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Is there a better alternative to Kubernetes? We share the top Kubernetes alternatives available for you right now.
Kubernetes (K8s) has taken the world of container management by storm with features like horizontal scaling, self-healing, and automated rollbacks. Adding new capabilities to K8s clusters is also possible without modifying upstream code.
You can also orchestrate enterprise-grade containerized applications with Kubernetes in almost any environment.
But Kubernetes is far from perfect.
It can be difficult and time-consuming to migrate to Kubernetes. The job requires advanced skills and constant monitoring. Similarly, Kubernetes can be overkill for smaller deployments, shockingly expensive to deploy and operate, and difficult to maintain.
Maybe you've had enough of K8s after burning a hole in your cloud budget. Perhaps K3s, the lightweight version of Kubernetes, may not be suitable for your needs. Where do you go from here?
You can replace Kubernetes completely or partially. Here are the tools you need.
While CloudZero is not an alternative to Kubernetes, or even a container management tool, it helps you understand and optimize your K8s costs down to the pod level. So, if you're looking to keep using Kubernetes but need more cost control, CloudZero is a perfect fit.
CloudZero’s Kubernetes cost analysis helps you:
If you prefer to swap K8s with an easier-to-use alternative to Kubernetes, here are ten good choices. We will organize these alternatives into four categories:
Let's take a look at each category.
PaaS empowers customers to create apps and run them on the cloud provider's runtime environment, which can be accessed via APIs. Cloud providers typically handle most of the work, such as ensuring service availability.
In addition, they offer improved monitoring, security, networking, and other management capabilities over plain Kubernetes.
These K8s competitors include:
Docker is a suite of Platform-as-a-Service (PaaS) tools that use OS-level virtualization to run apps or software in packages (containers) — although, like K8s, Docker isn’t purely PaaS, IaaS, or SaaS. These packages have everything the app needs to run, such as libraries, code, system tools, and runtime. Docker enables you to build, test, and deploy apps quickly and is easier to manage than Kubernetes.
Although Docker seized being the runtime for Kubernetes (from version 1.23), you can still run your Docker build images in a K8s cluster. Docker is also synonymous with building containers (containerization), came before K8s, and is more user-friendly than Kubernetes. Yet it has its own clustering and container orchestration tool, Docker Swarm, making it a top alternative to K8s.
Also, Docker Compose lets you use YAML files to define the app's services and uses a single command to execute the build and start-up sequence of all the containers. Docker Volume enables data persistence independently, so data persists even after containers are deleted or recreated.
For customers interested in Kubernetes-like features, RedHat provides several tools. OpenShift offers products for AWS, Azure, IBM Cloud, as well as a dedicated edition. It's self-service edition includes OpenShift Platform Plus, OpenShift Container Platform, and OpenShift Kubernetes Engine.
RedHat OpenShift Container Platform provides a hybrid platform for developing and scaling containerized applications. It blends the Red Hat Enterprise Linux (RHEL) and Kubernetes with Docker-based Linux containers.
It also features consistent support for Docker's Red Hat API, orchestration, networking, scheduling, and serverless deployment tools. You can also build deployment routes, simulate failures, and configure circuit breakers via service mesh.
In addition, you can use OpenShift as a Container-as-a-Service platform, enabling you to use pre-existing container images for deployments — provided your images meet the OpenShift Container Initiative (OCI) requirements.
Rancher is an enterprise-grade platform for running containerized workloads. Rancher enables you to deliver Kubernetes as a service, while also marketing itself as an enterprise Kubernetes management platform.
An open-source project in GitHub, Nomad also includes tools for image management, container orchestration, integrated security, and roadmapping .
Whether you're using Rancher on-premises, bare metal, public or private clouds, you can run your containers anywhere.
Besides container load balancing and cross-host networking, it also supports persistent storage services, seamless user management, and multi-cloud orchestration.
If you want a platform that can handle both cloud-native and on-prem deployments, containerized and non-containerized applications, or do both efficiently, Onteon may help.
It is a software suite for orchestrating, scaling, communicating, and managing cloud-native, legacy, and on-premise applications.
Onteon also runs on a hybrid cloud setup and supports Docker-style container orchestration. Unique Onteon features include built-in networking, security, and performance monitoring beyond what's available on plain K8s.
Also expect distributed load balancing, intelligent health checking, and service repository, among others.
CaaS offer cloud-based platforms for uploading, organizing, running, scaling, and managing containers via container-based virtualization.
CaaS relieves software development teams of the burden of managing, deploying, and monitoring the underlying infrastructure that runs containers.
These platforms include:
AWS Fargate can be helpful if you use Amazon Web Services (AWS) extensively, but don't want to use AWS's fully managed container service or actively manage AWS container infrastructure using EC2 instances.
AWS Fargate is a serverless compute engine that lets you use Amazon ECS tasks and services to package your app in containers, select the operating system, CPU and memory needs, specify networking and IAM policies, and begin running the application.
In Fargate, each task has its own isolation boundary, so it does not share kernel, CPU, or memory resources, nor does it share the elastic network interface.
Cloud Run is a serverless, managed compute platform where you can use Go,.NET, Node.js, Python, Java, and even Ruby to build, deploy, and run containers directly atop Google's highly scalable infrastructure.
You can even use the source-based deployment approach to automate container building, following the best practices for the specific language you use.
With Cloud Run, you can execute your code continuously, either as a job or service. Both will run in the same environment and can utilize the same integrations with other Google Cloud services, enabling you to build full-featured applications.
Cloud Run handles most operations, configuration, and scaling tasks, including creating a cluster or managing infrastructure. The platform is ideal for stateless containerized microservices that do not demand Kubernetes features like namespaces, node allocation and management, as well as co-location of containers in pods (sidecars).
Other examples of CaaS platforms include Azure Container Instances and Amazon Elastic Container Service (ECS).
If you want to remove much of the handy work of deploying and maintaining Kubernetes, these services provide just that. The third-party providers handle some or all of the work required for successfully setting up and operating your K8s clusters. These include:
Google first developed Kubernetes internally as Borg, was the first major provider to offer it as a managed service, and now offers it as a powerful, managed service through GKE.
It facilitates the configuration, resizing, updating, upgrading, and debugging of container clusters. GKE also includes a replication controller for running multiple pods simultaneously.
GKE features empowers you to manage configurations, secure containers in sandbox environments, connect multiple nodes to a cluster, and develop applications with attached persistent storage.
You can also set resource limits as an admin. GKE also works natively with the Google Cloud CLI.
If you use the second-most popular cloud provider today, AWS, EKS provides a managed container service for deploying Kubernetes apps on-premise or in the cloud.
It enables you to start, run, and scale them without worrying much about the underlying infrastructure, such as building and maintaining nodes and a K8s control plane.
The EKS platform is also suitable if you want to run advanced machine learning models, security, and basic Kubernetes cost monitoring in a single place.
Other Kubernetes-as-a-Service or managed Kubernetes services include Azure Kubernetes Service (AKS), VMWare Tanzu Kubernetes Grid, Linode Kubernetes Engine, Oracle Container Engine for Kubernetes, and the DigitalOcean managed Kubernetes service.
K8s is best known as a robust container orchestration platform. The following services provide more user-friendly container orchestration.
Using Nomad, you can deploy Docker, non-containerized, microservices, and batch application workloads more easily than Kubernetes. Nomad makes clustering a breeze, for example. You can convert your Kubernetes deployment manifest into Nomad job files and test it.
Nomad is also a single binary, so you can configure it to meet your orchestration needs without the complexity of Kubernetes.
Further, its automated workflows, agnostic infrastructure resource pool, and more tools enable you to run and manage your containers and apps across any private or public cloud environment and on-premises.
That can help dramatically expand your datacenter options without compromising your data residency.
With Cycle.io, you get a fully managed container orchestration platform so you can deploy your infrastructure, upload container, and scale then with less hassle.
Like other Kubernetes competitors here, Cycle offers additional capabilities, including advanced security, networking, automation, and ML training models. The platform also gets regular updates, supports bringing your own infrastructure, and lets you use virtual machines or bare metals just fine.
Other container orchestration tools like Kubernetes include Docker Swarm, Kontena, and Mesos (no longer accepting new features).
If you want a less complicated container management service than K8s, consider using OpenShift, Rancher, or Docker.
A serverless platform such as Fargate or Cloud Run simplifies K8s deployments. With managed Kubernetes platforms like Amazon EKS and GKE, you don't need to worry about infrastructure management. It's handled for you.
Others like Docker Swarm, Nomad, and Cycle deliver user-friendly container orchestration capabilities versus upstream Kubernetes.
When you just need better cost visibility and optimization for Kubernetes, CloudZero can help you reap the benefits of K8s without the arduous process of migrating to a competitor. View, share, and act on Kubernetes costs by customer, feature, pod, namespace, and more. Whether you are in engineering, finance, or FinOps, CloudZero has you covered.
CloudZero is the only solution that enables you to allocate 100% of your spend in hours — so you can align everyone around cost dimensions that matter to your business.