Docker
/Intermediate
Docker Swarm
Definition
Docker's native container orchestration tool. It allows you to cluster multiple Docker hosts together into a single, highly available virtual system, managed with familiar Docker CLI commands.
Explain Like I'm New
Kubernetes' little brother. It does the exact same job (managing containers across many servers), but it is vastly simpler to set up and uses the exact same `docker-compose.yml` files you already know.
Real World Example
A small 5-person startup needs to run an app across 3 servers for redundancy, but they don't have the time to learn the massive complexity of Kubernetes. They run `docker swarm init`, and within 10 minutes, they have a fully load-balanced, multi-server cluster.
Common Use Cases
- •Small to medium architectures
- •Rapid clustering
Interview Questions
basic
- Is Docker Swarm more or less complex to configure than Kubernetes?
intermediate
- Why did the tech industry largely abandon Docker Swarm in favor of Kubernetes?