Padmini Cloud Stack(PCS)

Enterprise Open Source Infrastructure Platform

Built using Debian-based open-source components for compute, networking, storage, and security

PCS

OVN

Ceph

KVM

Kernel

Architecture Overview

PCS is a comprehensive cloud infrastructure platform that provides enterprise-grade capabilities across all layers of the stack, from bare metal to application workloads.

Security & Compliance Layer

Comprehensive security controls spanning the entire infrastructure stack

•Network Firewalls & Segmentation

•Workload Isolation

•Encryption at Rest & In Transit

•Secure Access & Identity

•Audit & Compliance Controls

•Threat Detection & Response

PCS Cloud Control Plane

Centralized orchestration and management layer for all cloud resources

Compute Management

KVM/QEMU/libvirt-based VM lifecycle, scheduling, and resource allocation

Network Virtualization

SDN, virtual networks, and routing

Storage Orchestration

Block, object, and file storage management

Identity & Access Management

Authentication, authorization, and RBAC

Image & Lifecycle Management

OS images, snapshots, and versioning

API & Automation Services

RESTful APIs and infrastructure as code

Container Orchestration Platform

Kubernetes-based workload management for modern applications

•Kubernetes-based Workloads

•Platform Services

•Application Lifecycle Management

•Service Mesh & Observability

Software-Defined Networking

Advanced networking capabilities with OVN, OVS, and FRR

•Virtual Networks & Subnets

•BGP Routing & ECMP

•Network Segmentation & VLANs

•Firewall & Security Groups

•Load Balancing & HA

•Network Policy Control

Distributed Storage Services

Ceph-based unified storage for block, object, and file workloads

•Block Storage (RBD)

•Object Storage (S3/Swift)

•File Storage (CephFS)

•Replication & High Availability

•Backup & Disaster Recovery

•Performance Optimization

Virtualization & Hypervisor Layer

KVM/QEMU/libvirt-based virtualization for high-performance compute workloads

•KVM Hypervisor (Kernel-based Virtual Machine)

•QEMU Machine Emulator

•libvirt Virtualization API

•Hardware-assisted Virtualization

•Live Migration & HA

•Resource Overcommit & QoS

Debian-based Operating System Layer

Hardened, optimized Debian foundation for all infrastructure components

•Hardened Debian OS

•Custom Kernel Tuning

•Performance Optimization

•Secure Base Images

•Package Management

•System Monitoring

Bare Metal & Virtual Infrastructure

Physical and virtual compute, storage, and network resources

•Physical Servers (x86 / ARM)

•Virtual Machines

•Storage Nodes & Arrays

•Network Devices & Switches

Migration & Platform Adoption

Seamless transition from legacy infrastructure to modern cloud platforms

Legacy Infrastructure Migration

Move from traditional data centers to PCS

Virtualization to Cloud Transition

Modernize VMware/Hyper-V workloads

Application Modernization

Containerize and optimize applications

Phased Adoption Strategy

Zero/minimal downtime migration approach

Padmini Cloud Stack (PCS) is an enterprise-grade private cloud platform engineered by Padmini Systems using Debian-based open-source components. The architecture is illustrative and represents our customized implementation for compute, storage, networking, security, and operations. PCS is built using open-source technologies including but not limited to OpenStack, KVM, QEMU, libvirt, Ceph, OVN, OVS, FRR, and Kubernetes, all deployed on Debian GNU/Linux foundations.