Proxmox/ct/create_lxc.sh

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#!/usr/bin/env bash
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if [ "$VERBOSE" == "yes" ]; then set -x; fi
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YW=$(echo "\033[33m")
BL=$(echo "\033[36m")
RD=$(echo "\033[01;31m")
GN=$(echo "\033[1;92m")
CL=$(echo "\033[m")
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CM="${GN}${CL}"
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CROSS="${RD}${CL}"
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BFR="\\r\\033[K"
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HOLD="-"
set -Eeuo pipefail
trap 'error_handler $LINENO "$BASH_COMMAND"' ERR
function error_handler() {
local exit_code="$?"
local line_number="$1"
local command="$2"
local error_message="${RD}[ERROR]${CL} in line ${RD}$line_number${CL}: exit code ${RD}$exit_code${CL}: while executing command ${YW}$command${CL}"
echo -e "\n$error_message\n"
}
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function msg_info() {
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local msg="$1"
echo -ne " ${HOLD} ${YW}${msg}..."
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}
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function msg_ok() {
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local msg="$1"
echo -e "${BFR} ${CM} ${GN}${msg}${CL}"
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}
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function msg_error() {
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local msg="$1"
echo -e "${BFR} ${CROSS} ${RD}${msg}${CL}"
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}
msg_info "Validating Storage"
VALIDCT=$(pvesm status -content rootdir | awk 'NR>1')
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if [ -z "$VALIDCT" ]; then
msg_error "Unable to detect a valid Container Storage location."
exit 1
fi
VALIDTMP=$(pvesm status -content vztmpl | awk 'NR>1')
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if [ -z "$VALIDTMP" ]; then
msg_error "Unable to detect a valid Template Storage location."
exit 1
fi
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function select_storage() {
local CLASS=$1
local CONTENT
local CONTENT_LABEL
case $CLASS in
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container)
CONTENT='rootdir'
CONTENT_LABEL='Container'
;;
template)
CONTENT='vztmpl'
CONTENT_LABEL='Container template'
;;
*) false || exit "Invalid storage class." ;;
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esac
local -a MENU
while read -r line; do
local TAG=$(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} + $OFFSET))
fi
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MENU+=("$TAG" "$ITEM" "OFF")
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done < <(pvesm status -content $CONTENT | awk 'NR>1')
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if [ $((${#MENU[@]} / 3)) -eq 1 ]; then
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printf ${MENU[0]}
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else
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local STORAGE
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while [ -z "${STORAGE:+x}" ]; do
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STORAGE=$(whiptail --title "Storage Pools" --radiolist \
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"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) || exit "Menu aborted."
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done
printf $STORAGE
fi
}
[[ "${CTID:-}" ]] || exit "You need to set 'CTID' variable."
[[ "${PCT_OSTYPE:-}" ]] || exit "You need to set 'PCT_OSTYPE' variable."
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[ "$CTID" -ge "100" ] || exit "ID cannot be less than 100."
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if pct status $CTID &>/dev/null; then
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echo -e "ID '$CTID' is already in use."
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unset CTID
exit "Cannot use ID that is already in use."
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fi
TEMPLATE_STORAGE=$(select_storage template) || exit
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msg_ok "Using ${BL}$TEMPLATE_STORAGE${CL} ${GN}for Template Storage."
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CONTAINER_STORAGE=$(select_storage container) || exit
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msg_ok "Using ${BL}$CONTAINER_STORAGE${CL} ${GN}for Container Storage."
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msg_info "Updating LXC Template List"
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pveam update >/dev/null
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msg_ok "Updated LXC Template List"
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TEMPLATE_SEARCH=${PCT_OSTYPE}-${PCT_OSVERSION:-}
mapfile -t TEMPLATES < <(pveam available -section system | sed -n "s/.*\($TEMPLATE_SEARCH.*\)/\1/p" | sort -t - -k 2 -V)
[ ${#TEMPLATES[@]} -gt 0 ] || exit "Unable to find a template when searching for '$TEMPLATE_SEARCH'."
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TEMPLATE="${TEMPLATES[-1]}"
if ! pveam list $TEMPLATE_STORAGE | grep -q $TEMPLATE; then
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msg_info "Downloading LXC Template"
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pveam download $TEMPLATE_STORAGE $TEMPLATE >/dev/null ||
exit "A problem occured while downloading the LXC template."
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msg_ok "Downloaded LXC Template"
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fi
DEFAULT_PCT_OPTIONS=(
-arch $(dpkg --print-architecture))
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PCT_OPTIONS=(${PCT_OPTIONS[@]:-${DEFAULT_PCT_OPTIONS[@]}})
[[ " ${PCT_OPTIONS[@]} " =~ " -rootfs " ]] || PCT_OPTIONS+=(-rootfs $CONTAINER_STORAGE:${PCT_DISK_SIZE:-8})
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msg_info "Creating LXC Container"
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pct create $CTID ${TEMPLATE_STORAGE}:vztmpl/${TEMPLATE} ${PCT_OPTIONS[@]} >/dev/null ||
exit "A problem occured while trying to create container."
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msg_ok "LXC Container ${BL}$CTID${CL} ${GN}was successfully created."