Hyper-Converged Infrastructure, IT Systems Management
Article | September 14, 2023
DApps (sometimes called Dapps) are from the blockchain universe and so, logically, the apps part stands for application (obviously) and the D part stands for decentralised (only obvious once you know that we’re talking distributed immutable language here). According to the guides section at blockgeeks, DApps are open source in terms of code base, incentivised (in terms of who validates it) and essentially decentralised so that all records of the application’s operation must be stored on a public and decentralised blockchain to avoid pitfalls of centralisation. So then, Cartesi is a DApp infrastructure that runs an operating system (OS) on top of blockchains. The company has now launched a more complete ‘platform-level’ offering, which is described as a layer-2 solution
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Hyper-Converged Infrastructure
Article | September 14, 2023
Adopting DevOps and CD in IaaS environments is a strategic imperative for organizations seeking to achieve agility, competitiveness, and customer satisfaction in their software delivery processes.
Contents
1. Introduction
2. What is IaaS Virtualization?
3. Virtualization Techniques for DevOps and Continuous Delivery
4. Integration of IaaS with CI/CD Pipelines
5. Considerations in IaaS Virtualized Environments
5.1. CPU Swap Wait
5.2. CPU System/Wait Time for VKernel:
5.3. Memory Balloon
5.4.Memory Swap Rate:
5.5. Memory Usage:
5.6. Disk/Network Latency:
6. Industry tips for IaaS Virtualization Implementation
6.1. Infrastructure Testing
6.2. ApplicationTesting
6.3. Security Monitoring
6.4. Performance Monitoring
6.5. Cost Optimization
7. Conclusion
1. Introduction
Infrastructure as a Service (IaaS) virtualization presents significant advantages for organizations seeking to enhance their agility, flexibility, and speed to market within the DevOps and continuous delivery frameworks. Addressing the associated risks and challenges is crucial and can be achieved by employing the appropriate monitoring and testing techniques, enlisted further, in this blog.
IaaS virtualization allows organizations to provision and de-provision resources as needed, eliminating the need for long-term investments in hardware and data centers. Furthermore, IaaS virtualization offers the ability to operate with multiple operating systems, databases, and programming languages, empowering teams to select the tools and technologies that best suit their requirements.
However, organizations must implement comprehensive testing and monitoring strategies, ensure proper security and compliance controls, and adopt the best resource optimization and management practices to leverage the full potential of virtualized IaaS. To achieve high availability and fault tolerance along with advanced networking, enabling complex application architectures in IaaS virtualization, the blog mentions five industry tips.
2. What is IaaS Virtualization?
IaaS virtualization involves simultaneously running multiple operating systems with different configurations. To run virtual machines on a system, a software layer known as the virtual machine monitor (VMM) or hypervisor is required.
Virtualization in IaaS handles website hosting, application development and testing, disaster recovery, and data storage and backup. Startups and small businesses with limited IT resources and budgets can benefit greatly from virtualized IaaS, enabling them to provide the necessary infrastructure resources quickly and without significant capital expenditures.
Virtualized IaaS is a potent tool for businesses and organizations of all sizes, enabling greater infrastructure resource flexibility, scalability, and efficiency.
3. Virtualization Techniques for DevOps and Continuous Delivery
Virtualization is a vital part of the DevOps software stack. Virtualization in DevOps process allows teams to create, test, and implement code in simulated environments without wasting valuable computing resources. DevOps teams can use the virtual services for thorough testing, preventing bottlenecks that could slow down release time. It heavily relies on virtualization for building intricate cloud, API, and SOA systems. In addition, virtual machines benefit test-driven development (TDD) teams that prefer to begin their troubleshooting at the API level.
4. Integration of IaaS with CI/CD Pipelines
Continuous integration is a coding practice that frequently implements small code changes and checks them into a version control repository. This process not only packages software and database components but also automatically executes unit tests and other tests to provide developers with vital feedback on any potential breakages caused by code changes.
Continuous testing integrates automated tests into the CI/CD pipeline. For example, unit and functionality tests identify issues during continuous integration, while performance and security tests are executed after a build is delivered in continuous delivery. Continuous delivery is the process of automating the deployment of applications to one or more delivery environments.
IaaS provides access to computing resources through a virtual server instance, which replicates the capabilities of an on-premise data center. It also offers various services, including server space, security, load balancing, and additional bandwidth. In modern software development and deployment, it's common to integrate IaaS with CI/CD pipelines. This helps automate the creation and management of infrastructure using infrastructure-as-code (IAC) tools. Templates can be created to provision resources on the IaaS platform, ensuring consistency and meeting software requirements. Additionally, containerization technologies like Docker and Kubernetes can deploy applications on IaaS platforms.
5. Considerations in IaaS Virtualized Environments
5.1. CPU Swap Wait
The CPU swap wait is when the virtual system waits while the hypervisor swaps parts of the VM memory back in from the disk. This happens when the hypervisor needs to swap, which can be due to a lack of balloon drivers or a memory shortage. This can affect the application's response time. One can install the balloon driver and/or reduce the number of VMs on the physical machine to resolve this issue.
5.2. CPU System/Wait Time for VKernel
Virtualization systems often report CPU or wait time for the virtualization kernel used by each virtual machine to measure CPU resource overhead. While this metric can't be directly linked to response time, it can impact both ready and swap times if it increases significantly. If this occurs, it could indicate that the system is either misconfigured or overloaded, and reducing the number of VMs on the machine may be necessary.
5.3. Memory Balloon
Memory ballooning is a memory management technique used in virtualized IaaS environments. It works by injecting a software balloon into the VM's memory space. The balloon is designed to consume memory within the VM, causing it to request more memory from the hypervisor. As a result, if the host system is experiencing low memory, it will take memory from its virtual infrastructures, thus negatively affecting the guest's performance, causing swapping, reduced file-system buffers, and smaller system caches.
5.4. Memory Swap Rate
Memory swap rate is a performance metric used in virtualized IaaS environments to measure the amount of memory being swapped to disk. When the swap rate is high, it leads to longer CPU swap times and negatively affects application performance. In addition, when a VM is running, it may require more memory than is physically available on the server. In such cases, the hypervisor may use disk space as a temporary storage area for excess memory. Therefore, to optimize, it is important to ensure that VMs have sufficient memory resources allocated.
5.5. Memory Usage
Memory usage refers to the amount of memory being used by a VM at any given time. Memory usage is assessed by analyzing the host level, VM level, and granted memory. When memory usage exceeds the available physical memory on the server, the hypervisor may use disk space as a temporary storage area for excess memory, leading to performance issues. The disparity between used and granted memory indicates the overcommitment rate, which can be adjusted through ballooning.
5.6. Disk/Network Latency
Some virtualization providers provide integrated utilities for assessing the latency of disks and network interfaces utilized by a virtual machine. Since latency directly affects response time, increased latency at the hypervisor level will also impact the application. An excessive amount of latency indicates the system is overloaded and requires reconfiguration. These metrics enable us to monitor and detect any negative impact a virtualized system might have on our application.
6. Industry tips for IaaS Virtualization Implementation
Testing, compliance management and security arecritical aspects of managing virtualized IaaS environments . By implementing a comprehensive strategy, organizations ensure their infrastructure and applications' reliability, security, and performance.
6.1. Infrastructure Testing
This involves testing the infrastructure components of the IaaS environment, such as the virtual machines, networks, and storage, aiming to ensure the infrastructure is functioning correctly and that there are no performance bottlenecks, security vulnerabilities, or configuration issues. Testing the virtualized environment, storage testing (testing data replication and backup and recovery processes), and network testing are some of the techniques to be performed.
6.2. Application Testing
Applications running on the IaaS virtual environment should be thoroughly tested to ensure they perform as expected. This includes functional testing to ensure that the application meets its requirements and performance testing to ensure that the application can handle anticipated user loads.
6.3. Security Monitoring
Security monitoring is critical in IaaS environments, owing to the increased risks and threats. This involves monitoring the infrastructure and applications for potential security threats, vulnerabilities, or breaches. In addition, regular vulnerability assessments and penetration testing help identify and address potential security issues before they become significant problems.
6.4. Performance Monitoring
Performance monitoring is essential to ensuring that the underlying infrastructure meets performance expectations and has no performance bottlenecks. This comprises monitoring metrics such as CPU usage, memory usage, network traffic, and disk utilization. This information is used to identify performance issues and optimize resource usage.
6.5. Cost Optimization
Cost optimization is a critical aspect of a virtualized IaaS environment with optimized efficiency and resource allocation. Organizations reduce costs and optimize resource usage by identifying and monitoring usage patterns and optimizing elastic and scalable resources. It involves right-sizing resources, utilizing infrastructure automation, reserved instances, spot instances (unused compute capacity purchased at a discount), and optimizing storage usage.
7. Conclusion
IaaS virtualization has become a critical component of DevOps and continuous delivery practices. To rapidly develop, test, and deploy applications with greater agility and efficiency by providing on-demand access to scalable infrastructure resources to Devops teams, IaaS virtualization comes into picture. As DevOps teams continue to seek ways to streamline processes and improve efficiency, automation will play an increasingly important role. Automated deployment, testing, and monitoring processes will help reduce manual intervention and increase the speed and accuracy of development cycles. In addition, containers will offer a lightweight and flexible alternative to traditional virtualization, allowing DevOps teams to package applications and their dependencies into portable, self-contained units that can be easily moved between different environments. This can reduce the complexity of managing virtualized infrastructure environments and enable greater flexibility and scalability. By embracing these technologies and integrating them into their workflows, DevOps teams can achieve greater efficiency and accelerate their delivery of high-quality software products.
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Hyper-Converged Infrastructure
Article | July 13, 2023
Rapid IT infrastructure scaling is always challenging. In March 2020, the coronavirus caused a surge in remote workers as organizations switched overwhelmingly to work-from-home policies. Scaling IT infrastructure to support this sudden shift proved to be a struggle for IT teams, resulting in a migration to cloud-based applications and solutions, a rush on hardware that can support a remote environment, and challenges scaling VPNs to support remote worker security. Here are some of the insights and lessons learned from IT professionals.
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IT Systems Management
Article | August 8, 2022
Consider IaaS (infrastructure as a service) as a virtual version of your traditional data center. IaaS is a branch of cloud computing technology that offers virtualized storage, server, and networking wrapped together as a self-service platform. It is highly cost-efficient and makes up for easier, faster workloads. Although incredibly convenient for business, it largely depends on what your company needs to use it for.
What is IaaS, and How Can It Benefit Your Business?
IaaS first rose to popularity in the early 2010s. Since then, it has become the standard abstraction model for many types of workloads. But with the rise of the microservices application pattern and the arrival of new technologies like containers and serverless IaaS is still a foundational service, but the field is more crowded than ever.
The most common household cloud computing names—AWS (Amazon Web Services), Google Cloud and Microsoft Azure— are all IaaS providers. They all maintain giant data centers around the globe. It includes tons of storage systems, physical servers, and networking equipment under a virtualization layer. Cloud customers access these resources to deploy and run applications in a highly automated manner.
Developing a cloud adoption strategy is a vital step forward for modern-day business. And this subscription-based cloud computing service, IaaS, offers a remote management solution and reduces your purchase cost at the same time.
Additionally, IaaS also provides key solutions vital for any company’s future plans, such as big-data analysis. It allows businesses like yours to analyze massive data sets and see future trends, patterns, and associations that a human wouldn’t.
Understanding the IaaS Architecture
In an IaaS service model, your cloud provider will take over your infrastructure components, such as traditional on-premises data centers and host them on the internet. This includes virtual computing, servers, networking hardware, and infrastructure components, as well as the hypervisor layer.
IaaS service providers will also provide a wide array of services to accompany those infrastructure components.
Monitoring
Detailed billing
Security
Log access
Load balancing
Clustering
Storage resiliency
Backup
Replication
Disaster Recovery
IaaS services are automated and highly policy-driven, so you can implement all your infrastructure tasks effortlessly.
How Does It Work?
IaaS customers access their resources through a WAN (wide area network). Leveraging the cloud provider's services, they will install the remaining elements of an application stack.
For example, you can log in to the IaaS platform to create VMs (virtual machines), install operating systems on each VM, deploy middleware like databases, create storage buckets for workloads and backups, and install the enterprise workload on that VM. Afterward, you can also use the IaaS provider's services to track costs, balance network traffic, monitor performance, troubleshoot application-related issues and manage disaster recovery.
IaaS Use Cases
As IaaS provides general-purpose computing resources, it can be used for any kind of use case. IaaS is most often used today for the development and testing environments, websites, and web apps that interact with customers, data storage, analytics, and data warehousing workloads. Plus, it also offers backup and disaster recovery services, especially for on-premises workloads. IaaS is also a good way to set up and run common business software and apps like SAP.
Real-life Examples
GE Healthcare: Reputed medical imaging facility GE Healthcare adopted Amazon EC2 from AWS to design the GE Health Cloud. GE Health Cloud platform successfully empowered its consumers by collecting, storing, accessing, and processing information worldwide from different types of medical devices to obtain value from data.
Coca-Cola: The beverage giant Coca-Cola collaborated with SoftLayer adopting a pay-as-you-go architecture to manage their CRM system effectively during peak seasons.
Final Thoughts
Before choosing a provider, you will need to think carefully about the services, reliability, and costs. First, you should thoroughly assess the capabilities of your organization’s IT department and determine how well equipped it is to deal with the ongoing demands of IaaS implementation. Accordingly, you will be prepared to choose an alternative provider and move to the alternative infrastructure if you need to.
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