Before containers, businesses had to contend with variability in system environments due to dependencies and compatibility issues. With containers, they were able to build, deploy, and run applications by packaging them together with the dependencies required for them to run. In simpler terms, containers enable portability, scalability, and easier deployment of applications. According to Gartner, there will be more than 75% of companies running containerized applications in 2022, a sharp contrast to the 2020 figure that stands at less than 30%.
Kubernetes is one of the most popular container orchestration tools to manage multiple containers or microservices at scale. Apart from its tremendous amount of functionalities, Kubernetes is widely used across many companies globally.
This article provides you with alternatives to Kubernetes and the features that make them stand out.
As organizations move away from monolithic application development, component-based applications are becoming the norm. These applications reside in multiple containers. A single application may span multiple container clusters depending on its complexity. While it might be okay to package and manage a few containers, it becomes more challenging to manage and scale as the number of containers grows.
To efficiently package, manage, and run applications in containers, you will need container orchestration tools. Container orchestration tools are management systems that facilitate the automation of containerized workloads. These workloads may include processes such as:
Kubernetes is a container orchestration tool that allows you to build, package, scale, schedule, and manage application services across multiple containers. Originally developed by Google, the Cloud Native Computing Foundation adopted it as an official project in 2015. It is one of the most popular software among DevOps professionals because Docker provides it as a Platform as a Service (PaaS).
Kubernetes makes it easy to deploy and scale containerized applications by eliminating many manual processes. With Kubernetes, you can cluster Linux containers running on virtual or physical machines, and manage them easily. Since clusters can be on public, private, or hybrid clouds. Kubernetes is a great platform to host cloud-native applications that require rapid scalability.
There are several similar tools to Kubernetes, here is a list of 8 top solutions you can consider for container orchestration.
Docker is an open-source platform for building, managing, deploying containerized applications. Swarm is a native feature in Docker with a group of virtual or physical machines that lets you schedule, cluster, and run Docker applications. It is a Docker alternative for Kubernetes that provides high portability, agility, and high availability.
Swarm balances and manages host workloads. By doing so, it can efficiently scale applications by adding or removing worker processes as necessary to manage a cluster’s desired configuration.
Rancher is an open-source container orchestration platform. With it, you can manage production containers across different platforms, including on-premises and the public cloud. As a Platform as a Service, it simplifies container management by allowing access to a set of available open source technologies, rather than having to build platforms from scratch.
Azure Kubernetes Service is a container orchestration platform that offers secure serverless Kubernetes. AKS helps to manage Kubernetes clusters and makes deploying containerized applications so much easier. In addition to that, it provides automatic configuration of all Kubernetes nodes and master.
You can create AKS clusters programmatically or through the Azure portal. Azure also comes with advanced networking capabilities, Azure Active Directory integration, and monitoring with Azure Monitor. AKS also stores all logs in a workspace that contains the Azure Log analytics.
OpenShift is another container orchestration alternative for Kubernetes. It is a PaaS developed by Red Hat as a hybrid, enterprise-scale platform with extended Kubernetes capabilities for container orchestration. With a Linux OS, OpenShift helps you securely automate and scale the entire lifecycle of containerized applications. That means you can virtualize every host and manage all of your workloads easily, facilitate continuous integration, and automate the process of releasing new software.
With a holistic distributed platform, OpenShift provides much more functionality than Kubernetes. It supports standardized containers with Docker’s Red Hat API. And other functions include container orchestration, container scheduling, container networking, and an easy deployment process.
Nomad is a container orchestration platform that makes it easy to manage containerized and non-containerized applications in the cloud and on-prem at scale. It is an orchestration solution from Hashicorp. As a result, it comes built-in with integrations from other Hashicorp tools such as Vault, Consul, and Terraform.
Helios is a Kubernetes alternative for container orchestration. It is a platform by Spotify that helps to orchestrate and distribute Docker containers across multiple distributed servers. The pragmatic nature of Helios and its CI/CD pipelines functionality makes it a popular choice for developers.
On top of that, Helios integrates with virtually all DevOps workflows, making container management straightforward regardless of the operating system, cloud service, or network topology. It also provides cluster history via event logs for restarts, version changes, and deployments. Developers can swiftly identify security vulnerabilities through the HTTP API Client or CLI.
ECS is Amazon’s alternative for Kubernetes. It helps to manage and run container clusters present on Elastic Container (EC2) instances. It is a solution that provides secure, scalable, and reliable container orchestration that is suitable for applications requiring maximum security and reliability. ECS also uses the least amount of compute resources and lets you focus on optimizing applications instead of managing infrastructure.
One of the core benefits of using ECS is its presence in up to 70 availability zones and 22 regions globally. Because of this, you can enjoy high uptime and low latency.
Mesos is Apache’s alternative to Kubernetes. It is a container orchestration tool that provides easy resource allocation and sharing among multiple distributed frameworks. That is carried out through modern kernel features like Solaris’ Zones and CGroups in Linux. To top it off, Mesos provides Chronos Scheduler for starting and stopping services, and Marathon API for scaling services and balancing the load.
Building and managing applications at scale don’t have to be a complex process. Several DevOps tools help to simplify these processes: container orchestration, server automation, infrastructure management, configuration management, version control, CI/CD, and continuous security.
While Kubernetes is an excellent tool for container orchestration, you may find that you need other options. This article provides you with 8 top alternatives to Kubernetes. All you have to do now is choose the best tool for your business.
While Kubernetes is a popular container orchestration platform, there isn’t a clear “better” alternative because it depends on the unique use case and needs. Alternatives include Docker Swarm, Nomad by HashiCorp, and Apache Mesos, each with its own set of features and trade-offs.
Docker Swarm, for instance, is simpler to set up and administer than Kubernetes, making it ideal for smaller deployments or teams with less sophisticated requirements. Nomad focuses on simplicity and multi-datacenter compatibility, whereas Mesos prioritises scalability and fault tolerance, which are generally preferred in large-scale distributed systems.
Additionally, emerging technologies and advances in cloud-native computing are introducing new competitors and developments in the container orchestration field. Therefore, it’s critical to compare several platforms using criteria like compatibility with current infrastructure, scalability, simplicity of use, and community support.
Indeed, Kubernetes remains in high demand as the de facto standard for container orchestration in cloud-native environments. Its popularity arises from its ability to automate the deployment, scaling, and maintenance of containerised applications, providing advantages such as enhanced agility, scalability, and portability across a variety of infrastructure setups.
Employers are increasingly looking for Kubernetes capabilities as they implement containerisation and microservices architectures to modernise their apps and infrastructure. Job listings for Kubernetes-related positions, such as Kubernetes administrators, DevOps engineers, and cloud architects, remain common across sectors. As organisations strive for increased efficiency, flexibility, and creativity in their IT operations, knowledge of Kubernetes and related technologies remains a significant asset in the job market.
Learning Kubernetes will be extremely useful in 2024 and beyond. Kubernetes, the primary container orchestration technology in cloud-native computing, remains popular among organisations looking to modernise their infrastructure, streamline deployment operations, and increase scalability and resilience.
Kubernetes skills are in great demand across sectors, as cloud-native programming, microservices architectures, and DevOps approaches gain traction. Whether you’re a software developer, system administrator, DevOps engineer, or cloud architect, learning Kubernetes may help you advance your career and find new possibilities.
Plus, the Kubernetes ecosystem is still developing and innovating in areas like serverless computing, hybrid cloud integration, and service mesh, which guarantees that knowledge of Kubernetes will always be valued in the ever-shifting IT industry.
The choice between Kubernetes and Docker Swarm depends on specific use cases, preferences, and requirements. Both are container orchestration platforms, but they have different features and approaches:
Kubernetes:
Docker Swarm:
Finally, the “best” option depends on your unique requirements. Kubernetes is commonly used for large-scale and complicated deployments, but Docker Swarm may be more tempting for simpler projects or those that prioritise simplicity of use.
Steffen Kleven
Hi.
VMware Tanzu is also an option for private cloud solutions.