Adding upstream version 1.12.0.upstream/1.12.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 797 insertions, 0 deletions

diff --git a/packaging/installer/functions.sh b/packaging/installer/functions.sh
new file mode 100644
index 0000000..a2d7365
--- /dev/null
+++ b/packaging/installer/functions.sh
@@ -0,0 +1,797 @@
+# no shebang necessary - this is a library to be sourced
+# SPDX-License-Identifier: GPL-3.0-or-later
+# shellcheck disable=SC1091,SC1117,SC2002,SC2004,SC2034,SC2046,SC2059,SC2086,SC2129,SC2148,SC2154,SC2155,SC2162,SC2166,SC2181,SC2193
+
+# make sure we have a UID
+[ -z "${UID}" ] && UID="$(id -u)"
+
+# -----------------------------------------------------------------------------
+# checking the availability of commands
+
+which_cmd() {
+	# shellcheck disable=SC2230
+	which "${1}" 2>/dev/null || command -v "${1}" 2>/dev/null
+}
+
+check_cmd() {
+	which_cmd "${1}" >/dev/null 2>&1 && return 0
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+
+setup_terminal() {
+	TPUT_RESET=""
+	TPUT_BLACK=""
+	TPUT_RED=""
+	TPUT_GREEN=""
+	TPUT_YELLOW=""
+	TPUT_BLUE=""
+	TPUT_PURPLE=""
+	TPUT_CYAN=""
+	TPUT_WHITE=""
+	TPUT_BGBLACK=""
+	TPUT_BGRED=""
+	TPUT_BGGREEN=""
+	TPUT_BGYELLOW=""
+	TPUT_BGBLUE=""
+	TPUT_BGPURPLE=""
+	TPUT_BGCYAN=""
+	TPUT_BGWHITE=""
+	TPUT_BOLD=""
+	TPUT_DIM=""
+	TPUT_UNDERLINED=""
+	TPUT_BLINK=""
+	TPUT_INVERTED=""
+	TPUT_STANDOUT=""
+	TPUT_BELL=""
+	TPUT_CLEAR=""
+
+	# Is stderr on the terminal? If not, then fail
+	test -t 2 || return 1
+
+	if check_cmd tput; then
+		if [ $(($(tput colors 2>/dev/null))) -ge 8 ]; then
+			# Enable colors
+			TPUT_RESET="$(tput sgr 0)"
+			TPUT_BLACK="$(tput setaf 0)"
+			TPUT_RED="$(tput setaf 1)"
+			TPUT_GREEN="$(tput setaf 2)"
+			TPUT_YELLOW="$(tput setaf 3)"
+			TPUT_BLUE="$(tput setaf 4)"
+			TPUT_PURPLE="$(tput setaf 5)"
+			TPUT_CYAN="$(tput setaf 6)"
+			TPUT_WHITE="$(tput setaf 7)"
+			TPUT_BGBLACK="$(tput setab 0)"
+			TPUT_BGRED="$(tput setab 1)"
+			TPUT_BGGREEN="$(tput setab 2)"
+			TPUT_BGYELLOW="$(tput setab 3)"
+			TPUT_BGBLUE="$(tput setab 4)"
+			TPUT_BGPURPLE="$(tput setab 5)"
+			TPUT_BGCYAN="$(tput setab 6)"
+			TPUT_BGWHITE="$(tput setab 7)"
+			TPUT_BOLD="$(tput bold)"
+			TPUT_DIM="$(tput dim)"
+			TPUT_UNDERLINED="$(tput smul)"
+			TPUT_BLINK="$(tput blink)"
+			TPUT_INVERTED="$(tput rev)"
+			TPUT_STANDOUT="$(tput smso)"
+			TPUT_BELL="$(tput bel)"
+			TPUT_CLEAR="$(tput clear)"
+		fi
+	fi
+
+	return 0
+}
+setup_terminal || echo >/dev/null
+
+progress() {
+	echo >&2 " --- ${TPUT_DIM}${TPUT_BOLD}${*}${TPUT_RESET} --- "
+}
+
+# -----------------------------------------------------------------------------
+
+netdata_banner() {
+	local l1="  ^" \
+		l2="  |.-.   .-.   .-.   .-.   .-.   .-.   .-.   .-.   .-.   .-.   .-.   .-.   .-" \
+		l3="  |   '-'   '-'   '-'   '-'   '-'   '-'   '-'   '-'   '-'   '-'   '-'   '-'  " \
+		l4="  +----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+--->" \
+		sp="                                                                              " \
+		netdata="netdata" start end msg="${*}" chartcolor="${TPUT_DIM}"
+
+	[ ${#msg} -lt ${#netdata} ] && msg="${msg}${sp:0:$((${#netdata} - ${#msg}))}"
+	[ ${#msg} -gt $((${#l2} - 20)) ] && msg="${msg:0:$((${#l2} - 23))}..."
+
+	start="$((${#l2} / 2 - 4))"
+	[ $((start + ${#msg} + 4)) -gt ${#l2} ] && start=$((${#l2} - ${#msg} - 4))
+	end=$((start + ${#msg} + 4))
+
+	echo >&2
+	echo >&2 "${chartcolor}${l1}${TPUT_RESET}"
+	echo >&2 "${chartcolor}${l2:0:start}${sp:0:2}${TPUT_RESET}${TPUT_BOLD}${TPUT_GREEN}${netdata}${TPUT_RESET}${chartcolor}${sp:0:$((end - start - 2 - ${#netdata}))}${l2:end:$((${#l2} - end))}${TPUT_RESET}"
+	echo >&2 "${chartcolor}${l3:0:start}${sp:0:2}${TPUT_RESET}${TPUT_BOLD}${TPUT_CYAN}${msg}${TPUT_RESET}${chartcolor}${sp:0:2}${l3:end:$((${#l2} - end))}${TPUT_RESET}"
+	echo >&2 "${chartcolor}${l4}${TPUT_RESET}"
+	echo >&2
+}
+
+# -----------------------------------------------------------------------------
+# portable service command
+
+service_cmd="$(which_cmd service)"
+rcservice_cmd="$(which_cmd rc-service)"
+systemctl_cmd="$(which_cmd systemctl)"
+service() {
+	local cmd="${1}" action="${2}"
+
+	if [ ! -z "${systemctl_cmd}" ]; then
+		run "${systemctl_cmd}" "${action}" "${cmd}"
+		return $?
+	elif [ ! -z "${service_cmd}" ]; then
+		run "${service_cmd}" "${cmd}" "${action}"
+		return $?
+	elif [ ! -z "${rcservice_cmd}" ]; then
+		run "${rcservice_cmd}" "${cmd}" "${action}"
+		return $?
+	fi
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# portable pidof
+
+pidof_cmd="$(which_cmd pidof)"
+pidof() {
+	if [ ! -z "${pidof_cmd}" ]; then
+		${pidof_cmd} "${@}"
+		return $?
+	else
+		ps -acxo pid,comm |
+			sed "s/^ *//g" |
+			grep netdata |
+			cut -d ' ' -f 1
+		return $?
+	fi
+}
+
+# -----------------------------------------------------------------------------
+# portable delete recursively interactively
+
+portable_deletedir_recursively_interactively() {
+	if [ ! -z "$1" -a -d "$1" ]; then
+		if [ "$(uname -s)" = "Darwin" ]; then
+			echo >&2
+			read >&2 -p "Press ENTER to recursively delete directory '$1' > "
+			echo >&2 "Deleting directory '$1' ..."
+			run rm -R "$1"
+		else
+			echo >&2
+			echo >&2 "Deleting directory '$1' ..."
+			run rm -I -R "$1"
+		fi
+	else
+		echo "Directory '$1' does not exist."
+	fi
+}
+
+# -----------------------------------------------------------------------------
+
+export SYSTEM_CPUS=1
+portable_find_processors() {
+	if [ -f "/proc/cpuinfo" ]; then
+		# linux
+		SYSTEM_CPUS=$(grep -c ^processor /proc/cpuinfo)
+	else
+		# freebsd
+		SYSTEM_CPUS=$(sysctl hw.ncpu 2>/dev/null | grep ^hw.ncpu | cut -d ' ' -f 2)
+	fi
+	[ -z "${SYSTEM_CPUS}" -o $((SYSTEM_CPUS)) -lt 1 ] && SYSTEM_CPUS=1
+}
+portable_find_processors
+
+# -----------------------------------------------------------------------------
+
+run_ok() {
+	printf >&2 "${TPUT_BGGREEN}${TPUT_WHITE}${TPUT_BOLD} OK ${TPUT_RESET} ${*} \n\n"
+}
+
+run_failed() {
+	printf >&2 "${TPUT_BGRED}${TPUT_WHITE}${TPUT_BOLD} FAILED ${TPUT_RESET} ${*} \n\n"
+}
+
+ESCAPED_PRINT_METHOD=
+printf "%q " test >/dev/null 2>&1
+[ $? -eq 0 ] && ESCAPED_PRINT_METHOD="printfq"
+escaped_print() {
+	if [ "${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 >>"${run_logfile}" "${info}"
+	escaped_print >>"${run_logfile}" "${@}"
+	printf >>"${run_logfile}" " ... "
+
+	printf >&2 "${info_console}${TPUT_BOLD}${TPUT_YELLOW}"
+	escaped_print >&2 "${@}"
+	printf >&2 "${TPUT_RESET}\n"
+
+	"${@}"
+
+	local ret=$?
+	if [ ${ret} -ne 0 ]; then
+		run_failed
+		printf >>"${run_logfile}" "FAILED with exit code ${ret}\n"
+	else
+		run_ok
+		printf >>"${run_logfile}" "OK\n"
+	fi
+
+	return ${ret}
+}
+
+getent_cmd="$(which_cmd getent)"
+portable_check_user_exists() {
+	local username="${1}" found=
+
+	if [ ! -z "${getent_cmd}" ]; then
+		"${getent_cmd}" passwd "${username}" >/dev/null 2>&1
+		return $?
+	fi
+
+	found="$(cut -d ':' -f 1 </etc/passwd | grep "^${username}$")"
+	[ "${found}" = "${username}" ] && return 0
+	return 1
+}
+
+portable_check_group_exists() {
+	local groupname="${1}" found=
+
+	if [ ! -z "${getent_cmd}" ]; then
+		"${getent_cmd}" group "${groupname}" >/dev/null 2>&1
+		return $?
+	fi
+
+	found="$(cut -d ':' -f 1 </etc/group | grep "^${groupname}$")"
+	[ "${found}" = "${groupname}" ] && return 0
+	return 1
+}
+
+portable_check_user_in_group() {
+	local username="${1}" groupname="${2}" users=
+
+	if [ ! -z "${getent_cmd}" ]; then
+		users="$(getent group "${groupname}" | cut -d ':' -f 4)"
+	else
+		users="$(grep "^${groupname}:" </etc/group | cut -d ':' -f 4)"
+	fi
+
+	[[ ",${users}," =~ ,${username}, ]] && return 0
+	return 1
+}
+
+portable_add_user() {
+	local username="${1}" homedir="${2}"
+
+	[ -z "${homedir}" ] && homedir="/tmp"
+
+	portable_check_user_exists "${username}"
+	[ $? -eq 0 ] && echo >&2 "User '${username}' already exists." && return 0
+
+	echo >&2 "Adding ${username} user account with home ${homedir} ..."
+
+	# shellcheck disable=SC2230
+	local nologin="$(which nologin 2>/dev/null || command -v nologin 2>/dev/null || echo '/bin/false')"
+
+	# Linux
+	if check_cmd useradd; then
+		run useradd -r -g "${username}" -c "${username}" -s "${nologin}" --no-create-home -d "${homedir}" "${username}" && return 0
+	fi
+
+	# FreeBSD
+	if check_cmd pw; then
+		run pw useradd "${username}" -d "${homedir}" -g "${username}" -s "${nologin}" && return 0
+	fi
+
+	# BusyBox
+	if check_cmd adduser; then
+		run adduser -h "${homedir}" -s "${nologin}" -D -G "${username}" "${username}" && return 0
+	fi
+
+	echo >&2 "Failed to add ${username} user account !"
+
+	return 1
+}
+
+portable_add_group() {
+	local groupname="${1}"
+
+	portable_check_group_exists "${groupname}"
+	[ $? -eq 0 ] && echo >&2 "Group '${groupname}' already exists." && return 0
+
+	echo >&2 "Adding ${groupname} user group ..."
+
+	# Linux
+	if check_cmd groupadd; then
+		run groupadd -r "${groupname}" && return 0
+	fi
+
+	# FreeBSD
+	if check_cmd pw; then
+		run pw groupadd "${groupname}" && return 0
+	fi
+
+	# BusyBox
+	if check_cmd addgroup; then
+		run addgroup "${groupname}" && return 0
+	fi
+
+	echo >&2 "Failed to add ${groupname} user group !"
+	return 1
+}
+
+portable_add_user_to_group() {
+	local groupname="${1}" username="${2}"
+
+	portable_check_group_exists "${groupname}"
+	[ $? -ne 0 ] && echo >&2 "Group '${groupname}' does not exist." && return 1
+
+	# find the user is already in the group
+	if portable_check_user_in_group "${username}" "${groupname}"; then
+		# username is already there
+		echo >&2 "User '${username}' is already in group '${groupname}'."
+		return 0
+	else
+		# username is not in group
+		echo >&2 "Adding ${username} user to the ${groupname} group ..."
+
+		# Linux
+		if check_cmd usermod; then
+			run usermod -a -G "${groupname}" "${username}" && return 0
+		fi
+
+		# FreeBSD
+		if check_cmd pw; then
+			run pw groupmod "${groupname}" -m "${username}" && return 0
+		fi
+
+		# BusyBox
+		if check_cmd addgroup; then
+			run addgroup "${username}" "${groupname}" && return 0
+		fi
+
+		echo >&2 "Failed to add user ${username} to group ${groupname} !"
+		return 1
+	fi
+}
+
+iscontainer() {
+	# man systemd-detect-virt
+	local cmd=$(which_cmd systemd-detect-virt)
+	if [ ! -z "${cmd}" -a -x "${cmd}" ]; then
+		"${cmd}" --container >/dev/null 2>&1 && return 0
+	fi
+
+	# /proc/1/sched exposes the host's pid of our init !
+	# http://stackoverflow.com/a/37016302
+	local pid=$(cat /proc/1/sched 2>/dev/null | head -n 1 | {
+		IFS='(),#:' read name pid th threads
+		echo $pid
+	})
+	if [ ! -z "${pid}" ]; then
+		pid=$(( pid + 0 ))
+		[ ${pid} -gt 1 ] && return 0
+	fi
+
+	# lxc sets environment variable 'container'
+	[ ! -z "${container}" ] && return 0
+
+	# docker creates /.dockerenv
+	# http://stackoverflow.com/a/25518345
+	[ -f "/.dockerenv" ] && return 0
+
+	# ubuntu and debian supply /bin/running-in-container
+	# https://www.apt-browse.org/browse/ubuntu/trusty/main/i386/upstart/1.12.1-0ubuntu4/file/bin/running-in-container
+	if [ -x "/bin/running-in-container" ]; then
+		"/bin/running-in-container" >/dev/null 2>&1 && return 0
+	fi
+
+	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
+	[ ! -d /lib/systemd/system -a ! -d /usr/lib/systemd/system ] && return 1
+
+	# if there is no systemctl command, it is not systemd
+	# shellcheck disable=SC2230
+	systemctl=$(which systemctl 2>/dev/null || command -v systemctl 2>/dev/null)
+	[ -z "${systemctl}" -o ! -x "${systemctl}" ] && return 1
+
+	# if pid 1 is systemd, it is systemd
+	[ "$(basename $(readlink /proc/1/exe) 2>/dev/null)" = "systemd" ] && return 0
+
+	# if systemd is not running, it is not systemd
+	pids=$(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/${p}/ns/pid 2>/dev/null)"
+
+		# if pid of systemd is in our namespace, it is systemd
+		[ ! -z "${myns}" ] && [ "${myns}" = "${ns}" ] && return 0
+	done
+
+	# else, it is not systemd
+	return 1
+}
+
+install_non_systemd_init() {
+	[ "${UID}" != 0 ] && return 1
+
+	local key="unknown"
+	if [ -f /etc/os-release ]; then
+		source /etc/os-release || return 1
+		key="${ID}-${VERSION_ID}"
+
+	elif [ -f /etc/redhat-release ]; then
+		key=$(</etc/redhat-release)
+	fi
+
+	if [ -d /etc/init.d -a ! -f /etc/init.d/netdata ]; then
+		if [[ ${key} =~ ^(gentoo|alpine).* ]]; then
+			echo >&2 "Installing OpenRC init file..."
+			run cp system/netdata-openrc /etc/init.d/netdata &&
+				run chmod 755 /etc/init.d/netdata &&
+				run rc-update add netdata default &&
+				return 0
+
+		elif [ "${key}" = "debian-7" \
+			-o "${key}" = "ubuntu-12.04" \
+			-o "${key}" = "ubuntu-14.04" \
+			]; then
+			echo >&2 "Installing LSB init file..."
+			run cp system/netdata-lsb /etc/init.d/netdata &&
+				run chmod 755 /etc/init.d/netdata &&
+				run update-rc.d netdata defaults &&
+				run update-rc.d netdata enable &&
+				return 0
+		elif [[ ${key} =~ ^(amzn-201[5678]|ol|CentOS release 6|Red Hat Enterprise Linux Server release 6|Scientific Linux CERN SLC release 6|CloudLinux Server release 6).* ]]; then
+			echo >&2 "Installing init.d file..."
+			run cp system/netdata-init-d /etc/init.d/netdata &&
+				run chmod 755 /etc/init.d/netdata &&
+				run chkconfig netdata on &&
+				return 0
+		else
+			echo >&2 "I don't know what init file to install on system '${key}'. Open a github issue to help us fix it."
+			return 1
+		fi
+	elif [ -f /etc/init.d/netdata ]; then
+		echo >&2 "file '/etc/init.d/netdata' already exists."
+		return 0
+	else
+		echo >&2 "I don't know what init file to install on system '${key}'. Open a github issue to help us fix it."
+	fi
+
+	return 1
+}
+
+NETDATA_START_CMD="netdata"
+NETDATA_STOP_CMD="killall netdata"
+
+install_netdata_service() {
+	local uname="$(uname 2>/dev/null)"
+
+	if [ "${UID}" -eq 0 ]; then
+		if [ "${uname}" = "Darwin" ]; then
+
+			if [ -f "/Library/LaunchDaemons/com.github.netdata.plist" ]; then
+				echo >&2 "file '/Library/LaunchDaemons/com.github.netdata.plist' already exists."
+				return 0
+			else
+				echo >&2 "Installing MacOS X plist file..."
+				run cp system/netdata.plist /Library/LaunchDaemons/com.github.netdata.plist &&
+					run launchctl load /Library/LaunchDaemons/com.github.netdata.plist &&
+					return 0
+			fi
+
+		elif [ "${uname}" = "FreeBSD" ]; then
+
+			run cp system/netdata-freebsd /etc/rc.d/netdata &&
+				NETDATA_START_CMD="service netdata start" &&
+				NETDATA_STOP_CMD="service netdata stop" &&
+				return 0
+
+		elif issystemd; then
+			# systemd is running on this system
+			NETDATA_START_CMD="systemctl start netdata"
+			NETDATA_STOP_CMD="systemctl stop netdata"
+
+			SYSTEMD_DIRECTORY=""
+
+			if [ -d "/lib/systemd/system" ]; then
+				SYSTEMD_DIRECTORY="/lib/systemd/system"
+			elif [ -d "/usr/lib/systemd/system" ]; then
+				SYSTEMD_DIRECTORY="/usr/lib/systemd/system"
+			fi
+
+			if [ "${SYSTEMD_DIRECTORY}x" != "x" ]; then
+				echo >&2 "Installing systemd service..."
+				run cp system/netdata.service "${SYSTEMD_DIRECTORY}/netdata.service" &&
+					run systemctl daemon-reload &&
+					run systemctl enable netdata &&
+					return 0
+			else
+				echo >&2 "no systemd directory; cannot install netdata.service"
+			fi
+		else
+			install_non_systemd_init
+			local ret=$?
+
+			if [ ${ret} -eq 0 ]; then
+				if [ ! -z "${service_cmd}" ]; then
+					NETDATA_START_CMD="service netdata start"
+					NETDATA_STOP_CMD="service netdata stop"
+				elif [ ! -z "${rcservice_cmd}" ]; then
+					NETDATA_START_CMD="rc-service netdata start"
+					NETDATA_STOP_CMD="rc-service netdata stop"
+				fi
+			fi
+
+			return ${ret}
+		fi
+	fi
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# stop netdata
+
+pidisnetdata() {
+	if [ -d /proc/self ]; then
+		[ -z "$1" -o ! -f "/proc/$1/stat" ] && return 1
+		[ "$(cat "/proc/$1/stat" | cut -d '(' -f 2 | cut -d ')' -f 1)" = "netdata" ] && return 0
+		return 1
+	fi
+	return 0
+}
+
+stop_netdata_on_pid() {
+	local pid="${1}" ret=0 count=0
+
+	pidisnetdata ${pid} || return 0
+
+	printf >&2 "Stopping netdata on pid ${pid} ..."
+	while [ ! -z "$pid" -a ${ret} -eq 0 ]; do
+		if [ ${count} -gt 45 ]; then
+			echo >&2 "Cannot stop the running netdata on pid ${pid}."
+			return 1
+		fi
+
+		count=$((count + 1))
+
+		run kill ${pid} 2>/dev/null
+		ret=$?
+
+		test ${ret} -eq 0 && printf >&2 "." && sleep 2
+	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)"
+
+	# echo >&2 "Stopping a (possibly) running netdata (namespace '${myns}')..."
+
+	for p in \
+		$(cat /var/run/netdata.pid 2>/dev/null) \
+		$(cat /var/run/netdata/netdata.pid 2>/dev/null) \
+		$(pidof netdata 2>/dev/null); do
+		ns="$(readlink /proc/${p}/ns/pid 2>/dev/null)"
+
+		if [ -z "${myns}" -o -z "${ns}" -o "${myns}" = "${ns}" ]; then
+			pidisnetdata ${p} && echo "${p}"
+		fi
+	done
+}
+
+stop_all_netdata() {
+	local p
+	for p in $(netdata_pids); do
+		stop_netdata_on_pid ${p}
+	done
+}
+
+# -----------------------------------------------------------------------------
+# restart netdata
+
+restart_netdata() {
+	local netdata="${1}"
+	shift
+
+	local started=0
+
+	progress "Start netdata"
+
+	if [ "${UID}" -eq 0 ]; then
+		service netdata stop
+		stop_all_netdata
+		service netdata restart && started=1
+
+		if [ ${started} -eq 1 -a -z "$(netdata_pids)" ]; then
+			echo >&2 "Ooops! it seems netdata is not started."
+			started=0
+		fi
+
+		if [ ${started} -eq 0 ]; then
+			service netdata start && started=1
+		fi
+	fi
+
+	if [ ${started} -eq 1 -a -z "$(netdata_pids)" ]; then
+		echo >&2 "Hm... it seems netdata is still not started."
+		started=0
+	fi
+
+	if [ ${started} -eq 0 ]; then
+		# still not started...
+
+		run stop_all_netdata
+		run "${netdata}" "${@}"
+		return $?
+	fi
+
+	return 0
+}
+
+# -----------------------------------------------------------------------------
+# install netdata logrotate
+
+install_netdata_logrotate() {
+	if [ ${UID} -eq 0 ]; then
+		if [ -d /etc/logrotate.d ]; then
+			if [ ! -f /etc/logrotate.d/netdata ]; then
+				run cp system/netdata.logrotate /etc/logrotate.d/netdata
+			fi
+
+			if [ -f /etc/logrotate.d/netdata ]; then
+				run chmod 644 /etc/logrotate.d/netdata
+			fi
+
+			return 0
+		fi
+	fi
+
+	return 1
+}
+
+# -----------------------------------------------------------------------------
+# download netdata.conf
+
+fix_netdata_conf() {
+	local owner="${1}"
+
+	if [ "${UID}" -eq 0 ]; then
+		run chown "${owner}" "${filename}"
+	fi
+	run chmod 0664 "${filename}"
+}
+
+generate_netdata_conf() {
+	local owner="${1}" filename="${2}" url="${3}"
+
+	if [ ! -s "${filename}" ]; then
+		cat >"${filename}" <<EOFCONF
+# netdata can generate its own config.
+# Get it with:
+#
+# wget -O ${filename} "${url}"
+#
+# or
+#
+# curl -s -o ${filename} "${url}"
+#
+EOFCONF
+		fix_netdata_conf "${owner}"
+	fi
+}
+
+download_netdata_conf() {
+	local owner="${1}" filename="${2}" url="${3}"
+
+	if [ ! -s "${filename}" ]; then
+		echo >&2
+		echo >&2 "-------------------------------------------------------------------------------"
+		echo >&2
+		echo >&2 "Downloading default configuration from netdata..."
+		sleep 5
+
+		# remove a possibly obsolete download
+		[ -f "${filename}.new" ] && rm "${filename}.new"
+
+		# disable a proxy to get data from the local netdata
+		export http_proxy=
+		export https_proxy=
+
+		# try curl
+		run curl -s -o "${filename}.new" "${url}"
+		ret=$?
+
+		if [ ${ret} -ne 0 -o ! -s "${filename}.new" ]; then
+			# try wget
+			run wget -O "${filename}.new" "${url}"
+			ret=$?
+		fi
+
+		if [ ${ret} -eq 0 -a -s "${filename}.new" ]; then
+			run mv "${filename}.new" "${filename}"
+			run_ok "New configuration saved for you to edit at ${filename}"
+		else
+			[ -f "${filename}.new" ] && rm "${filename}.new"
+			run_failed "Cannnot download configuration from netdata daemon using url '${url}'"
+
+			generate_netdata_conf "${owner}" "${filename}" "${url}"
+		fi
+
+		fix_netdata_conf "${owner}"
+	fi
+}
+
+# -----------------------------------------------------------------------------
+# add netdata user and group
+
+NETDATA_WANTED_GROUPS="docker nginx varnish haproxy adm nsd proxy squid ceph nobody"
+NETDATA_ADDED_TO_GROUPS=""
+add_netdata_user_and_group() {
+	local homedir="${1}" g
+
+	if [ ${UID} -eq 0 ]; then
+		portable_add_group netdata || return 1
+		portable_add_user netdata "${homedir}" || return 1
+
+		for g in ${NETDATA_WANTED_GROUPS}; do
+			portable_add_user_to_group ${g} netdata && NETDATA_ADDED_TO_GROUPS="${NETDATA_ADDED_TO_GROUPS} ${g}"
+		done
+
+		[ ~netdata = / ] && cat <<USERMOD
+
+The netdata user has its home directory set to /
+You may want to change it, using this command:
+
+# usermod -d "${homedir}" netdata
+
+USERMOD
+		return 0
+	fi
+
+	return 1
+}