Rancher News

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  An Introduction to Big Data Concepts
  • sorangutan  

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  Gigantic amounts of data are being generated at high speeds by a variety of sources such as mobile devices, social media, machine logs, and multiple sensors surrounding us. All around the world, we produce vast amount of data and the volume of generated data is growing exponentially at a unprecedented rate. The pace of data generation is even being accelerated by the growth of new technologies and paradigms such as Internet of Things (IoT).
  
  https://rancher.com/blog/2019/2019-03-27-introduction-to-big-data-concepts/
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  Rancher 2.2 Hits the GA Milestone
  • sorangutan  

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  We released version 2.2.0 of Rancher today, and we’re beyond excited. The latest release is the culmination of almost a year’s work and brings new features to the product that will make your Kubernetes installations more stable and easier to manage. When we released Preview 1 in December and Preview 2 in February, we covered their features extensively in blog articles, meetups, videos, demos, and at industry events. I won’t make this an article that rehashes what others have already written, but in case you haven’t seen the features we’ve packed into this release, I’ll do a quick recap.
  
  https://rancher.com/blog/2019/rancher-2-2-hits-ga-milestone/
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  Comparing Kubernetes CNI Providers: Flannel, Calico, Canal, and Weave
  • sorangutan  

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  Introduction Network architecture is one of the more complicated aspects of many Kubernetes installations. The Kubernetes networking model itself demands certain network features but allows for some flexibility regarding the implementation. As a result, various projects have been released to address specific environments and requirements. In this article, we’ll explore the most popular CNI plugins: flannel, calico, weave, and canal (technically a combination of multiple plugins). CNI stands for container network interface, a standard designed to make it easy to configure container networking when containers are created or destroyed.
  
  https://rancher.com/blog/2019/2019-03-21-comparing-kubernetes-cni-providers-flannel-calico-canal-and-weave/
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  Introducing Myself, Jason van Brackel, Our New Director of Community
  • sorangutan  

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  My name is Jason van Brackel, aka JvB, and I’m Rancher Labs’ new Director of Community. I’m leaving our wonderful Field Engineering team to take on this new role. Over the years, I’ve worn many hats in this field, from developer to executive leadership. Teaching means a lot to me and I’ve noticed a couple patterns emerging within our community that were best addressed outside of the sales and implementation cycles that happen in Field Engineering.
  
  https://rancher.com/blog/2019/introducing-jason-van-brackel-director-of-community/
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  Announcing Submariner, Multi-Cluster Network Connectivity for Kubernetes
  • sorangutan  

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  Today we are proud to announce Submariner, a new open-source project enabling network connectivity between Kubernetes clusters. We launched the project to provide network connectivity for microservices deployed in multiple Kubernetes clusters that need to communicate with each other. This new solution overcomes barriers to connectivity between Kubernetes clusters and allows for a host of new multi-cluster implementations, such as database replication within Kubernetes across geographic regions and deploying service mesh across clusters.
  
  https://rancher.com/blog/2019/announcing-submariner-multi-cluster-kubernetes-networking/
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  Considerations When Designing Distributed Systems
  • sorangutan  

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  Introduction Today’s applications are marvels of distributed systems development. Each function or service that makes up an application may be executing on a different system, based upon a different system architecture, that is housed in a different geographical location, and written in a different computer language. Components of today’s applications might be hosted on a powerful system carried in the owner’s pocket and communicating with application components or services that are replicated in data centers all over the world.
  
  https://rancher.com/blog/2019/considerations-when-designing-distributed-systems/
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  A Comparison of VMware and Docker
  • sorangutan  

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  Introduction Servers are expensive. And in single-application installations, most servers spend the majority of their time waiting. Making the most of these expensive assets led to virtualization, and making the most of virtualization has led to multiple options for virtualizing applications. VMware and Docker offer competing methods for virtualizing applications. Both technologies work to make the most of limited hardware resources, but they do so in significantly different ways. This post will help you understand how they differ and how those differences affect which scenarios each is best suited for.
  
  https://rancher.com/blog/2019/a-comparison-of-vmware-and-docker/
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  How the kubernetes community responded to the k3s launch
  • sorangutan  

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  What an amazing first week! I’ve been marketing open source technologies for over 15 years. During that time, I’ve been involved in many new product releases. Nothing comes close to the response we’ve had from k3s – http://k3s.io. Judging by the incredible feedback (including over 4,500 GitHub stars in one week), the release of k3s appears to have landed at exactly the right time. Many telcos, utility companies, banks, hotels and manufacturers have been asking us to build a micro Kubernetes distribution that’s easy to install and runs on remote, resource-constrained hardware commonly used in edge and IoT use cases.
  
  https://rancher.com/blog/2019/k3s-diary-one-week-later/
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  Microservices vs. Monolithic Architectures
  • sorangutan  

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  Enterprises are increasingly pressured by competitors and their own customers to get applications working and online quicker while also minimizing development costs. These divergent goals have forced enterprise IT organization to evolve rapidly. After undergoing one forced evolution after another since the 1960s, many are prepared to take the step away from monolithic application architectures to embrace the microservices approach. Figure 1: Architecture differences between traditional monolithic applications and microservicesImage courtesy of BMC
  
  https://rancher.com/blog/2019/microservices-vs-monolithic-architectures/
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  What Do People Love About Rancher?
  • sorangutan  

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  More than 20,000 environments have chosen Rancher as the solution to make the Kubernetes adventure painless in as many ways as possible. More than 200 businesses across finance, health care, military, government, retail, manufacturing, and entertainment verticals have recognized that Rancher simply works better than other solutions. Why is this? Is it really about one feature set versus another feature set, or is it about the freedom and breathing room that come from having a better way?
  
  https://rancher.com/blog/2019/what-do-people-love-about-rancher/
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  Three Ways to Secure Kubernetes From Inside Threats
  • sorangutan  

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  This is the second of a series of three articles focusing on Kubernetes security: the outside attack, the inside attack, and dealing with resource consumption or noisy neighbors. Inherently, Kubernetes clusters are multi-user. As a result, organizations want to ensure that cross-communication is protected via role-based access control, logical isolation and network policies. A container orchestration system such as Kubernetes brings information technology operations and developers (DevOps) closer together, making it easier for teams to collaborate effectively and efficiently with each other.
  
  https://rancher.com/blog/2019/secure-kubernetes-from-inside-threads/
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  Introducing k3s: The Lightweight Kubernetes Distribution Built for the Edge
  • sorangutan  

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  Today Rancher Labs is announcing a new open source project, k3s, which is a lightweight, easy to install Kubernetes distribution geared towards resource-constrained environments and low touch operations. Some use cases in which k3s really shines are edge, ARM, IoT, and CI. The work for k3s started as a component of Rio, an experimental project we started last year. We started seeing real demand for Kubernetes on the edge and a growing interest in k3s itself, so we decided to pull it out of Rio and make it a first-class open source project.
  
  https://rancher.com/blog/2019/2019-02-26-introducing-k3s-the-lightweight-kubernetes-distribution-built-for-the-edge/
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  Deploying Redis Cluster on top of Kubernetes
  • sorangutan  

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  Introduction Redis (which stands for REmote DIctionary Server) is an open source, in-memory datastore, often used as a database, cache or message broker. It can store and manipulate high-level data types like lists, maps, sets, and sorted sets. Because Redis accepts keys in a wide range of formats, operations can be executed on the server, which reduces the client’s workload. It holds its database entirely in memory, only using the disk for persistence.
  
  https://rancher.com/blog/2019/deploying-redis-cluster/
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  Kubernetes: Securing API Access From the Outside Via Role-Based Access and Strong Authentication
  • sorangutan  

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  This is the first of a series of three articles focusing on Kubernetes security: the outside attack, the inside attack, and dealing with resource consumption or noisy neighbors. Kubernetes has become a popular cloud container orchestration system, providing a “platform for automating deployment, scaling and operations of application containers across clusters of hosts,” according to the Cloud Native Computing Foundation (CNCF). However, the general lack of awareness of security issues related to the Kubernetes environment can expose various components to attacks from both inside and outside the network clusters.
  
  https://rancher.com/blog/2019/kubernetes-security-outside-attacks/
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  How Enterprise Kubernetes Benefits from Multi-Cluster Apps
  • sorangutan  

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  There is a lot to love about Kubernetes. It offers one of the best ways to deploy and run applications on a large pool of resources. With its easy-to-use UI and out-of-the-box capabilities like RBAC, monitoring, auditing, logging, and more, Rancher makes it easy to stand up and manage enterprise grade Kubernetes. Using Rancher, IT Operators can point to their cloud provider (AWS, GCP, Azure, etc.) or datacenter and create a cluster with just a few clicks.
  
  https://rancher.com/blog/2019/how-enterprise-kubernetes-benefits-from-multi-cluster-apps/
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  Kubernetes in the Region: Observations and an Offer
  • sorangutan  

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  Since joining Rancher Labs to head up the Australia, New Zealand, and Singapore region, my day revolves around discussing containers/Kubernetes use cases and adoption with many of the top enterprises, DevOps groups, and executives in the area. Not only is this a great learning experience and a fantastic way to meet people, it is also a huge eye opener into the many reasons why Kubernetes adoption is growing so rapidly and what the current challenges are.
  
  https://rancher.com/blog/2019/kubernetes-in-the-region-observations-and-an-offer/
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  Kubernetes vs Docker Swarm: Comparison of Two Container Orchestration Tools
  • sorangutan  

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  With the rise of the containerization technology and increased attention from enterprises and technologists in general, more and more containerized applications have been deployed to the cloud. Moreover, research conducted by 451 Research predicts that the application container market will grow dramatically through 2020, which will continue to expand the number of containerized applications being deployed to the cloud. When the scale and complexity of production-critical containers rises, container orchestration tools come into the picture and become an indispensable part of enterprises’ container management toolbox.
  
  https://rancher.com/blog/2019/kuberntes-versus-docker-swarm/
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  Runc CVE-2019-5736
  • sorangutan  

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  Today CVE-2019-5736 was announced which impacts all known versions of runc. Runc is the underlying component that creates containers in Docker, Kubernetes, and many other container systems. The full details of this vulnerability are available in the Openwall oss-security mailing. Due to the severity of this issue, exploits will not be published for another week, giving people time to patch. The impact of this vulnerability is severe and the approach used to exploit this issue is fairly trivial.
  
  https://rancher.com/blog/2019/runc-cve-2019-5736/
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  Introducing Multi-Cluster Applications in Rancher 2.2 Preview 2
  • sorangutan  

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  Introduction I’m excited to announce the release of Rancher 2.2 Preview 2, which contains a number of powerful features for day two operations on Kubernetes clusters. Please visit our release page or the release notes to learn more about all of the features we shipped today. In this article I introduce one of the features: multi-cluster applications. Read on to learn how this will dramatically reduce your workload and increase the reliability of multi-cluster operations.
  
  https://rancher.com/blog/2019/introducing-multi-cluster-apps/
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  Rancher vs. RKE: What Is the Difference?
  • sorangutan  

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  Introduction When you are using Rancher to manage your Kubernetes clusters, at some point you will encounter the terms Rancher, RKE, and custom cluster. If you are new to Rancher, it can be difficult to understand the difference between and purpose of each of these concepts. In this post, I will go over what each component is used for and how they are used together in parts of the system.
  
  https://rancher.com/blog/2019/2019-02-04-rancher-vs-rke/