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