chore: Configuring Nix, Packer, Ansible, Terraform

.editorconfig

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+# https://editorconfig.org/
+
+root = true
+
+[*]
+indent_style = space
+indent_size = 4
+insert_final_newline = true
+trim_trailing_whitespace = true
+end_of_line = lf
+charset = utf-8
+
+# Docstrings and comments use max_line_length = 79
+[*.py]
+max_line_length = 119
+
+# The JSON files contain newlines inconsistently
+[*.json]
+indent_size = 2
+insert_final_newline = ignore
+
+# Use 2 spaces for YAML files
+[*.yml]
+indent_size = 2
+
+# Use 2 spaces for Terraform files
+[*.tf]
+indent_size = 2
+
+# Use 2 spaces for Packer files
+[packer.pkr.hcl]
+indent_size = 2
+
+# Use 2 spaces for Nix files
+[*.nix]
+indent_size = 2

.env.dist

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+AWS_ACCESS_KEY_ID=
+AWS_SECRET_ACCESS_KEY=
+AWS_DEFAULT_REGION=us-east-2
+AWS_CLI_AUTO_PROMPT=on
+
+NIXPKGS_ALLOW_UNFREE=1

.github/workflows/pr.yml

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+name: Build and Test on Pull Request
+
+on: [pull_request]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    env:
+      ### AWS ###
+      AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
+      AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+      AWS_DEFAULT_REGION: ${{ secrets.AWS_DEFAULT_REGION }}
+      NIXPKGS_ALLOW_UNFREE: 1
+    steps:
+    - uses: actions/checkout@v3
+    - run: |
+        # Create with liberal rights, otherwise cache action will complain
+        # about permission errors.
+        sudo mkdir -p /nix/store
+        sudo chmod -R 777 /nix
+    - name: Cache nix env take N+1
+      id: myCacheStep
+      uses: actions/cache@v2
+      with:
+        path: |
+          # See https://github.com/actions/cache/pull/726
+          /nix/store/**
+          # Missing something?
+          /nix/var/nix/*/*
+          /nix/var/nix/db/*
+          /nix/var/nix/db/*/**
+          !/nix/var/nix/daemon-socket/socket
+          !/nix/var/nix/userpool/*
+          !/nix/var/nix/gc.lock
+          !/nix/var/nix/db/big-lock
+          !/nix/var/nix/db/reserved
+        key: ${{ runner.os }}-nix-store
+
+    - uses: cachix/install-nix-action@v18
+      with:
+        nix_path: nixpkgs=channel:nixos-unstable
+
+    - name: Cache Terraform directory
+      uses: actions/cache@v2
+      with:
+        path: |
+          .terraform
+        key: ${{ runner.os }}-terraform-${{ hashFiles('**/*.tf') }}
+        restore-keys: |
+          ${{ runner.os }}-terraform-
+
+    - name: Install custom nix env
+      if: steps.myCacheStep.outputs.cache-hit != 'true'
+      run: nix-env -f shell.nix -i '.*'
+    - name: Packer Init
+      run: nix-shell --run "task packer.init"
+    - name: Packer Format
+      run: nix-shell --run "task packer.format"
+    - name: Packer Validate
+      run: nix-shell --run "task packer.validate"
+    - name: Packer Build
+      run: nix-shell --run "task packer.build"
+    - name: Terraform Init
+      run: nix-shell --run "task terraform.init"
+    - name: Terraform Format
+      run: nix-shell --run "task terraform.format"
+    - name: Terraform Validate
+      run: nix-shell --run "task terraform.validate"
+    - name: Terraform Apply
+      run: nix-shell --run "task terraform.apply"

.gitignore

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+__pycache__
+.DS_Store
+.env
+env*
+!env.py
+.terraform
+.terraform.lock.hcl
+terraform.tfstate
+terraform.tfstate.backup
+.venv
+.pytest_cache

README.md

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+Terrami Project
+==============
+
+Reliable way to create and provision an AWS AMI with Packer, Ansible & Terraform (others Nix, Taskfile, AWSCLI)
+
+**Is highly recommended have Nix installed, otherwise you will need manually install: Packer, Ansible, Terraform and Taskfile and AWSCLI**
+
+# Installation
+
+1. First, clone this repository:
+
+```bash
+git clone https://github.com/nietzscheson/terrami && cd terrami
+```
+2. Export the environment vars:
+```bash
+export AWS_ACCESS_KEY_ID=your-credentials
+export AWS_SECRET_ACCESS_KEY=your-credentials
+export AWS_DEFAULT_REGION=us-east-2
+export AWS_CLI_AUTO_PROMPT=on
+export NIXPKGS_ALLOW_UNFREE=1
+```
+3. Start the Nix-shell:
+```bash
+nix-shell
+```
+3. Check all the Taskfile commands:
+```bash
+task --list
+task: Available tasks for this project:
+* ansible.check:            Check the Ansible Playbook
+* aws.sts:                  Who am I in AWS
+* packer.build:             Build the Packer Image
+* packer.format:            Format the Packer Template
+* packer.validate:          Validate the Packer Template
+* terraform.apply:          Apply the Terraform Deployment
+* terraform.destroy:        Destroy the Terraform Deployment
+* terraform.format:         Format the Terraform Code
+* terraform.plan:           Plan the Terraform Deployment
+* terraform.validate:       Validate the Terraform Code
+```
+
+
+

packer/packer.pkr.hcl

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+packer {
+  required_plugins {
+    amazon = {
+      version = "~> 1"
+      source  = "github.com/hashicorp/amazon"
+    }
+
+    ansible = {
+      source  = "github.com/hashicorp/ansible"
+      version = "~> 1"
+    }
+
+  }
+}
+
+variable "region" {
+  type    = string
+  default = "us-east-2"
+}
+
+locals { timestamp = regex_replace(timestamp(), "[- TZ:]", "") }
+
+source "amazon-ebs" "default" {
+  ami_name      = "az2-base-${local.timestamp}"
+  instance_type = "t2.micro"
+  region        = var.region
+  source_ami_filter {
+    filters = {
+      name                = "amzn2-ami-hvm-*-x86_64-gp2"
+      root-device-type    = "ebs"
+      virtualization-type = "hvm"
+    }
+    most_recent = true
+    owners      = ["137112412989"]
+  }
+  ssh_username = "ec2-user"
+}
+
+build {
+  sources = ["source.amazon-ebs.default"]
+
+  provisioner "ansible" {
+    playbook_file = "./playbook.yml"
+  }
+}

packer/playbook.yml

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+---
+- name: Basic setup for Amazon Linux 2
+  hosts: all
+  become: yes
+
+  tasks:
+    - name: Update all packages
+      yum:
+        name: "*"
+        state: latest
+
+    - name: Ensure a list of yum packages are installed
+      yum:
+        name: "{{ packages }}"
+        state: latest
+        update_cache: yes
+      vars:
+        packages:
+        - python-pip
+        - yum-utils
+        - device-mapper-persistent-data
+        - lvm2
+        - amazon-linux-extras
+
+    - name: Add extras repository
+      shell: yum-config-manager --enable extras
+
+    - name: Install basic packages
+      yum:
+        name:
+          - git
+          - vim
+          - htop
+        state: present

shell.nix

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+{ pkgs ? import <nixpkgs> {} }:
+
+let
+  pythonEnv = pkgs.python311.withPackages (ps: [
+    ps.pip
+    ps.debugpy
+    ps.ipython
+  ]);
+in
+
+pkgs.mkShell {
+  nativeBuildInputs = with pkgs; [
+    cmake
+    poetry
+    jq
+    tree
+  ];
+
+  buildInputs = with pkgs; [
+    terraform
+    packer
+    pythonEnv
+  ];
+
+  packages = with pkgs; [
+    git
+    python311
+    awscli
+    httpie
+    go-task
+    ansible
+  ];
+
+  shellHook = ''
+    pyenv global system
+    export PATH=$PATH:${pythonEnv}/bin
+    export LC_ALL="C.UTF-8"
+  '';
+}

taskfile.yml

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+version: "3"
+
+tasks:
+  aws.sts:
+    desc: Who am I in AWS
+    cmds:
+      - echo "Getting AWS STS credentials..."
+      - aws sts get-caller-identity
+  packer.init:
+    desc: Initialize Packer
+    cmds:
+      - echo "Initializing Packer..."
+      - packer init -upgrade packer.pkr.hcl
+    dir: ./packer
+  packer.format:
+    desc: Format the Packer Template
+    dir: ./packer
+    cmds:
+      - echo "Formatting Packer template..."
+      - packer fmt packer.pkr.hcl
+
+  packer.validate:
+    desc: Validate the Packer Template
+    dir: ./packer
+    cmds:
+      - echo "Validating Packer template..."
+      - packer validate packer.pkr.hcl
+
+  packer.build:
+    desc: Build the Packer Image
+    dir: ./packer
+    cmds:
+      - echo "Building Packer image..."
+      - packer build packer.pkr.hcl
+
+  ansible.check:
+    desc: Check the Ansible Playbook
+    dir: ./packer
+    cmds:
+      - echo "Checking Ansible playbook..."
+      - ansible-playbook --check playbook.yml
+
+  terraform.init:
+    desc: Initialize Terraform
+    dir: ./terraform
+    cmds:
+      - echo "Initializing Terraform..."
+      - terraform init
+
+  terraform.format:
+    desc: Format the Terraform Code
+    dir: ./terraform
+    cmds:
+      - echo "Formatting Terraform code..."
+      - terraform fmt
+
+  terraform.validate:
+    desc: Validate the Terraform Code
+    dir: ./terraform
+    cmds:
+      - echo "Validating Terraform code..."
+      - terraform validate
+
+  terraform.plan:
+    desc: Plan the Terraform Deployment
+    dir: ./terraform
+    cmds:
+      - echo "Planning Terraform deployment..."
+      - terraform plan
+
+  terraform.apply:
+    desc: Apply the Terraform Deployment
+    dir: ./terraform
+    cmds:
+      - echo "Applying Terraform deployment..."
+      - terraform apply -auto-approve
+
+  terraform.destroy:
+    desc: Destroy the Terraform Deployment
+    dir: ./terraform
+    cmds:
+      - echo "Destroying Terraform deployment..."
+      - terraform destroy -auto-approve