system/ansible/bootstrap.yaml

---
- name: Bootstrap K3s and ArgoCD
  hosts: vps
  become: yes
  vars:
    # URL of the official ArgoCD manifest
    argocd_manifest_url: "https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml"
    # Local path to the root-app.yaml manifest (at the root of the repository)
    root_app_path: "../root-app.yaml"
    
    # Tailscale secrets are retrieved from environment variables
    tailscale_client_id: "{{ lookup('ansible.builtin.env', 'TAILSCALE_CLIENT_ID') | default('', true) }}"
    tailscale_client_secret: "{{ lookup('ansible.builtin.env', 'TAILSCALE_CLIENT_SECRET') | default('', true) }}"


  tasks:
    # =========================================================================
    # INITIAL NODE CONFIGURATION
    # =========================================================================
    - name: Initial Node Configuration
      block:
        - name: Install prerequisites
          ansible.builtin.apt:
            name:
              - curl
              - git
              - ca-certificates
              - python3-kubernetes
            state: present
            update_cache: yes

    # =========================================================================
    # K3S INSTALLATION AND CONFIGURATION
    # =========================================================================
    - name: K3s Installation and Configuration
      block:
        - name: Check if K3s is already installed
          ansible.builtin.stat:
            path: /usr/local/bin/k3s
          register: k3s_bin

        - name: Install K3s (default configuration)
          ansible.builtin.shell: |
            curl -sfL https://get.k3s.io | sh -            
          when: not k3s_bin.stat.exists

        - name: Ensure ~/.kube directory exists
          ansible.builtin.file:
            path: ~/.kube
            state: directory
            mode: '0700'

        - name: Copy K3s kubeconfig to default root config
          ansible.builtin.copy:
            src: /etc/rancher/k3s/k3s.yaml
            dest: ~/.kube/config
            remote_src: yes
            owner: root
            group: root
            mode: '0600'

        - name: Also configure kubeconfig for the ansible_user
          block:
            - name: Ensure non-root user ~/.kube directory exists
              ansible.builtin.file:
                path: "/home/{{ ansible_user }}/.kube"
                state: directory
                owner: "{{ ansible_user }}"
                group: "{{ ansible_user }}"
                mode: '0700'

            - name: Copy K3s kubeconfig to non-root user config
              ansible.builtin.copy:
                src: /etc/rancher/k3s/k3s.yaml
                dest: "/home/{{ ansible_user }}/.kube/config"
                remote_src: yes
                owner: "{{ ansible_user }}"
                group: "{{ ansible_user }}"
                mode: '0600'
          when: ansible_user is defined and ansible_user != 'root'

        - name: Wait for K3s node to be ready
          ansible.builtin.shell: |
            kubectl get nodes | grep -q -w "Ready"            
          register: node_status
          until: node_status.rc == 0
          retries: 30
          delay: 5
          changed_when: false

        - name: Create tailscale namespace
          kubernetes.core.k8s:
            definition:
              apiVersion: v1
              kind: Namespace
              metadata:
                name: tailscale
            state: present

        - name: Create "operator-oauth" tailscale secret if credentials are provided
          kubernetes.core.k8s:
            definition:
              apiVersion: v1
              kind: Secret
              metadata:
                name: operator-oauth
                namespace: tailscale
              type: Opaque
              stringData:
                client_id: "{{ tailscale_client_id }}"
                client_secret: "{{ tailscale_client_secret }}"
            state: present
          when: tailscale_client_id != "" and tailscale_client_secret != ""

    # =========================================================================
    # ARGOCD INSTALLATION
    # =========================================================================
    - name: ArgoCD Installation
      block:
        - name: Create ArgoCD namespace
          kubernetes.core.k8s:
            definition:
              apiVersion: v1
              kind: Namespace
              metadata:
                name: argocd
            state: present

        - name: Install ArgoCD (Server-Side Apply)
          kubernetes.core.k8s:
            src: "{{ argocd_manifest_url }}"
            namespace: argocd
            state: present
            apply: true
            server_side_apply:
              field_manager: ansible
              force_conflicts: true

        - name: Wait for ArgoCD Server deployment to be operational
          ansible.builtin.shell: |
            kubectl rollout status deployment/argocd-server -n argocd --timeout=300s            
          changed_when: false

    # =========================================================================
    # SYSTEM BOOTSTRAP (Cert-Manager, ClusterIssuer, Forgejo)
    # =========================================================================
    - name: System Bootstrap (Cert-Manager, ClusterIssuer, Forgejo)
      block:
        - name: Install Cert-Manager (from official manifest)
          kubernetes.core.k8s:
            src: "https://github.com/cert-manager/cert-manager/releases/download/v1.12.0/cert-manager.yaml"
            state: present
            apply: true
            server_side_apply:
              field_manager: ansible
              force_conflicts: true

        - name: Wait for Cert-Manager webhook to be ready
          ansible.builtin.shell: |
            kubectl rollout status deployment/cert-manager-webhook -n cert-manager --timeout=300s            
          changed_when: false

        - name: Deploy Let's Encrypt ClusterIssuer
          kubernetes.core.k8s:
            definition: "{{ lookup('file', '../platform/cluster/lets-encrypt.yaml') }}"
            state: present

        - name: Deploy Forgejo Namespace
          kubernetes.core.k8s:
            definition: "{{ lookup('file', '../platform/forgejo/namespace.yaml') }}"
            state: present

        - name: Deploy Forgejo Instance resources
          kubernetes.core.k8s:
            definition: "{{ lookup('file', '../platform/forgejo/instance/' ~ item) }}"
            state: present
          loop:
            - registry-secret.yaml
            - pvc.yaml
            - service.yaml
            - deployment.yaml
            - ingress.yaml

        - name: Deploy Forgejo Runner resources
          kubernetes.core.k8s:
            definition: "{{ lookup('file', '../platform/forgejo/runner/' ~ item) }}"
            state: present
          loop:
            - secret.yaml
            - pvc.yaml
            - configmap.yaml
            - deployment.yaml