sudo apt update && sudo apt install ansible -y
```text

# Inventory Example:

```ini
[web]
web-dev ansible_host=192.168.1.101
web-stage ansible_host=192.168.1.102
web-prod ansible_host=192.168.1.103

[db]
db-server ansible_host=192.168.1.104
```text

# Playbook Example:

```yaml
- name: Install NGINX on web servers
  hosts: web
  become: yes
  tasks:
    - name: Install NGINX
      apt:
        name: nginx
        state: present
```text

# Run It:

```bash
ansible-playbook install-nginx.yml
```text

* *

# Install Jenkins on `mgmt-node`:

```bash
curl -fsSL https://pkg.jenkins.io/debian/jenkins.io-2023.key | \
  sudo tee /usr/share/keyrings/jenkins-keyring.asc > /dev/null

echo deb [signed-by=/usr/share/keyrings/jenkins-keyring.asc] \
  https://pkg.jenkins.io/debian binary/ | \
  sudo tee /etc/apt/sources.list.d/jenkins.list > /dev/null

sudo apt update
sudo apt install jenkins -y
```text

**Access Jenkins UI:**  
`http://mgmt-node-ip:8080`

**Create Pipelines:**

*   Build app
*   Run tests
*   Push Docker image to private registry
*   Deploy using Ansible

* *

🐳 Step 6: Containerize Your App


# Dockerfile Example (Node.js):

```dockerfile
FROM node:18
WORKDIR /app
COPY . .
RUN npm install
CMD ["npm", "start"]
```text

**Push to Docker Registry** (or set up your own on Proxmox)

* *

☁️ Optional: Cloud Integration


*   Use **Terraform** to spin up AWS EC2 or Azure VMs
*   Use **Ansible** to provision and configure
*   Set up **Jenkins** to deploy app from Proxmox to AWS staging or prod

* *

🌐 Step 7: Load Balancing with NGINX


```nginx
upstream webapp {
    server 192.168.1.101;
    server 192.168.1.102;
}

server {
    listen 80;
    server_name yourdomain.com;

    location / {
        proxy_pass http://webapp;
        proxy_set_header Host $host;
    }
}
```text

Add **SSL with Let's Encrypt** using Certbot.

* *

🔁 Environments: Dev, Staging, Prod


*   **Dev (`web-dev`)**: Auto-deploy on Git push (CI only)
*   **Staging (`web-stage`)**: Deploy on merge to `main` branch
*   **Prod (`web-prod`)**: Manual approval + Ansible deploy

* *

📊 Step 8: Monitoring and Logging (Bonus)


*   Use **Prometheus + Grafana** on another container
*   Install **Node Exporter** on each VM
*   Use **Loki + Grafana** for central logging

* *

✅ Final Thoughts


With just a **single Proxmox host**, you’ve now built:

*   A full CI/CD pipeline
*   Multi-tier Linux infrastructure
*   Cloud-compatible deployment pipeline
*   Load balancing, monitoring, and staging workflows

You’re ready to take on real-world DevOps challenges — all from your homelab.

* *

💬 Questions?


Drop your comments or suggestions below. I'd love to hear how you’re building your own lab!