Deploy all services in Kubernetes

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• take a hands on course on kubernetes

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Getting course at:
https://courses.edx.org/dashboard

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Chapter 1: Challanges

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Search on:

• Event-driven Architecture
• Service-Oriented Architecture
• Pods (A Pod is the smallest scheduling unit in Kubernetes. It is a logical collection of one or more containers scheduled together, and the collection can be started, stopped, or rescheduled as a single unit of work. )

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Start From here: Chapter 2. Container Orchestration (Container Orchestration)

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Start From Here: Chapter 4 Introduction

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Start from Here: Master Node Components: API Server

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Start From Chapter 5: Installing Kubernetes

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For Local Development we use minikube. minikube is a single-node Kubernetes cluster.
minikube Commands

• minikube start to bootstrap Kubernetes single node cluster
• minikube status check status of Kubernetes single node cluster status
• minikube stop to stop Kuberneters cluster
• minikube ssh to ssh into minikube
• minikube dashboard to view the dashboard
• minikube ip to view the IP address of minikube node
• minikube service ${servcie-name} open the service in the browser
• minikube addons enable ingress to enable ingress controller

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Starting From Chapter 7 Interoduction

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We can access kubernetes cluster (minikube) using the following methods:

1. CLI (kubectl)
2. Web UI
3. Using APIs

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kubectl commands

1. kubectl config view to view the kube config file ~/.kube/config
2. kubectl cluster-info to view cluster info
3. kubectl proxy to access dashboard from http://localhost:8001/api/v1/namespaces/kubernetes-dashboard/services/http:kubernetes-dashboard:/proxy/#/overview?namespace=default
4. kubectl create namespace ${name} to create namespace of name ${name}
5. kubectl create -f ${signing-request.yaml} to create signing request object
6. kubectl get csr to get all certificate signing request
7. kubectl certificate approve ${csr-name} to approve certificate signing request
8. kubectl get deployments to get all deployments in default namespace
9. kubectl get replicasets to get all replicasets in default namespace
10. kubectl get pods to get all pods in default namespace
11. kubectl describe pod ${pod-name} to view the config info of given pod
12. kubectl get pods -L ${col1},${col2} we can add number of columns along -L argument
13. kubectl get pods -l ${selector} we can get the pods using the selector
14. kubectl delete deployments ${deployment-name} to delete the deployment
15. kubectl create -f ${fileName.yml} to create any object mentioned in the .yml file.

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Starting From Chapter 8

Pods
A Pod is the smallest and simplest Kubernetes object. It is the unit of deployment in Kubernetes, which represents a single instance of the application. A Pod is a logical collection of one or more containers, which:

1. Are scheduled together on the same host with the Pod
2. Share the same network namespace, meaning that they share a single IP address originally assigned to the Pod
3. Have access to mount the same external storage (volumes).

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Start from Chapter 9
Authentication and Authorization Demo Guide

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Chapter 10: Services
Service: A Service offers a single DNS entry for a containerized application managed by the Kubernetes cluster, regardless of the number of replicas, by providing a common load balancing access point to a set of pods logically grouped and managed by a controller such as a Deployment, ReplicaSet, or DaemonSet.

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Start from Chapter 11:

1. Liveness (checking health)
2. Readiness (waiting for certain condition to meet)

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Start From Chapter 12:

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Start From Chapter 14: