Proxmox/ct/create_lxc.sh

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#!/usr/bin/env bash
YW=`echo "\033[33m"`
BL=`echo "\033[36m"`
RD=`echo "\033[01;31m"`
GN=`echo "\033[1;92m"`
CL=`echo "\033[m"`
CM="${GN}${CL}"
BFR="\\r\\033[K"
HOLD="-"
set -o errexit
set -o errtrace
set -o nounset
set -o pipefail
shopt -s expand_aliases
alias die='EXIT=$? LINE=$LINENO error_exit'
trap die ERR
function error_exit() {
trap - ERR
local reason="Unknown failure occured."
local msg="${1:-$reason}"
local flag="${RD}‼ ERROR ${CL}$EXIT@$LINE"
echo -e "$flag $msg" 1>&2
exit $EXIT
}
function msg_info() {
local msg="$1"
echo -ne " ${HOLD} ${YW}${msg}..."
}
function msg_ok() {
local msg="$1"
echo -e "${BFR} ${CM} ${GN}${msg}${CL}"
}
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
msg_ok "Using ${BL} $TEMPLATE_STORAGE${CL} ${GN}for Template Storage."
CONTAINER_STORAGE=$(select_storage container) || exit
msg_ok "Using ${BL} $CONTAINER_STORAGE${CL} ${GN}for Container Storage."
msg_info "Updating LXC Template List"
pveam update >/dev/null
msg_ok "Updated LXC Template List"
TEMPLATE_SEARCH=${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
msg_info "Downloading LXC Template"
pveam download $TEMPLATE_STORAGE $TEMPLATE >/dev/null ||
die "A problem occured while downloading the LXC template."
msg_ok "Downloaded 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} )
msg_info "Creating LXC Container"
pct create $CTID ${TEMPLATE_STORAGE}:vztmpl/${TEMPLATE} ${PCT_OPTIONS[@]} >/dev/null ||
die "A problem occured while trying to create container."
msg_ok "LXC Container ${BL}$CTID${CL} ${GN}was successfully created."