Create create_lxc.sh

unpriv/create_lxc.sh

@@ -0,0 +1,121 @@
+#!/usr/bin/env bash
+
+set -o errexit
+set -o errtrace
+set -o nounset
+set -o pipefail
+shopt -s expand_aliases
+alias die='EXIT=$? LINE=$LINENO error_exit'
+BL=`echo "\033[36m"`
+RD=`echo "\033[01;31m"`
+CM='\xE2\x9C\x94\033'
+GN=`echo "\033[1;92m"`
+CL=`echo "\033[m"`
+trap die ERR
+
+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" 1>&2
+  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 select_storage() {
+  local CLASS=$1
+  local CONTENT
+  local CONTENT_LABEL
+  case $CLASS in
+    container) CONTENT='rootdir'; CONTENT_LABEL='Container';;
+    template) CONTENT='vztmpl'; CONTENT_LABEL='Container template';;
+    *) false || die "Invalid storage class.";;
+  esac
+
+  local -a MENU
+  while read -r line; do
+    local TAG=$(echo $line | awk '{print $1}')
+    local TYPE=$(echo $line | awk '{printf "%-10s", $2}')
+    local FREE=$(echo $line | numfmt --field 4-6 --from-unit=K --to=iec --format %.2f | awk '{printf( "%9sB", $6)}')
+    local ITEM="  Type: $TYPE Free: $FREE "
+    local OFFSET=2
+    if [[ $((${#ITEM} + $OFFSET)) -gt ${MSG_MAX_LENGTH:-} ]]; then
+      local MSG_MAX_LENGTH=$((${#ITEM} + $OFFSET))
+    fi
+    MENU+=( "$TAG" "$ITEM" "OFF" )
+  done < <(pvesm status -content $CONTENT | awk 'NR>1')
+
+  if [ $((${#MENU[@]}/3)) -eq 0 ]; then            
+    warn "'$CONTENT_LABEL' needs to be selected for at least one storage location."
+    die "Unable to detect valid storage location."
+  elif [ $((${#MENU[@]}/3)) -eq 1 ]; then          
+    printf ${MENU[0]}
+  else                                             
+    local STORAGE
+    while [ -z "${STORAGE:+x}" ]; do              
+      STORAGE=$(whiptail --title "Storage Pools" --radiolist \
+      "Which storage pool you would like to use for the ${CONTENT_LABEL,,}?\n\n" \
+      16 $(($MSG_MAX_LENGTH + 23)) 6 \
+      "${MENU[@]}" 3>&1 1>&2 2>&3) || die "Menu aborted."
+    done
+    printf $STORAGE
+  fi
+}
+
+[[ "${CTID:-}" ]] || die "You need to set 'CTID' variable."
+[[ "${PCT_OSTYPE:-}" ]] || die "You need to set 'PCT_OSTYPE' variable."
+
+[ "$CTID" -ge "100" ] || die "ID cannot be less than 100."
+
+if pct status $CTID &>/dev/null; then
+  warn "ID '$CTID' is already in use."
+  unset CTID
+  die "Cannot use ID that is already in use."
+fi
+
+TEMPLATE_STORAGE=$(select_storage template) || exit
+info "Using ${BL}$TEMPLATE_STORAGE${CL} for Template Storage."
+
+CONTAINER_STORAGE=$(select_storage container) || exit
+info "Using ${BL}$CONTAINER_STORAGE${CL} for Container Storage."
+
+echo -en "${GN} Updating LXC Template List... "
+pveam update >/dev/null
+echo -e "${CM}${CL} \r"
+
+TEMPLATE_SEARCH=${PCT_OSTYPE}-${PCT_OSVERSION:-}
+mapfile -t TEMPLATES < <(pveam available -section system | sed -n "s/.*\($TEMPLATE_SEARCH.*\)/\1/p" | sort -t - -k 2 -V)
+[ ${#TEMPLATES[@]} -gt 0 ] || die "Unable to find a template when searching for '$TEMPLATE_SEARCH'."
+TEMPLATE="${TEMPLATES[-1]}"
+
+if ! pveam list $TEMPLATE_STORAGE | grep -q $TEMPLATE; then
+  echo -en "${GN} Downloading LXC Template... "
+  echo -e "${CM}${CL} \r"
+  pveam download $TEMPLATE_STORAGE $TEMPLATE >/dev/null ||
+    die "A problem occured while downloading the LXC template."
+fi
+
+DEFAULT_PCT_OPTIONS=(
+  -arch $(dpkg --print-architecture))
+  
+PCT_OPTIONS=( ${PCT_OPTIONS[@]:-${DEFAULT_PCT_OPTIONS[@]}} )
+[[ " ${PCT_OPTIONS[@]} " =~ " -rootfs " ]] || PCT_OPTIONS+=( -rootfs $CONTAINER_STORAGE:${PCT_DISK_SIZE:-8} )
+
+echo -en "${GN} Creating LXC Container... "
+pct create $CTID ${TEMPLATE_STORAGE}:vztmpl/${TEMPLATE} ${PCT_OPTIONS[@]} >/dev/null ||
+  die "A problem occured while trying to create container."
+echo -e "${CM}${CL} \r"
+info "LXC Container ${BL}$CTID${CL} was successfully created."