What is Minikube in Kubernetes?
Minikube is a tool that allows you to run a single-node Kubernetes cluster on your local machine, designed for development and testing purposes, providing an easy way to set up a local Kubernetes environment without the need for a full-scale production cluster. Here are some key points about Minikube.
What is Argo CD?
Argo CD is a declarative, GitOps continuous delivery (CD) tool for Kubernetes, and it is part of the Argo Project, a collection of open-source tools for running and managing Kubernetes workloads and applications. Argo CD helps you manage and deploy your Kubernetes applications by syncing your desired application state stored in a Git repository with the actual state in your Kubernetes cluster.
What is GitOps?
GitOps brings the best practices of DevOps, continuous delivery, and version control into infrastructure management, making it easier to deploy, manage, and monitor infrastructure and applications in a reliable and auditable way. By leveraging Git as the single source of truth and automating the deployment process, GitOps improves efficiency, consistency, and collaboration in managing cloud-native applications and infrastructure.
Prerequisites
AWS EC2 Instance: Create an EC2 instance running Ubuntu.
Minimum 2 CPU’s or more
Minimum 2GB of free memory
Minimum 20GB of free disk space
T2.large instance type
SSH Access: Ensure you have SSH access to your EC2 instance.
Basic Linux Knowledge: Familiarity with basic Linux commands will be beneficial.
Launch an instance: Connect to Public IP to server.
In security Group – Edit Inbound Rule with TCP -8080, https - 443
Install Minikube on Ubuntu 22.04 LTS
sudo apt update -y
Install below packages for minikube
sudo apt install curl wget apt-transport-https -y
Install Docker on Ubuntu 22.04 LTS
sudo usermod -aG docker $USER
sudo chmod 666 /var/run/docker.sock
Configure to Run docker without sudo permission.
egrep -q 'vmx|svm' /proc/cpuinfo && echo yes || echo no
To check whether virtualization support is enabled on your machine or not.
Install the KVM and and other tools on Ubuntu
sudo apt install qemu-kvm libvirt-clients libvirt-daemon-system bridge-utils virtinst libvirt-daemon
Add your user to libvert group
sudo adduser -a $USER libvirt
sudo adduser -a $USER libvirt-qemu
Reload Group
newgrp libvirt
newgrp libvirt-qemu
To download latest minikube setup refer minikube official download page.
curl -LO https://storage.googleapis.com/minikube/releases/latest/minikube-linux-amd64
Install Minikube on Ubuntu 22.04 LTS
sudo install minikube-linux-amd64 /usr/local/bin/minikube
To check minikube version on Ubuntu
minikube version
Make the kubectl binary executable
sudo mv kubectl /usr/local/bin/
Install kubectl on Minikube
curl -LO "[dl.k8s.io/release/$(curl](dl.k8s.io/release/$(curl) -L -sdl.k8s.io/release/stable.txt)/bin/linux/amd../bin/linux/amd64/kubectl)"
Download kubectl binary with curl on Ubuntu using below command.
kubectl version --client --output=yaml
Start MiniKube on Ubuntu
To check kubectl version on ubuntu
Start the minikube kubernates cluster on ubuntu.
minikube start --vm-driver docker
To Check the status of Minikube.
minikube status
Install ArgoCD on Minikube
There are several driver options that you can use to start a minikube cluster (virtualbox, docker, hyperv).
We are using driver as docker
minikube start --driver=docker
Just like other kubernates tools, ArgoCD requires a namespace with its name. Therefore, we will create a namespace for argocd.
kubectl create ns argocd
ArgoCD can be installed using its manifests. First, you’ll need to download these manifests and apply them to your Minikube cluster.
kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/v2.5.8/manifests/install.yaml
This will create the necessary resources for ArgoCD within the argocd namespace.
kubectl get all -n argocd
Let’s verify the Installation by getting all the objects in the ArgoCD namespace.
Access ArgoCD UI on Browser
By default, the ArgoCD server is not exposed outside the cluster. You can expose it using port-forwarding to access the ArgoCD UI.
kubectl port-forward svc/argocd-server -n argocd --address 0.0.0.0 8080:443
The ArgoCD UI will be available at http://localhost/IP:8080. Access it through your web browser. Now we can go to a browser and open instance_ip:8080
Now, see a privacy warning. Just ignore the warning, click on Advanced and then hit on Proceed to localhost (unsafe) to continue to the GUI interface.
Get the initial password for the admin user to log in
kubectl -n argocd get secret argocd-initial-admin-secret -o jsonpath="{.data.password}" | base64 -d
Use the generated password to log in as the admin user in the ArgoCD UI.
Deploying an app on ArgoCD
Now that we are on web interface, we can create a new app. The source code for my application is in my Github repo, so We will connect my GitHub repo to ArgoCD.
After logging in, click the + NewApp button.