|
]
|
|
```
|
|
|
|
|
|
# Known Issues
|
|
|
|
## CentOS Stream 8
|
|
- Anaconda will stop the install with a message complaining about not enough disk space. This is a known issue with kickstart on RHEL 8, however none of the fixes that have been tried have worked. If you want to build a CentOS-Stream-8 template, you will need to access the console of the machine and simply ignore the warning and continue the installation.
|
|
- OpenSUSE does not support custom storage layouts at this time. This is planned for a future release
|
|
|
|
# Unsupported Features
|
|
- UEFI firmware
|
|
- Networking configurations other than DHCP for templates
|
|
|
|
# Contributing
|
|
Contributions are welcome, please read the [CONTRIBUTING](.github/CONTRIBUTING.md) document for more details.
|
|
|
|
# Credits
|
|
The repository is modeled after the [VMware Packer Examples][packer-examples-for-vsphere] repository. As someone who initially struggled with organization of a packer project, the VMware repository helped me significantly.
|
|
|
|
|
|
[//]: Links
|
|
[ansible]: https://www.ansible.com
|
|
[ansible-core]: https://docs.ansible.com/ansible/latest/installation_guide/intro_installation.html#selecting-an-ansible-package-and-version-to-install
|
|
[packer]: https://www.packer.io
|
|
[packer-examples-for-vsphere]: https://github.com/vmware-samples/packer-examples-for-vsphere
|
|
[packer-install]: https://developer.hashicorp.com/packer/tutorials/docker-get-started/get-started-install-cli
|
|
[packer-plugin-git]: https://github.com/ethanmdavidson/packer-plugin-git
|
|
[packer-plugin-proxmox]: https://developer.hashicorp.com/packer/integrations/hashicorp/proxmox
|
|
[packer-variables]: https://developer.hashicorp.com/packer/docs/templates/hcl_templates/variables
|
|
[proxmox-api-tokens]: https://pve.proxmox.com/pve-docs/pveum-plain.html
|
|
|
|
|
|
[^1]: If you try to create a VM with the same ID as an existing VM the Proxmox API will generate a 500 error. |