Kubernetes-news-site

repository created to pratice use of the basic elements of a kubernetes

the system used to show the examples was developed by alura courses and the examples and concepts cited are based on the content presented in the course of the alura, knowledge of the author and research in documentation. I hope they help anyone who's reading. : )

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Requirements:

• Linux operating system. For this example is being used the Ubuntu 20.4 LTS
• Vitualbox
• Must have Docker installed

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Basic Concepts

it is interesting to know some basic concepts to understand how the project examples work, such as:

pod:

element that will own the containers that are running in the application

configmap:

element responsible for mapping environment variavies between different kubernetes services

nodes:

collection of resources to support oneor more pods

SVC or services:

are used to expose pod ports to achieve internal communication betwen the services or external as well

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config project

install minikube:

    curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64

    sudo install minikube-linux-amd64 /usr/local/bin/minikube

start minikube:

    minikube start –vm-driver=virtualbox

if you use the kubectl get node will already see the kubernets cluster up and running:

    kubectl get nodes

Now apply the manifests:

  kubectl apply -f site_noticias/porta-noticias.yaml
  kubectl apply -f site_noticias/site-noticias.yaml
  kubectl apply -f site_noticias/db/db-noticias.yaml
  kubectl apply -f site_noticias/configMap/db-configmap.yaml
  kubectl apply -f site_noticias/configMap/portal-configmap.yaml
  kubectl apply -f site_noticias/configMap/sistema-configmap.yaml

see what ip of your node and access the services on ports 30000 and 300001

  kubectl get nodes -o wide

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login: admin

password:admin

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Kubernetes documentation

https://kubernetes.io/pt-br/docs/home/