How to Install and Configure Rancher K3s

How to Install and Configure Rancher K3s

What is Rancher K3s? K3s is an official Cloud Native Computing Foundation sandbox project that brings a lightweight, fully compliant Kubernetes distribution designed for lower resource production models like remote locations or on an IoT device. When used in conjunction with Rancher, K3s can easily be managed from within the Rancher orchestration platform. What is...

What is Rancher K3s?

K3s is an official Cloud Native Computing Foundation sandbox project that brings a lightweight, fully compliant Kubernetes distribution designed for lower resource production models like remote locations or on an IoT device. When used in conjunction with Rancher, K3s can easily be managed from within the Rancher orchestration platform.

What is Rancher?

Rancher is a complete software stack used to deploy containers. It addresses the operational and security hurdles of operating multiple Kubernetes clusters across an infrastructure. Rancher provides DevOps teams with multiple integrated tools for running containerized workloads. 

High-Availability K3s Server with an External DB Single server clusters can meet various use cases. Still, for environments where the Kubernetes control plane uptime is critical, you can run K3s in an HA configuration. An HA K3s cluster consists of two or more server nodes that will serve the Kubernetes API and run other control plane services An external datastore (as opposed to the embedded SQLite datastore used in single-server setups)

Architecture

K3s can be configured in multiple ways. It can be used as a single server setup using an embedded database such as SQLite or a high availability K3s server cluster using an external database. In the image shown below, the framework is demonstrated in a high availability setup.

docker

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