In this document, you will learn about how to install Longhorn in a Rancher Windows cluster.

The characteristic of Rancher Windows Cluster

Rancher has the ability to provision a cluster that has a mix of Linux worker nodes and Windows worker nodes. For more information about Rancher Windows cluster, please refer to the official Rancher documentation.

In a Rancher Windows cluster, all Linux worker nodes are tainted with the taint cattle.io/os=linux:NoSchedule and have the label kubernetes.io/os:linux

Steps to install Longhorn in a Rancher Windows Cluster

1. Since Longhorn components can only run on Linux nodes, you need to set node selector kubernetes.io/os:linux for Longhorn to select the Linux nodes. Please follow the instruction at Node Selector to set node selector for Longhorn.

2. Since all Linux worker nodes in Rancher Windows cluster are tainted with the taint cattle.io/os=linux:NoSchedule, You need to set the toleration cattle.io/os=linux:NoSchedule for Longhorn to be able to run on those nodes. Please follow the instruction at Taint Toleration to set toleration for Longhorn.

Note: After Longhorn is deployed, you can launch workloads that use Longhorn volumes only on Linux nodes.