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|
#!/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 ${groupname} already removed in a previous step."
run_ok
fi
fi
# mac OS
if command -v dseditgroup 1> /dev/null 2>&1; then
if dseditgroup -o read netdata 1> /dev/null 2>&1; then
run dseditgroup -o delete "${groupname}" && return 0
else
echo >&2 "Could not find group ${groupname}, nothing to do"
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"
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