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CI/CD Pipeline Setup Guide

This guide covers setting up a complete Continuous Integration/Continuous Deployment (CI/CD) pipeline with a CI/CD Linode and Production Linode for automated builds, testing, and deployments.

Architecture Overview

┌─────────────────┐    ┌─────────────────┐    ┌─────────────────┐
│   Forgejo Host  │    │   CI/CD Linode  │    │ Production Linode│
│   (Repository)  │    │ (Actions Runner)│    │ (Docker Deploy) │
│                 │    │ + Harbor Registry│   │                 │
└─────────────────┘    └─────────────────┘    └─────────────────┘
         │                       │                       │
         │                       │                       │
         └─────────── Push ──────┼───────────────────────┘
                                 │
                                 └─── Deploy ────────────┘

Pipeline Flow

  1. Code Push: Developer pushes code to Forgejo repository
  2. Automated Testing: CI/CD Linode runs tests on backend and frontend
  3. Image Building: If tests pass, Docker images are built
  4. Registry Push: Images are pushed to Harbor registry on CI/CD Linode
  5. Production Deployment: Production Linode pulls images and deploys
  6. Health Check: Application is verified and accessible

Prerequisites

  • Two Ubuntu 24.04 LTS Linodes with root access
  • Basic familiarity with Linux commands and SSH
  • Forgejo repository with Actions enabled
  • Optional: Domain name for Production Linode (for SSL/TLS)

Quick Start

  1. Set up CI/CD Linode (Steps 1-13)
  2. Set up Production Linode (Steps 14-26)
  3. Configure SSH key exchange (Step 27)
  4. Set up Forgejo repository secrets (Step 28)
  5. Test the complete pipeline (Step 29)

What's Included

CI/CD Linode Features

  • Forgejo Actions runner for automated builds
  • Harbor container registry for image storage
  • Harbor web UI for image management
  • Built-in vulnerability scanning with Trivy
  • Role-based access control and audit logs
  • Secure SSH communication with production

Production Linode Features

  • Docker-based application deployment
  • Optional SSL/TLS certificate management (if domain is provided)
  • Nginx reverse proxy with security headers
  • Automated backups and monitoring
  • Firewall and fail2ban protection

Pipeline Features

  • Automated testing on every code push
  • Automated image building and registry push
  • Automated deployment to production
  • Rollback capability with image versioning
  • Health monitoring and logging

Security Model and User Separation

This setup uses a principle of least privilege approach with separate users for different purposes:

User Roles

  1. Root User

    • Purpose: Initial system setup only
    • SSH Access: Disabled after setup
    • Privileges: Full system access (used only during initial configuration)

  2. Deployment User (DEPLOY_USER)

    • Purpose: SSH access, deployment tasks, system administration
    • SSH Access: Enabled with key-based authentication
    • Privileges: Sudo access for deployment and administrative tasks
    • Examples: deploy, ci, admin

  3. Service Account (SERVICE_USER)

    • Purpose: Running application services (Docker containers, databases)
    • SSH Access: None (no login shell)
    • Privileges: No sudo access, minimal system access
    • Examples: appuser, service, app

Security Benefits

  • No root SSH access: Eliminates the most common attack vector
  • Principle of least privilege: Each user has only the access they need
  • Separation of concerns: Deployment tasks vs. service execution are separate
  • Audit trail: Clear distinction between deployment and service activities
  • Reduced attack surface: Service account has minimal privileges

File Permissions

  • Application files: Owned by SERVICE_USER for security
  • Docker operations: Run by DEPLOY_USER with sudo (deployment only)
  • Service execution: Run by SERVICE_USER (no sudo needed)

Prerequisites and Initial Setup

What's Already Done (Assumptions)

This guide assumes you have already:

  1. Created two Ubuntu 24.04 LTS Linodes with root access
  2. Set root passwords for both Linodes
  3. Have SSH client installed on your local machine
  4. Have Forgejo repository with Actions enabled
  5. Optional: Domain name pointing to Production Linode's IP addresses

Step 0: Initial SSH Access and Verification

Before proceeding with the setup, you need to establish initial SSH access to both Linodes.

0.1 Get Your Linode IP Addresses

From your Linode dashboard, note the IP addresses for:

  • CI/CD Linode: YOUR_CI_CD_IP (IP address only, no domain needed)
  • Production Linode: YOUR_PRODUCTION_IP (IP address for SSH, domain for web access)

0.2 Test Initial SSH Access

Test SSH access to both Linodes:

# Test CI/CD Linode (IP address only)
ssh root@YOUR_CI_CD_IP

# Test Production Linode (IP address only)
ssh root@YOUR_PRODUCTION_IP

Expected output: SSH login prompt asking for root password.

If something goes wrong:

  • Verify the IP addresses are correct
  • Check that SSH is enabled on the Linodes
  • Ensure your local machine can reach the Linodes (no firewall blocking)

0.3 Choose Your Names

Before proceeding, decide on:

  1. Service Account Name: Choose a username for the service account (e.g., appuser, deploy, service)

    • Replace SERVICE_USER in this guide with your chosen name
    • This account runs the actual application services

  2. Deployment User Name: Choose a username for deployment tasks (e.g., deploy, ci, admin)

    • Replace DEPLOY_USER in this guide with your chosen name
    • This account has sudo privileges for deployment tasks

  3. Application Name: Choose a name for your application (e.g., myapp, webapp, api)

    • Replace APP_NAME in this guide with your chosen name

  4. Domain Name (Optional): If you have a domain, note it for SSL configuration

    • Replace your-domain.com in this guide with your actual domain

Example:

  • If you choose appuser as service account, deploy as deployment user, and myapp as application name:
    • Replace all SERVICE_USER with appuser
    • Replace all DEPLOY_USER with deploy
    • Replace all APP_NAME with myapp
    • If you have a domain example.com, replace your-domain.com with example.com

Security Model:

  • Service Account (SERVICE_USER): Runs application services, no sudo access
  • Deployment User (DEPLOY_USER): Handles deployments via SSH, has sudo access
  • Root: Only used for initial setup, then disabled for SSH access

0.4 Set Up SSH Key Authentication for Local Development

Important: This step should be done on both Linodes to enable secure SSH access from your local development machine.

0.4.1 Generate SSH Key on Your Local Machine

On your local development machine, generate an SSH key pair:

# Generate SSH key pair (if you don't already have one)
ssh-keygen -t ed25519 -C "your-email@example.com" -f ~/.ssh/id_ed25519 -N ""

# Or use existing key if you have one
ls ~/.ssh/id_ed25519.pub
0.4.2 Add Your Public Key to Both Linodes

Copy your public key to both Linodes:

# Copy your public key to CI/CD Linode
ssh-copy-id root@YOUR_CI_CD_IP

# Copy your public key to Production Linode
ssh-copy-id root@YOUR_PRODUCTION_IP

Alternative method (if ssh-copy-id doesn't work):

# Copy your public key content
cat ~/.ssh/id_ed25519.pub

# Then manually add to each server
ssh root@YOUR_CI_CD_IP
echo "YOUR_PUBLIC_KEY_CONTENT" >> ~/.ssh/authorized_keys

ssh root@YOUR_PRODUCTION_IP
echo "YOUR_PUBLIC_KEY_CONTENT" >> ~/.ssh/authorized_keys
0.4.3 Test SSH Key Authentication

Test that you can access both servers without passwords:

# Test CI/CD Linode
ssh root@YOUR_CI_CD_IP 'echo "SSH key authentication works for CI/CD"'

# Test Production Linode
ssh root@YOUR_PRODUCTION_IP 'echo "SSH key authentication works for Production"'

Expected output: The echo messages should appear without password prompts.

0.4.4 Create Deployment Users

On both Linodes, create the deployment user with sudo privileges:

# Create deployment user
sudo useradd -m -s /bin/bash DEPLOY_USER
sudo usermod -aG sudo DEPLOY_USER

# Set a secure password (for emergency access only)
echo "DEPLOY_USER:$(openssl rand -base64 32)" | sudo chpasswd

# Copy your SSH key to the deployment user
sudo mkdir -p /home/DEPLOY_USER/.ssh
sudo cp ~/.ssh/authorized_keys /home/DEPLOY_USER/.ssh/
sudo chown -R DEPLOY_USER:DEPLOY_USER /home/DEPLOY_USER/.ssh
sudo chmod 700 /home/DEPLOY_USER/.ssh
sudo chmod 600 /home/DEPLOY_USER/.ssh/authorized_keys

# Configure sudo to use SSH key authentication (most secure)
echo "DEPLOY_USER ALL=(ALL) NOPASSWD:ALL" | sudo tee /etc/sudoers.d/DEPLOY_USER
sudo chmod 440 /etc/sudoers.d/DEPLOY_USER

Security Note: This configuration allows the DEPLOY_USER to use sudo without a password, which is more secure for CI/CD automation since there are no passwords to store or expose. The random password is set for emergency console access only.

0.4.5 Test Sudo Access

Test that the deployment user can use sudo without password prompts:

# Test sudo access
ssh DEPLOY_USER@YOUR_CI_CD_IP 'sudo whoami'
ssh DEPLOY_USER@YOUR_PRODUCTION_IP 'sudo whoami'

Expected output: Both commands should return root without prompting for a password.

0.4.6 Test Deployment User Access

Test that you can access both servers as the deployment user:

# Test CI/CD Linode
ssh DEPLOY_USER@YOUR_CI_CD_IP 'echo "Deployment user SSH access works for CI/CD"'

# Test Production Linode
ssh DEPLOY_USER@YOUR_PRODUCTION_IP 'echo "Deployment user SSH access works for Production"'

Expected output: The echo messages should appear without password prompts.

0.4.7 Create SSH Config for Easy Access

On your local machine, create an SSH config file for easy access:

# Create SSH config
cat > ~/.ssh/config << 'EOF'
Host ci-cd-dev
    HostName YOUR_CI_CD_IP
    User DEPLOY_USER
    IdentityFile ~/.ssh/id_ed25519
    StrictHostKeyChecking no

Host production-dev
    HostName YOUR_PRODUCTION_IP
    User DEPLOY_USER
    IdentityFile ~/.ssh/id_ed25519
    StrictHostKeyChecking no
EOF

chmod 600 ~/.ssh/config

Now you can access servers easily:

ssh ci-cd-dev
ssh production-dev

Part 1: CI/CD Linode Setup

Step 1: Initial System Setup

1.1 Update the System

sudo apt update && sudo apt upgrade -y

What this does: Updates package lists and upgrades all installed packages to their latest versions.

Expected output: A list of packages being updated, followed by completion messages.

1.2 Configure Timezone

# Configure timezone interactively
sudo dpkg-reconfigure tzdata

# Verify timezone setting
date

What this does: Opens an interactive dialog to select your timezone. Navigate through the menus to choose your preferred timezone (e.g., UTC, America/New_York, Europe/London, Asia/Tokyo).

Expected output: After selecting your timezone, the date command should show the current date and time in your selected timezone.

1.3 Configure /etc/hosts

# Add localhost entries for both IPv4 and IPv6
echo "127.0.0.1 localhost" | sudo tee -a /etc/hosts
echo "::1 localhost ip6-localhost ip6-loopback" | sudo tee -a /etc/hosts
echo "YOUR_CI_CD_IPV4_ADDRESS localhost" | sudo tee -a /etc/hosts
echo "YOUR_CI_CD_IPV6_ADDRESS localhost" | sudo tee -a /etc/hosts

# Verify the configuration
cat /etc/hosts

What this does:

  • Adds localhost entries for both IPv4 and IPv6 addresses to /etc/hosts
  • Ensures proper localhost resolution for both IPv4 and IPv6

Important: Replace YOUR_CI_CD_IPV4_ADDRESS and YOUR_CI_CD_IPV6_ADDRESS with the actual IPv4 and IPv6 addresses of your CI/CD Linode obtained from your Linode dashboard.

Expected output: The /etc/hosts file should show entries for 127.0.0.1, ::1, and your Linode's actual IP addresses all mapping to localhost.

1.4 Install Essential Packages

sudo apt install -y \
    curl \
    wget \
    git \
    build-essential \
    pkg-config \
    libssl-dev \
    ca-certificates \
    apt-transport-https \
    software-properties-common \
    apache2-utils

What this does: Installs development tools, SSL libraries, and utilities needed for Docker and application building.

Step 2: Create Users

2.1 Create Service Account

# Create dedicated group for the service account
sudo groupadd -r SERVICE_USER

# Create service account user with dedicated group
sudo useradd -r -g SERVICE_USER -s /bin/bash -m -d /home/SERVICE_USER SERVICE_USER
echo "SERVICE_USER:$(openssl rand -base64 32)" | sudo chpasswd

2.2 Verify Users

sudo su - SERVICE_USER
whoami
pwd
exit

sudo su - DEPLOY_USER
whoami
pwd
exit

Step 3: Clone Repository for Registry Configuration

# Switch to DEPLOY_USER (who has sudo access)
sudo su - DEPLOY_USER

# Create application directory and clone repository
sudo mkdir -p /opt/APP_NAME
sudo chown SERVICE_USER:SERVICE_USER /opt/APP_NAME
cd /opt
sudo git clone https://your-forgejo-instance/your-username/APP_NAME.git
sudo chown -R SERVICE_USER:SERVICE_USER APP_NAME/

# Verify the registry folder exists
ls -la /opt/APP_NAME/registry/

Important: Replace your-forgejo-instance, your-username, and APP_NAME with your actual Forgejo instance URL, username, and application name.

What this does:

  • DEPLOY_USER creates the directory structure and clones the repository
  • SERVICE_USER owns all the files for security
  • Registry configuration files are now available at /opt/APP_NAME/registry/

Step 4: Install Docker

4.1 Add Docker Repository

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt update

4.2 Install Docker Packages

sudo apt install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin

4.3 Configure Docker for Service Account

sudo usermod -aG docker SERVICE_USER

Step 5: Set Up Harbor Container Registry

5.1 Generate SSL Certificates

# Create system SSL directory for Harbor certificates
sudo mkdir -p /etc/ssl/registry

# Get your actual IP address
YOUR_ACTUAL_IP=$(curl -4 -s ifconfig.me)
echo "Your IP address is: $YOUR_ACTUAL_IP"

# Create OpenSSL configuration file with proper SANs
sudo tee /etc/ssl/registry/openssl.conf << EOF
[req]
distinguished_name = req_distinguished_name
req_extensions = v3_req
prompt = no

[req_distinguished_name]
C = US
ST = State
L = City
O = Organization
CN = $YOUR_ACTUAL_IP

[v3_req]
keyUsage = keyEncipherment, dataEncipherment
extendedKeyUsage = serverAuth
subjectAltName = @alt_names

[alt_names]
IP.1 = $YOUR_ACTUAL_IP
DNS.1 = $YOUR_ACTUAL_IP
DNS.2 = localhost
EOF

# Generate self-signed certificate with proper SANs
sudo openssl req -x509 -newkey rsa:4096 -keyout /etc/ssl/registry/registry.key -out /etc/ssl/registry/registry.crt -days 365 -nodes -extensions v3_req -config /etc/ssl/registry/openssl.conf

# Set proper permissions
sudo chmod 600 /etc/ssl/registry/registry.key
sudo chmod 644 /etc/ssl/registry/registry.crt
sudo chmod 644 /etc/ssl/registry/openssl.conf

Important: The certificate is now generated with proper Subject Alternative Names (SANs) including your IP address, which is required for TLS certificate validation by Docker and other clients.

Note: The permissions are set to:

  • registry.key: 600 (owner read/write only) - private key must be secure
  • registry.crt: 644 (owner read/write, group/others read) - certificate can be read by services
  • openssl.conf: 644 (owner read/write, group/others read) - configuration file for reference

5.1.1 Configure Docker to Trust Harbor Registry

# Add the certificate to system CA certificates
sudo cp /etc/ssl/registry/registry.crt /usr/local/share/ca-certificates/registry.crt
sudo update-ca-certificates

# Configure Docker to trust the Harbor registry
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json << EOF
{
  "insecure-registries": ["YOUR_CI_CD_IP"],
  "registry-mirrors": []
}
EOF

# Restart Docker to apply the new configuration
sudo systemctl restart docker

Important: Replace YOUR_CI_CD_IP with your actual CI/CD Linode IP address. This configuration tells Docker to trust your Harbor registry and allows Docker login to work properly.

5.2 Generate Secure Passwords and Secrets

# Set environment variables for Harbor
export HARBOR_HOSTNAME=$YOUR_ACTUAL_IP
export HARBOR_ADMIN_PASSWORD="Harbor12345"

# Generate secure database password for Harbor
export DB_PASSWORD=$(openssl rand -base64 32 | tr -d "=+/" | cut -c1-25)

# Generate secure secrets for Harbor
export CORE_SECRET=$(openssl rand -hex 16)
export JOBSERVICE_SECRET=$(openssl rand -hex 16)

echo "Generated secrets:"
echo "DB_PASSWORD: $DB_PASSWORD"
echo "CORE_SECRET: $CORE_SECRET"
echo "JOBSERVICE_SECRET: $JOBSERVICE_SECRET"

# Save secrets securely for future reference
cat > /opt/APP_NAME/harbor-secrets.txt << EOF
# Harbor Secrets - KEEP THESE SECURE!
# Generated on: $(date)
# CI/CD IP: $YOUR_ACTUAL_IP

HARBOR_HOSTNAME=$HARBOR_HOSTNAME
HARBOR_ADMIN_PASSWORD=$HARBOR_ADMIN_PASSWORD
DB_PASSWORD=$DB_PASSWORD
CORE_SECRET=$CORE_SECRET
JOBSERVICE_SECRET=$JOBSERVICE_SECRET

# IMPORTANT: Store this file securely and keep a backup!
# You will need these secrets for:
# - Harbor upgrades
# - Database troubleshooting
# - Disaster recovery
# - Service restoration
EOF

# Set secure permissions on secrets file
chmod 600 /opt/APP_NAME/harbor-secrets.txt
echo "Secrets saved to /opt/APP_NAME/harbor-secrets.txt"
echo "IMPORTANT: Keep this file secure and backed up!"

Important:

  • Change the default passwords for production use. The default admin password is Harbor12345 - change this immediately after first login.
  • The generated secrets (CORE_SECRET and JOBSERVICE_SECRET) are cryptographically secure random values used for encrypting sensitive data.
  • Store these secrets securely as they will be needed for Harbor upgrades or troubleshooting.
  • CRITICAL: The secrets file contains sensitive information. Keep it secure and backed up!

5.3 Install Harbor Using Official Installer

# Switch to DEPLOY_USER (who has sudo access)
sudo su - DEPLOY_USER

cd /opt/APP_NAME

# Download Harbor 2.10.0 offline installer
sudo wget https://github.com/goharbor/harbor/releases/download/v2.10.0/harbor-offline-installer-v2.10.0.tgz

sudo tar -xzf harbor-offline-installer-v2.10.0.tgz

cd harbor
sudo cp harbor.yml.tmpl harbor.yml

# Edit harbor.yml configuration
sudo nano harbor.yml

Important: In the harbor.yml file, update the following variables:

  • hostname: YOUR_CI_CD_IP (replace with your actual IP)
  • certificate: /etc/ssl/registry/registry.crt
  • private_key: /etc/ssl/registry/registry.key
  • password: <the DB_PASSWORD generated in Step 5.2>

Note: Leave harbor_admin_password as Harbor12345 for now. This will be changed at first login through the UI after launching Harbor.

5.4 Prepare and Install Harbor

# Prepare Harbor configuration
sudo ./prepare

# Install Harbor with Trivy vulnerability scanner
sudo ./install.sh --with-trivy

cd ..

# Change harbor folder permissions recursively to SERVICE_USER
sudo chown -R SERVICE_USER:SERVICE_USER harbor

# Switch to SERVICE_USER to run installation again as non-root
sudo su - SERVICE_USER

cd /opt/APP_NAME/harbor

# Install Harbor as SERVICE_USER (permissions are partially adjusted correctly)
./install.sh --with-trivy

# Exit SERVICE_USER shell
exit

5.5 Fix Permission Issues

# Switch back to DEPLOY_USER to adjust the permissions for various env files
cd /opt/APP_NAME/harbor

sudo chown SERVICE_USER:SERVICE_USER common/config/jobservice/env
sudo chown SERVICE_USER:SERVICE_USER common/config/db/env
sudo chown SERVICE_USER:SERVICE_USER common/config/registryctl/env
sudo chown SERVICE_USER:SERVICE_USER common/config/trivy-adapter/env
sudo chown SERVICE_USER:SERVICE_USER common/config/core/env

# Exit DEPLOY_USER shell
exit

5.6 Test Harbor Installation

# Switch to SERVICE_USER
sudo su - SERVICE_USER

cd /opt/APP_NAME/harbor

# Verify you can stop Harbor. All Harbor containers should stop.
docker compose down

# Verify you can bring Harbor back up. All Harbor containers should start back up.
docker compose up -d

# Exit SERVICE_USER shell
exit

Important: Harbor startup can take 2-3 minutes as it initializes the database and downloads vulnerability databases. The health check will ensure all services are running properly.

5.7 Wait for Harbor Startup

# Monitor Harbor startup progress
cd /opt/APP_NAME/harbor
docker compose logs -f

Expected output: You should see logs from all Harbor services (core, database, redis, registry, portal, nginx, jobservice, trivy) starting up. Wait until you see "Harbor has been installed and started successfully" or similar success messages.

5.8 Test Harbor Setup

# Check if all Harbor containers are running
cd /opt/APP_NAME/harbor
docker compose ps

# Test Harbor API (HTTPS)
curl -k https://localhost/api/v2.0/health

# Test Harbor UI (HTTPS)
curl -k -I https://localhost

# Expected output: HTTP/1.1 200 OK

Important: All Harbor services should show as "Up" in the docker compose ps output. The health check should return a JSON response indicating all services are healthy.

5.9 Access Harbor Web UI

  1. Open your browser and navigate to: https://YOUR_CI_CD_IP
  2. Login with default credentials:
    • Username: admin
    • Password: Harbor12345 (or your configured password)
  3. Change the admin password:
    • Click on the user icon "admin" in the top right corner of the UI
    • Click "Change Password" from the dropdown menu
    • Enter your current password and a new secure password
    • Click "OK" to save the new password

5.10 Configure Harbor for Public Read, Authenticated Write

  1. Create Application Project:

    • Go to Projects → New Project
    • Set Project Name: APP_NAME (replace with your actual application name)
    • Set Access Level: Public
    • Click OK

  2. Create a User for CI/CD:

    • Go to Administration → Users → New User
    • Set Username: ci-user
    • Set Email: ci@example.com
    • Set Password: your-secure-password
    • Click OK

  3. Assign Project Role to ci-user:

    • Go to Projects → APP_NAME → Members → + User
    • Select User: ci-user
    • Set Role: Developer
    • Click OK

Note: With a public project, anyone can pull images without authentication, but only authenticated users (like ci-user) can push images. This provides the perfect balance of ease of use for deployments and security for image management.

5.11 Test Harbor Authentication and Access Model

# Test Docker login to Harbor
docker login YOUR_CI_CD_IP
# Enter: ci-user and your-secure-password

# Create a test image
echo "FROM alpine:latest" > /tmp/test.Dockerfile
echo "RUN echo 'Hello from Harbor test image'" >> /tmp/test.Dockerfile

# Build and tag test image for APP_NAME project
docker build -f /tmp/test.Dockerfile -t YOUR_CI_CD_IP/APP_NAME/test:latest /tmp

# Push to Harbor (requires authentication)
docker push YOUR_CI_CD_IP/APP_NAME/test:latest

# Test public pull (no authentication required)
docker logout YOUR_CI_CD_IP
docker pull YOUR_CI_CD_IP/APP_NAME/test:latest

# Verify the image was pulled successfully
docker images | grep APP_NAME/test

# Test that unauthorized push is blocked
echo "FROM alpine:latest" > /tmp/unauthorized.Dockerfile
echo "RUN echo 'This push should fail'" >> /tmp/unauthorized.Dockerfile
docker build -f /tmp/unauthorized.Dockerfile -t YOUR_CI_CD_IP/APP_NAME/unauthorized:latest /tmp
docker push YOUR_CI_CD_IP/APP_NAME/unauthorized:latest
# Expected: This should fail with authentication error

# Clean up test images
docker rmi YOUR_CI_CD_IP/APP_NAME/test:latest
docker rmi YOUR_CI_CD_IP/APP_NAME/unauthorized:latest

Expected behavior:

  • ✅ Push requires authentication: docker push only works when logged in
  • ✅ Pull works without authentication: docker pull works without login for public projects
  • ✅ Unauthorized push is blocked: docker push fails when not logged in
  • ✅ Web UI accessible: Harbor UI is available at https://YOUR_CI_CD_IP

5.12 Harbor Access Model Summary

Your Harbor registry is now configured with the following access model:

APP_NAME Project:

  • ✅ Pull (read): No authentication required
  • ✅ Push (write): Requires authentication
  • ✅ Web UI: Accessible to view images

Security Features:

  • ✅ Vulnerability scanning: Automatic CVE scanning with Trivy
  • ✅ Role-based access control: Different user roles (admin, developer, guest)
  • ✅ Audit logs: Complete trail of all operations

5.13 Troubleshooting Common Harbor Issues

Certificate Issues:

# If you get "tls: failed to verify certificate" errors:
# 1. Verify certificate has proper SANs
openssl x509 -in /etc/ssl/registry/registry.crt -text -noout | grep -A 5 "Subject Alternative Name"

# 2. Regenerate certificate if SANs are missing
sudo openssl req -x509 -newkey rsa:4096 -keyout /etc/ssl/registry/registry.key -out /etc/ssl/registry/registry.crt -days 365 -nodes -extensions v3_req -config /etc/ssl/registry/openssl.conf

# 3. Restart Harbor and Docker
cd /opt/APP_NAME/harbor && docker compose down && docker compose up -d
sudo systemctl restart docker

Connection Issues:

# If you get "connection refused" errors:
# 1. Check if Harbor is running
docker compose ps

# 2. Check Harbor logs
docker compose logs

# 3. Verify ports are open
netstat -tuln | grep -E ':(80|443)'

Docker Configuration Issues:

# If Docker still can't connect after certificate fixes:
# 1. Verify Docker daemon configuration
cat /etc/docker/daemon.json

# 2. Check if certificate is in system CA store
ls -la /usr/local/share/ca-certificates/registry.crt

# 3. Update CA certificates and restart Docker
sudo update-ca-certificates
sudo systemctl restart docker

Step 6: Set Up SSH for Production Communication

6.1 Generate SSH Key Pair

Important: Run this command as the DEPLOY_USER (not root or SERVICE_USER). The DEPLOY_USER is responsible for deployment orchestration and SSH communication with the production server.

ssh-keygen -t ed25519 -C "ci-cd-server" -f ~/.ssh/id_ed25519 -N ""

What this does:

  • Creates an SSH key pair for secure communication between CI/CD and production servers
  • The DEPLOY_USER uses this key to SSH to the production server for deployments
  • The key is stored in the DEPLOY_USER's home directory for security

Security Note: The DEPLOY_USER handles deployment orchestration, while the SERVICE_USER runs the actual CI pipeline. This separation provides better security through the principle of least privilege.

6.2 Create SSH Config

cat > ~/.ssh/config << 'EOF'
Host production
    HostName YOUR_PRODUCTION_IP
    User DEPLOY_USER
    IdentityFile ~/.ssh/id_ed25519
    StrictHostKeyChecking no
    UserKnownHostsFile /dev/null
EOF

chmod 600 ~/.ssh/config

Step 7: Install Forgejo Actions Runner

7.1 Download Runner

cd ~
wget https://code.forgejo.org/forgejo/runner/releases/download/v0.2.11/forgejo-runner-0.2.11-linux-amd64
chmod +x forgejo-runner-0.2.11-linux-amd64
sudo mv forgejo-runner-0.2.11-linux-amd64 /usr/local/bin/forgejo-runner

7.2 Create Systemd Service

sudo tee /etc/systemd/system/forgejo-runner.service > /dev/null << 'EOF'
[Unit]
Description=Forgejo Actions Runner
After=network.target

[Service]
Type=simple
User=SERVICE_USER
WorkingDirectory=/home/SERVICE_USER
ExecStart=/usr/local/bin/forgejo-runner daemon
Restart=always
RestartSec=10

[Install]
WantedBy=multi-user.target
EOF

7.3 Enable Service

sudo systemctl daemon-reload
sudo systemctl enable forgejo-runner.service

7.4 Test Runner Configuration

# Check if the runner is running
sudo systemctl status forgejo-runner.service

# Check runner logs
sudo journalctl -u forgejo-runner.service -f --no-pager

# Test runner connectivity (in a separate terminal)
forgejo-runner list

# Verify runner appears in Forgejo
# Go to your Forgejo repository → Settings → Actions → Runners
# You should see your runner listed as "ci-cd-runner" with status "Online"

Expected Output:

  • systemctl status should show "active (running)"
  • forgejo-runner list should show your runner
  • Forgejo web interface should show the runner as online

If something goes wrong:

  • Check logs: sudo journalctl -u forgejo-runner.service -f
  • Verify token: Make sure the registration token is correct
  • Check network: Ensure the runner can reach your Forgejo instance
  • Restart service: sudo systemctl restart forgejo-runner.service

Step 8: Set Up Monitoring and Cleanup

8.1 Monitoring Script

Important: The repository includes a pre-configured monitoring script in the scripts/ directory that can be used for both CI/CD and production monitoring.

Repository Script:

  • scripts/monitor.sh - Comprehensive monitoring script with support for both CI/CD and production environments

To use the repository monitoring script:

# The repository is already cloned at /opt/APP_NAME/
cd /opt/APP_NAME

# Make the script executable
chmod +x scripts/monitor.sh

# Test CI/CD monitoring
./scripts/monitor.sh --type ci-cd

# Test production monitoring (if you have a production setup)
./scripts/monitor.sh --type production

Note: The repository script is more comprehensive and includes proper error handling, colored output, and support for both CI/CD and production environments. It automatically detects the environment and provides appropriate monitoring information.

8.2 Cleanup Script

Important: The repository includes a pre-configured cleanup script in the scripts/ directory that can be used for both CI/CD and production cleanup operations.

Repository Script:

  • scripts/cleanup.sh - Comprehensive cleanup script with support for both CI/CD and production environments

To use the repository cleanup script:

# The repository is already cloned at /opt/APP_NAME/
cd /opt/APP_NAME

# Make the script executable
chmod +x scripts/cleanup.sh

# Test CI/CD cleanup (dry run first)
./scripts/cleanup.sh --type ci-cd --dry-run

# Run CI/CD cleanup
./scripts/cleanup.sh --type ci-cd

# Test production cleanup (dry run first)
./scripts/cleanup.sh --type production --dry-run

Note: The repository script is more comprehensive and includes proper error handling, colored output, dry-run mode, and support for both CI/CD and production environments. It automatically detects the environment and provides appropriate cleanup operations.

8.3 Test Cleanup Script

# Create some test images to clean up
docker pull alpine:latest
docker pull nginx:latest
docker tag alpine:latest test-cleanup:latest
docker tag nginx:latest test-cleanup2:latest

# Test cleanup with dry run first
./scripts/cleanup.sh --type ci-cd --dry-run

# Run the cleanup script
./scripts/cleanup.sh --type ci-cd

# Verify cleanup worked
echo "Checking remaining images:"
docker images --format "table {{.Repository}}\t{{.Tag}}\t{{.Size}}"

echo "Checking remaining volumes:"
docker volume ls

echo "Checking remaining networks:"
docker network ls

Expected Output:

  • Cleanup script should run without errors
  • Test images should be removed
  • System should report cleanup completion
  • Remaining images should be minimal (only actively used ones)

If something goes wrong:

  • Check script permissions: ls -la scripts/cleanup.sh
  • Verify Docker access: docker ps
  • Check registry access: cd /opt/APP_NAME/registry && docker compose ps
  • Run manually: bash -x scripts/cleanup.sh

8.4 Set Up Automated Cleanup

# Create a cron job to run cleanup daily at 3 AM using the repository script
(crontab -l 2>/dev/null; echo "0 3 * * * cd /opt/APP_NAME && ./scripts/cleanup.sh --type ci-cd >> /tmp/cleanup.log 2>&1") | crontab -

# Verify the cron job was added
crontab -l

What this does:

  • Runs automatically: The cleanup script runs every day at 3:00 AM
  • Frequency: Daily cleanup to prevent disk space issues
  • Logging: All cleanup output is logged to /tmp/cleanup.log
  • What it cleans: Unused Docker images, volumes, networks, and Harbor images

Step 9: Configure Firewall

sudo ufw --force enable
sudo ufw default deny incoming
sudo ufw default allow outgoing
sudo ufw allow ssh
sudo ufw allow 443/tcp  # Harbor registry (public read access)

Security Model:

  • Port 443 (Harbor): Public read access for public projects, authenticated write access
  • SSH: Restricted to your IP addresses
  • All other ports: Blocked

Step 10: Test CI/CD Setup

10.1 Test Docker Installation

docker --version
docker compose --version

10.2 Check Harbor Status

cd /opt/APP_NAME/registry
docker compose ps

10.3 Test Harbor Access

# Test Harbor API
curl -k https://localhost:8080/api/v2.0/health

# Test Harbor UI
curl -k -I https://localhost

10.4 Get Public Key for Production Server

cat ~/.ssh/id_ed25519.pub

Important: Copy this public key - you'll need it for the production server setup.

Part 2: Production Linode Setup

Step 11: Initial System Setup

11.1 Update the System

sudo apt update && sudo apt upgrade -y

11.2 Configure Timezone

# Configure timezone interactively
sudo dpkg-reconfigure tzdata

# Verify timezone setting
date

What this does: Opens an interactive dialog to select your timezone. Navigate through the menus to choose your preferred timezone (e.g., UTC, America/New_York, Europe/London, Asia/Tokyo).

Expected output: After selecting your timezone, the date command should show the current date and time in your selected timezone.

11.3 Configure /etc/hosts

# Add localhost entries for both IPv4 and IPv6
echo "127.0.0.1 localhost" | sudo tee -a /etc/hosts
echo "::1 localhost ip6-localhost ip6-loopback" | sudo tee -a /etc/hosts
echo "YOUR_PRODUCTION_IPV4_ADDRESS localhost" | sudo tee -a /etc/hosts
echo "YOUR_PRODUCTION_IPV6_ADDRESS localhost" | sudo tee -a /etc/hosts

# Verify the configuration
cat /etc/hosts

What this does:

  • Adds localhost entries for both IPv4 and IPv6 addresses to /etc/hosts
  • Ensures proper localhost resolution for both IPv4 and IPv6

Important: Replace YOUR_PRODUCTION_IPV4_ADDRESS and YOUR_PRODUCTION_IPV6_ADDRESS with the actual IPv4 and IPv6 addresses of your Production Linode obtained from your Linode dashboard.

Expected output: The /etc/hosts file should show entries for 127.0.0.1, ::1, and your Linode's actual IP addresses all mapping to localhost.

11.4 Install Essential Packages

sudo apt install -y \
    curl \
    wget \
    git \
    ca-certificates \
    apt-transport-https \
    software-properties-common \
    ufw \
    fail2ban \
    htop \
    nginx \
    certbot \
    python3-certbot-nginx

Step 12: Create Users

12.1 Create the SERVICE_USER User

# Create dedicated group for the service account
sudo groupadd -r SERVICE_USER

# Create service account user with dedicated group
sudo useradd -r -g SERVICE_USER -s /bin/bash -m -d /home/SERVICE_USER SERVICE_USER
echo "SERVICE_USER:$(openssl rand -base64 32)" | sudo chpasswd

12.2 Create the DEPLOY_USER User

# Create deployment user
sudo useradd -m -s /bin/bash DEPLOY_USER
sudo usermod -aG sudo DEPLOY_USER
echo "DEPLOY_USER:$(openssl rand -base64 32)" | sudo chpasswd

12.3 Verify Users

sudo su - SERVICE_USER
whoami
pwd
exit

sudo su - DEPLOY_USER
whoami
pwd
exit

Step 13: Install Docker

13.1 Add Docker Repository

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo gpg --dearmor -o /usr/share/keyrings/docker-archive-keyring.gpg
echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/docker-archive-keyring.gpg] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable" | sudo tee /etc/apt/sources.list.d/docker.list > /dev/null
sudo apt update

13.2 Install Docker Packages

sudo apt install -y docker-ce docker-ce-cli containerd.io docker-compose-plugin

13.3 Configure Docker for Service Account

sudo usermod -aG docker SERVICE_USER

Step 14: Install Docker Compose

sudo curl -L "https://github.com/docker/compose/releases/latest/download/docker-compose-$(uname -s)-$(uname -m)" -o /usr/local/bin/docker-compose
sudo chmod +x /usr/local/bin/docker-compose

Step 15: Configure Security

15.1 Configure Firewall

sudo ufw --force enable
sudo ufw default deny incoming
sudo ufw default allow outgoing
sudo ufw allow ssh
sudo ufw allow 80/tcp
sudo ufw allow 443/tcp
sudo ufw allow 3000/tcp
sudo ufw allow 3001/tcp

15.2 Configure Fail2ban

sudo systemctl enable fail2ban
sudo systemctl start fail2ban

Step 16: Create Application Directory

16.1 Create Directory Structure

sudo mkdir -p /opt/APP_NAME
sudo chown SERVICE_USER:SERVICE_USER /opt/APP_NAME

Note: Replace APP_NAME with your actual application name. This directory name can be controlled via the APP_NAME secret in your Forgejo repository settings. If you set the APP_NAME secret to myapp, the deployment directory will be /opt/myapp.

16.2 Create SSL Directory (Optional - for domain users)

sudo mkdir -p /opt/APP_NAME/nginx/ssl
sudo chown SERVICE_USER:SERVICE_USER /opt/APP_NAME/nginx/ssl

Step 17: Clone Repository and Set Up Application Files

17.1 Switch to SERVICE_USER User

sudo su - SERVICE_USER

17.2 Clone Repository

cd /opt/APP_NAME
git clone https://your-forgejo-instance/your-username/APP_NAME.git .

Important: The repository includes a pre-configured nginx/nginx.conf file that handles both SSL and non-SSL scenarios, with proper security headers, rate limiting, and CORS configuration. This file will be automatically used by the Docker Compose setup.

Important: The repository also includes a pre-configured .forgejo/workflows/ci.yml file that handles the complete CI/CD pipeline including testing, building, and deployment. This workflow is already set up to work with the private registry and production deployment.

Note: Replace your-forgejo-instance and your-username/APP_NAME with your actual Forgejo instance URL and repository path.

17.3 Create Environment File

The repository doesn't include a .env.example file for security reasons. The CI/CD pipeline will create the .env file dynamically during deployment. However, for manual testing or initial setup, you can create a basic .env file:

cat > /opt/APP_NAME/.env << 'EOF'
# Production Environment Variables
POSTGRES_PASSWORD=your_secure_password_here
REGISTRY=YOUR_CI_CD_IP:8080
IMAGE_NAME=APP_NAME
IMAGE_TAG=latest

# Database Configuration
POSTGRES_DB=sharenet
POSTGRES_USER=sharenet
DATABASE_URL=postgresql://sharenet:your_secure_password_here@postgres:5432/sharenet

# Application Configuration
NODE_ENV=production
RUST_LOG=info
RUST_BACKTRACE=1
EOF

Important: Replace YOUR_CI_CD_IP with your actual CI/CD Linode IP address and your_secure_password_here with a strong password.

17.4 Configure Docker for Harbor Access

# Add the CI/CD Harbor registry to Docker's insecure registries
sudo mkdir -p /etc/docker
sudo tee /etc/docker/daemon.json << EOF
{
  "insecure-registries": ["YOUR_CI_CD_IP:8080"]
}
EOF

# Restart Docker to apply changes
sudo systemctl restart docker

Important: Replace YOUR_CI_CD_IP with your actual CI/CD Linode IP address.

Step 18: Set Up SSH Key Authentication

18.1 Add CI/CD Public Key

# Create .ssh directory for SERVICE_USER
mkdir -p ~/.ssh
chmod 700 ~/.ssh

# Add the CI/CD public key (copy from CI/CD Linode)
echo "YOUR_CI_CD_PUBLIC_KEY" >> ~/.ssh/authorized_keys
chmod 600 ~/.ssh/authorized_keys

Important: Replace YOUR_CI_CD_PUBLIC_KEY with the public key from the CI/CD Linode (the output from cat ~/.ssh/id_ed25519.pub on the CI/CD Linode).

18.2 Test SSH Connection

From the CI/CD Linode, test the SSH connection:

ssh production

Expected output: You should be able to SSH to the production server without a password prompt.

Step 19: Test Production Setup

19.1 Test Docker Installation

docker --version
docker compose --version

19.2 Test Harbor Access

# Test pulling an image from the CI/CD Harbor registry
docker pull YOUR_CI_CD_IP:8080/public/backend:latest

Important: Replace YOUR_CI_CD_IP with your actual CI/CD Linode IP address.

19.3 Test Application Deployment

cd /opt/APP_NAME
docker compose up -d

19.4 Verify Application Status

docker compose ps
curl http://localhost:3000
curl http://localhost:3001/health

Expected Output:

  • All containers should be running
  • Frontend should be accessible on port 3000
  • Backend health check should return 200 OK

Part 3: Final Configuration and Testing

Step 20: Configure Forgejo Repository Secrets

20.1 Required Repository Secrets

Go to your Forgejo repository and add these secrets in Settings → Secrets and Variables → Actions:

Required Secrets:

  • CI_CD_IP: Your CI/CD Linode IP address
  • PRODUCTION_IP: Your Production Linode IP address
  • DEPLOY_USER: The deployment user name (e.g., deploy, ci, admin)
  • SERVICE_USER: The service user name (e.g., appuser, service, app)
  • APP_NAME: Your application name (e.g., sharenet, myapp)
  • POSTGRES_PASSWORD: A strong password for the PostgreSQL database

Optional Secrets (for domain users):

  • DOMAIN: Your domain name (e.g., example.com)
  • EMAIL: Your email for SSL certificate notifications

20.2 Configure Forgejo Actions Runner

20.2.1 Get Runner Token
  1. Go to your Forgejo repository
  2. Navigate to Settings → Actions → Runners
  3. Click "New runner"
  4. Copy the registration token
20.2.2 Configure Runner
# Switch to DEPLOY_USER on CI/CD Linode
sudo su - DEPLOY_USER

# Get the registration token from your Forgejo repository
# Go to Settings → Actions → Runners → New runner
# Copy the registration token

# Configure the runner
forgejo-runner register \
  --instance https://your-forgejo-instance \
  --token YOUR_TOKEN \
  --name "ci-cd-runner" \
  --labels "ubuntu-latest,docker" \
  --no-interactive
20.2.3 Start Runner
sudo systemctl start forgejo-runner.service
sudo systemctl status forgejo-runner.service
20.2.4 Test Runner Configuration
# Check if the runner is running
sudo systemctl status forgejo-runner.service

# Check runner logs
sudo journalctl -u forgejo-runner.service -f --no-pager

# Test runner connectivity (in a separate terminal)
forgejo-runner list

# Verify runner appears in Forgejo
# Go to your Forgejo repository → Settings → Actions → Runners
# You should see your runner listed as "ci-cd-runner" with status "Online"

Expected Output:

  • systemctl status should show "active (running)"
  • forgejo-runner list should show your runner
  • Forgejo web interface should show the runner as online

If something goes wrong:

  • Check logs: sudo journalctl -u forgejo-runner.service -f
  • Verify token: Make sure the registration token is correct
  • Check network: Ensure the runner can reach your Forgejo instance
  • Restart service: sudo systemctl restart forgejo-runner.service

Step 21: Set Up Monitoring and Cleanup

21.1 Monitoring Script

Important: The repository includes a pre-configured monitoring script in the scripts/ directory that can be used for both CI/CD and production monitoring.

Repository Script:

  • scripts/monitor.sh - Comprehensive monitoring script with support for both CI/CD and production environments

To use the repository monitoring script:

# The repository is already cloned at /opt/APP_NAME/
cd /opt/APP_NAME

# Make the script executable
chmod +x scripts/monitor.sh

# Test CI/CD monitoring
./scripts/monitor.sh --type ci-cd

# Test production monitoring (if you have a production setup)
./scripts/monitor.sh --type production

Note: The repository script is more comprehensive and includes proper error handling, colored output, and support for both CI/CD and production environments. It automatically detects the environment and provides appropriate monitoring information.

21.2 Cleanup Script

Important: The repository includes a pre-configured cleanup script in the scripts/ directory that can be used for both CI/CD and production cleanup operations.

Repository Script:

  • scripts/cleanup.sh - Comprehensive cleanup script with support for both CI/CD and production environments

To use the repository cleanup script:

# The repository is already cloned at /opt/APP_NAME/
cd /opt/APP_NAME

# Make the script executable
chmod +x scripts/cleanup.sh

# Test CI/CD cleanup (dry run first)
./scripts/cleanup.sh --type ci-cd --dry-run

# Run CI/CD cleanup
./scripts/cleanup.sh --type ci-cd

# Test production cleanup (dry run first)
./scripts/cleanup.sh --type production --dry-run

Note: The repository script is more comprehensive and includes proper error handling, colored output, dry-run mode, and support for both CI/CD and production environments. It automatically detects the environment and provides appropriate cleanup operations.

21.3 Test Cleanup Script

# Create some test images to clean up
docker pull alpine:latest
docker pull nginx:latest
docker tag alpine:latest test-cleanup:latest
docker tag nginx:latest test-cleanup2:latest

# Test cleanup with dry run first
./scripts/cleanup.sh --type ci-cd --dry-run

# Run the cleanup script
./scripts/cleanup.sh --type ci-cd

# Verify cleanup worked
echo "Checking remaining images:"
docker images --format "table {{.Repository}}\t{{.Tag}}\t{{.Size}}"

echo "Checking remaining volumes:"
docker volume ls

echo "Checking remaining networks:"
docker network ls

Expected Output:

  • Cleanup script should run without errors
  • Test images should be removed
  • System should report cleanup completion
  • Remaining images should be minimal (only actively used ones)

If something goes wrong:

  • Check script permissions: ls -la scripts/cleanup.sh
  • Verify Docker access: docker ps
  • Check registry access: cd /opt/APP_NAME/registry && docker compose ps
  • Run manually: bash -x scripts/cleanup.sh

21.4 Set Up Automated Cleanup

# Create a cron job to run cleanup daily at 3 AM using the repository script
(crontab -l 2>/dev/null; echo "0 3 * * * cd /opt/APP_NAME && ./scripts/cleanup.sh --type ci-cd >> /tmp/cleanup.log 2>&1") | crontab -

# Verify the cron job was added
crontab -l

What this does:

  • Runs automatically: The cleanup script runs every day at 3:00 AM
  • Frequency: Daily cleanup to prevent disk space issues
  • Logging: All cleanup output is logged to /tmp/cleanup.log
  • What it cleans: Unused Docker images, volumes, networks, and Harbor images

Step 22: Test Complete Pipeline

22.1 Trigger a Test Build

  1. Make a small change to your repository (e.g., update a comment or add a test file)
  2. Commit and push the changes to trigger the CI/CD pipeline
  3. Monitor the build in your Forgejo repository → Actions tab

22.2 Verify Pipeline Steps

The pipeline should execute these steps in order:

  1. Checkout: Clone the repository
  2. Test Backend: Run backend tests
  3. Test Frontend: Run frontend tests
  4. Build Backend: Build backend Docker image
  5. Build Frontend: Build frontend Docker image
  6. Push to Registry: Push images to your private registry
  7. Deploy to Production: Deploy to production server

22.3 Check Harbor

# On CI/CD Linode
cd /opt/APP_NAME/registry

# Check if new images were pushed
curl -k https://localhost:8080/v2/_catalog

# Check specific repository tags
curl -k https://localhost:8080/v2/public/backend/tags/list
curl -k https://localhost:8080/v2/public/frontend/tags/list

22.4 Verify Production Deployment

# On Production Linode
cd /opt/APP_NAME

# Check if containers are running with new images
docker compose ps

# Check application health
curl http://localhost:3000
curl http://localhost:3001/health

# Check container logs for any errors
docker compose logs backend
docker compose logs frontend

22.5 Test Application Functionality

  1. Frontend: Visit your production URL (IP or domain)
  2. Backend API: Test API endpoints
  3. Database: Verify database connections
  4. Logs: Check for any errors in application logs

Step 23: Set Up SSL/TLS (Optional - Domain Users)

23.1 Install SSL Certificate

If you have a domain pointing to your Production Linode:

# On Production Linode
sudo certbot --nginx -d your-domain.com

# Verify certificate
sudo certbot certificates

23.2 Configure Auto-Renewal

# Test auto-renewal
sudo certbot renew --dry-run

# Add to crontab for automatic renewal
sudo crontab -e
# Add this line:
# 0 12 * * * /usr/bin/certbot renew --quiet

Step 24: Final Verification

24.1 Security Check

# Check firewall status
sudo ufw status

# Check fail2ban status
sudo systemctl status fail2ban

# Check SSH access (should be key-based only)
sudo grep "PasswordAuthentication" /etc/ssh/sshd_config

24.2 Performance Check

# Check system resources
htop

# Check disk usage
df -h

# Check Docker disk usage
docker system df

24.3 Backup Verification

# Test backup script
cd /opt/APP_NAME
./scripts/backup.sh --dry-run

# Run actual backup
./scripts/backup.sh

Step 25: Documentation and Maintenance

25.1 Update Documentation

  1. Update README.md with deployment information
  2. Document environment variables and their purposes
  3. Create troubleshooting guide for common issues
  4. Document backup and restore procedures

25.2 Set Up Monitoring Alerts

# Set up monitoring cron job
(crontab -l 2>/dev/null; echo "*/5 * * * * cd /opt/APP_NAME && ./scripts/monitor.sh --type production >> /tmp/monitor.log 2>&1") | crontab -

# Check monitoring logs
tail -f /tmp/monitor.log

25.3 Regular Maintenance Tasks

Daily:

  • Check application logs for errors
  • Monitor system resources
  • Verify backup completion

Weekly:

  • Review security logs
  • Update system packages
  • Test backup restoration

Monthly:

  • Review and rotate logs
  • Update SSL certificates
  • Review and update documentation

🎉 Congratulations!

You have successfully set up a complete CI/CD pipeline with:

  • ✅ Automated testing on every code push
  • ✅ Docker image building and Harbor registry storage
  • ✅ Automated deployment to production
  • ✅ Health monitoring and logging
  • ✅ Backup and cleanup automation
  • ✅ Security hardening with proper user separation
  • ✅ SSL/TLS support for production (optional)

Your application is now ready for continuous deployment with proper security, monitoring, and maintenance procedures in place!