ci: deploy application to target via Ansible

ansible/playbooks/configure_nginx_proxy.yml

@@ -0,0 +1,56 @@
+---
+- name: Configure Nginx reverse proxy
+  hosts: targets
+  become: true
+
+  tasks:
+    - name: Deploy Nginx reverse proxy configuration
+      ansible.builtin.template:
+        src: "{{ playbook_dir }}/../templates/devops-platform.conf.j2"
+        dest: /etc/nginx/sites-available/devops-platform
+        owner: root
+        group: root
+        mode: '0644'
+      notify: Reload Nginx
+
+    - name: Enable DevOps application site
+      ansible.builtin.file:
+        src: /etc/nginx/sites-available/devops-platform
+        dest: /etc/nginx/sites-enabled/devops-platform
+        state: link
+      notify: Reload Nginx
+
+    - name: Disable default Nginx site
+      ansible.builtin.file:
+        path: /etc/nginx/sites-enabled/default
+        state: absent
+      notify: Reload Nginx
+
+    - name: Validate Nginx configuration
+      ansible.builtin.command:
+        cmd: nginx -t
+      changed_when: false
+
+    - name: Apply Nginx changes now
+      ansible.builtin.meta: flush_handlers
+
+    - name: Verify application through Nginx
+      ansible.builtin.uri:
+        url: http://127.0.0.1/health
+        method: GET
+        status_code: 200
+        return_content: true
+      register: proxy_health
+      retries: 5
+      delay: 2
+      until: proxy_health.status == 200
+
+    - name: Show proxied application health
+      ansible.builtin.debug:
+        var: proxy_health.json
+
+  handlers:
+    - name: Reload Nginx
+      ansible.builtin.service:
+        name: nginx
+        state: reloaded

ansible/playbooks/deploy_app.yml

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+---
+- name: Deploy DevOps application
+  hosts: targets
+  become: true
+
+  vars:
+    deploy_image: "mikhaillobanov/devops-platform:latest"
+
+  tasks:
+    - name: Create application directory
+      ansible.builtin.file:
+        path: /opt/devops-platform
+        state: directory
+        owner: root
+        group: root
+        mode: '0755'
+
+    - name: Copy Docker Compose configuration
+      ansible.builtin.copy:
+        src: "{{ playbook_dir }}/../../compose.yaml"
+        dest: /opt/devops-platform/compose.yaml
+        owner: root
+        group: root
+        mode: '0644'
+
+    - name: Deploy application with Docker Compose
+      ansible.builtin.command:
+        cmd: docker compose up -d --pull always
+        chdir: /opt/devops-platform
+      environment:
+        IMAGE: "{{ deploy_image }}"
+      register: deploy_result
+      changed_when: >
+        'Created' in deploy_result.stdout or
+        'Started' in deploy_result.stdout or
+        'Pulled' in deploy_result.stdout or
+        'Recreated' in deploy_result.stdout
+
+    - name: Wait for application health endpoint
+      ansible.builtin.uri:
+        url: http://127.0.0.1:8000/health
+        method: GET
+        status_code: 200
+        return_content: true
+      register: health_result
+      retries: 10
+      delay: 3
+      until: health_result.status == 200
+
+    - name: Show deployed image
+      ansible.builtin.debug:
+        msg: "Deployed image: {{ deploy_image }}"
+
+    - name: Show application health
+      ansible.builtin.debug:
+        var: health_result.json

ansible/playbooks/install_docker.yml

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+---
+- name: Install Docker Engine
+  hosts: targets
+  become: true
+
+  tasks:
+    - name: Update apt cache
+      ansible.builtin.apt:
+        update_cache: true
+        cache_valid_time: 3600
+
+    - name: Install Docker and Compose plugin
+      ansible.builtin.apt:
+        name:
+          - docker.io
+          - docker-compose-v2
+        state: present
+
+    - name: Ensure Docker is running
+      ansible.builtin.service:
+        name: docker
+        state: started
+        enabled: true
+
+    - name: Verify Docker Compose
+      ansible.builtin.command:
+        cmd: docker compose version
+      changed_when: false

ansible/playbooks/install_nginx.yml

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+---
+- name: Install and configure Nginx
+  hosts: targets
+  become: true
+
+  tasks:
+    - name: Install Nginx
+      ansible.builtin.apt:
+        name: nginx
+        state: present
+        update_cache: true
+
+    - name: Ensure Nginx is running
+      ansible.builtin.service:
+        name: nginx
+        state: started
+        enabled: true
+
+    - name: Deploy index page
+      ansible.builtin.template:
+        src: ../templates/index.html.j2
+        dest: /var/www/html/index.html
+        owner: root
+        group: root
+        mode: '0644'