Update README.md

multi-cluster-multi-tenant-kustomize/README.md

@@ -19,3 +19,79 @@ Adopting a repository structure like this to manage multiple tenants makes it in
 Applying a configuration to a cluster ist just one `kustomize build overlays/clusters/eu | kubectl apply -f -` command.
 
 Kustomize has recently been included into kubectl. Once that's released a simple `kubectl apply -f overlays/clusters/eu` is good enough.
+
+
+
+## Demo details
+
+### ArgoCD Overview
+
+1. **Purpose and Benefits of ArgoCD**:
+   - **Continuous Delivery**: ArgoCD is a declarative GitOps continuous delivery tool for Kubernetes. It ensures that your deployed applications match the desired state defined in your Git repositories.
+   - **Automated Deployment**: Automates the deployment of applications to Kubernetes clusters, reducing manual intervention and potential errors.
+
+### Setting Up ArgoCD on Minikube
+
+1. **Prerequisites**:
+   - **Minikube Installation**: Ensure Minikube is installed and configured on your local machine. This may require sufficient memory and CPU resources (e.g., 8GB RAM, 3 CPUs)【13†source】.
+   - **Kubectl Configuration**: Make sure `kubectl` is installed and configured to interact with your Minikube cluster.
+
+2. **Minikube Cluster Setup**:
+   - **Start Minikube**: Initialize Minikube with adequate resources.
+     ```bash
+     minikube start --memory=8192 --cpus=3 --kubernetes-version=v1.28  -p gitops
+     ```
+   - **Enable Ingress Addon**: Enable the Ingress addon for handling ingress resources.
+     ```bash
+     minikube addons enable ingress -p gitops
+     ```
+
+3. **ArgoCD Installation**:
+   - **Create Namespace and Deploy ArgoCD**: Deploy ArgoCD components in a dedicated namespace.
+     ```bash
+     kubectl create namespace argocd
+     kubectl apply -n argocd -f https://raw.githubusercontent.com/argoproj/argo-cd/stable/manifests/install.yaml
+     ```
+   - **Monitor Deployment**: Use commands like `watch kubectl get pods -n argocd` to ensure all components are running【13†source】.
+   - **Expose ArgoCD Server**: Change the service type to LoadBalancer for easier access.
+     ```bash
+     kubectl patch svc argocd-server -n argocd -p '{"spec": {"type": "LoadBalancer"}}'
+     ```
+
+4. **Accessing ArgoCD**:
+   - **Web Console**: Access the ArgoCD web console via the exposed service IP. Retrieve the initial admin password and log in.
+     ```bash
+     kubectl -n argocd get secret argocd-initial-admin-secret -o jsonpath="{.data.password}" | base64 -d
+     ```
+
+### Kustomize Integration
+
+1. **What is Kustomize?**:
+   - **Configuration Management**: Kustomize allows customization of Kubernetes resource configurations without modifying the original YAML files. It uses a configuration file (`kustomization.yaml`) to manage overlays and customizations.
+
+2. **Using Kustomize with ArgoCD**:
+   - **Building Manifests**: Use Kustomize to build Kubernetes manifests by defining custom overlays and patches. This helps manage different environments (e.g., dev, staging, prod) efficiently.
+     ```bash
+     kustomize build . | kubectl apply -f -
+     ```
+   - **ArgoCD Support**: ArgoCD natively supports Kustomize, making it easy to integrate and deploy customized resources from your Git repository.
+
+### Local Environment Challenges
+
+1. **Resource Constraints**: Running Minikube locally requires sufficient resources (memory, CPU) which might not be available on all machines.
+2. **Configuration Management**: Managing and syncing configurations across multiple local environments can be cumbersome.
+3. **Networking Issues**: Exposing services and accessing them locally can be tricky and requires proper configuration of Minikube and local network settings.
+
+### Enhancements with Remote Environments
+
+1. **Resource Availability**: Remote environments typically provide more robust resources (CPU, memory, storage) compared to local setups.
+2. **Consistency**: Using a remote environment ensures a consistent setup across all users, reducing the "it works on my machine" problem.
+3. **Scalability**: Remote environments can be easily scaled up or down based on the needs of the deployment, providing flexibility and efficiency.
+4. **Collaboration**: Teams can collaborate more effectively in a shared remote environment, accessing the same resources and configurations without local setup conflicts.
+
+
+
+
+
+
+