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Codono Multi-Server Setup Script README

Overview

This script automates the configuration of a secure, high-availability multi-server environment with MariaDB master-slave replication, Memcached for session storage, and necessary security configurations. It creates a production-ready environment while addressing security, performance, and reliability concerns.

Features

  • Automated MariaDB master-slave replication setup
  • Secure credentials management with strong password generation
  • Memcached distributed session storage
  • Redis configuration for memory caching
  • PHP environment setup with required extensions
  • Web server configuration with basic authentication
  • Support for both single-server and multi-server deployments
  • Comprehensive logging of the installation process

Prerequisites

  • Ubuntu/Debian-based operating system
  • Root or sudo access
  • Network connectivity between servers
  • DNS resolution configured properly
  • Open ports: 3306 (MariaDB), 11211 (Memcached), 6379 (Redis)

Usage

Initial Setup on Master Server

  1. Download the script: 
    wget https://raw.githubusercontent.com/CodonoTeam/cryptocurrency-exchange-script/main/docs/multi_server/multi-server-setup.sh
chmod +x multi-server-setup.sh
  2. Run the script: 
    ./multi-server-setup.sh
  3. Follow the prompts:
    • Enter your domain name
    • Choose "n" for multi-server setup
    • Enter the master server IP
    • Enter the slave server IP

Setup on Slave Server

  1. Copy the credentials.yml file from master to slave: 
    scp /opt/credentials.yml user@slave_ip:/opt/
  2. Download and run the script: 
    wget https://raw.githubusercontent.com/CodonoTeam/cryptocurrency-exchange-script/main/docs/multi_server/multi-server-setup.sh
chmod +x multi-server-setup.sh
./multi-server-setup.sh

Architecture

  • Master Server: Primary database server with write capabilities
  • Slave Server: Secondary database server for read operations
  • Memcached: Distributed session storage across both servers
  • Redis: Local caching with password protection
  • Load Balancer: Distributes traffic between servers (not included in script)

Security Considerations

  • All credentials are stored in credentials.yml
  • Replication user has restricted access
  • SSL is required for database replication
  • Redis and Memcached are configured with authentication
  • .htaccess protects web directories
  • Credentials file has restricted permissions

Maintenance

  • Regularly update passwords in credentials.yml
  • Monitor database replication status
  • Check server health and resource usage
  • Update software packages regularly

Troubleshooting

  • Verify network connectivity between servers
  • Check MariaDB error logs
  • Ensure firewall rules are correctly configured
  • Validate credentials in credentials.yml

Footer Note

This script was developed to simplify multi-server environment setup while maintaining security and performance standards.