Installing script for k3s nodes

scripts/k3s-install.sh

@@ -0,0 +1,96 @@
+#!/usr/bin/env bash
+
+set -E -o errexit -o nounset -o pipefail
+
+readonly SOURCE=${BASH_SOURCE:-k3s-install}
+readonly SCRIPT_NAME=$(basename "$SOURCE")
+readonly ERROR_CODE=90
+
+function print_help() {
+  cat <<-EOT
+use: $SCRIPT_NAME <action> [args]
+actions:
+  token
+  server
+  agent <server-url> <node-token>
+  status server|agent
+  config
+  help
+EOT
+  exit $ERROR_CODE
+}
+
+function read_token() {
+  cat /var/lib/rancher/k3s/server/node-token
+}
+
+function install_server() {
+  curl -sfL https://get.k3s.io | sh -
+}
+
+function install_agent() {  
+  curl -sfL https://get.k3s.io | K3S_URL="$1" K3S_TOKEN="$2" sh -
+}
+
+function status_server() {
+  systemctl status k3s
+}
+
+function status() {
+  case $1 in
+    server)
+      systemctl status k3s
+      ;;
+    agent)
+      systemctl status k3s-agent
+      ;;
+    *)
+      echo "Unknown k3s type: $1"
+      exit $ERROR_CODE
+      ;;
+  esac
+}
+
+function show_config_path() {
+  echo "/etc/rancher/k3s/k3s.yaml"
+}
+
+if [ "$#" == "0" ]; then
+  print_help
+fi
+
+action=$1
+shift
+
+case "$action" in
+  -h|--help|help)
+    print_help
+    ;;
+
+  token)
+    read_token
+    ;;
+
+  server)
+    install_server
+    ;;
+
+  agent)
+    k3s_url="$1"
+    k3s_token="$2"
+    install_agent "$k3s_url" "$k3s_token"
+    ;;
+
+  status)
+    status $1
+    ;;
+
+  config)
+    show_config_path
+    ;;
+
+  *)
+    echo "Unknown action: $action"
+    exit $ERROR_CODE
+    ;;
+esac