twtech-EKS Cluster Provisioned in aws : Steps in provisioning the infra (via the command line interface...CLI), Apps deployment, Accessing the Apps by N-Users, Monitoring and Observability.

 

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Using terraform (IaC) to provision infrastructure... while bootstrapping all the dependencies ( prerequisites)  

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Connect (ssh) to instance  and verify that all the necessary packages that were bootstrapped.

verify

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Provision twtech-EKS-Cluster in Cloud with command line: CLI

eksctl create cluster --name twtech-eks --region us-east-2 --nodegroup-name twtnode --node-type t3.medium --managed --nodes 2

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The  following command should confirm that EKS cluster is up and running.

eksctl get cluster --name twtech-eks --region us-east-2

Update Kube config by entering below command:

aws eks update-kubeconfig  --name twtech-eks --region us-east-2

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List the all nodes created:

kubectl get node

Deploy test applications with PVC,PV, and Storage-Class (MongoDB)

link:

https://github.com/Think-with-Tech/Ansible-k8s-helm/blob/main/twtech-apps-PVC-PV-SC.yaml

#!/bin/bash

# This manifest file would provision, pvc. pv, sc, twtech-springapp, twtech-webapp, and svc.

nono (vi or vim) into a file and create a manifest file:

sudo vi  app-pvc-pv-sc-svc.yaml

Provision the resources in the cluster:

kubectl apply -f  app-pvc-pv-sc-svc.yaml

List all resources provisioned in the eks default namespace:

kubectl get all

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List all resources created in all eks namespaces:

kubectl get all -A

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List the pvc created:

kubectl get pvc

List the pv created:

kubectl get pv

List the sc created:

kubectl get sc

Accessing the twtech-Apps on eks-cluster:

List the services:

kubectl get svc

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Get the PubIP of the worker node:  GUI

10.191.132.394:31400

Browse the application: firewall to application restrict access. port must be opened to allow traffic access from N-users

Go to Security group (firewall)  and open just the required ports , 

for security reasons on the worker nodes:

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Go back and refresh the application page:

twtech-spring-boot-mongo

Try to populate with data and see whether data will be saved on the twtech-db:

Accessing twtech-webpp:

10.191.158.190:31200/twtech

Resources created with the eks-cluster using:

Two CloudFormation stacks for:

twtech-eks-nodegroup(s) (EKS Managed Nodes (SSH access: false) [created by eksctl)

twtech-eks-cluster (EKS cluster (dedicated VPC: true, dedicated IAM: true) [created 

and managed by eksctl)

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How to delete the eks cluster and all its resources:  With the command line.

eksctl delete cluster --name twtech-eks --region us-east-2