ArgoCD

Reference - YT video

https://www.youtube.com/watch?v=Kbvch_swZWA&t=608s

Prerequisites:

→ create the ec2 instance with t2.medium.

→ connect via a ssh

then follow the steps below

install the docker

sudo apt-get install docker.io
docker --version
sudo usermod -aG docker $USER && newgrp docker

follow this GitHub repo → https://github.com/Dharmendra-Chourasiya/k8s-kind-voting-app.git

→ create a folder like - k8s

→ Install the kind cluster using script mention in the repository

install_kind.sh

#!/bin/bash

# For AMD64 / x86_64

[ $(uname -m) = x86_64 ] && curl -Lo ./kind https://kind.sigs.k8s.io/dl/v0.20.0/kind-linux-amd64
chmod +x ./kind
sudo cp ./kind /usr/local/bin/kind
rm -rf kind

chmod +x install_kind.sh

./install_kind.sh

kind —version

→ Create a 3-node Kubernetes cluster using Kind:

create the config.yml and run this below command to apply the changes or to create the master and worker node .
config.yml

  kind: Cluster
  apiVersion: kind.x-k8s.io/v1alpha4

  nodes:
  - role: control-plane
    image: kindest/node:v1.30.0
  - role: worker
    image: kindest/node:v1.30.0
  - role: worker
    image: kindest/node:v1.30.0

kind create cluster --config=config.yml

→ Install the kubectl command line tool

• install_kubectl.sh

#!/bin/bash

# Variables
VERSION="v1.30.0"
URL="https://dl.k8s.io/release/${VERSION}/bin/linux/amd64/kubectl"
INSTALL_DIR="/usr/local/bin"

# Download and install kubectl
curl -LO "$URL"
chmod +x kubectl
sudo mv kubectl $INSTALL_DIR/
kubectl version --client

# Clean up
rm -f kubectl

echo "kubectl installation complete."

chmod +x install_kubectl.sh

Argocd Setup

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

kubectl get pods -n argocd
kubectl get svc -n argocd

• Expose Argo CD server using NodePort:

    kubectl patch svc argocd-server -n argocd -p '{"spec": {"type": "NodePort"}}'
  

→ kubectl port-forward -n argocd service/argocd-server 8443:443 --address=0.0.0.0 &
ubuntu@ip-172-31-36-147:~/k8s$ Forwarding from 127.0.0.1:8443 -> 8080

Forwarding from [::1]:8443 -> 8080

→ access the Argocd server on this → 43.205.114.202:8443
Retrieve argocd password
kubectl get secret -n argocd argocd-initial-admin-secret -o jsonpath="{.data.password}" | base64 -d && echo

Now create the new app

check the port of application using below command

kubectl get svc

Access the application using below command

Forward local ports for accessing the voting and result apps:

kubectl port-forward service/vote 5000:5000 --address=0.0.0.0 &
kubectl port-forward service/result 5001:5001 --address=0.0.0.0 &

http://43.205.114.202:5000/
http://43.205.114.202:5001/