WordPress

WordPress Deployment

Overview

Learn how to deploy WordPress on Docker Swarm for the Sravz blog and content management. This section covers containerized WordPress deployment with high availability, load balancing, and persistent storage.

What You’ll Learn

  • WordPress Containerization: Docker-based WordPress setup
  • Swarm Deployment: Multi-node WordPress deployment
  • High Availability: Replicated services for uptime
  • Persistent Storage: Volume management for uploads and database
  • Load Balancing: Distribute traffic across replicas
  • SSL/TLS: Secure WordPress with Let’s Encrypt

Key Technologies

  • WordPress: Content management system
  • Docker Swarm: Container orchestration
  • MySQL/MariaDB: Database backend
  • Nginx/Apache: Web server
  • Traefik: Reverse proxy and load balancer
  • Let’s Encrypt: Free SSL certificates

Documentation Index

  1. WordPress Docker Swarm Deployment - Deploy WordPress on Docker Swarm with HA and persistence

Use Cases

Sravz Blog

  • Financial Analysis: Publish market insights
  • Tech Blog: Document technical implementations
  • Product Updates: Announce new features
  • Educational Content: Share trading strategies

Content Management

  • Landing Pages: Marketing and product pages
  • Documentation: User guides and tutorials
  • Newsletter: Email list management
  • SEO: Search engine optimization

Architecture

Single-Node Setup

Internet → Traefik → WordPress Container → MySQL Container
                          ↓
                    Persistent Volumes

Multi-Node Swarm

Internet → Load Balancer (Traefik)
              ↓
    ┌─────────┼─────────┐
    ↓         ↓         ↓
WP Node 1  WP Node 2  WP Node 3
    ↓         ↓         ↓
    └─────────┼─────────┘
              ↓
         MySQL (Leader)
              ↓
      Persistent Storage

Deployment Features

High Availability

  • Service Replication: 3+ WordPress containers
  • Load Balancing: Round-robin across replicas
  • Health Checks: Auto-restart failed containers
  • Rolling Updates: Zero-downtime deployments

Persistence

  • WordPress Files: Shared volume for uploads/plugins
  • MySQL Data: Persistent database storage
  • Backups: Automated backup to S3
  • Disaster Recovery: Quick restore capability

Security

  • SSL/TLS: HTTPS with Let’s Encrypt
  • Firewall: Network policies and port restrictions
  • Secret Management: Docker secrets for credentials
  • Updates: Automated security patches

Docker Compose Example

version: '3.8'
services:
  wordpress:
    image: wordpress:latest
    deploy:
      replicas: 3
      update_config:
        parallelism: 1
        delay: 10s
    environment:
      WORDPRESS_DB_HOST: mysql
      WORDPRESS_DB_NAME: wordpress
      WORDPRESS_DB_USER: wp_user
      WORDPRESS_DB_PASSWORD_FILE: /run/secrets/wp_db_password
    volumes:
      - wordpress_data:/var/www/html
    secrets:
      - wp_db_password
    networks:
      - webnet

  mysql:
    image: mysql:8.0
    environment:
      MYSQL_ROOT_PASSWORD_FILE: /run/secrets/mysql_root_password
      MYSQL_DATABASE: wordpress
    volumes:
      - mysql_data:/var/lib/mysql
    secrets:
      - mysql_root_password
    networks:
      - webnet

volumes:
  wordpress_data:
  mysql_data:

secrets:
  wp_db_password:
    external: true
  mysql_root_password:
    external: true

networks:
  webnet:
    driver: overlay

Performance Optimization

Caching

  • Redis Object Cache: Speed up WordPress queries
  • Varnish: Full-page caching
  • CDN: CloudFlare for static assets
  • Browser Caching: Leverage browser cache headers

Database

  • Query Optimization: Optimize slow queries
  • Connection Pooling: Reuse database connections
  • Indexing: Add indexes for frequent queries
  • Cleanup: Remove post revisions and spam

Storage

  • S3 Offload: Move media to S3
  • Image Optimization: Compress images
  • Lazy Loading: Load images on scroll
  • Minification: Minify CSS/JS

Monitoring

Metrics

  • Container Stats: CPU, memory, network
  • Response Times: Page load performance
  • Database Queries: Query performance
  • Error Rates: Track 404s and 500s

Logging

  • Access Logs: Track visitor activity
  • Error Logs: Debug issues
  • Security Logs: Monitor failed logins
  • Centralized Logging: Aggregate logs with ELK stack

Backup Strategy

Automated Backups

# Daily MySQL backup to S3
0 2 * * * docker exec mysql mysqldump -u root -p$MYSQL_ROOT_PASSWORD wordpress | gzip | aws s3 cp - s3://backups/wordpress/$(date +%Y%m%d).sql.gz

# Weekly WordPress files backup
0 3 * * 0 tar -czf - /var/lib/docker/volumes/wordpress_data | aws s3 cp - s3://backups/wordpress/files-$(date +%Y%m%d).tar.gz

Disaster Recovery

  1. Restore MySQL from S3 backup
  2. Restore WordPress files from S3
  3. Verify site functionality
  4. Update DNS if needed

Getting Started

  1. Read WordPress Docker Swarm Deployment
  2. Set up Docker Swarm cluster
  3. Create Docker secrets for passwords
  4. Deploy WordPress stack
  5. Configure domain and SSL
  6. Install plugins and themes
  7. Set up backups

Best Practices

Security

  • Strong Passwords: Use Docker secrets
  • 2FA: Two-factor authentication for admin
  • Limit Login Attempts: Prevent brute force
  • File Permissions: Proper ownership and permissions
  • Regular Updates: Keep WordPress and plugins updated

Performance

  • Caching Plugin: W3 Total Cache or WP Rocket
  • CDN: Distribute static assets
  • Image Optimization: Compress and resize
  • Database Cleanup: Remove unnecessary data

Maintenance

  • Staging Environment: Test before production
  • Version Control: Track theme/plugin changes
  • Monitoring: Set up alerts for downtime
  • Documentation: Document custom configurations

Related: Docker | Infrastructure

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