GitOps-driven Kubernetes Native Deployment

This Project Include:

Containerizing the Static website
Minikube Clusters
ArgoCD for Contineuous Deployment
Helm Charts for Parameterizing K8S Manifests
Github Actions for Contineuos Integration
DockerHub for Storing Images

Video Demonstration: https://youtu.be/1PRMywtWoJA?feature=shared

Instructions to deploy

Install Prerequistics

minikube
kubectl
git
helm

git clone repository

git clone https://github.com/srngx/devopsifying-app

Create Docker Image

docker build -t <your-dockerhub-usename>/mywebsite .

Start Minikube Cluster

minikube start

Manually Running with Kubernetes

Apply Manifests

Goto the K8S/manifests/ directory and run: - deployment kubctl apply -f deployment.yaml - service kubctl apply -f service.yaml

Check status if all service working properly - kubectl get all

And try to access the service using minikube IP and nodeport Check Minikube IP - minikube ip

Deploying with helm charts

Optional: - You can create helm chart and manually edit template but I already did that part So here is what I did - helm create mywebsite-chart - deleted Charts and everything inside templates folder - and copied both manifests files into templates - Deleted all comments from Chart.yaml - Edited values.yaml file and deleted everything except: yaml replicaCount: 1 image: tag: "v1" - And Edited deployment.yaml file to parameterized the Image Tab with {{ .Values.image.tag }} -

Deploy with helm charts

cd helm
helm install mywebsite ./mywebsite-chart

STEP 2: Github Action

Creating Repository

Create Repository in Github
Add these files in it
and create .github/workflows/ci.yaml or copy the same file from here

Generate Dockerhub token

login to https://hub.docker.com
Goto to your Account Setting >> Personal Access Token
Give any name and Generate
Copy it somewhere to use in next step

Create Repository Secrets in Github

Goto your Repository Settings
Under Secretes and Variables goto actions and create New Repository Secrets
For Username
- Name: DOCKERHUB_USERNAME
- Secret: - For Password:
- Name: DOCKERHUB_TOKEN
- Secret:

Push everything to github and see if action is running perfectly

Given that you have perfectly setuped Dockerhub Repository and all
After Github Actions Completed Successfully You should see new tag in Dockerhub.
and under helm chart values tag part also must have changed

ArgoCD

To Autodeploy the new version of site we use Argo CD

Install ArgoCD cluster


kubectl create namespace argocd`
kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml

Check argo running status kubectl get all -n argocd kubectl get service -n argocd

Our arogocd server service showing ClusterIP right now but we need to make it NodePort to access it Kubectl edit service argocd-server -n argocd Goto Very bottom of page and Change type: ClusterIP to type: NodePort and save and exit

Now we should see Nodeport

Accessing the ArgoCD-server

check minikube ip and open in browser with appending NodePort port after it like this https://192.168.49.2:31542

Username is ‘admin’
and password can be found in secrets

To get password - kubectl get secret -n argocd - locate argocd-initial-admin-secret - kubectl edit secret argocd-initial-admin-secret -n argocd - Copy the password which is encrypted in base64 - echo UVA1akh0eTlTU295dnozcA== | base64 --decode - copy the password except % sign at the end - and use to login

Create app inside Argocd

Application Name: mywebsite
Project Name: default
Sync Policy: Automatic
Check on: Self Heal
Repository URL:
PATH: helm/mywebsite-chart
CLUSTER URL: https://kubernetes.default.svc
NAMESPACE: default
HELM VALUES: values.yaml
Click on Create

It will take a second to show everything in sync and healthy.

Now try editing your website code and push it to github and See it will resync after a minute and new tag will be appear on values.yaml file and same tag no. image must be uploaded to dockerhub.

सारंग's Notes

Explorer

GitOps-driven Kubernetes Native Deployment