Simple Longhorn dedicated nodes

To run Longhorn storage only on the specific nodes:

• Download specific version yaml from:

https://raw.githubusercontent.com/longhorn/longhorn/v1.x.x/deploy/longhorn.yaml

• Append new data to longhorn-default-setting ConfigMap

# Source: longhorn/templates/default-setting.yaml
apiVersion: v1
kind: ConfigMap
metadata:
data:
  default-setting.yaml: |-
    create-default-disk-labeled-nodes: "true"

• Apply yaml
• Add label node.longhorn.io/create-default-disk=true to your dedicated storage nodes. Do nothing on another node.

kubectl patch nodes xxxx -p '{"metadata":{"labels":{"node.longhorn.io/create-default-disk":"true"}}}'

• Done

node 001–003 are storage nodes and others are compute node

For better result, you may apply taint to Longhorn nodes

That’s all