Wazuh on Azure AKS

Deployment of Wazuh infrastructure on Azure AKS, architecting using GitOps + IaaC

Prerequisites

Cloud Service Provider Azure
Containerization Kubernetes
Managed Kubernetes Cluster Service Azure Kubernetes Service
Infrastructure as a Code Terraform
Git Ops Argo CD
Kubernetes Package management Helm Chart

Roadmap

Azure Configuration
- Azure account: Set up an Azure account with required subscriptions and permissions.
- AKS cluster: Create an AKS cluster with appropriate scale and security settings. Consider Managed Identity for easier integration.
- Persistent storage: Decide on a persistent storage solution (Azure Managed Disks, Azure Files) for Wazuh data.
Create a Git repository to store your Terraform code.
- Define Terraform configurations to,
  - Provision Azure AKS cluster
    Configure AKS with appropriate node pool configurations, such as node sizes, availability zones, and node count.
    Enable Kubernetes RBAC for secure access control.
    integrate AKS with Azure Monitor for monitoring and logging.
  - Networking components
  - Key vault
- Configure Terraform backend to store state securely (e.g., Azure Storage Account).
- Implement Terraform modules for reusability and maintainability.
Helm Chart for Wazuh:
- Helm charts for deploying Wazuh components (Wazuh manager, Wazuh agents, Elasticsearch, Kibana, etc.).
- Customize Helm chart values to match your specific requirements, such as configuration settings, storage options, and resource limits.
Integration with Azure DevOps:
- Set up Azure DevOps pipelines for CI/CD.
- Configure a pipeline for building and pushing Docker images for Wazuh components to a container registry (e.g., Azure Container Registry).
- Create pipeline tasks for deploying infrastructure using Terraform scripts.
- Integrate Helm chart deployment tasks into the pipeline for deploying Wazuh components to the AKS cluster.
GitOps Workflow with Argo CD:
- Install Argo CD on the AKS cluster using Helm charts.
- Configure Argo CD to watch the Git repositories containing Helm chart manifests and Kubernetes manifests for Wazuh.
- Set up Argo CD Applications to deploy and manage Wazuh components using Helm charts.
- Define GitOps policies for automatic synchronization and reconciliation of the desired state with the actual state in the AKS cluster.
Continuous Deployment and Delivery:
- Trigger Azure DevOps pipelines automatically on code commits or schedule them for periodic runs.
- Utilize Argo CD's continuous deployment capabilities to automatically deploy and update Wazuh components based on changes in the Git repositories.
- Implement testing and validation stages in the pipeline to ensure the stability and correctness of deployments.
- Monitor pipeline execution and application health using Azure DevOps monitoring tools and Azure Monitor.
Security and Compliance Considerations:
- Implement security best practices for AKS, such as network policies, Pod Security Policies, and Azure Security Center recommendations.
- Enable encryption at rest and in transit for data stored in Elasticsearch.
- Configure Wazuh rules and policies for threat detection and compliance monitoring.
- Integrate Azure Key Vault for secure management of secrets and sensitive configuration data.