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Day 21 - Orchestrators

Published:Β atΒ 12:00 AM

What is an Orchestrator?

Container orchestrators are systems that automate the deployment, management, scaling, and networking of containers. As applications grow and the number of containers increases, managing them manually becomes increasingly complex. This is where orchestrators come in - they help you manage containerized applications at scale!

Key features of orchestrators include:

The point of this post is not to teach you how to use these orchestrators, but to give you an overview of what they are and how they work. If at some point managing Docker containers becomes too boring, check out the links below to learn more about these orchestrators :)

Kubernetes

Kubernetes (K8s) is currently the most popular container orchestrator, originally developed by Google and now maintained by the Cloud Native Computing Foundation (CNCF). It provides a robust platform for automating deployment, scaling, and operations of containerized applications.

Key concepts in Kubernetes:

Kubernetes offers extensive features for enterprise deployments:

For more information and tutorials, visit: https://kubernetes.io/docs/tutorials/

Kubernetes Source

Docker Swarm

Docker Swarm is Docker’s native clustering and orchestration solution. It’s integrated into the Docker Engine and provides a simpler alternative to Kubernetes. While not as feature-rich as Kubernetes, it’s easier to set up and manage for smaller deployments. Docker Swarm was orginally built to challenge Kubernetes, but has pretty much lost the battle.

Key features:

For more details, check out: https://docs.docker.com/engine/swarm/

Docker Swarm Source

Nomad

Nomad by HashiCorp is a flexible workload orchestrator that can handle both containerized and non-containerized applications. It’s known for its simplicity and ability to integrate well with other HashiCorp tools like Consul and Vault.

Notable features:

Learn more at: https://developer.hashicorp.com/nomad/docs

alt text Source

Conclusion

Container orchestrators are essential tools for managing containerized applications at scale, especially in enterprise environments! If you want to start with one, definitely check out Kubernetes. It’s the most popular and feature-rich orchestrator out there.

Until then, happy containerizing! 🐳

Jonas


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