Containers and virtualization
Containerization software is taking over across the IT industry as the new favored IT infrastructure, as it enables high-speed and high-efficiency platform and software performance. Learn about the technology, its leading tools and how to use it from experts.
Top Stories
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Conference Coverage
21 Nov 2024
KubeCon + CloudNativeCon 2024 news coverage
This guide to the North American and European KubeCon + CloudNativeCon events covers updates to Kubernetes and other open source cloud-native technologies. Continue Reading
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Tip
19 Nov 2024
Ansible vs. Docker: Differences and similarities explained
Ansible and Docker play specific roles, but when used together, Ansible's playbooks and Docker's Dockerfiles provide greater control and configurability over servers. Continue Reading
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News
15 Nov 2024
AI gateways, Kubernetes multi-tenancy loop in LLMOps
There are many areas of IT infrastructure affected by the emergence of LLMOps; for each, there were products and projects rolled out this week at KubeCon. Continue Reading
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News
14 Nov 2024
Platform engineers call for cloud-native GenAI updates
GenAI apps put unprecedented pressure on IT infrastructure management, which has IT pros in the field looking to the open source community for reinforcements. Continue Reading
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News
12 Nov 2024
OpenShift AI boosts LLMOps chops with Neural Magic deal
The acquisition of a top contributor to an open source library already linked to OpenShift AI comes as LLMOps fundamentally alters the platform engineering scene. Continue Reading
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Tutorial
30 Oct 2024
How to optimize Azure VMs for performance and cost savings
Learn how to reduce the monthly cloud bill from Microsoft while, in some cases, also improving Azure workloads performance by using a storage pooling technique. Continue Reading
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News
24 Oct 2024
Linkerd stable release paywall worked, Buoyant CEO says
Buoyant's CEO urged other CNCF projects to follow Linkerd's lead in holding back stable releases for paying customers, but analysts don't echo that recommendation. Continue Reading
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News
17 Sep 2024
IBM adds to FinOps arsenal as cloud competition winds change
IBM broadens its multi-cloud and hybrid cloud FinOps support with its acquisition of Kubecost, as its AI infrastructure strategy diverges from VMware's under Broadcom. Continue Reading
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Tutorial
13 Sep 2024
Getting started with Argo CD on Kubernetes
Argo CD can make managing Kubernetes clusters simpler and more efficient. Learn how to install Argo CD and set up an application to get started. Continue Reading
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News
12 Sep 2024
Docker pricing changes hike mid-tier costs
Docker adds features but raises Pro and Team prices and adds consumption-based Docker Hub pricing for container image pulls and storage. Continue Reading
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News
27 Aug 2024
VMware Tanzu hones integration, but faces Broadcom backlash
VMware Tanzu now offers a single UI for Cloud Foundry and Kubernetes, a feature years in the making, but the improvement could get lost in post-Broadcom drama. Continue Reading
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Tip
22 Aug 2024
Windows Server 2025 Hyper-V updates promise speed boost
Will the new and improved features in the upcoming Hyper-V release come at the perfect time for Microsoft to capitalize on a series of unpopular changes from VMware? Continue Reading
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Answer
22 Aug 2024
Are virtual machines safe for end users?
Virtual machine security is a complicated topic because there are many factors that can determine their security posture. Learn how to evaluate these factors. Continue Reading
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Video
22 Aug 2024
How to dockerize Spring Boot apps
Spring Boot and Docker naturally fit together. Here's how to dockerize your Spring Boot application in just a few easy steps. Continue Reading
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Definition
19 Aug 2024
What is LXD (Linux container hypervisor)?
LXD, pronounced 'lex-dee,' is a unified platform for managing system containers and virtual machines (VMs). Continue Reading
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Opinion
14 Aug 2024
Software testing lessons learned from the CrowdStrike outage
After the recent CrowdStrike outage, organizations are keen to prevent and prepare for potential future disruptions. These key security and quality lessons can help. Continue Reading
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Tip
12 Aug 2024
10 benefits of containers for AI workloads
IT organizations face a daunting onslaught of new AI projects. Containers offer key benefits to ease the burden throughout an AI workload's lifecycle. Continue Reading
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Tip
12 Aug 2024
How and why to run machine learning workloads on Kubernetes
Running ML model development and deployment on Kubernetes is an absolute must in a world where decoupling workloads can optimize resources and cut costs. Continue Reading
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News
08 Aug 2024
Sysdig Sage early adopters kick the tires on CNAPP AI agents
AI agents in Sysdig Sage add more sophisticated multi-step reasoning than is available with generic LLMs. But it's meant to assist humans, not replace them. Continue Reading
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Definition
07 Aug 2024
What is a service mesh?
A service mesh is a dedicated infrastructure layer that controls service-to-service communication within a distributed application. Continue Reading
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Definition
30 Jul 2024
What is VMware Aria Suite (formerly vRealize Suite)?
VMware Aria Suite, formerly called vRealize Suite, is a software platform designed to help IT administrators build and manage heterogeneous, hybrid cloud environments. Continue Reading
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Definition
30 Jul 2024
What is VMware Certified Professional (VCP)?
VMware Certified Professional (VCP) is a certification level designed to demonstrate technical competency with VMware vSphere and related technologies. Continue Reading
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Definition
30 Jul 2024
What is VMware vSphere?
VMware vSphere is a virtualization platform that includes a suite of products for deploying and managing virtual environments. Continue Reading
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Definition
29 Jul 2024
What is VMware Cloud Director (VCD)?
VMware Cloud Director (VCD), formerly vCloud Director (vCD), is a cloud services delivery platform that helps cloud service providers offer secure cloud resources to their enterprise customers. Continue Reading
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Definition
29 Jul 2024
What is VMware vCenter Server?
VMware vCenter Server is a centralized management platform for configuring, controlling and monitoring VMware vSphere virtual environments. Continue Reading
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Tutorial
12 Jul 2024
Deploy a Redis Cluster on Kubernetes
Redis is a powerful platform with many use cases. Follow this tutorial to run Redis on Kubernetes to simplify deployments and increase reliability and performance. Continue Reading
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Tip
09 Jul 2024
Why should I use Docker containers vs. VMs for my cloud apps?
Containers and VMs have their own use cases, but one takes the lead in efficiency. Compare the two options, and see how Docker can benefit your cloud applications. Continue Reading
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Definition
25 Jun 2024
second-level address translation (SLAT)
Second-level address translation (SLAT) is a hardware virtualization technology that reduces hypervisor overhead. SLAT is now available in many kinds of processors, including those from Intel and AMD. Continue Reading
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Definition
24 Jun 2024
Type 2 hypervisor (hosted hypervisor)
A Type 2 hypervisor is a virtual machine (VM) manager that is installed as a software application on an existing operating system (OS). Continue Reading
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Definition
24 Jun 2024
Virtual Machine Management Service
The Virtual Machine Management service, also known as VMMS or vmms.exe, is the main module in the Microsoft Windows operating system for controlling the virtual machines (VMs) on a Hyper-V server. Continue Reading
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News
19 Jun 2024
SUSE Rancher gears up amid VMware-Broadcom 'feeding frenzy'
SUSE Rancher bolsters its bid to capture users dissatisfied with Broadcom's changes to VMware with the acquisition of StackState and other updates to its Prime package. Continue Reading
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Definition
05 Jun 2024
virtualization
Virtualization is the creation of a virtual version of an actual piece of technology, such as an operating system (OS), a server, a storage device or a network resource. Continue Reading
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Definition
28 May 2024
bare-metal hypervisor (Type 1 hypervisor)
A bare-metal hypervisor, also known as a Type 1 hypervisor, is virtualization software that has been installed directly onto the computing hardware. Continue Reading
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Tip
23 May 2024
Master these 5 common Kubernetes troubleshooting tasks
Not enough nodes? Have some noisy neighbors? Plenty of things can cause containers to underperform. Here's how to chase down and resolve three common Kubernetes problems. Continue Reading
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Definition
22 May 2024
virtualization sprawl (VM sprawl)
Virtualization sprawl is a phenomenon that occurs when the number of virtual machines (VMs) on a network reaches a point where administrators can no longer manage them effectively. Continue Reading
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Tutorial
21 May 2024
Secure Kubernetes with this Kubescape tutorial
Kubescape can help discover misconfigurations in a Kubernetes cluster by scanning various resource types. Learn how to use the platform to scan clusters. Continue Reading
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Conference Coverage
20 May 2024
Red Hat Summit 2024 news and conference guide
Use this Red Hat Summit conference guide to stay up to date on current trends, emerging technologies and information from keynote speakers and industry experts. Continue Reading
- Definition 14 May 2024
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Definition
10 May 2024
virtual machine escape
A virtual machine escape is an exploit in which an attacker runs code on a VM that lets the operating system (OS) running within it break out and interact directly with the hypervisor. Continue Reading
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News
09 May 2024
Red Hat CTO, Nvidia AI exec reveal joint LLMOps roadmap
The company leaders discussed deepening integration between OpenShift AI and Nvidia NIMs, how they fit into RHEL AI and what's surprised them about AI growth so far. Continue Reading
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Tip
08 May 2024
VM security in cloud computing explained
Cloud computing allows an organization to reduce its risks by having to secure fewer resources. The tradeoff is that cloud creates more attack vectors. Don't let VMs trip you up. Continue Reading
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News
07 May 2024
Red Hat OpenShift AI links LLMs into hybrid cloud
An extensively updated OpenShift AI will underpin RHEL AI and, if Red Hat has its way, enterprises' AI infrastructure from the edge to the public cloud. Continue Reading
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Definition
26 Apr 2024
Azure Kubernetes Service (AKS)
Azure Kubernetes Service (AKS) is a managed container orchestration service based on the open source Kubernetes system, which is available on the Microsoft Azure public cloud. Continue Reading
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Definition
22 Apr 2024
host virtual machine (host VM)
A host virtual machine is the server component of a virtual machine the underlying hardware that provides computing resources to support a particular guest VM. Continue Reading
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Tip
08 Apr 2024
Compare Nutanix AHV vs. VMware ESXi in the hypervisor battle
Though Nutanix AHV and VMware ESXi offer similar feature sets, admins' decisions will depend on several factors, such as virtualization needs and workload size. Continue Reading
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Tutorial
02 Apr 2024
Configure Kubernetes garbage collection to get rid of waste
Kubernetes garbage collection is an important task for cluster health. Learn how to configure garbage collections to your own preference to effectively manage deployments. Continue Reading
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Opinion
27 Mar 2024
AI, storage, infrastructure in focus at KubeCon Europe 2024
Takeaways at KubeCon + CloudNativeCon Europe 2024 included the continued prevalence of AI in infrastructure and the increasing value of Kubernetes storage management. Continue Reading
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Tip
26 Mar 2024
Containers vs. VMs: What are the key differences?
Containers are a valuable option for deploying applications, but they have limitations and operate differently than VMs. Continue Reading
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News
22 Mar 2024
Sidecarless Istio Ambient Mesh clears cloud interop hurdle
Istio's Ambient Mesh is now compatible with major cloud providers' managed Kubernetes services, available as an Amazon EKS add-on and slated for beta in the next release. Continue Reading
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Definition
18 Mar 2024
paravirtualization
Paravirtualization is a type of hardware virtualization that enables the guest operating system (OS) in a virtual machine (VM) to access the hypervisor directly, rather than indirectly through a complex abstraction layer, as is the case with conventional full virtualization. Continue Reading
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Tutorial
15 Mar 2024
Server consolidation benefits, types and considerations
Server consolidation enables admins to boost server utilization and decrease power consumption, which can also reduce costs and improve performance. Continue Reading
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Definition
13 Mar 2024
What is server virtualization? The ultimate guide
Server virtualization is a process that creates and abstracts multiple virtual instances on a single server. Continue Reading
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Feature
12 Mar 2024
6 common virtualization problems and how to solve them
Organizations can correct common problems with virtualization, such as VM sprawl and network congestion, through business policies rather than purchasing additional technology. Continue Reading
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Tip
07 Mar 2024
What's the difference between Type 1 vs. Type 2 hypervisor?
Choosing between the two hypervisor types largely depends on whether IT administrators oversee an enterprise data center or client-facing, end-user systems. Continue Reading
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Definition
04 Mar 2024
application containerization (app containerization)
Application containerization is a virtualization technology that works at the operating system (OS) level. It is used for deploying and running distributed applications in their own isolated environments, without the use of virtual machines (VMs). Continue Reading
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Definition
26 Feb 2024
containers as a service (CaaS)
Containers as a service (CaaS) is a cloud-based service that provides a secure environment for running containerized applications. Continue Reading
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News
22 Feb 2024
Linkerd paywall prompts online debate, CNCF TOC review
Linkerd's decision to charge for access to stable builds of its service mesh code sparks objections and debate about open source governance, along with an official CNCF response. Continue Reading
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News
21 Feb 2024
Some Linkerd service mesh users will soon have to pay
Companies with more than 50 employees using Linkerd service mesh in production must pay Buoyant for stable releases starting in May. Open source users and analysts weigh in. Continue Reading
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Definition
20 Feb 2024
hypervisor
A hypervisor is software that facilitates running multiple virtual machines (VMs) with their own operating systems on a single computer host's hardware. Continue Reading
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Definition
12 Feb 2024
guest operating system (guest OS)
A guest operating system is the operating system installed on either a virtual machine (VM) or partitioned disk. It is usually different from the host operating system. Continue Reading
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Definition
26 Jan 2024
Docker Swarm
Docker Swarm is a container orchestration tool for clustering and scheduling Docker containers. Continue Reading
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Answer
18 Jan 2024
Microsoft Hyper-V vs. VMware vSphere: Feature comparison
Hyper-V and VMware are in a perpetual battle for supremacy in the virtualization market. Although the hypervisors have similar features, they differ on some key capabilities. Continue Reading
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Tutorial
08 Jan 2024
Deploy OpenTelemetry to improve Kubernetes observability
Deploying OpenTelemetry on Kubernetes can give teams a leg up in observability monitoring. It only takes a few simple steps to get the tool up and running. Continue Reading
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Definition
04 Jan 2024
Kubernetes
Kubernetes, also referred to as K8s for the number of letters between K and S, is an open source platform used to manage containerized applications across private, public and hybrid cloud environments. Continue Reading
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News
21 Dec 2023
Cisco Security Cloud adds Isovalent for multi-cloud networks
The commercial backer of open source networking and security projects Cilium and Tetragon comes under Cisco's control for cloud-native network security. Continue Reading
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News
20 Dec 2023
Server-side Wasm to-do list lengthens for 2024
Server-side WebAssembly hype peaked in late 2022, but a year later, its path to general availability for key features remains long and cloud portability alternatives are emerging. Continue Reading
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News
14 Dec 2023
SUSE Rancher Kubernetes regroups amid platform trend
It's been a year of seismic shifts for SUSE's Rancher Kubernetes management products as market buzz shifts to platform engineering, forcing changes in strategy heading into 2024. Continue Reading
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Definition
14 Dec 2023
logical volume management (LVM)
Logical volume management (LVM) is a form of storage virtualization that offers system administrators a more flexible approach to managing disk storage space than traditional partitioning. Continue Reading
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Definition
06 Dec 2023
service virtualization
Service virtualization is the process of creating replicas of systems that new applications depend on to test how well the application and systems integrate. Continue Reading
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Tip
04 Dec 2023
An IT ops guide to Kubernetes Job vs. CronJob
Jobs and CronJobs both execute tasks in Kubernetes. Their key difference comes down to frequency, and matching a task with the wrong Job type can lead to unsuccessful execution. Continue Reading
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Answer
01 Dec 2023
11 real benefits of microservices
There's a reason why so many vendors have moved from monoliths to microservices. Here are 11 real benefits microservices bring to companies. Continue Reading
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Opinion
22 Nov 2023
Key takeaways from KubeCon + CloudNativeCon 2023
Over 14,000 attendees took in KubeCon + CloudNativeCon 2023 from Chicago and saw major announcements across the board in observability, sustainability and more. Continue Reading
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News
02 Nov 2023
IT pros size up Microsoft Radius app developer platform
As the platform engineering era dawns, enterprises seek better ways to tie apps to distributed infrastructure across clouds. But can Azure's owner build multi-cloud consensus? Continue Reading
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Tip
02 Nov 2023
WebAssembly vs. Kubernetes: Understand the relationship
WebAssembly provides an avenue for the creation of highly portable web applications. Pairing Wasm with Kubernetes can make that process easier to orchestrate and manage. Continue Reading
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Definition
02 Nov 2023
platform
In IT, a platform is any hardware or software used to host an application or service. Continue Reading
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News
26 Oct 2023
Rancher founders' new venture recasts Kubernetes management
While Rancher focused on simplifying Kubernetes management, Acorn Labs looks to remove it entirely from developer workflows by embedding it within a new kind of application image. Continue Reading
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Definition
23 Oct 2023
Cloud Native Computing Foundation (CNCF)
The Cloud Native Computing Foundation (CNCF) is an open source software foundation that promotes the adoption of cloud-native computing. Continue Reading
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News
05 Oct 2023
Docker enters GenAI development fray with new tools
Docker jumps aboard the generative AI bandwagon with a pre-built set of tools to jump-start app development using LLMs and a Docker AI productivity tool. Continue Reading
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News
04 Oct 2023
Docker Scout GA leads 'local plus cloud' push
Docker Scout replaces open source Docker Scan with an event-driven vulnerability management system in a bid to boost the vendor's value beyond developers' local laptops. Continue Reading
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News
27 Sep 2023
Now a graduated CNCF project, Istio contests complexity rep
Boasting a broader contributor base, including Microsoft, and with service mesh on the verge of going fully mainstream, Istio advocates look to shake the project's early image. Continue Reading
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Definition
14 Sep 2023
Docker
Docker is an open source software platform used to create, deploy and manage virtualized application containers on a common operating system (OS), with an ecosystem of allied tools. Continue Reading
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News
12 Sep 2023
Cisco Full-Stack Observability draws on channel clout
Cisco's latest tie-in between app security and observability doesn't break new ground, but the vendor can use its network security cachet and partners to woo enterprise buyers. Continue Reading
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Definition
08 Sep 2023
virtual CPU (vCPU)
A virtual CPU (vCPU) is the processor of a virtual machine (VM). Continue Reading
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Tutorial
22 Aug 2023
How to run ML workloads with Apache Spark on Kubernetes
IT staff looking for ways to maintain ML workloads with ease are increasingly turning to Apache Spark. Follow these simple steps to set up a Spark cluster on Kubernetes. Continue Reading
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Definition
21 Aug 2023
logical partition (LPAR)
A logical partition (LPAR) is a subset of a computer's processor, memory and I/O resources that behaves much like a physical server. Continue Reading
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Definition
16 Aug 2023
Terraform
HashiCorp Terraform is an infrastructure as code (IaC) software tool that allows DevOps teams to automate infrastructure provisioning using reusable, shareable, human-readable configuration files. Continue Reading
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Definition
09 Aug 2023
VMware snapshot
A VMware snapshot is a copy of a virtual machine (VM) in a VMware environment taken at a specific point in time. Continue Reading
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Tutorial
31 Jul 2023
How to configure SELinux for applications and services
Admins need to follow six steps to configure SELinux properly to run applications and services. This tutorial walks you through how to configure the security system. Continue Reading
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Tip
28 Jul 2023
Tips and tools for collecting helpful Kubernetes metrics
Metrics are an integral part of any Kubernetes deployment. But teams often struggle with identifying the right metrics and choosing the right tools to gather the most helpful data. Continue Reading
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Definition
25 Jul 2023
containers (container-based virtualization or containerization)
Containers are a type of software that can virtually package and isolate applications for deployment. Continue Reading
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News
19 Jul 2023
Chainguard automates SBOMs, but has Images-based agenda
Container images, that is. Chainguard Enforce now automates SBOMs, but execs and an early customer say they aren't the ultimate answer to software supply chain security. Continue Reading
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Definition
12 Jul 2023
Windows containers
Windows containers provide abstracted, isolated, lightweight and portable operating environments for application development on a single system. Continue Reading
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Feature
11 Jul 2023
Practice troubleshooting Kubernetes clusters using log data
Knowing how to interpret application logs is essential for successful Kubernetes troubleshooting. Get hands-on practice with this walkthrough from Kubernetes expert Chad Crowell. Continue Reading
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Feature
11 Jul 2023
A Kubernetes expert shares CKA exam preparation tips
Kubernetes admin and author Chad M. Crowell discusses how to prep for the Certified Kubernetes Administrator exam, whether getting a Kubernetes certification is worth it and more. Continue Reading
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Tip
11 Jul 2023
What is the best OS for Docker?
Admins that want to run Docker containers can choose from Linux distros, including Ubuntu Core, RancherOS and others. Compare options for Docker OSes. Continue Reading
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Definition
10 Jul 2023
server hardware degradation
Server hardware degradation is the gradual breakdown of the physical parts of a server. Continue Reading
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Tip
07 Jul 2023
Handling Kubernetes challenges in complex cloud environments
Multi-cloud Kubernetes deployments present management, operations and cost issues for even the most seasoned cloud teams, but the right strategy can combat those challenges. Continue Reading
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Definition
05 Jul 2023
Linkerd
Linkerd is an open source network proxy installed as a service mesh for Kubernetes. Continue Reading
- Definition 05 Jul 2023
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Definition
30 Jun 2023
Alpine Linux
Alpine Linux is a small, security-oriented, lightweight Linux distribution based on the musl C standard library and BusyBox utilities instead of GNU. Continue Reading
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Definition
20 Jun 2023
VM BIOS (virtual machine basic input/output system)
A VM BIOS (virtual machine basic input/output system) is the set of instructions that controls the booting process of a VM. Continue Reading
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Answer
20 Jun 2023
When should you use K3s vs. MicroK8s?
Looking for an efficient, user-friendly alternative to traditional Kubernetes? Compare the popular lightweight distributions K3s and MicroK8s to decide which is best for you. Continue Reading