Fixes support for read-only /lib on SystemD systems like CoreOS in kickstart static64 (#7726)

* Fix formatting of functions.sh and errors found by shellcheck

* Added support for other SystemD systems where /lib is read-only (e.g: CoreOS)

* Fix minor typo(s)/grammar with safe_256sum() function

* Fix shellcheck warnings in safe_256sum() function

* Update the md5sum of the kickstart-static64.sh script in our docs to match

3 files changed, 634 insertions, 632 deletions

diff --git a/packaging/installer/README.md b/packaging/installer/README.md
index 749641acf6..bdc2965637 100644
--- a/packaging/installer/README.md
+++ b/packaging/installer/README.md
@@ -116,7 +116,7 @@ This script installs Netdata at `/opt/netdata`.
 Verify the integrity of the script with this:
 
 ```bash
-[ "9e0901736a8ed5ebcc84bc1c2c7b5db9" = "$(curl -Ss https://my-netdata.io/kickstart-static64.sh | md5sum | cut -d ' ' -f 1)" ] && echo "OK, VALID" || echo "FAILED, INVALID"
+[ "986e7756219717b075675ebe9b812916" = "$(curl -Ss https://my-netdata.io/kickstart-static64.sh | md5sum | cut -d ' ' -f 1)" ] && echo "OK, VALID" || echo "FAILED, INVALID"
 ```
 
 *It should print `OK, VALID` if the script is the one we ship.*
diff --git a/packaging/installer/functions.sh b/packaging/installer/functions.sh
index d15494434f..b6830b1c7d 100644
--- a/packaging/installer/functions.sh
+++ b/packaging/installer/functions.sh
@@ -1,4 +1,5 @@
-# no shebang necessary - this is a library to be sourced
+#!/bin/bash
+
 # 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
 
@@ -8,97 +9,97 @@
 # -----------------------------------------------------------------------------
 
 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 command -v tput 1>/dev/null 2>&1; then
-		if [ $(($(tput colors 2>/dev/null))) -ge 8 ]; then
-			# Enable colors
-			TPUT_RESET="$(tput sgr 0)"
-			TPUT_BLACK="$(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
+    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 command -v tput 1>/dev/null 2>&1; then
+        if [ $(($(tput colors 2>/dev/null))) -ge 8 ]; then
+            # Enable colors
+            TPUT_RESET="$(tput sgr 0)"
+            TPUT_BLACK="$(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} --- "
+    echo >&2 " --- ${TPUT_DIM}${TPUT_BOLD}${*}${TPUT_RESET} --- "
 }
 
 # -----------------------------------------------------------------------------
 
 netdata_banner() {
-	local l1="  ^" \
-		l2="  |.-.   .-.   .-.   .-.   .-.   .-.   .-.   .-.   .-.   .-.   .-.   .-.   .-" \
-		l3="  |   '-'   '-'   '-'   '-'   '-'   '-'   '-'   '-'   '-'   '-'   '-'   '-'  " \
-		l4="  +----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+--->" \
-		sp="                                                                              " \
-		netdata="netdata" start end msg="${*}" chartcolor="${TPUT_DIM}"
+    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))}..."
+    [ ${#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 + ${#msg} + 4))
+    start="$((${#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
+    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
 }
 
 # -----------------------------------------------------------------------------
@@ -109,225 +110,225 @@ 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 $?
-	fi
-	return 1
+    local cmd="${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
 }
 
 # -----------------------------------------------------------------------------
 # portable pidof
 
 safe_pidof() {
-	local 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 $?
-	fi
+    local pidof_cmd="$(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
 }
 
 # -----------------------------------------------------------------------------
 find_processors() {
-	local cpus
-	if [ -f "/proc/cpuinfo" ]; then
-		# linux
-		cpus=$(grep -c ^processor /proc/cpuinfo)
-	else
-		# freebsd
-		cpus=$(sysctl hw.ncpu 2>/dev/null | grep ^hw.ncpu | cut -d ' ' -f 2)
-	fi
-	if [ -z "${cpus}" ] || [ $((cpus)) -lt 1 ]; then
-		echo 1
-	else
-		echo "${cpus}"
-	fi
+    local cpus
+    if [ -f "/proc/cpuinfo" ]; then
+        # linux
+        cpus=$(grep -c ^processor /proc/cpuinfo)
+    else
+        # freebsd
+        cpus=$(sysctl hw.ncpu 2>/dev/null | grep ^hw.ncpu | cut -d ' ' -f 2)
+    fi
+    if [ -z "${cpus}" ] || [ $((cpus)) -lt 1 ]; then
+        echo 1
+    else
+        echo "${cpus}"
+    fi
 }
 
 # -----------------------------------------------------------------------------
 fatal() {
-	printf >&2 "${TPUT_BGRED}${TPUT_WHITE}${TPUT_BOLD} ABORTED ${TPUT_RESET} ${*} \n\n"
-	exit 1
+    printf >&2 "${TPUT_BGRED}${TPUT_WHITE}${TPUT_BOLD} ABORTED ${TPUT_RESET} ${*} \n\n"
+    exit 1
 }
 
 run_ok() {
-	printf >&2 "${TPUT_BGGREEN}${TPUT_WHITE}${TPUT_BOLD} OK ${TPUT_RESET} ${*} \n\n"
+    printf >&2 "${TPUT_BGGREEN}${TPUT_WHITE}${TPUT_BOLD} OK ${TPUT_RESET} ${*} \n\n"
 }
 
 run_failed() {
-	printf >&2 "${TPUT_BGRED}${TPUT_WHITE}${TPUT_BOLD} FAILED ${TPUT_RESET} ${*} \n\n"
+    printf >&2 "${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
+    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
+    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 >>"${run_logfile}" " ... "
+    printf >>"${run_logfile}" "${info}"
+    escaped_print >>"${run_logfile}" "${@}"
+    printf >>"${run_logfile}" " ... "
 
-	printf >&2 "${info_console}${TPUT_BOLD}${TPUT_YELLOW}"
-	escaped_print >&2 "${@}"
-	printf >&2 "${TPUT_RESET}\n"
+    printf >&2 "${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
+    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}
+    return ${ret}
 }
 
 iscontainer() {
-	# man systemd-detect-virt
-	local cmd=$(command -v systemd-detect-virt 2>/dev/null)
-	if [ -n "${cmd}" ] && [ -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 [ -n "${pid}" ]; then
-		pid=$(( pid + 0 ))
-		[ ${pid} -gt 1 ] && return 0
-	fi
-
-	# lxc sets environment variable 'container'
-	[ -n "${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
+    # man systemd-detect-virt
+    local cmd=$(command -v systemd-detect-virt 2>/dev/null)
+    if [ -n "${cmd}" ] && [ -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 [ -n "${pid}" ]; then
+        pid=$((pid + 0))
+        [ ${pid} -gt 1 ] && return 0
+    fi
+
+    # lxc sets environment variable 'container'
+    [ -n "${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
+    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 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=$(command -v systemctl 2>/dev/null)
-	[ -z "${systemctl}" -o ! -x "${systemctl}" ] && return 1
+    # if there is no systemctl command, it is not systemd
+    # shellcheck disable=SC2230
+    systemctl=$(command -v systemctl 2>/dev/null)
+    [ -z "${systemctl}" -o ! -x "${systemctl}" ] && return 1
 
-	# if pid 1 is systemd, it is systemd
-	[ "$(basename $(readlink /proc/1/exe) 2>/dev/null)" = "systemd" ] && return 0
+    # if pid 1 is systemd, it is systemd
+    [ "$(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
+    # 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/${p}/ns/pid" 2>/dev/null)"
+    # check if the running systemd processes are not in our namespace
+    myns="$(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}" = "${ns}" ] && return 0
-	done
+        # if pid of systemd is in our namespace, it is systemd
+        [ -n "${myns}" ] && [ "${myns}" = "${ns}" ] && return 0
+    done
 
-	# else, it is not systemd
-	return 1
+    # 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 ] && [ ! -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}" =~ ^devuan* ]] || [ "${key}" = "debian-7" ] || [ "${key}" = "ubuntu-12.04" ] || [ "${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 '${key}'. Open a github issue to help us fix it."
-	fi
-
-	return 1
+    [ "${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 ] && [ ! -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 [[ ${key} =~ ^devuan* ]] || [ "${key}" = "debian-7" ] || [ "${key}" = "ubuntu-12.04" ] || [ "${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"
@@ -336,513 +337,514 @@ NETDATA_INSTALLER_START_CMD=""
 NETDATA_INSTALLER_STOP_CMD="${NETDATA_STOP_CMD}"
 
 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" &&
-									   NETDATA_INSTALLER_START_CMD="service netdata onestart" &&
-									   NETDATA_INSTALLER_STOP_CMD="${NETDATA_STOP_CMD}"
-			myret=$?
-
-			echo >&2 "Note: To explicitly enable netdata automatic start, set 'netdata_enable' to 'YES' in /etc/rc.conf"
-			echo >&2 ""
-
-			return ${myret}
-
-		elif issystemd; then
-			# systemd is running on this system
-			NETDATA_START_CMD="systemctl start netdata"
-			NETDATA_STOP_CMD="systemctl stop netdata"
-			NETDATA_INSTALLER_START_CMD="${NETDATA_START_CMD}"
-			NETDATA_INSTALLER_STOP_CMD="${NETDATA_STOP_CMD}"
-
-			SYSTEMD_DIRECTORY=""
-
-			if [ -d "/lib/systemd/system" ]; then
-				SYSTEMD_DIRECTORY="/lib/systemd/system"
-			elif [ -d "/usr/lib/systemd/system" ]; then
-				SYSTEMD_DIRECTORY="/usr/lib/systemd/system"
-			fi
-
-			if [ "${SYSTEMD_DIRECTORY}x" != "x" ]; then
-				ENABLE_NETDATA_IF_PREVIOUSLY_ENABLED="run systemctl enable netdata"
-				IS_NETDATA_ENABLED="$(systemctl is-enabled netdata 2> /dev/null || echo "Netdata not there")"
-				if [ "${IS_NETDATA_ENABLED}" == "disabled" ]; then
-					echo >&2 "Netdata was there and disabled, make sure we don't re-enable it ourselves"
-					ENABLE_NETDATA_IF_PREVIOUSLY_ENABLED="true"
-				fi
-
-				echo >&2 "Installing systemd service..."
-				run cp system/netdata.service "${SYSTEMD_DIRECTORY}/netdata.service" &&
-					run systemctl daemon-reload &&
-					${ENABLE_NETDATA_IF_PREVIOUSLY_ENABLED} &&
-					return 0
-			else
-				echo >&2 "no systemd directory; cannot install netdata.service"
-			fi
-		else
-			install_non_systemd_init
-			local ret=$?
-
-			if [ ${ret} -eq 0 ]; then
-				if [ -n "${service_cmd}" ]; then
-					NETDATA_START_CMD="service netdata start"
-					NETDATA_STOP_CMD="service netdata stop"
-				elif [ -n "${rcservice_cmd}" ]; then
-					NETDATA_START_CMD="rc-service netdata start"
-					NETDATA_STOP_CMD="rc-service netdata stop"
-				fi
-				NETDATA_INSTALLER_START_CMD="${NETDATA_START_CMD}"
-				NETDATA_INSTALLER_STOP_CMD="${NETDATA_STOP_CMD}"
-			fi
-
-			return ${ret}
-		fi
-	fi
-
-	return 1
+    local uname="$(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 [ "${uname}" = "FreeBSD" ]; then
+
+            run cp system/netdata-freebsd /etc/rc.d/netdata && NETDATA_START_CMD="service netdata start" &&
+                NETDATA_STOP_CMD="service netdata stop" &&
+                NETDATA_INSTALLER_START_CMD="service netdata onestart" &&
+                NETDATA_INSTALLER_STOP_CMD="${NETDATA_STOP_CMD}"
+            myret=$?
+
+            echo >&2 "Note: To explicitly enable netdata automatic start, set 'netdata_enable' to 'YES' in /etc/rc.conf"
+            echo >&2 ""
+
+            return ${myret}
+
+        elif issystemd; then
+            # systemd is running on this system
+            NETDATA_START_CMD="systemctl start netdata"
+            NETDATA_STOP_CMD="systemctl stop netdata"
+            NETDATA_INSTALLER_START_CMD="${NETDATA_START_CMD}"
+            NETDATA_INSTALLER_STOP_CMD="${NETDATA_STOP_CMD}"
+
+            SYSTEMD_DIRECTORY=""
+
+            if [ -w "/lib/systemd/system" ]; then
+                SYSTEMD_DIRECTORY="/lib/systemd/system"
+            elif [ -w "/usr/lib/systemd/system" ]; then
+                SYSTEMD_DIRECTORY="/usr/lib/systemd/system"
+            elif [ -w "/etc/systemd/system" ]; then
+                SYSTEM_DIRECTORY="/etc/systemd/system"
+            fi
+
+            if [ "${SYSTEMD_DIRECTORY}x" != "x" ]; then
+                ENABLE_NETDATA_IF_PREVIOUSLY_ENABLED="run systemctl enable netdata"
+                IS_NETDATA_ENABLED="$(systemctl is-enabled netdata 2>/dev/null || echo "Netdata not there")"
+                if [ "${IS_NETDATA_ENABLED}" == "disabled" ]; then
+                    echo >&2 "Netdata was there and disabled, make sure we don't re-enable it ourselves"
+                    ENABLE_NETDATA_IF_PREVIOUSLY_ENABLED="true"
+                fi
+
+                echo >&2 "Installing systemd service..."
+                run cp system/netdata.service "${SYSTEMD_DIRECTORY}/netdata.service" &&
+                    run systemctl daemon-reload &&
+                    ${ENABLE_NETDATA_IF_PREVIOUSLY_ENABLED} &&
+                    return 0
+            else
+                echo >&2 "no systemd directory; cannot install netdata.service"
+            fi
+        else
+            install_non_systemd_init
+            local ret=$?
+
+            if [ ${ret} -eq 0 ]; then
+                if [ -n "${service_cmd}" ]; then
+                    NETDATA_START_CMD="service netdata start"
+                    NETDATA_STOP_CMD="service netdata stop"
+                elif [ -n "${rcservice_cmd}" ]; then
+                    NETDATA_START_CMD="rc-service netdata start"
+                    NETDATA_STOP_CMD="rc-service netdata stop"
+                fi
+                NETDATA_INSTALLER_START_CMD="${NETDATA_START_CMD}"
+                NETDATA_INSTALLER_STOP_CMD="${NETDATA_STOP_CMD}"
+            fi
+
+            return ${ret}
+        fi
+    fi
+
+    return 1
 }
 
 # -----------------------------------------------------------------------------
 # stop netdata
 
 pidisnetdata() {
-	if [ -d /proc/self ]; then
-		[ -z "$1" -o ! -f "/proc/$1/stat" ] && return 1
-		[ "$(cut -d '(' -f 2 "/proc/$1/stat" | cut -d ')' -f 1)" = "netdata" ] && return 0
-		return 1
-	fi
-	return 0
+    if [ -d /proc/self ]; then
+        [ -z "$1" -o ! -f "/proc/$1/stat" ] && return 1
+        [ "$(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="${1}" ret=0 count=0
+    local pid="${1}" ret=0 count=0
 
-	pidisnetdata "${pid}" || return 0
+    pidisnetdata "${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 ${pid}."
-			return 1
-		fi
+    printf >&2 "Stopping netdata on pid %s ..." "${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=$((count + 1))
+        count=$((count + 1))
 
-		pidisnetdata "${pid}" || ret=1
-		if [ ${ret} -eq 1 ] ; then
-			break
-		fi
+        pidisnetdata "${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
+        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
+        test ${ret} -eq 0 && printf >&2 "." && sleep 5
 
-	done
+    done
 
-	echo >&2
-	if [ ${ret} -eq 0 ]; then
-		echo >&2 "SORRY! CANNOT STOP netdata ON PID ${pid} !"
-		return 1
-	fi
+    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
+    echo >&2 "netdata on pid ${pid} stopped."
+    return 0
 }
 
 netdata_pids() {
-	local p myns ns
+    local p myns ns
 
-	myns="$(readlink /proc/self/ns/pid 2>/dev/null)"
+    myns="$(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)"
+    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
+        if [ -z "${myns}" ] || [ -z "${ns}" ] || [ "${myns}" = "${ns}" ]; then
+            pidisnetdata "${p}" && echo "${p}"
+        fi
+    done
 }
 
 stop_all_netdata() {
-	local p
+    local p
 
-	if [ -n "$(netdata_pids)" -a -n "$(builtin type -P netdatacli)" ] ; then
-		netdatacli shutdown-agent
-		sleep 20
-	fi
+    if [ -n "$(netdata_pids)" -a -n "$(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
+    for p in $(netdata_pids); do
+        # shellcheck disable=SC2086
+        stop_netdata_on_pid ${p}
+    done
 }
 
 # -----------------------------------------------------------------------------
 # restart netdata
 
 restart_netdata() {
-	local netdata="${1}"
-	shift
+    local netdata="${1}"
+    shift
 
-	local started=0
+    local started=0
 
-	progress "Restarting netdata instance"
+    progress "Restarting netdata instance"
 
-	if [ -z "${NETDATA_INSTALLER_START_CMD}" ] ; then
-		NETDATA_INSTALLER_START_CMD="${netdata}"
-	fi
+    if [ -z "${NETDATA_INSTALLER_START_CMD}" ]; then
+        NETDATA_INSTALLER_START_CMD="${netdata}"
+    fi
 
-	if [ "${UID}" -eq 0 ]; then
-		echo >&2
-		echo >&2 "Stopping all netdata threads"
-		run stop_all_netdata
+    if [ "${UID}" -eq 0 ]; then
+        echo >&2
+        echo >&2 "Stopping all netdata threads"
+        run stop_all_netdata
 
-		echo >&2 "Starting netdata using command '${NETDATA_INSTALLER_START_CMD}'"
-		run ${NETDATA_INSTALLER_START_CMD} && started=1
+        echo >&2 "Starting netdata using command '${NETDATA_INSTALLER_START_CMD}'"
+        run ${NETDATA_INSTALLER_START_CMD} && started=1
 
-		if [ ${started} -eq 1 ] && [ -z "$(netdata_pids)" ]; then
-			echo >&2 "Ooops! it seems netdata is not started."
-			started=0
-		fi
+        if [ ${started} -eq 1 ] && [ -z "$(netdata_pids)" ]; then
+            echo >&2 "Ooops! it seems netdata is not started."
+            started=0
+        fi
 
-		if [ ${started} -eq 0 ]; then
-			echo >&2 "Attempting another netdata start using command '${NETDATA_INSTALLER_START_CMD}'"
-			run ${NETDATA_INSTALLER_START_CMD} && started=1
-		fi
-	fi
+        if [ ${started} -eq 0 ]; then
+            echo >&2 "Attempting another netdata start using command '${NETDATA_INSTALLER_START_CMD}'"
+            run ${NETDATA_INSTALLER_START_CMD} && started=1
+        fi
+    fi