NodeRed

Configuring Node Red with Storage

In this lab we are going to install and configure Node-Red using the Local Storage Provider for Storage Workload to run on k3s or RKE cluster

There are 2 methods provided to install Node-Red, the Easy Method with Rancher and Helm, or the Manual Method which include the needed yaml files.

Prerequisites:

 Rancher
 Kubernetes Cluster
    Default StorageClass
    LoadBalancer

Easy Method via Rancher and Helm

1) Add k8s-at-home Repo (if not already defined)

Select App & Marketplace -> Chart Repositories

2) Click Create to define a new Chart Repository

Name: k8s-at-home
Index url: https://k8s-at-home.com/charts/

You should now see the k8s-at-home Repo

3) Select Charts - You should now see Node-Red as an available Chart

4) Install Node-Red

Click on Values YAML and change/add the following items

env:
  FLOWS: flows.json
  NODE_OPTIONS: null
  NODE_RED_ENABLE_PROJECTS: true
  NODE_RED_ENABLE_SAFE_MODE: null
  TZ: UTC
  GUID: "1000"
  PUID: "1000"

persistence:
  data:      
   enabled: true
   accessMode: ReadWriteOnce
   size: 1Gi

service:
  main:
    type: LoadBalancer
    ports:
      http:
        port: 1880

5) Press Install and watch it deploy

6) Locate the Node-Red Service

Cluster Explorer -> Services

Manual Method

1) Deploy Node-Red using the local-path-provisioner

Deploy Node-Red using the local-path-provisioner on K3s & create a service to expose the deployment

kubectl create -f nodered-deployment.yaml
kubectl create -f nodered-service-lb.yaml

Locate IP address of Node-Red

kubectl get svc -n nodered

Example:

NAME      TYPE           CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE
nodered   LoadBalancer   10.43.233.129   10.0.11.102   80:31063/TCP   8m33s

This example tells us that Node-Red is now available on 10.0.11.102 on port 80