DevOpsDreams

Multi-Tenant GitOps with Argo CD: Isolation Patterns That Survive Production Multi-tenant Argo CD is not just RBAC. This deep dive shows how to combine AppProjects, namespaces, OIDC groups, sync controls, and policy gates into a safer GitOps platform. TL;DR Multi-tenant Argo CD works only when tenancy is enforced at several layers at once: Git repository boundaries, AppProject source and destination rules, Kubernetes namespaces, OIDC-backed RBAC, admission policy, and deletion controls. The practical model is to give each tenant a narrow AppProject, generate applications from approved repository paths, constrain sync and prune behavior, and let Kubernetes enforce runtime quotas and policy. This keeps GitOps self-service useful in production without turning the Argo CD control plane into a shared cluster-admin escape hatch. A production Argo CD tenant boundary is layered: Git path, AppProject, identity group, namespace, policy, and runtime quota all carry part of the isolation model....

FinOps for Kubernetes Workloads on AWS As Kubernetes workloads become increasingly complex, FinOps teams face new challenges in securing and optimizing their cloud-native environments. In this article, we'll explore best practices for FinOps on Kubernetes workloads on AWS, including workload identity management, self-serve analytics, and super app monetization strategies. TL;DR Workload identity management is critical for securing Kubernetes workloads on AWS. Self-serve analytics tools like Row Zero can help teams optimize their cloud-native environments. Super app monetization strategies can help teams turn everyday interactions into recurring revenue. AWS Controllers for Kubernetes (ACK) can simplify the integration of AWS services with Kubernetes applications. OperatorHub.io can help teams visualize and manage ClusterServiceVersions (CSVs) for ACK. Workload Identity Management As workloads become more complex, authenticating and authorizing them becomes...

Kubernetes Backup and Disaster Recovery with Velero In this article, we'll explore how to implement a robust backup and disaster recovery strategy for your Kubernetes cluster using Velero. We'll cover the basics of Velero, its features, and provide step-by-step instructions on how to set up and schedule backups. TL;DR Velero is a tool for backing up and restoring Kubernetes cluster resources and persistent volumes. We'll cover the basics of Velero and its features. We'll provide step-by-step instructions on how to set up and schedule backups. We'll discuss common pitfalls and best practices for implementing a robust backup and disaster recovery strategy. What is Velero? Velero is a tool for backing up and restoring Kubernetes cluster resources and persistent volumes. It provides a simple and efficient way to create backups of your cluster, which can be used for disaster recovery, migration, or replication to development and testing environments. Feat...

Securing the Kubernetes Supply Chain with SLSA and SBOMs In today's complex software landscape, securing the Kubernetes supply chain is crucial to prevent vulnerabilities and ensure reliable deployments. In this article, we'll explore the importance of SLSA and SBOMs in securing your Kubernetes supply chain. TL;DR Understand the risks associated with unsecured supply chains Learn about SLSA and SBOMs and their role in securing the supply chain Discover how to implement SLSA and SBOMs in your Kubernetes environment Get practical guidance on integrating SLSA and SBOMs with your CI/CD pipeline Learn how to avoid common pitfalls and ensure a secure supply chain What is the Kubernetes Supply Chain? The Kubernetes supply chain refers to the entire process of building, deploying, and managing applications on a Kubernetes cluster. This includes the source code, dependencies, build tools, and deployment scripts. A secure supply chain ensures that all components ar...

Kubernetes Multi-Tenancy with Namespaces and Network Policies In this post, we'll explore the best practices for implementing Kubernetes multi-tenancy using namespaces and network policies. We'll cover how to configure tenant isolation, restrict Flux CD to specific namespaces, and enable self-service deployments for tenants. TL;DR Configure tenant isolation using namespaces and network policies Restrict Flux CD to specific namespaces for multi-tenant isolation Enable self-service deployments for tenants Use network policies to control cross-tenant network communication Implement namespace isolation for each tenant Configuring Tenant Isolation with Namespaces When it comes to multi-tenancy in Kubernetes, namespaces are the first line of defense. By creating a separate namespace for each tenant, you can isolate their resources and prevent unauthorized access. However, simply creating a namespace is not enough – you also need to configure network policies...