#!/usr/bin/env bash # # This is the netdata uninstaller script # # Variables needed by script and taken from '.environment' file: # - NETDATA_PREFIX # - NETDATA_ADDED_TO_GROUPS # # Copyright: SPDX-License-Identifier: GPL-3.0-or-later # # Author: Paweł Krupa <paulfantom@gmail.com> # Author: Pavlos Emm. Katsoulakis <paul@netdata.cloud> usage="$(basename "$0") [-h] [-f ] -- program to calculate the answer to life, the universe and everything where: -e, --env path to environment file (defauls to '/etc/netdata/.environment' -f, --force force uninstallation and do not ask any questions -h show this help text -y, --yes flag needs to be set to proceed with uninstallation" FILE_REMOVAL_STATUS=0 ENVIRONMENT_FILE="/etc/netdata/.environment" INTERACTIVITY="-i" YES=0 while :; do case "$1" in -h | --help) echo "$usage" >&2 exit 1 ;; -f | --force) INTERACTIVITY="-f" shift ;; -y | --yes) YES=1 shift ;; -e | --env) ENVIRONMENT_FILE="$2" shift 2 ;; -*) echo "$usage" >&2 exit 1 ;; *) break ;; esac done if [ "$YES" != "1" ]; then echo >&2 "This script will REMOVE netdata from your system." echo >&2 "Run it again with --yes to do it." exit 1 fi if [[ $EUID -ne 0 ]]; then echo >&2 "This script SHOULD be run as root or otherwise it won't delete all installed components." key="n" read -r -s -n 1 -p "Do you want to continue as non-root user [y/n] ? " key if [ "$key" != "y" ] && [ "$key" != "Y" ]; then exit 1 fi fi # ----------------------------------------------------------------------------- # portable service command service_cmd="$(command -v service 2> /dev/null)" rcservice_cmd="$(command -v rc-service 2> /dev/null)" systemctl_cmd="$(command -v systemctl 2> /dev/null)" service() { local cmd="${1}" action="${2}" if [ -n "${systemctl_cmd}" ]; then run "${systemctl_cmd}" "${action}" "${cmd}" return $? elif [ -n "${service_cmd}" ]; then run "${service_cmd}" "${cmd}" "${action}" return $? elif [ -n "${rcservice_cmd}" ]; then run "${rcservice_cmd}" "${cmd}" "${action}" return $? fi return 1 } # ----------------------------------------------------------------------------- setup_terminal() { TPUT_RESET="" TPUT_YELLOW="" TPUT_WHITE="" TPUT_BGRED="" TPUT_BGGREEN="" TPUT_BOLD="" TPUT_DIM="" # Is stderr on the terminal? If not, then fail test -t 2 || return 1 if command -v tput 1> /dev/null 2>&1; then if [ $(($(tput colors 2> /dev/null))) -ge 8 ]; then # Enable colors TPUT_RESET="$(tput sgr 0)" TPUT_YELLOW="$(tput setaf 3)" TPUT_WHITE="$(tput setaf 7)" TPUT_BGRED="$(tput setab 1)" TPUT_BGGREEN="$(tput setab 2)" TPUT_BOLD="$(tput bold)" TPUT_DIM="$(tput dim)" fi fi return 0 } setup_terminal || echo > /dev/null run_ok() { printf >&2 "%s OK %s\n\n" "${TPUT_BGGREEN}${TPUT_WHITE}${TPUT_BOLD}" "${TPUT_RESET}" } run_failed() { printf >&2 "%s FAILED %s\n\n" "${TPUT_BGRED}${TPUT_WHITE}${TPUT_BOLD}" "${TPUT_RESET}" } ESCAPED_PRINT_METHOD= if printf "%q " test > /dev/null 2>&1; then ESCAPED_PRINT_METHOD="printfq" fi escaped_print() { if [ "${ESCAPED_PRINT_METHOD}" = "printfq" ]; then printf "%q " "${@}" else printf "%s" "${*}" fi return 0 } run_logfile="/dev/null" run() { local user="${USER--}" dir="${PWD}" info info_console if [ "${UID}" = "0" ]; then info="[root ${dir}]# " info_console="[${TPUT_DIM}${dir}${TPUT_RESET}]# " else info="[${user} ${dir}]$ " info_console="[${TPUT_DIM}${dir}${TPUT_RESET}]$ " fi { printf "%s" "${info}" escaped_print "${@}" printf "%s" " ... " } >> "${run_logfile}" printf "%s" "${info_console}${TPUT_BOLD}${TPUT_YELLOW}" >&2 escaped_print >&2 "${@}" printf "%s\n" "${TPUT_RESET}" >&2 "${@}" local ret=$? if [ ${ret} -ne 0 ]; then run_failed printf >> "${run_logfile}" "FAILED with exit code %s\n" "${ret}" else run_ok printf >> "${run_logfile}" "OK\n" fi return ${ret} } portable_del_group() { local groupname="${1}" # Check if group exist echo >&2 "Removing ${groupname} user group ..." # Linux if command -v groupdel 1> /dev/null 2>&1; then if grep -q "${groupname}" /etc/group; then run groupdel "${groupname}" && return 0 else echo >&2 "Group ${groupname} already removed in a previous step." return 0 fi fi # mac OS if command -v dseditgroup 1> /dev/null 2>&1; then if dseditgroup -o read netdata 1> /dev/null 2>&1; then run dseditgroup -o delete "${groupname}" && return 0 else echo >&2 "Could not find group ${groupname}, nothing to do" return 0 fi fi echo >&2 "Group ${groupname} was not automatically removed, you might have to remove it manually" return 1 } issystemd() { local pids p myns ns systemctl # if the directory /lib/systemd/system OR /usr/lib/systemd/system (SLES 12.x) does not exit, it is not systemd if [ ! -d /lib/systemd/system ] && [ ! -d /usr/lib/systemd/system ]; then return 1 fi # if there is no systemctl command, it is not systemd systemctl=$(command -v systemctl 2> /dev/null) if [ -z "${systemctl}" ] || [ ! -x "${systemctl}" ]; then return 1 fi # if pid 1 is systemd, it is systemd [ "$(basename "$(readlink /proc/1/exe)" 2> /dev/null)" = "systemd" ] && return 0 # if systemd is not running, it is not systemd pids=$(safe_pidof systemd 2> /dev/null) [ -z "${pids}" ] && return 1 # check if the running systemd processes are not in our namespace myns="$(readlink /proc/self/ns/pid 2> /dev/null)" for p in ${pids}; do ns="$(readlink "/proc/${p}/ns/pid" 2> /dev/null)" # if pid of systemd is in our namespace, it is systemd [ -n "${myns}" ] && [ "${myns}" = "${ns}" ] && return 0 done # else, it is not systemd return 1 } portable_del_user() { local username="${1}" echo >&2 "Deleting ${username} user account ..." # Linux if command -v userdel 1> /dev/null 2>&1; then run userdel -f "${username}" && return 0 fi # mac OS if command -v sysadminctl 1> /dev/null 2>&1; then run sysadminctl -deleteUser "${username}" && return 0 fi echo >&2 "User ${username} could not be deleted from system, you might have to remove it manually" return 1 } portable_del_user_from_group() { local groupname="${1}" username="${2}" # username is not in group echo >&2 "Deleting ${username} user from ${groupname} group ..." # Linux if command -v gpasswd 1> /dev/null 2>&1; then run gpasswd -d "netdata" "${group}" && return 0 fi # FreeBSD if command -v pw 1> /dev/null 2>&1; then run pw groupmod "${groupname}" -d "${username}" && return 0 fi # BusyBox if command -v delgroup 1> /dev/null 2>&1; then run delgroup "${username}" "${groupname}" && return 0 fi # mac OS if command -v dseditgroup 1> /dev/null 2>&1; then run dseditgroup -o delete -u "${username}" "${groupname}" && return 0 fi echo >&2 "Failed to delete user ${username} from group ${groupname} !" return 1 } quit_msg() { echo if [ "$FILE_REMOVAL_STATUS" -eq 0 ]; then echo >&2 "Something went wrong :(" else echo >&2 "Netdata files were successfully removed from your system" fi } user_input() { TEXT="$1" if [ "${INTERACTIVITY}" = "-i" ]; then read -r -p "$TEXT" >&2 fi } rm_file() { FILE="$1" if [ -f "${FILE}" ]; then run rm -v ${INTERACTIVITY} "${FILE}" fi } rm_dir() { DIR="$1" if [ -n "$DIR" ] && [ -d "$DIR" ]; then user_input "Press ENTER to recursively delete directory '$DIR' > " run rm -v -f -R "${DIR}" fi } safe_pidof() { local pidof_cmd pidof_cmd="$(command -v pidof 2> /dev/null)" if [ -n "${pidof_cmd}" ]; then ${pidof_cmd} "${@}" return $? else ps -acxo pid,comm | sed "s/^ *//g" | grep netdata | cut -d ' ' -f 1 return $? fi } pidisnetdata() { if [ -d /proc/self ]; then if [ -z "$1" ] || [ ! -f "/proc/$1/stat" ]; then return 1 fi [ "$(cut -d '(' -f 2 "/proc/$1/stat" | cut -d ')' -f 1)" = "netdata" ] && return 0 return 1 fi return 0 } stop_netdata_on_pid() { local pid="${1}" ret=0 count=0 pidisnetdata "${pid}" || return 0 printf >&2 "Stopping netdata on pid %s ..." "${pid}" while [ -n "$pid" ] && [ ${ret} -eq 0 ]; do if [ ${count} -gt 24 ]; then echo >&2 "Cannot stop the running netdata on pid ${pid}." return 1 fi count=$((count + 1)) pidisnetdata "${pid}" || ret=1 if [ ${ret} -eq 1 ]; then break fi if [ ${count} -lt 12 ]; then run kill "${pid}" 2> /dev/null ret=$? else run kill -9 "${pid}" 2> /dev/null ret=$? fi test ${ret} -eq 0 && printf >&2 "." && sleep 5 done echo >&2 if [ ${ret} -eq 0 ]; then echo >&2 "SORRY! CANNOT STOP netdata ON PID ${pid} !" return 1 fi echo >&2 "netdata on pid ${pid} stopped." return 0 } netdata_pids() { local p myns ns myns="$(readlink /proc/self/ns/pid 2> /dev/null)" for p in \ $(cat /var/run/netdata.pid 2> /dev/null) \ $(cat /var/run/netdata/netdata.pid 2> /dev/null) \ $(safe_pidof netdata 2> /dev/null); do ns="$(readlink "/proc/${p}/ns/pid" 2> /dev/null)" if [ -z "${myns}" ] || [ -z "${ns}" ] || [ "${myns}" = "${ns}" ]; then pidisnetdata "${p}" && echo "${p}" fi done } stop_all_netdata() { local p if [ "${UID}" -eq 0 ]; then uname="$(uname 2> /dev/null)" # Any of these may fail, but we need to not bail if they do. if issystemd; then if systemctl stop netdata; then sleep 5 fi elif [ "${uname}" = "Darwin" ]; then if launchctl stop netdata; then sleep 5 fi elif [ "${uname}" = "FreeBSD" ]; then if /etc/rc.d/netdata stop; then sleep 5 fi else if service netdata stop; then sleep 5 fi fi fi if [ -n "$(netdata_pids)" ] && [ -n "$(builtin type -P netdatacli)" ]; then netdatacli shutdown-agent sleep 20 fi for p in $(netdata_pids); do # shellcheck disable=SC2086 stop_netdata_on_pid ${p} done } trap quit_msg EXIT #shellcheck source=/dev/null source "${ENVIRONMENT_FILE}" || exit 1 #### STOP NETDATA echo >&2 "Stopping a possibly running netdata..." stop_all_netdata #### REMOVE NETDATA FILES rm_file /etc/logrotate.d/netdata rm_file /etc/systemd/system/netdata.service rm_file /lib/systemd/system/netdata.service rm_file /usr/lib/systemd/system/netdata.service rm_file /etc/systemd/system/netdata-updater.service rm_file /lib/systemd/system/netdata-updater.service rm_file /usr/lib/systemd/system/netdata-updater.service rm_file /etc/systemd/system/netdata-updater.timer rm_file /lib/systemd/system/netdata-updater.timer rm_file /usr/lib/systemd/system/netdata-updater.timer rm_file /etc/init.d/netdata rm_file /etc/periodic/daily/netdata-updater rm_file /etc/cron.daily/netdata-updater rm_file /etc/cron.d/netdata-updater if [ -n "${NETDATA_PREFIX}" ] && [ -d "${NETDATA_PREFIX}" ]; then rm_dir "${NETDATA_PREFIX}" else rm_file "/usr/sbin/netdata" rm_file "/usr/sbin/netdatacli" rm_file "/tmp/netdata-ipc" rm_file "/usr/sbin/netdata-claim.sh" rm_dir "/usr/share/netdata" rm_dir "/usr/libexec/netdata" rm_dir "/var/lib/netdata" rm_dir "/var/cache/netdata" rm_dir "/var/log/netdata" rm_dir "/etc/netdata" fi FILE_REMOVAL_STATUS=1 #### REMOVE NETDATA USER FROM ADDED GROUPS if [ -n "$NETDATA_ADDED_TO_GROUPS" ]; then user_input "Press ENTER to delete 'netdata' from following groups: '$NETDATA_ADDED_TO_GROUPS' > " for group in $NETDATA_ADDED_TO_GROUPS; do portable_del_user_from_group "${group}" "netdata" done fi #### REMOVE USER user_input "Press ENTER to delete 'netdata' system user > " portable_del_user "netdata" || : ### REMOVE GROUP user_input "Press ENTER to delete 'netdata' system group > " portable_del_group "netdata" || :