Managing Kubernetes clusters across multiple cloud providers?

Manage Kubernetes clusters across clouds and on-premises from one sovereign EU control plane. Simplify operations, strengthen security, and give your platform team more time to focus on innovation.
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Operate heterogeneous clusters as one governed fleet

Multi-cloud Kubernetes management works best when engineering teams treat distributed clusters as one fleet, not separate administration silos. A shared control model lets the business manage multiple Kubernetes clusters across each environment while preserving local infrastructure choices. Policy as code provides a consistent source for application configuration, compliance controls and resource management rules. 

Teams can review changes through Git, use GitOps to promote approved states, and consult shared documentation before deployment. This approach supports AKS and other Kubernetes environments without requiring identical storage, networking or container registry implementations. Central governance standardises intent rather than every technical component. One team may select storage for data residency, while another uses a different implementation for performance. Both still follow common policy, code review and compliance processes across the fleet.
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Managed sovereignty without platform lock-in

OVHcloud Managed Rancher Service supports governed Kubernetes fleet management
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One managed EU service
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Outbound-only connectivity
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An open exit path

Design governance around a distributed workload architecture

Managed Rancher Service (MRS) hosts the Rancher Manager for you on OVHcloud infrastructure, so it stops being a platform your team has to run. This is an important architecture distinction: OVHcloud does not manage your clusters on GKE, EKS, or AKS directly. Rancher Manager is what's hosted on OVHcloud, in an EU region of your choice; a lightweight, outbound-only Rancher agent runs on each of your clusters, wherever they live, and reports back to the Manager. Your existing GKE, EKS, AKS, or on-prem clusters stay exactly where they are, under your accounts and your responsibility — MRS gives your organization one place to see, control, and govern all of them. It's a practical solution for any enterprise running Kubernetes across more than one region or more than one cloud provider.

Every cluster type — cloud-managed, self-managed, or OVHcloud-native — appears in the same Rancher UI, behind the same APIs, and can be provisioned through the same Terraform resources. If your fleet also needs a shared container image store, OVHcloud Managed Private Registry provides a Harbor-based registry that every cluster in the fleet can pull from, regardless of which cloud or region it runs in.

Segment the fleet around clear responsibilities

Define a role once in the Rancher Manager and propagate it to every cluster in the fleet — cloud-managed, self-managed, or OVHcloud-native — instead of repeating the same access policy in three or four separate consoles. Every access grant, revocation, and permission change is recorded in a single, consistent audit trail, which is the difference between an access review that takes an afternoon and one that takes a week of cross-referencing exports from different providers. This is the operational backbone that lets a growing organization keep compliance manageable as the fleet scales.

Standardise configuration without erasing local design

CoIf you're standing up new clusters rather than importing existing ones, use the Rancher Manager hosted on OVHcloud to provision RKE2 — a production-grade, CIS-benchmark-hardened Kubernetes distribution — or k3s, a lightweight distribution suited to edge deployments. Both can be provisioned on any infrastructure with compute available: on-prem bare metal, VMs, or IaaS instances on any cloud provider, in any region. The provisioning workflow, RBAC, and monitoring are identical across multiple clouds, regardless of where the resulting cluster physically runs.

Add existing and new clusters without redesigning workloads

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If you already run clusters on Google, AWS, Azure, or your own data centre, you don't migrate anything. You install the Rancher agent on each existing cluster; it opens an outbound-only connection to the OVHcloud-hosted Rancher Manager, and the cluster appears in your fleet within minutes, regardless of its cloud or region. There's no re-platforming, no deployment disruption, and no change to how applications are deployed on that cluster today — whether it runs on GCP, AWS, Azure, or on-prem. 

For workloads that need EU sovereignty specifically, add an OVHcloud-native cluster to the same fleet. OVHcloud Managed Kubernetes Service clusters register in the same Rancher Manager as your imported and provisioned clusters, and appear as first-class citizens alongside them — same UI, same RBAC, same GitOps pipelines. Unlike clusters on third-party clouds, OVHcloud fully manages the MKS control plane itself, so this is the one cluster type in your fleet with zero control-plane operational burden on your side, in the EU region of your choice.
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Onboarding a new platform engineer becomes a single access provisioning step instead of a per-cluster, per-cloud checklist, and support tickets about "who can access what" stop being a research project. That single control point is also what makes a compliance audit tractable: one place to demonstrate who has access to what, and when that access was granted or removed.
Kubernetes version upgrades are orchestrated across the fleet with configurable surge settings, instead of being scheduled as separate manual maintenance windows per cluster per cloud. Provisioning, upgrading, and deprovisioning clusters all go through the same UI, the same API, or the same Terraform resources — the operational interface doesn't change depending on which cloud the cluster happens to run on, and current cluster status is visible without switching consoles.
Rancher integrates with Prometheus and Grafana at fleet scale, giving you a consistent monitoring and alerting stack across every cluster instead of a different observability setup per cloud. Metrics storage and log aggregation are enabled the same way on every cluster, and the same dashboards, the same alerting rules, and the same on-call runbooks apply whether an alert fires on a GKE cluster, an on-prem RKE2 cluster, or an OVHcloud MKS node — helping ensure reliability questions get a fleet-wide answer instead of a per-cloud one.
Onboarding a new platform engineer becomes a single access provisioning step instead of a per-cluster, per-cloud checklist, and support tickets about "who can access what" stop being a research project. That single control point is also what makes a compliance audit tractable: one place to demonstrate who has access to what, and when that access was granted or removed.

Deliver approved states consistently with Rancher Fleet

Keep delivery definitions in Git

Define applications once in a Git repository rather than maintaining a separate GitOps pipeline per cloud — the management process follows reviewed changes, not one-off console edits.

Target the right cluster groups

Bundle targeting syncs by label selector — all EU production clusters, all staging regardless of cloud — instead of a single fleet-wide rollout.

Respect operational boundaries

The same governance applies to workload isolation and namespace policy alike, so the same rules apply everywhere, not just on the clusters your team happens to check most often.

Detect and correct divergence

Fleet continuously detects configuration drift between what's declared in Git and what's actually running, and reconciles it automatically on every cluster in the selector, without per-cloud tooling.

Automate each stage of the cluster lifecycle

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That consistency is what turns cluster lifecycle management from a recurring, error-prone manual exercise into a repeatable, automated operation your team runs the same way every time. It removes a layer of complexity that would otherwise grow linearly with every complex, multi-region deployment you add, from initial development through to production, and lets your team manage the fleet effectively without a proportional increase in headcount.
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Build one operating model on four foundations

Application operations

Azure Arc is a Microsoft product, built around extending Azure's control plane to other environments. Google Anthos does the same for GCP, and AWS EKS Anywhere is built around AWS tooling and licensing. Each is a strong option if your fleet is going to stay concentrated on that one hyperscaler's region footprint, but each anchors your management plane — and, to some degree, your operational habits — to a single cloud vendor, making them cloud-centric rather than cluster-centric solutions. Rancher, and by extension MRS, was built cloud-agnostic from the start: it manages any CNCF-conformant cluster as a first-class citizen, with no cloud preference baked into the product or its architecture.

Role-aware governance

If you're already running self-hosted Rancher, the underlying software is identical — MRS doesn't replace it with something different, it removes the operational burden of running it, and standard best practices for managing the Manager itself move to OVHcloud. High availability configuration, the backing datastore, certificate rotation, and quarterly Rancher releases move from your team's backlog to OVHcloud's. You keep the same interface, the same APIs, the same feature set, and the same Fleet catalog you already know.

For teams evaluating OpenShift Advanced Cluster Management as an alternative: ACM assumes OpenShift or OCP-compatible clusters, while Rancher manages any CNCF-conformant Kubernetes distribution regardless of where it's provisioned, with a different cost model — OpenShift licenses per core, while Rancher is open source and MRS is priced per managed cluster.

Monitoring and logging

The same Prometheus and Grafana stack, the same dashboards, alerting rules and on-call runbooks apply everywhere in the fleet, whether an alert fires on a GKE cluster, an on-prem RKE2 cluster or an OVHcloud MKS node — so reliability questions get a fleet-wide answer instead of a per-cloud one.

Sovereignty and portability

Rancher is released under the Apache License 2.0, and the RKE2 and k3s distributions it provisions are CNCF projects. MRS doesn't run a proprietary fork or a closed management layer on top of this: it's the same open-source Rancher Manager, hosted and operated for you. If you ever decide to bring Rancher management back in-house, your exit path is self-hosting the identical open-source project — not a migration to a different tool, and not a rewrite of how your clusters are configured or how your GitOps pipelines are structured.

Both Azure Arc and Google Anthos route fleet management data — cluster topology, RBAC, application state — through Microsoft or Google infrastructure in the United States, which means that data is subject to US jurisdiction even when every worker node in your fleet sits in an EU data centre or region. OVHcloud Managed Rancher Service hosts the Rancher Manager on European infrastructure with no US parent company, so your fleet's management data never transits a US hyperscaler, and it reduces single-hyperscaler dependency for critical workloads — giving regulated teams (healthcare, financial services, public sector) an EU-jurisdiction option without abandoning the clusters they already run elsewhere.

Adopt central governance without a disruptive migration

Multi-cloud fleet management is an architecture decision, not a self-serve purchase — the right control plane design depends on how many clouds and data centers you run, which compliance requirements apply, and how your GitOps pipelines, access control, and network policies are already structured. Organizations with complex, multicluster operations get the most value from talking this through before committing to a pattern. Talk to an OVHcloud Solutions Architect for a free 30-minute consultation and a concrete architecture recommendation for your fleet. 

If you want to validate the fit before that conversation, start a free Kubernetes cluster on OVHcloud — the MKS Free tier costs nothing, needs no credit card, and is available in all 14 regions, so you can add OVHcloud to your existing fleet at zero cost and see it appear in your Rancher Manager alongside your other clusters. It runs inside your existing OVHcloud Public Cloud project, alongside any other Public Cloud resources your team already uses, and registers in your Rancher Manager exactly like any other cluster in the fleet — same RBAC, same Fleet GitOps, same monitoring. For production workloads, MKS Standard runs 3-AZ in Paris at a 99.99% SLA. 

For broader context on where multi-cluster management fits among OVHcloud's container tooling, the container orchestration hub covers the full picture, from single-cluster Managed Kubernetes to fleet-wide management with Rancher.
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Assess a sovereign control plane for your Kubernetes estate
Explore how OVHcloud Managed Rancher Service can support your multi-cloud and on-premises fleet. Our specialists can discuss your current architecture, sovereignty priorities, governance model and onboarding requirements, then help you assess where a managed control plane fits. Bring your cluster inventory, operational constraints and target ownership model to a focused service demonstration.
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