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Billy Tat
41 lines
1.8 KiB
Markdown
41 lines
1.8 KiB
Markdown
---
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title: Rancher Deployment Strategy
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---
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<head>
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<link rel="canonical" href="https://ranchermanager.docs.rancher.com/reference-guides/best-practices/rancher-server/rancher-deployment-strategy"/>
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</head>
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There are two recommended deployment strategies for a Rancher instance that manages downstream Kubernetes clusters. Each one has its own pros and cons. Read more about which one would fit best for your use case.
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## Hub & Spoke Strategy
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---
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In this deployment scenario, there is a single Rancher instance managing Kubernetes clusters across the globe. The Rancher instance would be run on a high-availability Kubernetes cluster, and there would be impact due to latencies.
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### Pros
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* Single control plane interface to view/see all regions and environments.
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* Kubernetes does not require Rancher to operate and can tolerate losing connectivity to the Rancher instance.
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### Cons
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* Subject to network latencies.
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* If Rancher goes down, global provisioning of new services is unavailable until it is restored. However, each Kubernetes cluster can continue to be managed individually.
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## Regional Strategy
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---
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In the regional deployment model a Rancher instance is deployed in close proximity to the downstream Kubernetes clusters.
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### Pros
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* Rancher functionality in regions stay operational if a Rancher instance in another region goes down.
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* Network latency between Rancher and downstream clusters is greatly reduced, improving the performance of functionality in Rancher.
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* Upgrades of Rancher can be done independently per region.
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### Cons
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* Overhead of managing multiple Rancher installations.
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* Visibility into Kubernetes clusters in different regions requires multiple interfaces/panes of glass.
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* Deploying multi-cluster apps in Rancher requires repeating the process for each Rancher server.
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