Longhorn

Information

Install

This current information sheet is in reference to Longhorn 1.3v , be aware that 1.4v will be in production around 2023. Thus this might become obsolete information.
Before installing, look over the requirements for storage.
Requirements for 1.3v Longhorn

NFS

Ubuntu NFS Setup
- Make sure system is updated / upgrade
  - Terminal window
    sudo apt-get update && sudo apt-get upgrade -y
- Install nfs-common and nfs-kernel-server
  - Terminal window
    sudo apt-get install nfs-common nfs-kernel-server -y

Namespace

Creating a custom namespace to hold the storage.

Kubectl command to create the namespace:
- Terminal window
```
kubectl create namespace storage
```
- std out: namespace/storage created
This namespace will be where we store our production data.

Longhorn Uno

Under storage class, we will be creating the longhorn uno and then deploying it under that.

 annotations:
    longhorn.io/last-applied-configmap: |
      kind: StorageClass
      apiVersion: storage.k8s.io/v1
      metadata:
        name: longhorn-uno
        annotations:
          storageclass.kubernetes.io/is-default-class: "true"
      provisioner: driver.longhorn.io
      allowVolumeExpansion: true
      reclaimPolicy: "Delete"
      volumeBindingMode: Immediate
      parameters:
        numberOfReplicas: "1"
        staleReplicaTimeout: "30"
        fromBackup: ""
        fsType: "ext4"
        dataLocality: "best-effort"
        unmapMarkSnapChainRemoved: "ignored"
        disableRevisionCounter: "true"
        dataEngine: "v1"
    storageclass.beta.kubernetes.io/is-default-class: 'false'
    storageclass.kubernetes.io/is-default-class: 'false'