Rnt k3s

k3s-follower/k3s-follower.md

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+![K3S logo](https://k3s.io/images/logo-k3s.svg "K3S Logo")
+
+## What is K3S?
+
+---
+
+Lightweight Kubernetes
+The certified Kubernetes distribution built for IoT & Edge computing
+
+The K3s-Follower is responsible for running the kubelet and kube-proxy. In addition:
+
+Flannel as embedded process
+Containerd as the container runtime
+Internal load balancer that load-balances connections between all API servers in HA configurations
+Network policy controller to enforce network policies
+
+## Features
+
+---
+
+-Perfect for Edge
+K3s is a highly available, certified Kubernetes distribution designed for production workloads in unattended, resource-constrained, remote locations or inside IoT appliances.
+
+-Simplified & Secure
+K3s is packaged as a single <50MB binary that reduces the dependencies and steps needed to install, run and auto-update a production Kubernetes cluster.
+
+-Optimized for ARM
+Both ARM64 and ARMv7 are supported with binaries and multiarch images available for both. K3s works great from something as small as a Raspberry Pi to an AWS a1.4xlarge 32GiB server.
+
+## Installation
+
+---
+
+1. Select the devices to which K3S-Follower will be installed from 'Devices' page.
+
+2. Navigate to the 'App Marketplace' tab and select the 'K3S-Follower' application.
+
+3. The 'Install Now' button should now appear near the top of the screen. Select this button.
+
+4. Give your installation a name and fill all the parameters. Click 'Install K3S-Follower' in the bottom right corner.
+
+## Required Parameters
+
+---
+
+**K3S_TOKEN**
+Secret token used for joining new nodes
+
+**IP_ADDRESS**
+IP address of the leader node
+
+## Additional Parameters
+
+---
+
+**Installation Name**
+
+Here you will put your app name. Although the app name is MariaDB on the portal, you can personalize the name that is shown on the device's Applications.
+
+**INSTALL_K3S_VERSION**
+Version of k3s to download from github.
+
+## Using K3S
+
+---
+
+### Device Shell
+
+Use device shell to interact with K3S using kubectl commands. To see the nodes that are part of your cluster, run:
+
+`kubectl get nodes`
+
+For more information about commands visit <https://rancher.com/docs/k3s/latest/en/>
+
+### K3S Dashboard
+
+Dashboard is a web-based Kubernetes user interface. You can use Dashboard to deploy containerized applications to a Kubernetes cluster, troubleshoot your containerized application, and manage the cluster resources.
+
+K3S Dashboard will be available soon to install from the App Marketplace.
+
+## OS Architectures
+
+---
+
+- Arm64
+
+## Limitations / Known issues
+
+---
+
+N/A
+
+## K3S Platform Video
+
+---
+
+[![Demo Image](http://img.youtube.com/vi/2LNxGVS81mE/0.jpg)](https://www.youtube.com/watch?v=2LNxGVS81mE)
+
+## Docs
+
+---
+
+For more information: <[https://rancher.com/docs/k3s/latest/en/]>

k3s-follower/package.json

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+{
+    "name": "k3s-follower",
+    "display_name": "K3s",
+    "description": "Initialize K3s cluster",
+    "parameters": [
+        {
+            "name": "K3S_TOKEN",
+            "display_name": "Secret token",
+            "description": "Secret token used for joining new nodes" ,
+            "type": "string",
+            "required": true
+        },
+        {
+            "name": "IP_ADDRESS",
+            "display_name": "Leader IP",
+            "description": "IP address of the leader node" ,
+            "type": "string",
+            "required": true
+        },
+        {
+            "name": "INSTALL_K3S_VERSION",
+            "display_name": "K3S VERSION",
+            "description": "Version of k3s to download from github." ,
+            "type": "string",
+            "required": false
+        }
+    ],
+    "main": "k3s-follower/run.sh",
+    "dependencies": [
+      "k3s-follower/run.sh",
+      "k3s-follower/install_k3s.sh",
+      "utils/cachengo.sh"
+    ]
+  }

k3s-follower/run.sh

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+#!/bin/bash
+
+source "utils/cachengo.sh"
+source "k3s-follower/install_k3s.sh"
+
+function do_install {
+  echo "Running functions"
+  if [ -n "$IP_ADDRESS" ]; then
+    echo "Setting up k3s URL"
+    export K3S_URL="https://$IP_ADDRESS:6443"
+  fi 
+    verify_system
+    setup_env "$@"
+    download_and_verify
+    setup_selinux
+    create_symlinks
+    create_killall
+    create_uninstall
+    systemd_disable
+    create_env_file
+    create_service_file
+    service_enable_and_start  
+  if [[ -f /var/lib/rancher/k3s/server/node-token ]]; then
+    declare_secret k3s_token $( cat /var/lib/rancher/k3s/server/node-token )
+  fi    
+}
+
+function do_uninstall {
+  if [ -f /usr/local/bin/k3s-uninstall.sh ]; then
+    (exec "/usr/local/bin/k3s-uninstall.sh")
+  else
+    (exec "/usr/local/bin/k3s-agent-uninstall.sh")
+  fi    
+}
+
+case "$1" in
+  install) do_install ;;
+  uninstall) do_uninstall ;;
+esac