Created placeholder for future folder structure

README.md

@@ -0,0 +1,37 @@
+# Terraform-Ansible-Helm Deployer
+[![Super-Linter](https://github.com/doddophonique/tah-deploy/actions/workflows/super-linter.yml/badge.svg)](https://github.com/marketplace/actions/super-linter)
+## Usage
+From the `terraform/` folder:
+```shell
+terraform init
+terraform plan
+terraform apply
+```
+
+## Decisions and goals
+The `terraform-provider-libvirt` has been chosen over Vagrant to deploy the VMs as a way to simplify the structure of the project. The choice over a cloud provider such as AWS or GCP has been done to not incur into billing cost during troubleshooting and deployments.
+### Terraform script
+The Terraform script roughly follows these steps:
+  1. Deploy 3 VMs (one master and two workers) with:
+     - 2 vCPUs;
+     - 2GB vRAM;
+     - 20GB of disk space;
+     - Ubuntu 24.04 LTS;
+     - An Ansible user.
+  2. Call an Ansible Playbook that:
+     1. Configures the master node and installs Kubernetes;
+     2. Configures the network for the Kubernetes cluster;
+     3. Configures the worker nodes and installs Kubernetes.
+  3. Create the `kiratech-test` namespace;
+  4. Run the CIS Kubernetes benchmark;
+  5. Copy the helm folder to the master node and install helm.
+### Next steps
+The script currently lacks:
+- [ ] Capability of deploying an Helm application;
+- [ ] Usage of Terraform outputs to populate Ansible files;
+
+### CIS Kubernetes Benchmark
+The CIS Benchamrk is one of (if not the) most popular benchmarks publicly available, and also has a simple way to implement it in a deployment pipeline using the [kube-bench](https://github.com/aquasecurity/kube-bench) implementation.
+
+## Linting
+The project uses GitHub Actions as a CI tool, running [super-linter](https://github.com/super-linter/super-linter) on the entire codebase.

ansible/inventory.ini

@@ -8,3 +8,4 @@
 [all:vars]
 ansible_user=ansible
 ansible_ssh_private_key_file=../terraform/.local/.ssh/id_rsa
+ansible_python_interpreter=/usr/bin/python3

ansible/kubernetes_master/tasks/main.yml

@@ -123,9 +123,7 @@
     mode: "0755"
 
 - name: Download Kubernetes GPG key securely
-  ansible.builtin.shell: |
-    set -o pipefail
-    curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.31/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
+  ansible.builtin.shell: curl -fsSL https://pkgs.k8s.io/core:/stable:/v1.31/deb/Release.key | sudo gpg --dearmor -o /etc/apt/keyrings/kubernetes-apt-keyring.gpg
 
 - name: Add Kubernetes repository
   ansible.builtin.apt_repository:
@@ -139,7 +137,7 @@
       - kubeadm
       - kubectl
     state: present
-    update_cache: true
+    update_cache: yes
 
 - name: Hold kubelet, kubeadm, kubectl packages
   ansible.builtin.command:
@@ -213,6 +211,8 @@
 - name: Initialize Kubernetes control plane
   ansible.builtin.command:
     cmd: kubeadm init --pod-network-cidr=10.244.0.0/16
+    creates: /tmp/kubeadm_output
+  register: kubeadm_init_output
   become: true
   changed_when: false
 
@@ -223,15 +223,17 @@
     owner: ansible
     mode: "0755"
 
-- name: Generate join command
-  ansible.builtin.command: kubeadm token create --print-join-command
-  register: join_command
-
-- name: Copy join command to local file
-  ansible.builtin.copy:
-    content: '"{{ join_command.stdout_lines[0] }}"'
-    dest: '"/tmp/join-command"'
+- name: Store Kubernetes initialization output to file
+  copy:
+    content: "{{ kubeadm_init_output.stdout }}"
+    dest: /tmp/kubeadm_output
+  become: true
   delegate_to: localhost
+
+- name: Generate the Join Command
+  ansible.builtin.shell: cat /tmp/kubeadm_output | tail -n 2 | sed ':a;N;$!ba;s/\\\n\s*/ /g' > /tmp/join-command
+  delegate_to: localhost
+
 - name: Set permissions for the Join Executable
   ansible.builtin.file:
     path: /tmp/join-command

ansible/kubernetes_worker/tasks/main.yml

@@ -11,6 +11,10 @@
     state: present
     update_cache: true
 
+- name: Set a hostname
+  ansible.builtin.hostname:
+    name: worker-{{ hostvars[inventory_hostname]['ansible_default_ipv4']['address'] }}
+
 - name: Install Docker
   ansible.builtin.apt:
     name: docker.io

terraform/main.tf

@@ -10,6 +10,10 @@ terraform {
         source = "hashicorp/template"
         version = "2.2.0"
     }
+    null = {
+      source = "hashicorp/null"
+      version = "3.2.3"
+    }
   }
 }
 
@@ -47,6 +51,9 @@ resource libvirt_volume ubuntu2404_resized {
   count          = local.masternodes + local.workernodes
 }
 
+data template_file private_key {
+  template = file("${path.module}/.local/.ssh/id_rsa")
+}
 
 data template_file public_key {
   template = file("${path.module}/.local/.ssh/id_rsa.pub")
@@ -158,3 +165,75 @@ resource libvirt_domain k8s_workers {
     autoport    = true
   }
 }
+
+resource null_resource run_ansible {
+    depends_on = [ 
+      libvirt_domain.k8s_masters,
+      libvirt_domain.k8s_workers
+    ]     
+
+    provisioner "local-exec" {
+        command = "ANSIBLE_HOST_KEY_CHECKING=False ansible-playbook -vvv -i ../ansible/inventory.ini ../ansible/k8s.yml -K"
+    }
+}
+
+resource null_resource create_namespace {
+    depends_on = [ 
+      null_resource.run_ansible
+    ]
+    provisioner "remote-exec"  {
+      inline = ["sudo mkdir ~/.kube", "sudo cp /etc/kubernetes/admin.conf ~/.kube/", "sudo mv ~/.kube/admin.conf ~/.kube/config", "sudo service kubelet restart", "sudo kubectl --kubeconfig ~/.kube/config create namespace kiratech-test"]
+
+      connection {
+          host        = libvirt_domain.k8s_masters[0].network_interface[0].addresses[0]
+          type        = "ssh"
+          user        = "ansible"
+          private_key = data.template_file.private_key.rendered
+      } 
+    }
+}
+
+resource null_resource run_benchmark {
+    depends_on = [  
+      null_resource.create_namespace
+    ] 
+    provisioner "remote-exec" {
+        inline = ["curl https://raw.githubusercontent.com/aquasecurity/kube-bench/refs/heads/main/job-master.yaml > job-master.yaml", "kubectl --kubeconfig ~/.kube/config apply -f job-master.yaml", "rm job-master.yaml"]
+        
+        
+        connection {
+            host        = libvirt_domain.k8s_masters[0].network_interface[0].addresses[0]
+	        type        = "ssh"
+            user        = "ansible"
+            private_key = data.template_file.private_key.rendered
+        } 
+    }
+}
+
+resource null_resource deploy_helm {
+    depends_on = [
+      null_resource.run_benchmark
+    ]
+    
+    provisioner "local-exec" {
+        command = "scp -i ${path.module}/.local/.ssh/id_rsa -r ../helm ansible@${libvirt_domain.k8s_masters[0].network_interface[0].addresses[0]}:/home/ansible/helm"
+    }
+    # https://helm.sh/docs/intro/install/#from-apt-debianubuntu
+    provisioner "remote-exec" {
+        inline = [
+          "curl https://baltocdn.com/helm/signing.asc | gpg --dearmor | sudo tee /usr/share/keyrings/helm.gpg > /dev/null",
+          "sudo apt-get install apt-transport-https --yes",
+          "echo \"deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/helm.gpg] https://baltocdn.com/helm/stable/debian/ all main\" | sudo tee /etc/apt/sources.list.d/helm-stable-debian.list",
+          "sudo apt-get update",
+          "sudo apt-get install helm"
+        ]
+            
+               
+        connection {
+            host        = libvirt_domain.k8s_masters[0].network_interface[0].addresses[0]
+	        type        = "ssh"
+            user        = "ansible"
+            private_key = data.template_file.private_key.rendered
+        } 
+    }
+}