On Kubernetes however you can use different enhancements - my favorite one is an integration with cert-manager that allows you to automate management of SSL certificates. comparison, It has some drawbacks, but also one significant advantage over Kubernetes Deployment - you can use hooks to prepare your environment for an update - e.g. In OpenShift v2, applications were required to have at least one web framework with one git repo. OpenShift includes Kubernetes, and more… What is Kubernetes? Container Engine takes care of provisioning and maintaining the underlying virtual machines and operational logistics like logging, monitoring, and health management. Let’s dive in and check what are the real differences between those two. UPDATED on 30.8.2019: Added information on CodeReady Containers for running single OpenShift node.. On Kubernetes, however, you have much more choice, as Ingress is an interface implemented by multiple servers starting from most popular nginx, traefik, AWS ELB/ALB, GCE, Kong and others including HAproxy as well. Additionally you can test your single node installations using the following methods: Kubernetes has become a standard and is available on more platforms than OpenShift. Deployment, however, is better when dealing with multiple, concurrent updates - DeploymentConfig doesn’t support concurrent updates at all and in Kubernetes you can have many of them and it will manage to scale them properly. So whichever you choose you’ll get tons of features making your life easier and your journey will begin towards cloud native world. OpenShift has available as a dedicated, online platform and on Azure. Red Hat created OpenShift long before Kubernetes project was found and from the start, it was a PaaS platform. Let’s face it - dashboard is not a first-class citizen among many Kubernetes projects. They are used to specify the characteristics of an object like the version, tier, etc. After all they make it possible to deploy and manage our containerized apps in a way that was only available for unicorns like Google. It is performed by a dedicated Operator software and the whole configuration is kept in ConfigMaps inside a cluster (not in files on master servers like in version 3). On the other hand, OpenShift is detailed as "Red Hat's free Platform as a Service (PaaS) for hosting Java, PHP, Ruby, Python, Node.js, and Perl apps". To better understand what OpenShift is and how it differs from Kubernetes, we first need to understand what Kubernetes is.. We often see what the classic Kubernetes suite can do. However, with the new, more flexible and faster installer we can expect that OpenShift will be a good alternative for Kubernetes, also in the cloud. Bare metal installations are still possible but currently they require many manual steps. And redesigned version available in OpenShift 4: Now I’m not saying it’s the best web interface, but I consider it as one of the best features of OpenShift. support for source-to-image that allows you to create a custom jenkins image - a few files with plugins list, custom configuration and other resources, enable you to easily update it when a source image changes (that part also can be automated!) Some of the features offered by Google Kubernetes Engine are: On the other hand, OpenShift provides the following key features: "Powered by kubernetes" is the top reason why over 15 developers like Google Kubernetes Engine, while over 95 developers mention "Good free plan" as the leading cause for choosing OpenShift. It’s a nifty feature that is hard to implement with Deployment (and no, InitContainers are not the same, as it’s hard to coordinate it with many instances running). Red Hat OpenShift is focused on security at every level of the container stack and throughout the application lifecycle. When you’re starting learning and using Kubernetes for the first time you discover that there is this specia... How to modify containers without rebuilding their image, The challenges of multi-cloud environments, Why Vault and Kubernetes is the perfect couple, You need to renew your OpenShift subscription for your cluster and you pay more when your cluster grows, Kubernetes has many distributions, but it’s a project and if something bad happens you can count mostly on community or external experts (in some cases they might be sometimes better than Red Hat support :-) ), Kubernetes has many releases per year (4 actually), OpenShift has also many releases, but it falls behind Kubernetes release schedule - version, As a product OpenShift subscription includes CloudForms (only in version 3) that enhance it with its features (e.g. And when it was finally released we almost got a new product. It can be overwhelming and personally I don’t use dashboard when working with Kubernetes, as it doesn’t bring much more information than command line and you are not able to change most of the things - it’s almost like read-only panel. Definitely “secure by default” approach in OpenShift. How the benefits of OpenShift … Platform9 Managed Kubernetes (PMK) is the industry’s only SaaS-based, continuously managed Kubernetes service that runs anywhere and guarantees 99.9% uptime SLA with remote monitoring, healing, upgrading, and security patching.. OpenShift Online and OpenShift Dedicated are hosted services running only on AWS and do not let you leverage your existing on-premises infrastructure or edge … EKS vs GKE vs AKS - April 2020 Updates Mar 31, 2020 EKS Networking Best Practices for Security and Operation Mar 30, 2020 Securing EKS Cluster Add-ons: Dashboard, Fargate, EC2 Components, and More Mar 24, 2020 When this all IT revolution began, we started with one computer that was the size of a room, then we invented server rooms, we started dividing servers into ... Kubectl is the new ssh databases, queue systems). When I initially explored OpenShift(circa version 3.6), I had a fair idea that it had many components in addition to Kubernetes, but wasn’t sure what it built on top of it. OpenShift is extensible with a customizable cartridge functionality that allows developers to add any other language they wish. UPDATED on 30.8.2019: Added information on CodeReady Containers for running single OpenShift node. Built-in support for Node.js, Ruby, Python, PHP, Perl, and Java (the standard in today's Enterprise). Declarative management - Use declarative syntax to define your application requirements. Do you know how “easy” it is to change a tag for an image in a container registry? Both are great, Ingress is newer and less mature than Router, but they do a great job. and use Jekins in a fully, synchronization of secret object from a namespace it’s running on - different secrets are synchronized with Jenkins credentials so that username/password, ssh key or secret text are available in your jobs without ever creating them in Jenkins, last but not least - pipeline definition is a separate. While OpenShift is a popular product, Kubernetes is a framework or an open-source project. configurable chargeback, monitoring, central provisioning etc. OpenShift is Red Hat's Cloud Computing Platform as a Service (PaaS) offering. Containers are still new and having a complex, sophisticated interface for managing them makes it even harder to learn and adapt. Red Hat ® OpenShift ® is more than just Kubernetes. It depends on whether you’d rather pay and use support and all the features that come with a product (OpenShift) rather than project (Kubernetes, but also OKD) with self-support model. Kubernetes is accessible on three of them – GKE on Google GCP, EKS on Amazon AWS, and AKS on Microsoft Azure. Before you get stuck in an indecisive limbo, read this post to find out. Container management platforms such as Kubernetes and OpenShift may be well-known, though possibly not as well understood. Google Kubernetes Engine vs OpenShift: What are the differences? Global Availability: All three providers have their offering available in most regions globally. OpenShift has a similar object called DeploymentConfig implemented not by controllers, but rather by sophisticated logic based on dedicated pods controlling whole process. Kubernetes, on the other hand, can be installed almost on any linux distribution such as Debian, Ubuntu (most popular ones) and many others. kubeadm, kube-spray, kops), some of them are better for cloud, some are more universal and complex too and it’s up to you to decide how you want to install your cluster and upgrade it (if it’s supported by the tool). Containers make it easy to deploy applications across environments. For hesitant ones there’s a OKD project with almost all OpenShift features - you can later might decide to migrate to a commercial product or stick with OKD. Helm is so much better, but its current architecture (Tiller component installed as Pod with huge permissions) isn’t compatible with more strict security polices in OpenShift. It’s a result and implication of acquisition of CoreOS by Red Hat announced at the beginning of 2018. Essentially, OpenShift relies 100% on Kubernetes, but as a Kubernetes distribution, it comes with everything needed for a Kubernetes cluster. If you’re okay with self-support then of course there’s Kubernetes with plenty of side projects, whole ecosystem and fantastic community. Here's a link to OpenShift's open source repository on GitHub. The final thing concerning the opportunity of choice for your stage is administrations accessible on major cloud stages. ), OKD version is free to use and includes most of the features of its commercial product, but you cannot buy a support nor you cannot use Red Hat based official images, Red Hat Enterprise Linux (RHEL) or Red Hat Atomic on OpenShift 3, Red Hat CoreOS (required by control plane - master and infra server, default for compute nodes) and optionally RHEL for compute nodes only on OpenShift 4, OpenShift 3 - manually following reference guides (yes, you need to install it using ssh, yum, vim and other old-school tools) or with, OpenShift 4 - has a simplified and easier to use installer that currently supports AWS and vSphere. If you’re interested in OpenShift 4 please check out also my honest review of it. For OpenShift there’s an item called OpenShift Online, OpenShift Devoted, and OpenShift on Purplish blue. Kubernetes and Docker are supported by public clouds including Google Cloud, EKA on AWS and AKS on Azure. We even got version 4.1 directly because Red Hat decided not to release version 4.0. Should you go with OpenShift or Kubernetes? That’s okay for a small dev/test setup, but in real life, you want to have some level of permissions - even if it’s sometimes hard to learn and comprehend (because it is at first). Sorry Kubernetes, but people (including me!) The subscription is inclusive of CloudForms, which further helps in enhancing the features of the product. In this article, I’m describing real differences between OpenShift and Kubernetes. Some of you may think I’m a total OpenShift fanboy, but in reality, I love working with both - OpenShift and Kubernetes. Here’s a list of my favorite features of integrated Jenkins on OpenShift: Once again an additional feature of OpenShift makes it easy to deploy your apps with CI/CD pipelines. It is also often used with Kubernetes clusters to build container images, perform Continuous Integration tasks on them and deploy them as containers on multiple environments with Continuous Deployment pipelines. It’s often confusing, as Red Hat tends to describe it as PaaS, sometimes hiding the fact that Kubernetes is an integral part of OpenShift with more features built around it. You are comparing apples to oranges. OpenShift vs Kubernetes Oct 15 2018. Security & Authentication OpenShift is on its second incarnation after the previous version was reinvented by putting Kubernetes at the core. That’s why people are sometimes confused and angry because they cannot run simple apps like they used to on Kubernetes. As the last part I want to emphasize the difference when it comes to user experience. Actually projects are namespaces with few features. The master uses the information from node objects to validate nodes with health checks. Also, RBAC was an integral part of OpenShift since many releases while there are some people who use Kubernetes without RBAC security. Better ops - Give ops a better system, starting with a managed compute cluster. As a part of OpenShift you can install additional component such as. Summarizing K8s vs OpenShift Both Kubernetes and OpenShift are excellent options for large-scale deployment of containerized applications. Available on GKE on Google GCP, EKS on Amazon AWS and AKS on Microsoft Azure: Red Hat offers OpenShift Online and OpenShift Dedicated as multi- and single-tenant managed offerings on AWS. In a similar way you could provide default quotas or LimitRange objects and make your new projects pre-configured according to your organization rules. In the era of serverless computing and container technology, containers have become highly popular for a long time now.With the increase in popularity, there is an increase in the complexity levels of large containerized applications. Last part is authentication and authorization model. Each release includes security, performance, and defect fixes, validated and tested integrations for third-party plugins, and enterprise lifecycle support. When it comes to installation when choosing OpenShift you can install it on multiple platforms depending on the version: Kubernetes on the other hand has many installation tools available (e.g. If you decide to install OpenShift you need to use either. OpenShift is a platform as a service (PaaS) from Red Hat that is built on Docker and Kubernetes. I think you didn't get the idea of Requests vs Limits, I would recommend you take a look on the docs before you take that decision.. OpenShift DeploymentConfig has more options and support ImageStream so I’m choosing it over classic Kubernetes Deployment. That’s why I love ImageStreams and here are main reasons and features: If you’re interested in more details you might want to check my article. The (not so) secret flaws of Kubernetes Secrets Personally, I think HAproxy in OpenShift is much more mature, although doesn’t have as much features as some Ingress implementations. Previously it was called OpenShift Origin, but some “clever” folks at Red Hat came up with this new name which supposes to mean “The Origin Community Distribution of Kubernetes that powers Red Hat OpenShift” (?). That’s why I find OpenShift versions of both command line and web interfaces superior over Kubernetes ones. https://dzone.com/articles/kubernetes-vs-openshift-what-is-the-difference It makes deployment harder on OpenShift and in most cases you need some external wrappers (like I do) to make it more flexible and useful in more complex scenarios than just simple, one pod application deployments. It’s a big step towards compatibility with configuration prepared for Kubernetes that now can be launched on OpenShift without any modifications. When I started my adventure with linux systems the first tool I had to get to know was ssh. So if you need a support for Kubernetes one option would be to buy subscription for OpenShift. To name just the most important functions: Operations tools: an official and supported way via Ansible allows the entire life cycle of OpenShift to be executed. Openshift vs Tectonic vs Vanilla Kubernetes Vendor Comparison. Kubernetes Vs. OpenShift: The Verdict. It’s probably because of the target group for OpenShift product, but indeed default policies are more strict there than on Kubernetes. love and need fancy web console :-). OpenShift is an open source tool with 913 GitHub stars and 561 GitHub forks. Jun 11th, 2019. ... (GKE) on Google Cloud Platform. While searching for OpenShift vs Kubernetes, one of the major differences is that one is a product, and another is a project. Similarly like with Ingress, OpenShift chose to have a different way of managing deployments. For someone coming straight from Kubernetes world who used Helm and its charts, OpenShift templates as the main method of deployment whole stack of resources is just too simple. Heads up! Multi-cloud Enablement. GKE On-Prem Support; Istio on GKE Support; On the other hand, OpenShift provides the following key features: Built-in support for Node.js, Ruby, Python, PHP, Perl, and Java (the standard in today's Enterprise) OpenShift is extensible with a customizable cartridge functionality that allows developers to add any other language they wish. one time. GKE, EKS, and AKS have 1.14 as their regular stable release, though GKE has “rapid” stream that runs 1.15. articles. So now in OpenShift we have a Route objects which do almost the same job as Ingress in Kubernetes. Dashboard has a login window where you provide a token and honestly is confusing, especially for beginners. Learn more. Red Hat OpenShift is a hybrid cloud, enterprise Kubernetes platform. Red Hat had needed an automated reverse proxy solution for containers running on OpenShift long before Kubernetes came up with Ingress. OpenShift allows the users to install the product that offers paid support with a subscription. We know that it can efficiently deploy applications through the use of Deployments, ReplicaSet, Pods, containers and so on. 10 most important differences between OpenShift and Kubernetes 16 minute read UPDATED on 10.6.2019 (after the release of OpenShift 4.1): Added information on OpenShift 4.. Helm charts use sophisticated templates and package versioning that OpenShift templates are missing. Without external tools such as skopeo you need to download the whole image, change it locally and push it back. As an interesting fact, I want to mention that starting from OpenShift 3.10 Kubernetes Ingress objects are recognized by OpenShift and are translated/implemented by.. a router. OAuth authentication - use your OpenShift login to log in to Jenkins and depending on the role you have on the project you get one of three jenkins role assigned (view, edit or admin). Docker Swarm vs Kubernetes vs OpenShift . Also promoting applications by changing container tags and updating Deployment object definition is not a pleasant way to do it. There’s no clear winner here. However, with more operators available on OperatorHub, OpenShift 4 will gain an advantage. Most of all OpenShift web console is very useful, much more than Kubernetes dashboard. OpenShift supports frameworks ranging from Spring, to Rails, to Play. You cannot install it on other linux distributions. Let’s start with cli. OpenShift has a pre-integrated Jenkins framework so that it is easy to set up CI/CD. A notable exception is that EKS is not available in the AWS government cloud; AKS, however, is in at least one Azure government cloud. This a minor difference, but on OpenShift there are projects which are nothing more than just Kubernetes namespaces with additional features. OpenShift is an application platform in the cloud where application developers and teams can build, test, deploy, and run their applications. Kubernetes Helm is more flexible and upcoming version 3 will make it more secure and applicable in more serious projects. Kubernetes is an open source project (or even a framework), while OpenShift is a product that comes in many variants. Currently a few roles (RoleBinding objects to be precise) are created alongside with a project, but you can modify default project template and use it to provision other objects. OpenShift Container Platform creates nodes from a cloud provider, physical systems, or virtual systems. Both Kubernetes and OpenShift are popular container management systems, and each has its unique features and benefits. Container Engine will actively manage your application, ensuring your containers are running and scheduling additional as needed. And yes - you can achieve the same on Kubernetes as well, but it requires a lot of work. Origin also powers OpenShift Container Platform, which is the commercially supported version of Origin. In Kubernetes there are Deployment objects (you can also use them in OpenShift with all other Kubernetes objects as well) responsible for updating pods in a rolling update fashion and is implemented internally in controllers. Kubernetes interacts with node objects that are a representation of those nodes. In OpenShift you actually don’t have a choice and you have to use it and learn it on the way as you deploy more and more apps on it. For example, most of container images available on Docker Hub won’t run on OpenShift, as it forbids to run a container as root and even many of official images don’t meet this requirement. And after you saw this. you would probably be discouraged as I did when I saw it for the first time (it was a couple of years ago, but it hasn’t changed a lot unfortunately). Now this is something that I really miss in Kubernetes and personally my favourite feature of OpenShift. There’s an easy way to disable that policy, but still it shows a different approach to security. Google Kubernetes Engine can be classified as a tool in the "Containers as a Service" category, while OpenShift is grouped under "Platform as a Service". Also it requires internet connections so, Logging stack based on EFK (ElasticSearch, Fluentd, Kibana), with ImageStream you upload a container image once and then you manage it’s, with triggers you can achieve even more - having, you can hide the origin of the image by exposing it as an ImageStream - e.g. Google Kubernetes Engine vs OpenShift: What are the differences? Out of the box containers don’t run as root, and they have locked down every interface with auth. For OpenShift there’s a product called OpenShift Online, OpenShift Dedicatedand OpenShift on Azure. There are multiple CI/CD software solutions available, but Jenkins is still the biggest, most universal, generic and mature solution. by changing database schema. We've seen everything from Clojure to Cobol running on OpenShift. Since it’s so popular then having it as a builtin part of OpenShift makes the whole CI/CD a lot less painful. Containers are a beautiful piece of technology that ease the development of modern applications and also the maintenance of modern environments. OpenShift is a containerization solution developed by Red Hat. UPDATED on 10.6.2019 (after the release of OpenShift 4.1): Added information on OpenShift 4. The main difference is that routes are implemented by good, old HAproxy that can be replaced by commercial solution based on F5 BIG-IP. It will become eventually the best way to deploy services on OpenShift (and Kubernetes too). There’s also no denying that OpenShift is the gold standard for security hardened Kubernetes. The last thing regarding freedom of choice for your platform are services available on major cloud platforms. OpenShift 4 has an integrated OperatorHub which is becoming the preferred way for provisioning services (i.e. There are some other options available in OpenShift 3 such as Automation Broker (formerly Ansible Service Broker) or Service Catalog, but they can be installed on Kubernetes while Helm is not a (supported) option on OpenShift. A good example would be network policies that close your project for external traffic so that is isolated and secure by default - if you want to permit some kind of traffic you would do so by creating additional policies explicitly. Kubernetes (K8s) is a prevalent open-source system for automating the deployment, scaling, and management of containerized applications. The Kubernetes Project vs an OpenShift Product. OpenShift. Kubernetes is an open source, container as a service (CaaS) project originating from Google. So which one is better you may ask? Docker support - Improve the predictability of your deployments with Docker containers. OpenShift has been often called as “Enterprise Kubernetes” by its vendor - Red Hat. Tags: Because OpenShift natively integrates Google technology such as GKE, your apps are built and deployed on the same infrastructure and orchestrations as apps, such as YouTube, Google Drive, and more. Kubernetes uses labels which are key-value pairs that are attached to objects, usually pods. That makes permissions management easier and can bring additional features like in EFK where you see logs only from namespaces/projects you have access to. Evan Klein. OpenShift 4 includes pretty fast installer (7 node cluster in 50 min on GCP) based on Terraform vs self-provisioning in GKE I'd appreciate if anyone familiar with this subject could correct me if my calculations were wrong or if I forgot to mention any additional added value that OpenShift can bring to justify an additional $24K/yr. Red Hat is among the top contributors to Kubernetes project. Kubernetes is available on three of them - GKE on Google GCP, EKS on Amazon AWS anf AKS on Microsoft Azure. In a brief explanation, Request is how much resource will be virtually allocated to the container, it is a guarantee that you can use it when you need, does not mean it keeps reserved exclusively to the container. Besides trivial things such as description and display name (trust me - they can be helpful when you have dozens of them), projects add some default objects. Kubernetes vs OpenShift: Key Differences Compared With serverless computing and container technology being at the forefront, the demand for container technology has risen considerably. Then, one must learn more about each and every feature and working architecture of container orchestration tools. But let’s forget about names for a while and focus on what are implications of that. By switching from their custom solution (they used something they called gears instead of containers) to Kubernetes it became easier to bring more features and one of the most exciting is integrated Jenkins. Conclusion. According to the StackShare community, Google Kubernetes Engine has a broader approval, being mentioned in 248 company stacks & 252 developers stacks; compared to OpenShift, which is listed in 76 company stacks and 358 developer stacks. First of all it has a login window, something that simple and trivial and I know it shouldn’t be a feature, but have you seen Kubernetes “login window”? Hopefully, it will change in future with version 3 of Helm where there will be no Tiller component that makes it hard to make secure. Container Engine takes care of provisioning and maintaining the underlying virtual machine cluster, scaling your application, and operational logistics like logging, monitoring, and health management. While Kubernetes helps automate application deployment, scaling, and operations, OpenShift is the container platform that works with Kubernetes to help applications run more efficiently. In OpenShift 4 it finally works as a Single-Sign-On (in version 3 you have to login to a service each time using the same credentials). Kubernetes as a Service: GKE vs. AKS vs. EKS. No more manual actions for issuing and renewal of certificates and additionally you can use trusted CA for free thanks to integration with Letsencrypt!
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