557 lines
20 KiB
Bash
557 lines
20 KiB
Bash
#!/bin/bash
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: '
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______________________________________________
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PVE Kernel Cleaner
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By Jordan Hillis
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jordan@hillis.email
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https://jordanhillis.com
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______________________________________________
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MIT License
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Copyright (c) 2023 Jordan Hillis - jordan@hillis.email - https://jordanhillis.com
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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______________________________________________
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'
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# Percentage of used space in the /boot which would consider it critically full
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boot_critical_percent="80"
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# To check for updates or not
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check_for_updates=true
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# Dry run mode is for testing without actually removing anything
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dry_run=false
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# Current kernel
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current_kernel=$(uname -r)
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# Name of the program
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program_name="pvekclean"
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# Version
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version="2.0.2"
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# Text Colors
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black="\e[38;2;0;0;0m"
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gray="\e[30m"
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red="\e[31m"
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green="\e[32m"
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yellow="\e[33m"
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blue="\e[34m"
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magenta="\e[35m"
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cyan="\e[36m"
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white="\e[37m"
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orange="\e[38;5;202m"
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# Background Colors
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bg_black="\e[40m"
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bg_red="\e[41m"
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bg_green="\e[42m"
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bg_yellow="\e[43m"
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bg_blue="\e[44m"
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bg_magenta="\e[45m"
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bg_cyan="\e[46m"
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bg_white="\e[47m"
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bg_orange="\e[48;5;202m"
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# Text Styles
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bold="\e[1m"
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# Reset formatting
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reset="\e[0m"
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# Force purging without dialog confirms
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force_purge=false
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# Allow removing kernels newer than current
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remove_newer=false
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# Check if script is ran as root, if not exit
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check_root() {
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if [[ $EUID -ne 0 ]]; then
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printf "${bold}[!] Error:${reset} this script must be ran as the root user.\n"
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exit 1
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fi
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}
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# Shown current version
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version() {
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printf $version"\n"
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exit 0
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}
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# Header for PVE Kernel Cleaner
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header_info() {
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echo -e " ${bg_black}${orange} ${reset}
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${bg_black}${orange} █▀▀█ ▀█ █▀ █▀▀ █ █ █▀▀ █▀▀█ █▀▀▄ █▀▀ █ ${reset}
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${bg_black}${orange} █ █ █▄█ █▀▀ █▀▄ █▀▀ █▄▄▀ █ █ █▀▀ █ ${reset}
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${bg_black}${orange} █▀▀▀ ▀ ▀▀▀ ▀ ▀ ▀▀▀ ▀ ▀▀ ▀ ▀ ▀▀▀ ▀▀▀ ${reset}
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${bg_black}${orange} ${reset}
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${bg_black}${white} █▀▀ █ █▀▀ █▀▀█ █▀▀▄ █▀▀ █▀▀█ ${reset}
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${bg_black}${white} █ █ █▀▀ █▄▄█ █ █ █▀▀ █▄▄▀ ${white}${bold}⎦˚◡˚⎣ v$version ${reset}
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${bg_black}${white} ▀▀▀ ▀▀▀ ▀▀▀ ▀ ▀ ▀ ▀ ▀▀▀ ▀ ▀▀ ${reset}
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${bg_orange}${black} ${bold}By Jordan Hillis [jordan@hillis.email] ${reset}
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___________________________________________
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"
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if [ "$dry_run" == "true" ]; then
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printf " ${bg_yellow}${black}${bold} DRY RUN MODE IS: ${red}ON ${reset}\n"
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printf "${bg_green}${bold}${black} This is what the script would do in regular mode ${reset}\n${bg_green}${bold}${black} (but without making actual changes) ${reset}\n\n"
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fi
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}
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# Function to get drive status based on usage percentage
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get_drive_status() {
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local usage=$1
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# Check if the input is a number
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if ! [[ $usage =~ ^[0-9]+$ ]]; then
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echo "${bold}N/A${reset}"
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else
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if (( usage <= 50 )); then
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echo "${bold}${green}Healthy${reset}"
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elif (( usage > 50 && usage <= 75 )); then
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echo "${bold}${orange}Moderate Capacity${reset}"
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else
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echo "${bold}${red}Critically Full${reset}"
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fi
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fi
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}
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# Show current system information
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kernel_info() {
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# Lastest kernel installed
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latest_kernel=$(dpkg --list | awk '/proxmox-kernel-.*-pve/{print $2}' | sed -n 's/proxmox-kernel-//p' | sort -V | tail -n 1 | tr -d '[:space:]')
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[ -z "$latest_kernel" ] && latest_kernel="N/A"
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# EFI or BIOS
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if [ -d /sys/firmware/efi ]; then
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printf " ${bold}Boot Method:${reset} EFI\n"
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else
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printf " ${bold}Boot Method:${reset} Legacy (BIOS)\n"
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fi
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# Show operating system used
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printf " ${bold}OS:${reset} $(cat /etc/os-release | grep "PRETTY_NAME" | sed 's/PRETTY_NAME=//g' | sed 's/["]//g' | awk '{print $0}')\n"
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# Get information about the /boot folder
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boot_info=($(echo $(df -Ph | grep /boot | tail -1) | sed 's/%//g'))
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boot_info=($(zfs get -H -o value used,available rpool/ROOT/pve-1))
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boot_used=${boot_info[0]}
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boot_avail=${boot_info[1]}
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boot_status=$(get_drive_status_percent "$boot_used" "$boot_avail")
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# Show information about the /boot
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printf " ${bold}Boot Disk:${reset} ${boot_info[4]}%% full [${boot_info[2]}/${boot_info[1]} used, ${boot_info[3]} free] \n"
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# Show current kernel in use
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printf " ${bold}Current Kernel:${reset} $current_kernel\n"
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# Check if they are running a PVE kernel
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if [[ "$current_kernel" == *"pve"* ]]; then
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# Check if we are running the latest kernel, if not warn
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if [[ "$latest_kernel" != *"$current_kernel"* ]]; then
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printf " ${bold}Latest Kernel:${reset} ${latest_kernel}\n"
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fi
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# Warn them that they aren't on a PVE kernel
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else
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printf "___________________________________________\n\n"
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printf "${bold}[!]${reset} Warning, you're not running a PVE kernel\n"
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# Ask them if they want to continue
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printf "${bold}[*]${reset} Would you like to continue [y/N] "
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read -n 1 -r
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printf "\n"
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if [[ $REPLY =~ ^[Yy]$ ]]; then
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# Continue on if they wish
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printf "${bold}[-]${reset} Alright, we will continue on\n"
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else
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# Exit script
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printf "\nGood bye!\n"
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exit 0
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fi
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fi
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printf "___________________________________________\n\n"
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}
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get_drive_status_percent() {
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used=$(echo $1 | sed 's/G//')
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avail=$(echo $2 | sed 's/G//')
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total=$(echo "$used + $avail" | bc)
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percent=$(echo "$used / $total * 100" | bc)
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if (( $(echo "$percent <= 50" | bc -l) )); then
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echo "${bold}${green}Healthy${reset}"
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elif (( $(echo "$percent > 50 && $percent <= 75" | bc -l) )); then
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echo "${bold}${orange}Moderate Capacity${reset}"
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else
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echo "${bold}${red}Critically Full${reset}"
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fi
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}
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# Usage information on how to use PVE Kernel Clean
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show_usage() {
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# Skip showing usage when force_purge is enabled
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if [ $force_purge == false ]; then
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printf "${bold}Usage:${reset} $(basename $0) [OPTION1] [OPTION2]...\n\n"
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printf " -k, --keep [number] Keep the specified number of most recent PVE kernels on the system\n"
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printf " Can be used with -f or --force for non-interactive removal\n"
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printf " -f, --force Force the removal of old PVE kernels without confirm prompts\n"
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printf " -rn, --remove-newer Remove kernels that are newer than the currently running kernel\n"
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printf " -s, --scheduler Have old PVE kernels removed on a scheduled basis\n"
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printf " -v, --version Shows current version of $program_name\n"
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printf " -r, --remove Uninstall $program_name from the system\n"
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printf " -i, --install Install $program_name to the system\n"
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printf " -d, --dry-run Run the program in dry run mode for testing without making system changes\n"
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printf "___________________________________________\n\n"
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fi
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}
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# Schedule PVE Kernel Cleaner at a time desired
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scheduler() {
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# Check if pvekclean is on the system, if not exit
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if [ ! -f /usr/local/sbin/$program_name ]; then
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printf "${bold}[!]${reset} Sorry $program_name is required to be installed on the system for this functionality.\n"
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exit 1
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fi
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# Check if cron is installed
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if ! [ -x "$(command -v crontab)" ]; then
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printf "${bold}[*]${reset} Error, cron does not appear to be installed.\n"
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printf " Please install cron with the command 'sudo apt-get install cron'\n\n"
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exit 1
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fi
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# Check if the cronjob exists on the system
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check_cron_exists=$(crontab -l | grep "$program_name")
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# Cronjob exists
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if [ -n "$check_cron_exists" ]; then
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# Get the current cronjob scheduling
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cron_current=$(crontab -l | grep "$program_name" | sed "s/[^a-zA-Z']/ /g" | sed -e "s/\b\(.\)/\u\1/g" | awk '{print $1;}')
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# Ask the user if they would like to remove the scheduling
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printf "${bold}[-]${reset} Would you like to remove the currently scheduled PVE Kernel Cleaner? (Current: $cron_current) [y/N] "
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read -n 1 -r
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if [[ $REPLY =~ ^[Yy]$ ]]; then
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# Remove the cronjob
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(crontab -l | grep -v "$program_name")| crontab -
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printf "\n[*] Successfully removed the ${cron_current,,} scheduled PVE Kernel Cleaner!\n"
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else
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# Keep it
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printf "\n\nAlright we will keep your current settings then.\n"
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fi
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# Cronjob does not exist
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else
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# Ask how often the would like to check for old PVE kernels
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printf "${bold}[-]${reset} How often would you like to check for old PVE kernels?\n 1) Daily\n 2) Weekly\n 3) Monthly\n\n - Enter a number option above? "
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read -r -p "" response
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case "$response" in
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1)
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cron_time="daily"
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;;
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2)
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cron_time="weekly"
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;;
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3)
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cron_time="monthly"
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;;
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*)
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printf "\nThat is not a valid option!\n"
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exit 1
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;;
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esac
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# Ask if they want to set a specific number of kernels to keep
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printf "${bold}[-]${reset} Enter the number of latest kernels to keep (or press Enter to skip): "
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read number_of_kernels
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if [[ "$number_of_kernels" =~ ^[0-9]+$ ]]; then
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kernel_option=" -k $number_of_kernels"
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printf "${bold}[-]${reset} Okay, we will keep at least $number_of_kernels kernels on the system."
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else
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kernel_option=""
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fi
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# Add the cronjob
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(crontab -l ; echo "@$cron_time /usr/local/sbin/$program_name -f$kernel_option")| crontab -
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printf "\n[-] Scheduled $cron_time PVE Kernel Cleaner successfully!\n"
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fi
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exit 0
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}
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# Installs PVE Kernel Cleaner for easier access
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install_program() {
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force_pvekclean_update=false
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local tmp_file="/tmp/.pvekclean_install_lock"
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local install=false
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local ask_interval=3600 # 1 hour in seconds
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# If pvekclean exists on the system
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if [ -e /usr/local/sbin/$program_name ]; then
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# Get current version of pvekclean
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pvekclean_installed_version=$(/usr/local/sbin/$program_name -v | awk '{printf $0}')
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# If the version differs, update it to the latest from the script
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if [ $version != $pvekclean_installed_version ] && [ $force_purge == false ]; then
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printf "${bold}[!]${reset} A new version of PVE Kernel Cleaner has been detected (Installed: $pvekclean_installed_version | New: $version).\n"
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printf "${bold}[*]${reset} Installing update...\n"
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force_pvekclean_update=true
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fi
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fi
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# Check if the file doesn't exist or it's been over an hour since the last ask
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if [ ! -e "$tmp_file" ] || [ ! -f "$tmp_file" ] || [ $(( $(date +%s) - $(cat "$tmp_file") )) -gt $ask_interval ] || [ $force_pvekclean_update == true ] || [ -n "$force_pvekclean_install" ]; then
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# If pvekclean does not exist on the system or force_purge is enabled
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if [ ! -f /usr/local/sbin/$program_name ] || [ $force_pvekclean_update == true ] || [ -n "$force_pvekclean_install" ]; then
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# Ask user if we can install it to their system
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if [ $force_purge == true ]; then
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REPLY="n"
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else
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# Update the timestamp in the file to record the time of the last ask
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echo $(date +%s) > "$tmp_file"
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# Ask if we can install it
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printf "${bold}[-]${reset} Can we install PVE Kernel Cleaner to your /usr/local/sbin for easier access [y/N] "
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read -n 1 -r
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printf "\n"
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fi
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# User agrees to have it installed
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if [[ $REPLY =~ ^[Yy]$ ]]; then
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# Copy the script to /usr/local/sbin and set execution permissions
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cp $0 /usr/local/sbin/$program_name
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chmod +x /usr/local/sbin/$program_name
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# Tell user how to use it
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printf "${bold}[*]${reset} Installed PVE Kernel Cleaner to /usr/local/sbin/$program_name\n"
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printf "${bold}[*]${reset} Run the command \"$program_name\" to begin using this program.\n"
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printf "${bold}[-]${reset} Run the command \"$program_name -r\" to remove this program at any time.\n"
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exit 0
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fi
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fi
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fi
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if [ -n "$force_pvekclean_install" ]; then
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exit 0
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fi
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}
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# Uninstall pvekclean from the system
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uninstall_program() {
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# If pvekclean exists on the system
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if [ -e /usr/local/sbin/$program_name ]; then
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# Confirm that they wish to remove it
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printf "${bold}[-]${reset} Are you sure that you would like to remove $program_name? [y/N] "
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read -n 1 -r
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printf "\n"
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if [[ $REPLY =~ ^[Yy]$ ]]; then
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# Remove the program
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rm -f /usr/local/sbin/$program_name
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printf "${bold}[*]${reset} Successfully removed PVE Kernel Cleaner from the system!\n"
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printf "${bold}[-]${reset} Sorry to see you go :(\n"
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else
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printf "\nExiting...\nThat was a close one ⎦˚◡˚⎣\n"
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fi
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exit 0
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else
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# Tell the user that it is not installed
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printf "${bold}[!]${reset} This program is not installed on the system.\n"
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exit 1
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fi
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}
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# PVE Kernel Clean main function
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pve_kernel_clean() {
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# Find all the PVE kernels on the system
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kernels=$(dpkg --list | grep -E "(pve-kernel|proxmox-kernel)-[0-9].*" | grep -E "Kernel Image" | grep -vE "${latest_kernel%-pve}|series|transitional" | awk '{print $2}' | sed -n 's/\(pve\|proxmox\)-kernel-\(.*\)/\2/p' | sort -V)
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# List of kernels that will be removed (adds them as the script goes on)
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kernels_to_remove=()
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# Boot drive status
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boot_drive_status=$(get_drive_status ${boot_info[4]})
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# Show space used, status and free space available
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printf "${bold}[*]${reset} Boot disk space used is ${bold}${boot_drive_status}${reset} at ${boot_info[4]}%% capacity (${boot_info[3]} free)\n"
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# For each kernel that was found via dpkg
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current_kernel_passed=false
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for kernel in $kernels
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do
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# Check if the kernel is already in the array
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if [[ " ${kernels_to_remove[@]} " =~ " $kernel " ]]; then
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continue # Skip adding it again
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fi
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# Only if not removing newer kernels and kernel matches the current kernel
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if [ "$(echo $kernel | grep "$current_kernel")" ]; then
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if [ "$remove_newer" == "false" ]; then
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break
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else
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current_kernel_passed=true
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continue
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fi
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# Add kernel to the list of removal since it is old
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else
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kernels_to_remove+=("$kernel") # Add the kernel to the array
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fi
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done
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# If remove_newer is set keep the last kernel installed as its newest
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# if [ "$remove_newer" == "true" ] && [ "$current_kernel_passed" == "true" ] && [ ${#kernels_to_remove[@]} -gt 0 ]; then
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# unset kernels_to_remove[-1]
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# fi
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# If keep_kernels is set we remove this number from the array to remove
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if [[ -n "$keep_kernels" ]] && [[ "$keep_kernels" =~ ^[0-9]+$ ]]; then
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if [ $keep_kernels -gt 0 ]; then
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printf "${bold}[*]${reset} The last ${bold}$keep_kernels${reset} kernel$([ "$keep_kernels" -eq 1 ] || echo 's') will be held back from being removed.\n"
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# Check if the number of kernels to keep is greater than or equal to the number of kernels in the array
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if [ "$keep_kernels" -ge "${#kernels_to_remove[@]}" ]; then
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# Set keep_kernels to the number of kernels in the array
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keep_kernels="${#kernels_to_remove[@]}"
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fi
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kernels_to_keep=("${kernels_to_remove[@]:${#kernels_to_remove[@]}-$keep_kernels:$keep_kernels}")
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kernels_to_remove=("${kernels_to_remove[@]::${#kernels_to_remove[@]}-$keep_kernels}")
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fi
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fi
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# Show kernels to be removed
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printf "${bold}[-]${reset} Searching for old PVE kernels on your system...\n"
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for kernel in "${kernels_to_remove[@]}"
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do
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printf " ${bold}${green}+${reset} \"$kernel\" added to the kernel remove list\n"
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done
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for kernel in "${kernels_to_keep[@]}"
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do
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printf " ${bold}${red}-${reset} \"$kernel\" is being held back from removal\n"
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done
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printf "${bold}[-]${reset} PVE kernel search complete!\n"
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# If there are no kernels to be removed then exit
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if [ ${#kernels_to_remove[@]} -eq 0 ]; then
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printf "${bold}[!]${reset} It appears there are no old PVE kernels on your system ⎦˚◡˚⎣\n"
|
|
printf "${bold}[-]${reset} Good bye!\n"
|
|
# Kernels found in removal list
|
|
else
|
|
num_to_remove=${#kernels_to_remove[@]}
|
|
# Check if force removal was passed
|
|
if [ $force_purge == true ]; then
|
|
REPLY="y"
|
|
# Ask the user if they want to remove the selected kernels found
|
|
else
|
|
printf "${bold}[!]${reset} Would you like to remove the ${bold}$num_to_remove${reset} selected PVE kernel$([ "$num_to_remove" -eq 1 ] || echo 's') listed above? [y/N]: "
|
|
read -n 1 -r
|
|
printf "\n"
|
|
fi
|
|
# User wishes to remove the kernels
|
|
if [[ $REPLY =~ ^[Yy]$ ]]; then
|
|
printf "${bold}[*]${reset} Removing $num_to_remove old PVE kernel$([ "$num_to_remove" -eq 1 ] || echo 's')...\n"
|
|
for kernel in "${kernels_to_remove[@]}"
|
|
do
|
|
printf "${bold}[-]${reset} Removing kernel: $kernel..."
|
|
# Purge the old kernels via apt and suppress output
|
|
if [ "$dry_run" != "true" ]; then
|
|
/usr/bin/apt purge -y pve-kernel-$kernel > /dev/null 2>&1
|
|
/usr/bin/apt purge -y proxmox-kernel-$kernel > /dev/null 2>&1
|
|
/usr/bin/apt purge -y pve-kernel-${kernel%-pve} > /dev/null 2>&1
|
|
/usr/bin/apt purge -y proxmox-kernel-${kernel%-pve} > /dev/null 2>&1
|
|
/usr/bin/apt purge -y pve-headers-${kernel%-pve} > /dev/null 2>&1
|
|
/usr/bin/apt purge -y proxmox-headers-${kernel%-pve} > /dev/null 2>&1
|
|
fi
|
|
sleep 1
|
|
printf "${bold}${green}DONE!${reset}\n"
|
|
done
|
|
printf "${bold}[*]${reset} Updating GRUB..."
|
|
# Update grub after kernels are removed, suppress output
|
|
if [ "$dry_run" != "true" ]; then
|
|
if command -v proxmox-boot-tool >/dev/null 2>&1; then
|
|
proxmox-boot-tool refresh > /dev/null 2>&1
|
|
else
|
|
update-grub > /dev/null 2>&1
|
|
fi
|
|
fi
|
|
printf "${bold}${green}DONE!${reset}\n"
|
|
# Get information about the /boot folder
|
|
boot_info=($(echo $(df -Ph | grep /boot | tail -1) | sed 's/%//g'))
|
|
# Show information about the /boot
|
|
printf "${bold}[-]${reset} ${bold}Boot Disk:${reset} ${boot_info[4]}%% full [${boot_info[2]}/${boot_info[1]} used, ${boot_info[3]} free] \n"
|
|
# Script finished successfully
|
|
printf "${bold}[-]${reset} Have a nice $(timeGreeting) ⎦˚◡˚⎣\n"
|
|
# User wishes to not remove the kernels above, exit
|
|
else
|
|
printf "\nExiting...\n"
|
|
printf "See you later ⎦˚◡˚⎣\n"
|
|
fi
|
|
fi
|
|
exit 0
|
|
}
|
|
|
|
# Function to check for updates
|
|
|
|
|
|
timeGreeting() {
|
|
h=$(date +%k) # Use %k to get the hour as a decimal number (no leading zero)
|
|
((h >= 5 && h < 12)) && echo "morning" && return
|
|
((h >= 12 && h < 17)) && echo "afternoon" && return
|
|
((h >= 17 && h < 21)) && echo "evening" && return
|
|
echo "night"
|
|
}
|
|
|
|
main() {
|
|
# Check for root
|
|
check_root
|
|
# Show header information
|
|
header_info
|
|
# Script usage
|
|
show_usage
|
|
# Show kernel information
|
|
kernel_info
|
|
get_drive_status_percent
|
|
# Check for updates
|
|
check_for_update
|
|
# Install program to /usr/local/sbin/
|
|
install_program
|
|
}
|
|
|
|
while [[ $# -gt 0 ]]; do
|
|
case "$1" in
|
|
-i|--install )
|
|
force_pvekclean_install=true
|
|
main
|
|
install_program
|
|
;;
|
|
-r|--remove )
|
|
main
|
|
uninstall_program
|
|
;;
|
|
-s|--scheduler)
|
|
main
|
|
scheduler
|
|
;;
|
|
-v|--version)
|
|
version
|
|
;;
|
|
-h|--help)
|
|
main
|
|
exit 0
|
|
;;
|
|
-k|--keep)
|
|
if [[ $# -gt 1 && "$2" =~ ^[0-9]+$ ]]; then
|
|
keep_kernels="$2"
|
|
shift 2
|
|
continue
|
|
else
|
|
echo -e "${bold}Error:${reset} --keep/-k requires a number argument."
|
|
exit 1
|
|
fi
|
|
;;
|
|
-f|--force)
|
|
force_purge=true
|
|
shift
|
|
continue
|
|
;;
|
|
-rn|--remove-newer)
|
|
remove_newer=true
|
|
shift
|
|
continue
|
|
;;
|
|
-d|--dry-run)
|
|
dry_run=true
|
|
shift
|
|
continue
|
|
;;
|
|
*)
|
|
echo -e "${bold}Unknown option:${reset} $1"
|
|
exit 1
|
|
;;
|
|
esac
|
|
shift
|
|
done
|
|
|
|
main
|
|
pve_kernel_clean |