Kubernetes is an open-source container cluster manager.
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Red Hat OpenShift
Score 9.2 out of 10
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OpenShift is Red Hat's Cloud Computing Platform as a Service (PaaS) offering. OpenShift is an application platform in the cloud where application developers and teams can build, test, deploy, and run their applications.
I used OpenShift v2 - which was pre-Kubernetes. (It now uses Kubernetes under the hood - but keeps it fairly hidden). Kubernetes was a ton more stable and easier to use. No more custom CLI to use in order to script together deployments. No more messy ‘push your entire code …
Kubernetes cluster is cable to manage multiple nodes on on-premises or cloud infrastructure. In Kubernetes, we can easily add new nodes when ever required. We can easily update and rollback our application hosted on Kubernetes with the help of rolling and blue green deployment. …
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Chose Kubernetes
I didn't have too much experience or exposure to OpenShift but I do remember that in certain areas our organization found Kubernetes to be more useful and met our needs in comparison to OpenShift. Although I can't compare, I think it's easier to customize Kubernetes because of …
Kubernetes is powerful, but managing it yourself takes time. Red Hat OpenShift offers a user-friendly interface, built-in developer tools, and security features, all on top of Kubernetes. It simplifies management and gets you developing faster with all best practices and …
Our developer community is using Red Hat OpenShift for years and they are familiar and comfortable with the product. Red Hat OpenShift UI makes it easier for new developers to adopt without knowing much of Kubernetes. Our platform team feels it’s easy to mange the cluster and …
The other platforms are cloud based, and less relevant when you have to choose an on prem scenario. Red Hat OpenShift encapsulates Kubernetes and provides more, so that you have an all-in-one platform instead of dealing with various separate services. [Red Hat] OpenShift is …
They are all nice products, and they all have their place. But I'm convinced that from now on, instead of instantly just creating a Kubernetes cluster, I'm going to start seeing if Red Hat OpenShift is the best answer based on the project's overall needs. It's truly made that …
We have replaced our local Kubernetes with open shift entirely and it is by far the better product. Compared to Amazon Elastic Kubernetes Service, it can be more difficult to configure. We currently utilize both (open shift onsite and EKS remotely) and find advantages of …
OpenShift is more flexible and can be deployed On-prem and on the cloud. Openshift was easier for the development teams to get up to speed and understand k8 terminology.
Red Hat OpenShift is a more complete and integrated platform, with lots of out of the box components that the other platforms don't have, and customers need to stack lots of other software in order to have monitoring, cost management, log management, user policies governance, …
K3S supports constrained resource environments but does not have the governance controls needed for our company Rancher RK2 is being actively developed for constrained environments where Red Hat OpenShift is too heavy.
K8s should be avoided - If your application works well without being converted into microservices-based architecture & fits correctly in a VM, needs less scaling, have a fixed traffic pattern then it is better to keep away from Kubernetes. Otherwise, the operational challenges & technical expertise will add a lot to the OPEX. Also, if you're the one who thinks that containers consume fewer resources as compared to VMs then this is not true. As soon as you convert your application to a microservice-based architecture, a lot of components will add up, shooting your resource consumption even higher than VMs so, please beware. Kubernetes is a good choice - When the application needs quick scaling, is already in microservice-based architecture, has no fixed traffic pattern, most of the employees already have desired skills.
Stateful pods and DBs can be challenging to manage in OpenShifts. Depending on the configuration, lost deployments could result in data loss. The best use case for OpenShifts is any instance where agile and quick deployments are needed. Thanks to the OCP git runner, we can implement new builds across all environments quickly.
One thing is the way how it works with the GitHubs model on an enterprise business, how the hub and spoke topology works. Hub cluster topology works the way how there is a governance model to enforce policies. The R back models, the Red Hat OpenShift virtualization that supports the cube board and developer workspace is one big feature within. So yes, these are all some features I would call out.
Local development, Kubernetes does tend to be a bit complicated and unnecessary in environments where all development is done locally.
The need for add-ons, Helm is almost required when running Kubernetes. This brings a whole new tool to manage and learn before a developer can really start to use Kubernetes effectively.
Finicy configmap schemes. Kubernetes configmaps often have environment breaking hangups. The fail safes surrounding configmaps are sadly lacking.
So I don't know that this is a specific disadvantage for Red Hat OpenShift. It's a challenge for anything that Kubernetes face is. There's an extremely large learning curve associated with it and once you get to the point where you're comfortable with it, it's really not bad. But beating that learning curve is a challenge. I've done a couple presentations on our implementation of Red Hat OpenShift at various conferences and one of the slides I always have in there is a tweet from years ago that said, "I tried to teach somebody Kubernetes once. Now neither of us knows what it is."
OpenShift is really easy of use through its management console. OpenShift gives a very large flexibility through many inbuilt functionalities, all gathered in the same place (it's a very convenient tool to learn DevOps technics hands on) OpenShift is an ideal integrated development / deployment platform for containers
It is an eminently usable platform. However, its popularity is overshadowed by its complexity. To properly leverage the capabilities and possibilities of Kubernetes as a platform, you need to have excellent understanding of your use case, even better understanding of whether you even need Kubernetes, and if yes - be ready to invest in good engineering support for the platform itself
The virtualization part takes some getting used to it you are coming from a more traditional hypervisor. Customization options are not intuitive to these users. The process should be more clear. Perhaps a guide to Openshift Virtualization for users of RHV, VMware, etc. would ease this transition into the new platform
Redhat openshift is generally reliable and available platform, it ensures high availability for most the situations. in fact the product where we put openshift in a box, we ensure that the availability is also happening at node and network level and also at storage level, so some of the factors that are outside of Openshift realm are also working in HA manner.
I've not noticed any significant performance impacts with Red Hat OpenShift. I think the development team has put a lot of effort into ensuring that it is performant. And so performance typically is not a major concern for us with Red Hat OpenShift.
Every time we need to get support all the Red Hat team move forward looking to solve the problem. Sometimes this was not easy and requires the scalation to product team, and we always get a response. Most of the minor issues were solved with the information from access.redhat.com
I was not involved in the in person training, so i can not answer this question, but the team in my org worked directly with Openshift and able to get the in person training done easily, i did not hear problem or complain in this space, so i hope things happen seamlessly without any issue.
We went thru the training material on RH webesite, i think its very descriptive and the handson lab sesssions are very useful. It would be good to create more short duration videos covering one single aspect of openshift, this wll keep the interest and also it breaks down the complexity to reasonable chunks.
Most of the required features for any orchestration tool or framework, which is provided by Kubernetes. After understanding all modules and features of the K8S, it is the best fit for us as compared with others out there.
Our developer community is using Red Hat OpenShift for years and they are familiar and comfortable with the product. Red Hat OpenShift UI makes it easier for new developers to adopt without knowing much of Kubernetes. Our platform team feels it’s easy to mange the cluster and upgrades. Other options has more operation overhead and less friendly to developers not have in-depth knowledge of Kubernetes.
It's easy to understand what are being billed and what's included in each type of subscription. Same with the support (Std or Premium) you know exactly what to expect when you need to use it. The "core" unit approach on the subscription made really simple to scale and carry the workloads from one site to another.
This is a great platform to deployment container applications designed for multiple use cases. Its reasonably scalable platform, that can host multiple instances of applications, which can seamlessly handle the node and pod failure, if they are configured properly. There should be some scalability best practices guide would be very useful