Folderstructure

Here is a complete sample directory structure with the essential files and starter code for deploying two Kubernetes clusters in different clouds (AWS EKS and Azure AKS), managing them with GitOps (ArgoCD), enabling cross-cluster mesh (Istio), and exposing applications with consistent global ingress. You will need to edit variables (cloud credentials, VPC config, domains, etc.) to match your environment before applying.

multi-cloud-clusters/ ├── terraform/ │ ├── aws-eks/ │ │ ├── main.tf │ │ ├── variables.tf │ │ ├── outputs.tf │ └── azure-aks/ │ ├── main.tf │ ├── variables.tf │ ├── outputs.tf ├── manifests/ │ ├── istio/ │ │ ├── istio-aws.yaml │ │ ├── istio-azure.yaml │ ├── global-ingress/ │ │ ├── ingress-aws.yaml │ │ ├── ingress-azure.yaml ├── charts/ │ └── my-app/ │ ├── Chart.yaml │ ├── values.yaml │ └── templates/ │ ├── deployment.yaml │ └── service.yaml ├── argo-cd/ │ └── application.yaml

How to use:

Write your real VPC/subnet/resource-group info and credentials in terraform/ variables or backend configs.

terraform apply in both subdirs to spin up clusters and output kubeconfigs.

Use kubectl, helm, or ArgoCD to install Istio and apply app manifests in each context.

Customize Istio operator YAMLs to connect clusters for mesh and establish cross-mesh trust (multi-primary).

Deploy the global ingress in both clusters (use DNS like Route 53/Azure Traffic Manager above both endpoints).

ArgoCD will sync your app on both clouds for GitOps.

This structure provides a secure, observable, and highly available multi-cloud (AWS+Azure or AWS+GCP) Kubernetes platform, ready for further customization.