Kubernetes Handbook

Introduction
Prerequisites
Features of Kubernetes
Architecture
Pods and Nodes
- Nodes
- Pods
Controllers
- Benefits of Controllers
- Kinds of Controllers
Minikube
- What is Minikube
Installation and Running (Mac OS)
- Installation
- Running Hello World Application
Labels Namespaces and Selectors
Health Checks Rollouts and Rollbacks
- Health Checks
- Rollouts and Rollbacks
Config Maps and Secrets
- Config Maps
- Secrets
Running Jobs
- How to Run Jobs
Dashboard and Debugging
- Kubernetes Dashboard
- Debugging

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Functions
Kube-proxy
Pod
Post Scheduling

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Architecture

Worker Nodes

Previousetcd and kubectl NextNodes

Last updated 3 years ago

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Functions

Worker nodes is the location where your apps operate
Communication between master and worker nodes is via kubelet process
Docker along with kubelet works together on worker nodes to run containers on node

Kube-proxy

Network proxy/load balancer on single worker node
Handles network routing for TCP/UDP packets
Connection forwarding

Pod

Pod is smallest unit of deployment in Kubernetes
Containers in a pod are tightly coupled and share storage, linux namespaces, IP addresses etc.

Post Scheduling

Once pods are scheduled and running
- kubelet process checks health
- Kube-proxy routes packets from communicating processes
Worker nodes are exposed to the internet and traffic coming in is handled via kube-proxy
User thus communicates with the Kube app