Difference Between Kubernetes and OpenShift

OpenShift is compatible with Docker tools like Builder and Registry. You can evaluate the compatibility of OpenShift to determine which frameworks or tools you should integrate with the platform. She docker consulting has written about a range of different topics on various technologies, which include, Splunk, Tensorflow, Selenium, and CEH. She spends most of her time researching on technology, and startups.

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Namespaces are designed for environments with a large user base spread across numerous teams or projects. Namespaces are a technique used to allocate cluster resources to different users. Almost every Kubernetes task can be built, deployed, scaled, monitored, and implemented using OpenShift’s default feature-rich graphical interface, which is available to administrators and developers. To import images from an external authenticated registry, create a secret within the desired project. If an external docker registry requires authentication, create a special secret in the project that uses that registry and then use that secret to perform the docker operations.

Red Hat OpenShift

Manage your Red Hat certifications, view exam history, and download certification-related logos and documents. Add insecure registries to both the registries.search section as well as the registries.insecure section to ensure they are marked as insecure and whitelisted. Any registry added to the registeries.block section will be blocked unless it is also whitelisted by being added to the registries.search section. If the external registry is exposed using certificates for the network traffic, it can be named as a secure registry. Otherwise, traffic between the registry and host is plain text and not encrypted, meaning it is an insecure registry.

The attack surface is reduced by built-in security measures like control groups and kernel namespaces. You can choose your chosen languages and development environments by using the built-in support for Java, Ruby, Node.js, Python, PHP, and Perl while creating your applications. Although the use of container technology is growing in popularity, organizations frequently have trouble deciding which platform to utilize.

Key Features of OpenShift

If you are using a cloud provider, you can detach the disk, destroy the disk, then create a new bigger disk, and attach it to the instance. After the debate on OpenShift vs Kubernetes vs Docker, we can note the hidden relation between them. The symbiotic relationship between these three tools leaves little for comparison. On the contrary, we should try out new ways of implementing them in unison with each other.

  • OpenShift’s extensibility is one of its most significant aspects, as it allows users to support applications built in various languages.
  • You can use docker to create your image though you are not limited and use other vendors like rocket etc for this purpose.
  • With many VMware ESXi servers reaching end of life, users must decide to extend existing support agreements, upgrade to version 7…
  • Now that we have some basic knowledge about OpenShift and Kubernetes, we will look at some of the differences between these platforms.
  • Its accessible Github repository has more stars and forks, rendering it much more prevalent among developers.
  • Kubernetes controllers ensure applications and containers run as specified.
  • A DevOps setting that can support the entire deployment team, including developers and testers.

Also, third party plugins such as CircleCI can help you seamlessly build faster CI/CD pipelines in Kubernetes. Kubernetes has a large active community of developers https://globalcloudteam.com/ who continuously collaborate on refining the platform. OpenShift has a much smaller support community that is limited primarily to Red Hat developers.

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As in Kubernetes, we use kubctl in the same way we use OC command line utility to build and deploy containers on cluster nodes. Docker supports several desktop and cloud environments, which they use to build and deploy applications. Openshift supports several deployment environments like Windows and Linux. Cloud Foundry is an open platform as a service that provides a choice of clouds, developer frameworks, and application services.

openshift vs docker

Self healing – Through self-monitoring, recovery, and healing, Kubernetes restores or replaces containers that fail automatic health checks. Also, you might be reading this after learning Kubernetes no longer supports Docker in kubelets. As an example, Kubernetes is sometimes referred to as an all-in-one containerization platform. There is often confusion surrounding Kubernetes, Docker, and OpenShift, despite 90% of organizations using containers in production. Yet to build and maintain containerized apps in optimal health, you’ll need a robust system. The default containers engine for OpenShift 4 is transitioning from Docker with CRI-O, which provides a small, simple runtime which moves in lockstep with Kubernetes.

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Multi-cloud EnablementOpenShift is accessible on Azure as well as a dedicated online platform. External extensions or tools, such as Jenkins, are supported for CI/CD in Docker and must be deployed separately. Users that are already familiar with Docker Compose should use Swarm. The ability to create applications using Docker Engine and Docker Datacenter remains with DevOps professionals.

openshift vs docker

In light of the above, when developers run into Kubernetes problems, they must wait for their questions to be answered, relying on the experience of other developers on discussion forums. Red Hat engineers are available to support OpenShift users around the clock. Since Kubernetes is an open-source project, a sizable and engaged developer community constantly works together to improve the platform.


In order to be able to pull images from an external registry, it is required to trust the registry certificates, otherwise the pull image operation fails. Docker can be configured to block operations from external registries by configuring the registries and block_registries flags for the dockerdaemon. As more and more applications move to the cloud, their architectures and distributions continue to change. With the change, comes the need for tools and skills that can help in managing distributed topology across the cloud.

openshift vs docker

You can implement self-service provisioning for computing resources, provision containers and pull code from the version control system. Docker Hub is a software-as-a-service tool that allows users to share containerized applications via a centralized library. It boasts over 100,000 publicly-available applications, in addition to private and public container registries.

OpenShift vs Kubernetes: The Unfair Battle

A Linux container is a set of processes isolated from the system, running from a distinct image that provides all the files necessary to support the processes. Openshift is another popular Container management tool developed by RedHat. The, One of the popular flagship products of OpenShift is OpenShift Container Platform. So, This platform is an on-premises Platform as a Service built with Docker Container and the Kubernetes. To integrate the OpenShift Container Platform registry, all previous sections apply.