Designed a complete multi-region private

Designed a complete multi-region private cloud architecture using OpenNebula across three geographically separated regions with a total of 20 physical servers.

The solution provides centralized cloud management, regional workload isolation, secure inter-region connectivity, shared cloud services, disaster recovery, backup replication, and dedicated monitoring for the complete infrastructure.

The environment was structured as follows:

Primary Region: 8 servers

Secondary Region: 8 servers

Disaster Recovery and Expansion Region: 4 servers

Centralized OpenNebula management and scheduling

KVM-based virtualization across all compute nodes

Regional firewalls, routers, load balancers, and gateway services

Separate compute, storage, management, tenant, replication, and monitoring networks

Shared storage and Ceph-based storage architecture

Cross-region backup replication and workload failover

Centralized image, template, user, network, and lifecycle management

Secure administrator and tenant access through SSO and role-based access control

A dedicated monitoring and observability environment was also designed separately from the production cloud network. The monitoring stack included Prometheus or Zabbix for metrics collection, Grafana for dashboards, Alertmanager for notifications, and Loki or the ELK Stack for centralized log management.

Regional monitoring proxies and agents collect host, VM, storage, application, and network metrics from each region while keeping the monitoring infrastructure isolated from tenant and production traffic.

The architecture was designed to provide:

High availability across multiple regions

Centralized private cloud management

Secure workload and tenant isolation

Disaster recovery and regional failover

Scalable compute and storage capacity

Centralized monitoring, logging, and alerting

Infrastructure automation through APIs, Terraform, Ansible, and CI/CD pipelines

This project demonstrates my ability to design secure, scalable, highly available private cloud platforms using OpenNebula, KVM, software-defined networking, distributed storage, infrastructure automation, and enterprise monitoring technologies.