Creating a Load Balancer with SSL Offloading | CloudStack Feature Deep Dive
This article explains how to use SSL offloading with Apache CloudStack starting from version 4.22.0, enabling HTTPS termination directly on the Virtual Router. This reduces CPU load on backend Instances, simplifies SSL certificate management, and centralises TLS security settings. It covers: What SSL offloading is and its key benefits. How to upload and manage SSL […]
Apache CloudStack 4.22 – Release Overview
Apache CloudStack 4.22 is a Long-Term Support (LTS) release focused on stability and production readiness. It consolidates the platform work introduced in 4.21 and delivers targeted improvements in Backup and DR, VMware migration, Extensions, and operational observability. Highlights include enhanced Backup & DR (cross-zone restore, Ceph/Shared MountPoint support, backup selection at deploy), SSL offloading on […]
Scaling Apache CloudStack to 100,000 Hosts and Millions of Instances
Abstract Apache CloudStack, a proven open‑source IaaS platform, has demonstrated strong scalability in production deployments with thousands of hypervisors. However, reaching hyperscale targets—100,000 hosts and millions of instances—revealed architectural and resource bottlenecks. This whitepaper analyses those challenges and describes enhancements such as database optimisations, improved agent communications, caching, and concurrency handling. These improvements, validated through […]
What’s New in CAPC v0.6.0 & v0.6.1: Enhancing Networking Capabilities
The CloudStack provider for Cluster API (CAPC) recently released versions v0.6.0 and v0.6.1. These updates significantly enhance networking capabilities by introducing Virtual Private Cloud (VPC) support, enabling routed Networks, making Network and VPC offerings configurable, and allowing the attachment of multiple Network Interface Cards (NICs) to Nodes. Version v0.6.1 also includes a crucial update to […]
What’s New in Apache CloudStack 4.20.2.0
Apache CloudStack 4.20.2.0 is a 4.20 LTS release with 150+ fixes and improvements. It includes performance gains for the VNC console, enhanced VMware to KVM migration, networking improvements, updates to CKS and UI components, and a new SystemVM template based on Debian 12.12.0. What’s New in Apache CloudStack 4.20.2.0 The new Apache CloudStack 4.20.2.0 […]
Fine-Grained Storage Connectivity with Storage Access Groups in Apache CloudStack | CloudStack Feature First Look
Storage Access Groups (SAGs), introduced in Apache CloudStack 4.21, allow operators to restrict which Hosts connect to a specific Primary Storage. This feature replaces the default behaviour of connecting the Primary Storage to all Hosts within its scope, optimising resource utilisation, reducing load, and enforcing isolation policies in large-scale environments. The Challenge of Broad […]
Async Agent Command Reconciliation | CloudStack Feature First Look
Apache CloudStack 4.21 introduces Async Agent Command Reconciliation, a mechanism designed to improve the reliability and accuracy of long-running operations (such as Instance and Volume migrations) when interruptions occur involving the Management Server, Agent, or the network. The Feature tracks and reconciles key Commands—CopyCommand, MigrateCommand, and MigrateVolumeCommand—by utilizing Agent heartbeats and a new reconciliation workflow. […]
Flexible CKS Clusters in CloudStack 4.21 | CloudStack Feature First Look
Apache CloudStack has significantly enhanced its Kubernetes integration through the CloudStack Kubernetes Service (CKS), particularly with the release of CloudStack 4.21. These improvements focus on increasing the flexibility, scalability, and manageability of Kubernetes clusters within the CloudStack environment. Key developments include enhanced visibility for Cluster API for CloudStack (CAPC) clusters, granular control over node types […]
ShapeBlue Takes the Stage: Contributing to the CloudStack Collaboration Conference 2025
The stage is set: this year’s CloudStack Collaboration Conference returns to Milan, Italy, from November 19–21. ShapeBlue is proud to once again play an active role — supporting the event as a Diamond Sponsor and contributing to the agenda with deep technical insight. This year’s event is expected to be the largest #CloudStackCollab to date. […]
A Guide on Choosing GPUs for Your Cloud
Graphics Processing Units (GPUs) are no longer just for gaming or graphics rendering. In today’s cloud environments, GPUs power artificial intelligence (AI), machine learning (ML), high-performance computing (HPC), and even virtual desktops. For cloud service providers (CSPs), system integrators, and enterprises, choosing the right GPUs can directly influence performance, scalability, and cost-efficiency. This guide will […]
