Posted in Software Engineering

Why Container Orchestrator

Although we can manually maintain a couple of containers or write scripts for dozens of containers, orchestrators make things much easier for operators especially when it comes to managing hundreds and thousands of containers running on a global infrastructure.Most container orchestrators can:

  • Group hosts together while creating a cluster
  • Schedule containers to run on hosts in the cluster based on resources availability
  • Enable containers in a cluster to communicate with each other regardless of the host they are deployed to in the cluster
  • Bind containers and storage resources
  • Group sets of similar containers and bind them to load-balancing constructs to simplify access to containerized applications by creating a level of abstraction between the containers and the user
  • Manage and optimize resource usage
  • Allow for implementation of policies to secure access to applications running inside containers.

With all these configurable yet flexible features, container orchestrators are an obvious choice when it comes to managing containerised applications at scale. In this course, we will explore Kubernetes, one of the most in-demand container orchestration tools available today.


Most container orchestrators can be deployed on the infrastructure of our choice – on bare metal, Virtual Machines, on-premise, or the public cloud. Kubernetes, for example, can be deployed on a workstation, with or without a local hypervisor such as Oracle VirtualBox, inside a company’s data center, in the cloud on AWS Elastic Compute Cloud (EC2) instances, Google Compute Engine (GCE) VMs, DigitalOcean Droplets, OpenStack, etc.

There are turnkey solutions which allow Kubernetes clusters to be installed, with only a few commands, on top of cloud Infrastructures-as-a-Service, such as GCE, AWS EC2, Docker Enterprise, IBM Cloud, Rancher, VMware, Pivotal, and multi-cloud solutions through IBM Cloud Private and StackPointCloud.

Last but not least, there is the managed container orchestration as-a-Service, more specifically the managed Kubernetes as-a-Service solution, offered and hosted by the major cloud providers, such as Google Kubernetes Engine (GKE), Amazon Elastic Container Service for Kubernetes (Amazon EKS), Azure Kubernetes Service (AKS), IBM Cloud Kubernetes ServiceDigitalOcean KubernetesOracle Container Engine for Kubernetes, etc.

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