Create node-red_container.sh

ct/node-red_container.sh

@@ -0,0 +1,169 @@
+#!/usr/bin/env bash
+
+while true; do
+    read -p "This will create a New Node-Red LXC Container. Proceed(y/n)?" yn
+    case $yn in
+        [Yy]* ) break;;
+        [Nn]* ) exit;;
+        * ) echo "Please answer yes or no.";;
+    esac
+done
+
+# Setup script environment
+set -o errexit  #Exit immediately if a pipeline returns a non-zero status
+set -o errtrace #Trap ERR from shell functions, command substitutions, and commands from subshell
+set -o nounset  #Treat unset variables as an error
+set -o pipefail #Pipe will exit with last non-zero status if applicable
+shopt -s expand_aliases
+alias die='EXIT=$? LINE=$LINENO error_exit'
+trap die ERR
+trap cleanup EXIT
+
+function error_exit() {
+  trap - ERR
+  local DEFAULT='Unknown failure occured.'
+  local REASON="\e[97m${1:-$DEFAULT}\e[39m"
+  local FLAG="\e[91m[ERROR] \e[93m$EXIT@$LINE"
+  msg "$FLAG $REASON"
+  [ ! -z ${CTID-} ] && cleanup_ctid
+  exit $EXIT
+}
+function warn() {
+  local REASON="\e[97m$1\e[39m"
+  local FLAG="\e[93m[WARNING]\e[39m"
+  msg "$FLAG $REASON"
+}
+function info() {
+  local REASON="$1"
+  local FLAG="\e[36m[INFO]\e[39m"
+  msg "$FLAG $REASON"
+}
+function msg() {
+  local TEXT="$1"
+  echo -e "$TEXT"
+}
+function cleanup_ctid() {
+  if [ ! -z ${MOUNT+x} ]; then
+    pct unmount $CTID
+  fi
+  if $(pct status $CTID &>/dev/null); then
+    if [ "$(pct status $CTID | awk '{print $2}')" == "running" ]; then
+      pct stop $CTID
+    fi
+    pct destroy $CTID
+  elif [ "$(pvesm list $STORAGE --vmid $CTID)" != "" ]; then
+    pvesm free $ROOTFS
+  fi
+}
+function cleanup() {
+  popd >/dev/null
+  rm -rf $TEMP_DIR
+}
+function load_module() {
+  if ! $(lsmod | grep -Fq $1); then
+    modprobe $1 &>/dev/null || \
+      die "Failed to load '$1' module."
+  fi
+  MODULES_PATH=/etc/modules
+  if ! $(grep -Fxq "$1" $MODULES_PATH); then
+    echo "$1" >> $MODULES_PATH || \
+      die "Failed to add '$1' module to load at boot."
+  fi
+}
+TEMP_DIR=$(mktemp -d)
+pushd $TEMP_DIR >/dev/null
+
+# Download setup script
+wget -qL https://raw.githubusercontent.com/tteck/Proxmox/main/setup/node-red_setup.sh
+
+# Detect modules and automatically load at boot
+load_module overlay
+
+# Select storage location
+while read -r line; do
+  TAG=$(echo $line | awk '{print $1}')
+  TYPE=$(echo $line | awk '{printf "%-10s", $2}')
+  FREE=$(echo $line | numfmt --field 4-6 --from-unit=K --to=iec --format %.2f | awk '{printf( "%9sB", $6)}')
+  ITEM="  Type: $TYPE Free: $FREE "
+  OFFSET=2
+  if [[ $((${#ITEM} + $OFFSET)) -gt ${MSG_MAX_LENGTH:-} ]]; then
+    MSG_MAX_LENGTH=$((${#ITEM} + $OFFSET))
+  fi
+  STORAGE_MENU+=( "$TAG" "$ITEM" "OFF" )
+done < <(pvesm status -content rootdir | awk 'NR>1')
+if [ $((${#STORAGE_MENU[@]}/3)) -eq 0 ]; then
+  warn "'Container' needs to be selected for at least one storage location."
+  die "Unable to detect valid storage location."
+elif [ $((${#STORAGE_MENU[@]}/3)) -eq 1 ]; then
+  STORAGE=${STORAGE_MENU[0]}
+else
+  while [ -z "${STORAGE:+x}" ]; do
+    STORAGE=$(whiptail --title "Storage Pools" --radiolist \
+    "Which storage pool you would like to use for the container?\n\n" \
+    16 $(($MSG_MAX_LENGTH + 23)) 6 \
+    "${STORAGE_MENU[@]}" 3>&1 1>&2 2>&3) || exit
+  done
+fi
+info "Using '$STORAGE' for storage location."
+
+# Get the next guest VM/LXC ID
+CTID=$(pvesh get /cluster/nextid)
+info "Container ID is $CTID."
+
+# Download latest Debian 11 LXC template
+msg "Updating LXC template list..."
+pveam update >/dev/null
+msg "Downloading LXC template..."
+OSTYPE=debian
+OSVERSION=${OSTYPE}-11
+mapfile -t TEMPLATES < <(pveam available -section system | sed -n "s/.*\($OSVERSION.*\)/\1/p" | sort -t - -k 2 -V)
+TEMPLATE="${TEMPLATES[-1]}"
+pveam download local $TEMPLATE >/dev/null ||
+  die "A problem occured while downloading the LXC template."
+
+# Create variables for container disk
+STORAGE_TYPE=$(pvesm status -storage $STORAGE | awk 'NR>1 {print $2}')
+case $STORAGE_TYPE in
+  dir|nfs)
+    DISK_EXT=".raw"
+    DISK_REF="$CTID/"
+    ;;
+  zfspool)
+    DISK_PREFIX="subvol"
+    DISK_FORMAT="subvol"
+    ;;
+esac
+DISK=${DISK_PREFIX:-vm}-${CTID}-disk-0${DISK_EXT-}
+ROOTFS=${STORAGE}:${DISK_REF-}${DISK}
+
+# Create LXC
+msg "Creating LXC container..."
+DISK_SIZE=4G
+pvesm alloc $STORAGE $CTID $DISK $DISK_SIZE --format ${DISK_FORMAT:-raw} >/dev/null
+if [ "$STORAGE_TYPE" == "zfspool" ]; then
+  warn "Some containers may not work properly due to ZFS not supporting 'fallocate'."
+else
+  mkfs.ext4 $(pvesm path $ROOTFS) &>/dev/null
+fi
+ARCH=$(dpkg --print-architecture)
+HOSTNAME=nodered
+TEMPLATE_STRING="local:vztmpl/${TEMPLATE}"
+pct create $CTID $TEMPLATE_STRING -arch $ARCH -features nesting=1 \
+  -hostname $HOSTNAME -net0 name=eth0,bridge=vmbr0,ip=dhcp -onboot 1 -cores 1 -memory 1024 \
+  -ostype $OSTYPE -rootfs $ROOTFS,size=$DISK_SIZE -storage $STORAGE >/dev/null
+
+
+# Set container timezone to match host
+MOUNT=$(pct mount $CTID | cut -d"'" -f 2)
+ln -fs $(readlink /etc/localtime) ${MOUNT}/etc/localtime
+pct unmount $CTID && unset MOUNT
+
+# Setup container
+msg "Starting LXC container..."
+pct start $CTID
+pct push $CTID node-red_setup.sh /node-red_setup.sh -perms 755
+pct exec $CTID /node-red_setup.sh
+
+# Get network details and show completion message
+IP=$(pct exec $CTID ip a s dev eth0 | sed -n '/inet / s/\// /p' | awk '{print $2}')
+info "Successfully created Node-RED LXC Container to $CTID at IP Address ${IP}"