Implementation Blueprint

Prerequisites

sudo apt update && sudo apt upgrade -y
sudo apt install docker.io docker-compose -y
sudo systemctl enable docker
sudo systemctl start docker

Docker Compose Production Setup

version: '3'

services:
  redmine:
    image: redmine:latest
    ports:
      - "3000:3000"
    environment:
      - REDMINE_DB_POSTGRES=db
      - REDMINE_DB_USERNAME=redmine
      - REDMINE_DB_PASSWORD=password
    depends_on:
      - db
    volumes:
      - redmine_data:/usr/src/redmine/files
    restart: always

  db:
    image: postgres:15-alpine
    environment:
      - POSTGRES_USER=redmine
      - POSTGRES_PASSWORD=password
      - POSTGRES_DB=redmine
    volumes:
      - pg_data:/var/lib/postgresql/data
    restart: always

volumes:
  redmine_data:
  pg_data:

Kubernetes Production Deployment (Recommended)

# Deploy app and db as separate components
kubectl create deployment redmine --image=redmine:latest
kubectl expose deployment redmine --port=3000

• Stateful Management: Use PersistentVolumeClaims to manage your PostgreSQL store and project file attachments.
• Load Balancing: Automatically distribute traffic across multiple Redmine pods during periods of high engagement.
• Secure Persistence: Use Kubernetes Secrets to manage your SCM credentials and database access tokens.

Scaling & Performance

• Database Performance: For large-scale multi-project environments, use a managed database instance and ensure proper indexing for issue search.
• SCM Polling: Configure background workers to handle SCM repository polling to ensure it doesn't impact web performance.
• Attachment Storage: Use shared persistent volumes or object storage for attachments to ensure they are accessible across all pods.
• Plugin Management: Be selective with plugins; ensure they are regularly maintained to prevent performance degradation or security risks.

Backup & Safety

• Database Snapshots: Automate daily PostgreSQL backups and store them offsite securely.
• Volume Backups: Regularly backup the persistent volumes containing project files and configurations.
• Security Updates: Monitor Redmine's official site for updates and security patches.
• HTTPS Everywhere: Always run Redmine behind a secure reverse proxy with SSL/TLS enabled to protect project data and user credentials.
• File Permissions: Ensure that Redmine's dynamic file storage directories have the correct restrictive permissions at the OS level.