stackbees

How KVM Isolates Guest Virtual Machines from the Host The Core Problem: Running Multiple Kernels Safely VMX Root vs Non-Root Mode: The Key Mechanism VMX Root Mode VMX Non-Root Mode What Happens When a Guest Tries Something Privileged? Memory Isolation: Why Guests Can’t See Host RAM Devices and the Host OS Boundary Why This Matters Takeaway How KVM Isolates Guest Virtual Machines from the Host Virtual machine isolation is the foundation of secure virtualization. [Read More]

Multiqueue in KVM Virtualization: Boosting I/O Performance Preface What is Multiqueue? Advantages of Multiqueue KVM Implementation Reference Multiqueue in KVM Virtualization: Boosting I/O Performance Preface In the realm of virtualization, optimizing I/O performance is a perpetual pursuit. As host systems become more powerful with increasing core counts and faster storage, traditional single-queue I/O models can quickly become a bottleneck, limiting the overall throughput and responsiveness of virtual machines (VMs). [Read More]

The Advantages of Open Source Software: Technical, Economical, and Social Benefits Technical Advantages: Economical Advantages: Social Advantages: Conclusion: The Advantages of Open Source Software: Technical, Economical, and Social Benefits Open source software (OSS) has revolutionized the digital landscape by offering numerous advantages over proprietary alternatives. With its collaborative and transparent nature, OSS has gained popularity across various domains. In this blog post, we will explore the key advantages of open source software from three perspectives: technical, economical, and social. [Read More]

Introduction: Key points Not limited to this Education and Training: Free Trials: Architecting: Implementing: BOAT Built Operate and Transfer: Fanatic Support: Price Discounts Conclusion: Further reading Introduction: In recent years, public cloud computing has revolutionized the way organizations manage their IT infrastructure. It offers scalability, flexibility, cost-effectiveness, and numerous other benefits. However, selling public cloud solutions to businesses requires a strategic approach. In this blog post, we will explore the key factors that contributed to the successful sale of public cloud services, including education and training, free trials, architecting, implementing, BOAT (Built Operate and Transfer), and providing fanatic support. [Read More]

Exploring Virtualization and Hypervisor Management Introduction Questions Exploring Virtualization and Hypervisor Management This session is checking the knowledge of Virtualization and Hypervisor. Some directly related to Openstack and few virtulization in general. Introduction As the demand for efficient and scalable infrastructure continues to grow, OpenStack has emerged as a leading open-source cloud computing platform. OpenStack engineers play a crucial role in designing, deploying, and managing virtualized environments powered by hypervisors. [Read More]

Introduction Why We Need Physical Servers for Running a Serverless Environment Foundation of Virtualization Resource Allocation and Scaling Hypervisor and Hardware Abstraction Backend Operations and Management Security and Data Protection Conclusion Introduction Serverless computing has gained significant popularity in recent years, promising developers the ability to focus solely on writing code without the need to manage server infrastructure. However, a closer examination reveals that serverless computing is not truly devoid of servers. [Read More]

Understanding the Difference Between SFTP and FTPS SFTP: SSH File Transfer Protocol FTPS: File Transfer Protocol over SSL Understanding the Difference Between SFTP and FTPS When it comes to secure file transfer protocols, two popular options are SFTP (SSH File Transfer Protocol) and FTPS (File Transfer Protocol over SSL). While both protocols serve the same purpose of secure file transfer, they differ in various aspects. In this blog post, we will delve into the key differences between SFTP and FTPS, along with a few use cases for each. [Read More]

Introduction Prerequisitess Install Google’s PAM Intialization Configuring PAM Configuring OpenSSH Making SSH Aware of MFA Introduction One of the secure login method in linux based system is Key Based Authentication. Key authentication provides cryptographic strength that even extremely long passwords can not offer. With SSH, public key authentication improves security considerably as it frees the users from remembering complicated passwords (or worse yet, writing them down). User has private key in his laptop / desktop and public key will be pushed to destination server. [Read More]

Your Linux box is slow and you are running top command. Well, you are seeing a lot of metrics, what does these values means. Major CPU Status Idle, the percentage of idle CPU Running a user space program, a User application running. It could be a compiler, Email client Running the kernel, Handling an interrupts, managing resources The above said meta states can be divided. User space programs can be categorized as those running under their initial priority level or those running with a nice priority. [Read More]

What is a hyperscaler Do I need it ? Myths Myth-01 Massive data centers are more efficient than smaller one. Myth-02 Fanatic Support Myth-03 Hyperscalers are redundant and they have better Uptime Myth-04 Flexibility Myth-05 Large product portfolio What is a hyperscaler In computing, hyperscale is the ability of an architecture to scale appropriately as increased demand is added to the system. The cloud service provider should have ability to facilitate their infrastructure propotionate to market demands. [Read More]