One Cluster Isn't Enough. Scale With Confidence.

Active-passive DR, active-active multi-region, or hybrid cloud — we design and build multi-cluster architectures with fleet management, cross-cluster networking (Cilium ClusterMesh, Liqo, or Submariner), and federated observability.

Duration: 1-2 months Team: 1-2 Senior K8s Architects
The Challenge

You might be experiencing...

Single cluster is a single point of failure — no DR strategy
Expanding to multiple regions but data residency requirements demand separate clusters per region
Managing multiple clusters manually — no fleet management tooling
Different teams deploying differently across clusters — no consistency
Our Approach

Engagement Phases

Weeks 1-2

Architecture Design

Requirements analysis, pattern selection (active-passive, active-active, hub-spoke), architecture design document. Region selection: us-east-1, eu-west-1, ap-southeast-1 examples and data residency analysis.

Weeks 3-6

Implementation

Cluster provisioning, cross-cluster networking (Cilium ClusterMesh, Liqo, or Submariner), fleet management (Rancher/ArgoCD ApplicationSets), GitOps setup.

Weeks 7-8

DR & Validation

DR testing, failover automation, federated observability (Thanos), documentation and training.

What You Get

Deliverables

Multi-cluster architecture design document
Fleet management tooling (Rancher or ArgoCD ApplicationSets)
Cross-cluster networking (Cilium ClusterMesh, Liqo, or Submariner)
Federated observability (Thanos + Grafana)
GitOps repository structure for multi-cluster
DR testing procedure and automation
Architecture documentation and runbooks
Expected Outcomes

Before & After

MetricBeforeAfter
RTOUnknown / untested< 30 minutes
RPOUnknown< 5 minutes
Fleet ManagementManual per-clusterUnified GitOps
DR TestingNever testedQuarterly automated
Technology

Tools We Use

Rancher ArgoCD Cilium ClusterMesh Submariner Thanos Cluster API Terraform
Common Questions

Frequently Asked Questions

When do we need a multi-cluster strategy?

You need multiple clusters when your business requires disaster recovery with tested failover, data residency compliance across regions (e.g., eu-west-1 for GDPR, ap-southeast-1 for APAC data laws), geographic distribution for low latency, or workload isolation between teams or environments. A single cluster is a single point of failure.

What multi-cluster patterns do you support?

We design and implement active-passive DR, active-active multi-region, and hub-spoke patterns depending on your requirements. Each pattern has different trade-offs for cost, complexity, and recovery objectives. We help you select the right pattern for your business needs.

How do you handle cross-cluster networking?

We implement cross-cluster networking using Cilium ClusterMesh (best for Cilium CNI environments with native Kubernetes-aware policy), Submariner (for cross-cloud connectivity with IPSec tunnels), or Liqo (for seamless workload offloading between clusters). The choice depends on your CNI, network topology, and latency requirements.

What are the expected RTO and RPO targets?

With our multi-cluster architecture, typical targets are under 30 minutes for RTO (recovery time objective) and under 5 minutes for RPO (recovery point objective). We validate these targets through automated DR testing procedures that run quarterly.

How do you manage configuration consistency across clusters?

We use ArgoCD ApplicationSets or Rancher Fleet for fleet management, combined with GitOps repository structures that enforce consistent configuration across all clusters. Every change is version-controlled and deployed through the same pipeline to prevent configuration drift.

Which regions do you typically work with?

We work with all major AWS, GCP, and Azure regions globally. Common multi-region patterns we implement include us-east-1 + eu-west-1 for US/EU dual-region HA, us-east-1 + ap-southeast-1 for US/APAC latency optimization, and three-region active-active for global platforms. We also support on-premises and edge cluster scenarios.

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