Kubernetes

Describing Kubernetes

• Kubernetes is used for:

  • Orchestrating containers
  • Managing containers
• It is based on abstracting machines, storage, and networks from their physical implementations
• It provides an interface to deploy containers to a cluster

Describing Container Orchestration

• Container orchestration refers to container management

• This includes:

  • Automating deployment of containers running applications
  • Scaling up or down the number of containers running
  • Monitoring resources dedicated to a container

• For example, more containers may be required if:

  • More people run instances of an application
  • More memory, storage, or CPU a container is required
• Kubernetes allows us to lower costs by removing inactive containers

Describing Nodes and Pods

• A node is a container, physical machine, or virtual machine
• For example, an EC2 instance is a node
• A pod is one or more containers logically grouped together
• One node can run more than one pod

References

• Documentation of Kubernetes
• Blog Post about Kubernetes and its Use Cases
• Interaction between Apache YARN and Kubernetes
• Walthrough of Kubernetes
• ELI5 of Kubernetes and Pods