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First commit of new postinstaller
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pve-zfs-postinstall.sh
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189
pve-zfs-postinstall.sh
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#!/bin/bash
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#
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# This script configures basic settings and install standard tools on your Proxmox VE Server with ZFS storage
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#
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# Features:
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# - Configure ZFS ARC Cache
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# - Configure vm.swappiness
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# - Install and configure zfs-auto-snapshot
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# - Switch pve-enterprise/pve-no-subscription repo
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# - Disable "No subscription message" in webinterface in no-subscription mode
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# - Update system to the latest version
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# - Install common tools
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# - Install Proxmox SDN Extensions
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# - Configure automatic backup of /etc Folder
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# - Configure locales
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# - SSH server hardening
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# - Configure proxmox mail delivery with postfix
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# - Adjust default volblocksize for Proxmox zfspool storages
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# - Create zfspool storage for swap disks if not exists
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#
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#
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# Author: (C) 2023 Thorsten Spille <thorsten@bashclub.org>
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set -uo pipefail
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#### INITIAL VARIABLES ####
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PROG=$(basename "$0")
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# Required tools for usage in postinstall
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REQUIRED_TOOLS="curl ifupdown2 git gron libsasl2-modules lsb-release libpve-network-perl postfix ssl-cert zfs-auto-snapshot"
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# Optional tools to install
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OPTIONAL_TOOLS="dnsutils ethtool htop iftop jq lshw lsscsi mc net-tools nvme-cli rpl screen smartmontools sudo sysstat tmux unzip vim"
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# Settings for Backup of /etc folder
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PVE_CONF_BACKUP_TARGET=rpool/pveconf
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PVE_CONF_BACKUP_CRON_TIMER="3,18,33,48 * * * *"
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# Round factor to set L1ARC cache (Megabytes)
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ROUND_FACTOR=512
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# get total size of all zpools
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ZPOOL_SIZE_SUM_BYTES=0
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for line in $(zpool list -o size -Hp); do ZPOOL_SIZE_SUM_BYTES=$(($ZPOOL_SIZE_SUM_BYTES+$line)); done
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# get information about available ram
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MEM_TOTAL_BYTES=$(($(awk '/MemTotal/ {print $2}' /proc/meminfo) * 1024))
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# get values if defaults are set
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ARC_MAX_DEFAULT_BYTES=$(($MEM_TOTAL_BYTES / 2))
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ARC_MIN_DEFAULT_BYTES=$(($MEM_TOTAL_BYTES / 32))
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# get current settings
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ARC_MIN_CUR_BYTES=$(cat /sys/module/zfs/parameters/zfs_arc_min)
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ARC_MAX_CUR_BYTES=$(cat /sys/module/zfs/parameters/zfs_arc_max)
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# get vm.swappiness
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SWAPPINESS=$(cat /proc/sys/vm/swappiness)
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# zfs-auto-snapshot default values
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declare -A auto_snap_keep=( ["frequent"]="12" ["hourly"]="96" ["daily"]="14" ["weekly"]="6" ["monthly"]="3" )
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#### FUNCTIONS ####
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roundup(){
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echo $(((($1 + $ROUND_FACTOR) / $ROUND_FACTOR) * $ROUND_FACTOR))
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}
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roundoff(){
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echo $((($1 / $ROUND_FACTOR) * $ROUND_FACTOR))
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}
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isnumber(){
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re='^[0-9]+$'
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if ! [[ $1 =~ $re ]] ; then
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return 1
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else
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return 0
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fi
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}
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inputbox_int(){
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cancel=0
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while true; do
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if ! out=$(whiptail --title "$1" --backtitle "$PROG" --inputbox "$2" $3 76 $4 3>&1 1>&2 2>&3) ; then
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cancel=1 ; break
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fi
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if isnumber $out; then
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break
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fi
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done
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echo $out
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return $cancel
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}
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cancel_dialog() {
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whiptail --title "CANCEL POSTINSTALL" --backtitle $PROG --msgbox "Postinstall was cancelled by user interaction" 8 76 3>&1 1>&2 2>&3
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exit 127
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}
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arc_suggestion(){
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ZFS_ARC_MIN_MEGABYTES=$(roundoff $(($ZPOOL_SIZE_SUM_BYTES / 2048 / 1024 / 1024)))
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ZFS_ARC_MAX_MEGABYTES=$(roundup $(($ZPOOL_SIZE_SUM_BYTES / 1024 / 1024 / 1024)))
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if [ $ARC_MIN_DEFAULT_BYTES -lt 33554432 ]; then ARC_MIN_DEFAULT_MB="32" ; else ARC_MIN_DEFAULT_MB="$(($ARC_MIN_DEFAULT_BYTES / 1024 / 1024))" ; fi
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if [ $ARC_MIN_CUR_BYTES -gt 0 ]; then ARC_MIN_CURRENT_MB="$(($ARC_MIN_CUR_BYTES / 1024 / 1024))" ; else ARC_MIN_CURRENT_MB="0" ; fi
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if [ $ARC_MAX_CUR_BYTES -gt 0 ]; then ARC_MAX_CURRENT_MB="$(($ARC_MAX_CUR_BYTES / 1024 / 1024))" ; else ARC_MAX_CURRENT_MB="0" ; fi
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if ! whiptail --title "CONFIGURE ZFS L1ARC SIZE" \
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--backtitle $PROG \
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--yes-button "Accept" \
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--no-button "Edit" \
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--yesno " Summary: \n \
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System Memory: $(($MEM_TOTAL_BYTES / 1024 / 1024)) MB\n \
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Zpool size (sum): $(($ZPOOL_SIZE_SUM_BYTES / 1024 / 1024)) MB\n \
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\n \
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Note: zfs_arc_min must always be lower than zfs_arc_max! \n\n \
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The L1ARC cache suggestion is calculated by size of all zpools \n\n \
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Suggested values: \n \
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zfs_arc_min: $(($ZFS_ARC_MIN_MEGABYTES)) MB (default: $ARC_MIN_DEFAULT_MB MB, current: $ARC_MIN_CURRENT_MB MB)\n \
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zfs_arc_max: $(($ZFS_ARC_MAX_MEGABYTES)) MB (default: $(($ARC_MAX_DEFAULT_BYTES / 1024 / 1024)) MB, current: $ARC_MAX_CURRENT_MB MB)\n" 17 76; then
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arc_set_manual
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fi
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}
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arc_set_manual() {
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if ! ZFS_ARC_MIN_MEGABYTES=$(inputbox_int 'CONFIGURE ZFS L1ARC MIN SIZE' 'Please enter zfs_arc_min in MB' 7 $ZFS_ARC_MIN_MEGABYTES) ; then cancel_dialog ; fi
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if ! ZFS_ARC_MAX_MEGABYTES=$(inputbox_int 'CONFIGURE ZFS L1ARC MAX SIZE' 'Please enter zfs_arc_max in MB' 7 $ZFS_ARC_MAX_MEGABYTES) ; then cancel_dialog ; fi
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}
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vm_swappiness () {
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if ! SWAPPINESS=$(inputbox_int "CONFIGURE SWAPPINESS" "Please enter percentage of free RAM to start swapping" 8 $SWAPPINESS) ; then cancel_dialog ; fi
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}
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auto_snapshot(){
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if dpkg -l zfs-auto-snapshot > /dev/null 2>&1 ; then
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for interval in "${!auto_snap_keep[@]}"; do
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if [[ "$interval" == "frequent" ]]; then
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auto_snap_keep[$interval]=$(cat /etc/cron.d/zfs-auto-snapshot | grep keep | cut -d' ' -f19 | cut -d '=' -f2)
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else
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auto_snap_keep[$interval]=$(cat /etc/cron.$interval/zfs-auto-snapshot | grep keep | cut -d' ' -f6 | cut -d'=' -f2)
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fi
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done
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fi
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for interval in "${!auto_snap_keep[@]}"; do
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if ! auto_snap_keep[$interval]=$(inputbox_int "CONFIGURE ZFS-AUTO-SNAPSHOT" "Please set number of $interval snapshots to keep" 7 ${auto_snap_keep[$interval]}) ; then cancel_dialog ; fi
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done
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}
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select_pve_repos() {
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pveenterprise=OFF
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pvenosubscription=OFF
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pvetest=OFF
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if [ -f /etc/apt/sources.list.d/pve-enterprise.list ]; then
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if $(grep -v '#' /etc/apt/sources.list.d/pve-enterprise.list | grep "pve-enterprise") ; then
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pveenterprise=ON
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else
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if [ -f /etc/apt/sources.list ]; then
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if $(grep -v '#' /etc/apt/sources.list | grep "pve-no-subscription") ; then
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pvenosubscription=ON
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elif $(grep -v '#' /etc/apt/sources.list | grep "pvetest") ; then
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pvetest=ON
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else
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pveenterprise=ON
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fi
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fi
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fi
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whiptail --title "SELECT PVE REPOSITORY" --backtitle "$PROG" \
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--radiolist "Choose Proxmox VE repository" 20 76 4 \
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"pve-enterprise" "Proxmox VE Enterprise repository" "$pveenterprise" \
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"pve-no-subscription" "Proxmox VE No Subscription repository" "$pvenosubscription" \
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"pvetest" "Proxmox VE Testing repository" "$pvetest"
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}
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source /etc/os-release
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# Calculate and suggest values for ZFS L1ARC cache
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arc_suggestion
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# Set swapping behaviour
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vm_swappiness
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# Configure count per interval of zfs-auto-snapshot
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auto_snapshot
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# Select proxmox repository
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select_pve_repos
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