Ken Moini’s Post

@TechTargetNews #Paravirtualization is a type of hardware virtualization which enables the guest operating system (#OS) in a virtual machine (#VM) to access the hypervisor directly. This differs from conventional full virtualization. https://bit.ly/3wSuZHm

https://lnkd.in/e2jMEji6 5 reasons virtual machines still matter: Containers are a vital technology for modern infrastructure, but virtual machines still have their place #vms #containers

While the idea of moving from VMs to Containers might be enough to cause some sleepless nights, Greg Deffenbaugh says "IBM tests show that transaction workloads on x86 can be delivered at over four times the throughput and in half the response time using a Red Hat® OpenShift® environment versus a classically deployed virtual machine environment" and in the attached article, goes into more depth on the topic while pointing to additional resources for those already sketching out plans to handle whatever comes next from Broadcom.

🚀 Kubernetes Troubleshooting Guide 🚀              Part - 2 𝗢𝗢𝗠 (𝗢𝘂𝘁 𝗼𝗳 𝗠𝗲𝗺𝗼𝗿𝘆) 𝗘𝗿𝗿𝗼𝗿𝘀 💥 𝗖𝗮𝘂𝘀𝗲: Pod exceeds memory limits. 𝗥𝗲𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻: 🧠 Analyze resource usage: kubectl top pod <pod-name>. Adjust memory requests/limits in the pod spec. 𝗛𝗶𝗴𝗵 𝗖𝗣𝗨 𝗨𝘀𝗮𝗴𝗲 🔄 𝗖𝗮𝘂𝘀𝗲: Pod consumes excessive CPU. 𝗥𝗲𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻: 📊 Monitor CPU utilization: kubectl top pod <pod-name>. Optimize application performance or scale horizontally. 𝗣𝗼𝗱𝘀 𝗦𝘁𝘂𝗰𝗸 𝗶𝗻 𝗣𝗲𝗻𝗱𝗶𝗻𝗴 𝗦𝘁𝗮𝘁𝗲 ⏳ 𝗖𝗮𝘂𝘀𝗲: Insufficient resources or scheduling issues. 𝗥𝗲𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻: 🌱 Increase cluster capacity or adjust pod requests/limits. Review node conditions: kubectl describe node. 𝗡𝗲𝘁𝘄𝗼𝗿𝗸 𝗖𝗼𝗻𝗻𝗲𝗰𝘁𝗶𝘃𝗶𝘁𝘆 𝗜𝘀𝘀𝘂𝗲𝘀 🌐 𝗖𝗮𝘂𝘀𝗲: Pod unable to communicate with external resources. 𝗥𝗲𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻: 🛰️ Diagnose network configurations: kubectl describe pod <pod-name>. Check network policies and firewall rules. 𝗦𝘁𝗼𝗿𝗮𝗴𝗲 𝗩𝗼𝗹𝘂𝗺𝗲 𝗘𝗿𝗿𝗼𝗿𝘀 📂 𝗖𝗮𝘂𝘀𝗲: Failure in accessing or mounting volumes. 𝗥𝗲𝘀𝗼𝗹𝘂𝘁𝗶𝗼𝗻: 🗄️ Verify volume configurations: kubectl describe pod <pod-name>. Check storage class availability and permissions. #kubernetes #Cloud #k8s #learning #EKS #AKS #GKE

KVM Storage Support and Features https://lnkd.in/dzfiMk9P #kvm #qemu #storage #virtualization #comparison #tomsitcafe

Virtualization Technology in What Every Beginner Should Know https://lnkd.in/ekmYE28b

Virtualization: What is Virtualization? Virtualization is pretty easy to understand. When it lets different operating systems run together on one machine, we call that combination a virtual machine (VM) 🖥 . The main piece of hardware running a VM is called the host 💻 . Think of virtualization as having one computer that acts like many, sharing its CPU, memory, and storage with different virtual machines. Why Virtualization is important? Virtualization lets you work with computer stuff more flexibly. Physical servers are like big machines that use power, space , and need fixing sometimes. With virtualization, you turn all that physical stuff into software, so you can control it like using an app online. It makes managing and using computer things easier. Real life Example: Think of virtualization like a pizza 😋 . When you order a whole pizza, you're limited to just one type of pizza and everyone has to share it. But with virtualization, it's like having the ability to divide that pizza into smaller slices 🍕, each customized to different people's tastes. So, the need for virtualization arises when you want to make the most out of your resources, just like how dividing a pizza allows everyone to get exactly what they want without wasting any. In real life, companies might use virtualization to run multiple different applications or operating systems on the same physical hardware, making their infrastructure more efficient and adaptable to different needs.

Dig into stateful and state transition testing in service virtualization. Learn how to simulate and optimize your system's behavior effectively.

🤔 𝐓𝐢𝐫𝐞𝐝 𝐨𝐟 𝐑𝐞𝐬𝐨𝐮𝐫𝐜𝐞 𝐁𝐨𝐭𝐭𝐥𝐞𝐧𝐞𝐜𝐤𝐬 𝐚𝐧𝐝 𝐕𝐢𝐫𝐭𝐮𝐚𝐥 𝐂𝐡𝐚𝐨𝐬? 𝐃𝐢𝐬𝐜𝐨𝐯𝐞𝐫 𝐭𝐡𝐞 𝐆𝐚𝐦𝐞-𝐂𝐡𝐚𝐧𝐠𝐞𝐫 𝐟𝐨𝐫 𝐄𝐟𝐟𝐨𝐫𝐭𝐥𝐞𝐬𝐬 𝐕𝐢𝐫𝐭𝐮𝐚𝐥𝐢𝐳𝐚𝐭𝐢𝐨𝐧! 💡🚀 Let's dive into the fascinating world of KVM (Kernel-based Virtual Machine) architecture! 🌐✨ #kvm #virtualmachines 🔍 𝙒𝙝𝙖𝙩 𝙞𝙨 𝙆𝙑𝙈 KVM, a cornerstone in virtualization technology, is a hypervisor that empowers the virtualization of hardware resources. Now, is it a hosted or bare-metal hypervisor, you ask? Well, buckle up because it's a bare-metal hypervisor! 🚀💻 #hypervisor 🛠️ 𝙇𝙖𝙮𝙚𝙧𝙨 𝙐𝙣𝙫𝙚𝙞𝙡𝙚𝙙 At the bottommost layer of the KVM hierarchy, we have the robust Bare Metal Server, providing the foundational infrastructure for the virtualization magic to unfold. 🏗️ On top of this, we encounter the Linux Kernel, acting as the powerhouse for KVM. #baremetal 💡 𝙇𝙞𝙣𝙪𝙭 𝙆𝙚𝙧𝙣𝙚𝙡 𝙖𝙣𝙙 𝙃𝙮𝙥𝙚𝙧𝙫𝙞𝙨𝙤𝙧 𝙄𝙣𝙩𝙚𝙜𝙧𝙖𝙩𝙞𝙤𝙣 Here's the cool part – the Linux Kernel isn't just an observer in this symphony; it houses the KVM hypervisor within its code! 🐧💻 This integration enables seamless communication and coordination between the host hardware and the virtualized environments. #kernel 🔗 𝙆𝙚𝙧𝙣𝙚𝙡 𝙩𝙤 𝙃𝙤𝙨𝙩 𝙊𝙎 𝘾𝙤𝙣𝙣𝙚𝙘𝙩𝙞𝙤𝙣 Moving up the ladder, the Linux Kernel establishes a crucial connection to the Host Operating System. This link is pivotal for managing and coordinating resources, ensuring a harmonious coexistence between the host and virtualized instances. 🌐🤝 #operatingsystem 🌐 𝙃𝙮𝙥𝙚𝙧𝙫𝙞𝙨𝙤𝙧 𝙖𝙣𝙙 𝙂𝙪𝙚𝙨𝙩 𝙊𝙎 𝘾𝙤𝙣𝙣𝙚𝙘𝙩𝙞𝙤𝙣 Finally, at the top layer, the KVM hypervisor forms a symbiotic relationship with the Guest Kernel inside the Guest Operating System. This connection allows for the creation and management of multiple virtual machines, each with its own isolated environment. 🚀👥 #guestos Let's keep the conversation going! What are your thoughts on KVM, and how has it transformed your virtualization experiences? Share your insights below! 👇✨ #virtualization #techtalk Rahul Maheshwari

Dig into stateful and state transition testing in service virtualization. Learn how to simulate and optimize your system's behavior effectively.