So now let’s get down to understand the architecture of Oracle Linux Virtualization Manager. We’ll try to understand, what are the relationships between the different components like the engine host and the KVM host? What are the services interrelated into these particular architecture? And how the work process happens inside your Oracle Linux Virtualization Manager. To start with, let’s concentrate on the oVirt engine, the backbone of Oracle Linux Virtualization Manager. It is based on WildFly, a robust Java application, and it functions as a web service, providing centralized management capabilities for both server and desktop virtualisation environment. In its role as a control center, the oVirt engine interacts closely with the virtual desktop and Server Manager, which is VDSM service. This service acts as a host agent, running continuously as a daemon on the KVM host. To direct communication with the VDSM service on Oracle Linux KVM host, the oVirt engine performs a wide array of tasks, including but not limited to managing virtual machines, creating new images from templates, monitoring host resources and ensuring overall system health and performance. The seamless integration between the oVirt engine and the VDSM service enables an efficient and streamlined management of the virtualized infrastructure, empowering administrators with the tools they need to oversee and optimize their virtual environments effectively. So the oVirt engine host and the KVM host interaction is done by using your oVirt engine and the VDSM service. Now, when we talk about the oVirt engine, we’ll try to get into more details about the services and the features provided by the oVirt engine. oVirt Engine encompasses a wide area of functionality, providing users with extensive capabilities. Firstly, it enables the management of Oracle Linux KVM host, ensuring efficient utilization and optimization of resources to support the virtualized environments. Moreover, users have comprehensive control over virtual machines, from their creation and deployment to ongoing monitoring and Maintenance tasks. This includes actions such as starting, stopping, migrating, and monitoring virtual machines, ensuring they operate smoothly and meet performance requirements. Additionally, the engine facilitates the configuration and management of logical networks, allowing for seamless communication between virtualized components and enhancing network connectivity and efficiency. Furthermore, it integrates with storage domains and enables the management of virtual disks, ensuring reliable storage solutions, which are in place to support virtual machine operations and data storage requirements effectively. And the engine also supports the setup and management of cluster, host and virtual machines high availability features, enhancing the system reliability and fault tolerance to minimize downtime and maintain continuous operations. It also offers support for live migration and editing of virtual machines, allowing for seamless adjustments and optimizations without interrupting ongoing operations or affecting service availabilities. The engine also facilitates dynamic load balancing across virtual machines based on resource usage and predefined policies. This ensures optimal performance and resource allocation, enhancing the overall efficiency of the virtualized environment. And it also provides the comprehensive monitoring and oversight of all objects within the environment, including virtual machines, host, storage, and networks. This enables the administrators to maintain a system, health and performance, and proactively address any issues that may arise. The majority of these tasks can be conveniently performed through the administration portal, which offers a centralized and user-friendly interface for managing the virtualized infrastructures. It is also manages the streamlined operations with a subset of tasks that can be executed using the VM portal or the cockpit, providing users with flexibility and choice in their management approach. So these are the features of the oVirt engine. You can understand, like most of the features can be managed by using these interfaces or portals which are provided by the oVirt engine application. Now let’s try to get a little bit of understanding about the basic architecture of the host, which is the KVM host. So the engine, as you know, is the brain of Oracle Linux Virtualization Manager. It is installed on the Oracle Linux server and helps manage everything in the virtualization. But the real workhorses are the Oracle Linux KVM hosts. These hosts are like the muscle, providing the computing power needed to run virtual machines. Think of an engine as the manager and the KVM host as the workers. The engine tells the host what to do and the host do all the heavy-lifting, running the virtual machines, and handling all the computing tasks. So while the engine is important for managing everything, it is the host that actually make things happen by running the virtual machines and keeping everything running smoothly. Now, what is the components inside the host? And we’ll try to understand the different components of the host and how they provide a virtualization support to the host. The collaboration between the KVM, which is the kernel-based virtual machine and the quick emulator, which is QEMU, is pivotal in providing comprehensive virtualization capabilities. KVM functions as a loadable kernel module, leveraging hardware extensions to achieve full virtualization. This empowers the host system to share its physical hardware resources with virtual machines seamlessly. KVM operates within the kernel space, while virtual machines operates as individual QEMU processes, or also the quick emulator processes in the user space. The quick emulator plays a complementary role by emulating hardware components essential for virtual machines, such as the CPU, memory, network, and disk devices. The symbolic relationship enables KVM to function as a complete hypervisor catering to the diverse needs of virtualized environments. One of the KVM’s notable features is its ability to execute code directly on the host CPU through QEMU, granting virtual machines unrestricted access to host resources without necessitating modifications to their operating systems. Facilitating the management of KVM host is the virtual desktop and server manager service serving as a host agent. So VDSM is responsible for overseeing all aspects of host management, including virtual machines, networks, and storages. It acts as an intermediary between the engine and the KVM host, ensuring seamless communication and coordination. Adding another layer of functionality is the libvirt daemon operating as a service called as libvirtd on Oracle Linux KVM host....
Continue reading...AristaDBA's Oracle Blog....
Oracle Linux Virtualization Manager Overview….
Let’s dive into the architecture and overview of Oracle Linux Virtualization Manager. This powerful platform is designed to streamline the management of virtualized environments, offering a comprehensive set of features and capabilities. From its flexible management interfaces to its robust automation options, Oracle Linux Virtualization Manager provides administrators with the tools they need to deploy and manage virtual machines efficiently. With its rich web-based user interfaces, REST APIs, and support for role-based access control, it caters to the needs of both administrators and end-users alike. So today I’ll be covering the key aspects of Oracle Linux Virtualization Manager, including its architecture, features, host architecture, data warehouse and databases, and administration interfaces. To start with the Oracle Linux Virtualization Manager Overview– so Oracle Linux Virtualization Manager Overview will explore how it’s structured, including its components, and how they interact with each other to manage virtualized environments effectively. We’ll be discussing on the architecture overview of Virtualization Manager, which will give us the idea of how the architectural design of Oracle Virtualization Manager is built. Oracle Linux Virtualization Manager revolutionizes server virtualization management. It simplifies the entire process from setup to monitoring and administration of Oracle Linux kernel-based virtual machine environments. Imagine a platform that not only streamlines your operations but also offers top-notch performance without any licensing cost. That’s what Oracle Linux Virtualization Manager brings to the table. In a world where every penny counts, this open-source solution emerges as a game changer. It provides a modern alternative to proprietary server virtualization solutions, ensuring flexibility, efficiency, and significant cost savings for organizations. With Oracle Linux Virtualization Manager, you’re not just getting a tool, you’re embracing a paradigm shift in managing virtual environments and virtual infrastructures. It helps you also to configure, monitor, and manage kernel-based virtual machines. Oracle Linux Virtualization Manager comes with enhanced features to deliver leading performance and security features embedded inside it. It is including the support for Intel VT-x and VT-d hardware extension. VTX helps make virtual machines. It lets different operating systems run together on one computer. It works by creating a virtual processor for each virtual machine. This means each virtual machine can run its own programs and system. VTD helps with input/output device virtualization. It allows VMs to directly use certain devices like graphic cards, network adapters, and storage controllers. This makes I/O tasks faster because the hypervisor doesn’t have to translate requests between the VM and the device. In short, the VTX does processor level virtualization and VTD helps with device virtualization. Both are important for making virtualization work well and fast. On a computer using x86 architectures, each CPU core is treated as a separate physical CPU by the software that manages virtual machines or the main operating systems. Virtual CPUs, also called as vCPUs, are what the guest virtual machine sees as its CPU. The guest VM decides which tasks run on these virtual CPUs, and the software managing, the VM, decides which physical CPU cores or threads these vCPUs use. Oracle Linux KVM comes with a cool feature called hard partitioning, also known as CPU pinning. Hard partitioning means assigning a specific vCPU to certain physical CPU threads or cores. This prevents those vCPUs from being moved to other CPU threads or cores, ensuring they stay where you want them to be, which is essential for licensing Oracle products based on the number of physical cores in use. Data center administrators can use Oracle Linux Virtualization Manager built from the open-source project to manage and support multiple host running Oracle Linux KVM. The heart of this management solution is the oVirt engine which is used to discover KVM host and configure storage and networking for the virtualized data centers. Oracle Linux Virtualization Manager offers a modern web-based UI, as well as REST APIs to manage the Oracle Linux KVM infrastructure. Oracle Linux Virtualization Manager has a dashboard to view– which will give you the information about deployments like the VM, the host, the cluster, and the storage, including the current status of each entity and key performance metrics. Oracle Linux Virtualization Manager is a handy tool crafted from oVirt project, an open-source platform. It is designed to help manage and support many hosts running Oracle Linux KVM. You can use it effortlessly through a web-based interface or a REST API. This tools ensure the customers can keep on-premise data centers running smoothly. For data center administrators, Oracle Linux Virtualization Manager is a game changer. It simplifies the management of multiple hosts running Oracle Linux KVM. The oVirt engine helps in discovering these KVM hosts and setting up the storage and networking for the virtualized data centers. Oracle Linux Virtualization Manager offers an easy-to-use web interface and REST APIs. This makes it a breeze for administrators to keep an eye on the Oracle Linux KVM infrastructures. The interface comes with a dashboard that gives you valuable insights into deployments, including the VM counts, the host counts, the storage status, performance metrics, and the information related to the cluster. With the REST API, you can also go with seamless integration with other management systems which can be easily handled using the REST API options. Oracle Linux Virtualization Manager isn’t just about ease of use, it is about ensuring continuity on-premise data center deployments. You can continue using your existing infrastructure while reaping the benefits of virtualization. To sum up, Oracle Linux Virtualization Manager is more than just a management tool. It’s a catalyst for innovation. It lets you harness the power of virtualization, while keeping your operations running smoothly and efficiently. Now, let’s talk about the Oracle Linux Enterprise Kernel, which is a fancy name for a really powerful part of the operating system. This kernel is like the engine that drives a car, but for your computer. The KVM hypervisor, which is a fancy word for a program that creates and runs virtual machines, is powered by unbreakable enterprise kernel. That’s cool about the setup is that it is really efficient. Even if you load up your computer with lots of tasks, the performance stays super high. It can handle huge amount of work supporting up to 2,048 logical CPUs and 64 terabytes of memory. That’s like having a super-strong computer that can handle anything you throw at it. Whether it’s a big company or a Cloud Service, you can use these features. Now let’s talk about the different types of operating systems that can be run on the UAK-supported options. It works well with lots of different ones, whether you are using Oracle Linux Red Hat Enterprise, CentOS Linux, SUSE Linux, Enterprise server, Ubuntu, Oracle, Solaris, or even Microsoft Windows. UAK has got you covered with all this. This means you can choose the setup that works best for you without worrying about compatibility issues. In a nutshell, Oracle Linux unbreakable enterprise kernel is like the powerhouse behind the computer’s performance. It’s super scalable and works with lots of different operating systems, making it a great choice for big businesses. Let’s move on to something called self-hosted engine, or hosted engine for short. This is a cool feature in Oracle Linux Virtualization Manager that makes managing virtual machines even easier. Normally, you need a separate server just to manage all your virtual machines. But with self-hosted engine, that’s not the case. The management engine is virtualized right alongside the virtual machines themselves. This means you don’t need that extra server, everything runs together on the same machines. Now let’s try to explore the robust features of Oracle Linux Virtualization Manager that ensures seamless operations and enhanced reliability in your virtualized environment. Let’s imagine having the peace of mind knowing that if a virtual machine unexpectedly goes down, Oracle Linux Virtualization Manager will automatically restart it on another server in the cluster. This means your applications stay online without any manual intervention, ensuring uninterrupted services for your use. Moreover, with secure live via migration, you can confidently perform maintenance tasks or scale up resources without causing any downtime. This feature allows you to move running VMs to other servers seamlessly, keeping your servers up and running throughout the process. Additionally, the platform supports storage live migration, enabling you to move virtual disks of running VMs between storage devices without disrupting their operations....
Continue reading...By GoDaddy, Hello Hostinger….
It’s a very short blog post. Just to mention that after about a decade, I have finally gotten fed-up enough from GoDaddy and have moved to...
Continue reading...Difference Between OCI Load Balancer & Network Load Balancer by A-Team….
So this is more of me putting this article for my own memory. Oracle’s A-Team(www.ateam-oracle.com) has put together probably the best article on the difference between...
Continue reading...Understanding OCI Capacity Reservations….
In this blog post, we shall see how we can take leverage of Capacity Reservation in OCI. In this post, we shall create the same. To...
Continue reading...Oracle Database 23ai Is Here….
It was a very very special day(actually night for me) yesterday when Larry(yes, Larry himself) and EVP Juan Loazia announced the latest version of Oracle database-...
Continue reading...Passed OCI Architect Associate 2023 Exam….
This was long time pending. But finally I have written and cleared the exam of OCI Architect Associate 2023. If you are preparing for the same,...
Continue reading...Understanding OCI Security Lists….
Security List Security lists are alike set of common firewall rules associated with a subnet. Because SL are associated with a subnet, they are going to...
Continue reading...Creating A User in OCI….
I have I have had to create few OCI users for an internal demonstration. Since I had to do it and explain this to my team,...
Continue reading...DB Migration – Migration Connectivity Options….
In migration you can use Public Internet. Using this, you do have the options to use reserved Ips or even using ephermal Ips. Though the first...
Continue reading...
Recent Comments