Merging upstream version 1.12.2.

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

5 files changed, 328 insertions, 109 deletions

diff --git a/packaging/installer/README.md b/packaging/installer/README.md
index 14b16bd4..d30ed3ec 100644
--- a/packaging/installer/README.md
+++ b/packaging/installer/README.md
@@ -41,7 +41,7 @@ bash <(curl -Ss https://my-netdata.io/kickstart.sh)
 Verify the integrity of the script with this:
 
 ```bash
-[ "7d16639b6ee14b0a33a8b90c979d3513" = "$(curl -Ss https://my-netdata.io/kickstart.sh | md5sum | cut -d ' ' -f 1)" ] && echo "OK, VALID" || echo "FAILED, INVALID"
+[ "b66c99c065abe1cf104c11236d4e8747" = "$(curl -Ss https://my-netdata.io/kickstart.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.*
 
@@ -95,7 +95,7 @@ To install Netdata with a binary package on any Linux distro, any kernel version
 Verify the integrity of the script with this:
 
 ```bash
-[ "61ed714ebe0edf03e90cb5cef59fa991" = "$(curl -Ss https://my-netdata.io/kickstart-static64.sh | md5sum | cut -d ' ' -f 1)" ] && echo "OK, VALID" || echo "FAILED, INVALID"
+[ "8e6df9b6f6cc7de0d73f6e5e51a3c8c2" = "$(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/kickstart-static64.sh b/packaging/installer/kickstart-static64.sh
index 3a6b2653..f6d0fc69 100755
--- a/packaging/installer/kickstart-static64.sh
+++ b/packaging/installer/kickstart-static64.sh
@@ -2,10 +2,6 @@
 # SPDX-License-Identifier: GPL-3.0-or-later
 # shellcheck disable=SC1117,SC2039,SC2059,SC2086
 
-# External files
-NIGHTLY_PACKAGE_TARBALL="https://storage.googleapis.com/netdata-nightlies/netdata-latest.gz.run"
-NIGHTLY_PACKAGE_CHECKSUM="https://storage.googleapis.com/netdata-nightlies/sha256sums.txt"
-
 # ---------------------------------------------------------------------------------------------------------------------
 # library functions copied from packaging/installer/functions.sh
 
@@ -73,18 +69,27 @@ run() {
 	return ${ret}
 }
 
-# ---------------------------------------------------------------------------------------------------------------------
-
 fatal() {
 	printf >&2 "${TPUT_BGRED}${TPUT_WHITE}${TPUT_BOLD} ABORTED ${TPUT_RESET} ${*} \n\n"
 	exit 1
 }
 
+create_tmp_directory() {
+	# Check if tmp is mounted as noexec
+	if grep -Eq '^[^ ]+ /tmp [^ ]+ ([^ ]*,)?noexec[, ]' /proc/mounts; then
+		pattern="$(pwd)/netdata-kickstart-XXXXXX"
+	else
+		pattern="/tmp/netdata-kickstart-XXXXXX"
+	fi
+
+	mktemp -d $pattern
+}
+
 download() {
 	url="${1}"
 	dest="${2}"
 	if command -v curl >/dev/null 2>&1; then
-		run curl -L --connect-timeout 5 --retry 3 "${url}" >"${dest}" || fatal "Cannot download ${url}"
+		run curl -sSL --connect-timeout 10 --retry 3 "${url}" >"${dest}" || fatal "Cannot download ${url}"
 	elif command -v wget >/dev/null 2>&1; then
 		run wget -T 15 -O - "${url}" >"${dest}" || fatal "Cannot download ${url}"
 	else
@@ -92,6 +97,21 @@ download() {
 	fi
 }
 
+set_tarball_urls() {
+	if [ "$1" == "stable" ]; then
+		local latest
+		# Simple version
+		# latest="$(curl -sSL https://api.github.com/repos/netdata/netdata/releases/latest | grep tag_name | cut -d'"' -f4)"
+		latest="$(download "https://api.github.com/repos/netdata/netdata/releases/latest" /dev/stdout | grep tag_name | cut -d'"' -f4)"
+		export NETDATA_TARBALL_URL="https://github.com/netdata/netdata/releases/download/$latest/netdata-$latest.gz.run"
+		export NETDATA_TARBALL_CHECKSUM_URL="https://github.com/netdata/netdata/releases/download/$latest/sha256sums.txt"
+	else
+		export NETDATA_TARBALL_URL="https://storage.googleapis.com/netdata-nightlies/netdata-latest.gz.run"
+		export NETDATA_TARBALL_CHECKSUM_URL="https://storage.googleapis.com/netdata-nightlies/sha256sums.txt"
+	fi
+}
+
+# ---------------------------------------------------------------------------------------------------------------------
 umask 022
 
 sudo=""
@@ -101,7 +121,6 @@ sudo=""
 setup_terminal || echo >/dev/null
 
 # ---------------------------------------------------------------------------------------------------------------------
-
 if [ "$(uname -m)" != "x86_64" ]; then
 	fatal "Static binary versions of netdata are available only for 64bit Intel/AMD CPUs (x86_64), but yours is: $(uname -m)."
 fi
@@ -111,51 +130,45 @@ if [ "$(uname -s)" != "Linux" ]; then
 fi
 
 # ---------------------------------------------------------------------------------------------------------------------
-
-# Check if tmp is mounted as noexec
-if grep -Eq '^[^ ]+ /tmp [^ ]+ ([^ ]*,)?noexec[, ]' /proc/mounts; then
-	pattern="$(pwd)/netdata-kickstart-static-XXXXXX"
-else
-	pattern="/tmp/netdata-kickstart-static-XXXXXX"
-fi
-
-tmpdir="$(mktemp -d $pattern)"
-cd "${tmpdir}" || :
-
-progress "Downloading static netdata binary: ${NIGHTLY_PACKAGE_TARBALL}"
-
-download "${NIGHTLY_PACKAGE_CHECKSUM}" "${tmpdir}/sha256sum.txt"
-download "${NIGHTLY_PACKAGE_TARBALL}" "${tmpdir}/netdata-latest.gz.run"
-if ! grep netdata-latest.gz.run sha256sum.txt | sha256sum --check - >/dev/null 2>&1; then
-	failed "Static binary checksum validation failed. Stopping netdata installation and leaving binary in ${tmpdir}"
-fi
-
-# ---------------------------------------------------------------------------------------------------------------------
-
 opts=
 inner_opts=
-while [ ! -z "${1}" ]; do
+RELEASE_CHANNEL="nightly"
+while [ -n "${1}" ]; do
 	if [ "${1}" = "--dont-wait" ] || [ "${1}" = "--non-interactive" ] || [ "${1}" = "--accept" ]; then
 		opts="${opts} --accept"
 	elif [ "${1}" = "--dont-start-it" ]; then
 		inner_opts="${inner_opts} ${1}"
+	elif [ "${1}" = "--stable-channel" ]; then
+		RELEASE_CHANNEL="stable"
 	else
 		echo >&2 "Unknown option '${1}'"
 		exit 1
 	fi
 	shift
 done
-[ ! -z "${inner_opts}" ] && inner_opts="-- ${inner_opts}"
+[ -n "${inner_opts}" ] && inner_opts="-- ${inner_opts}"
 
 # ---------------------------------------------------------------------------------------------------------------------
+TMPDIR=$(create_tmp_directory)
+cd "${TMPDIR}" || :
+
+set_tarball_urls "${RELEASE_CHANNEL}"
+progress "Downloading static netdata binary: ${NETDATA_TARBALL_URL}"
 
+download "${NETDATA_TARBALL_CHECKSUM_URL}" "${TMPDIR}/sha256sum.txt"
+download "${NETDATA_TARBALL_URL}" "${TMPDIR}/netdata-latest.gz.run"
+if ! grep netdata-latest.gz.run "${TMPDIR}/sha256sum.txt" | sha256sum --check - >/dev/null 2>&1; then
+	fatal "Static binary checksum validation failed. Stopping netdata installation and leaving binary in ${TMPDIR}"
+fi
+
+# ---------------------------------------------------------------------------------------------------------------------
 progress "Installing netdata"
 
-run ${sudo} sh "${tmpdir}/netdata-latest.gz.run" ${opts} ${inner_opts}
+run ${sudo} sh "${TMPDIR}/netdata-latest.gz.run" ${opts} ${inner_opts}
 
 #shellcheck disable=SC2181
 if [ $? -eq 0 ]; then
-	rm "${tmpdir}/netdata-latest.gz.run"
+	rm "${TMPDIR}/netdata-latest.gz.run"
 else
-	echo >&2 "NOTE: did not remove: ${tmpdir}/netdata-latest.gz.run"
+	echo >&2 "NOTE: did not remove: ${TMPDIR}/netdata-latest.gz.run"
 fi
diff --git a/packaging/installer/kickstart.sh b/packaging/installer/kickstart.sh
index 9a5e848b..196b7589 100755
--- a/packaging/installer/kickstart.sh
+++ b/packaging/installer/kickstart.sh
@@ -27,8 +27,6 @@
 
 # External files
 PACKAGES_SCRIPT="https://raw.githubusercontent.com/netdata/netdata-demo-site/master/install-required-packages.sh"
-NIGHTLY_PACKAGE_TARBALL="https://storage.googleapis.com/netdata-nightlies/netdata-latest.tar.gz"
-NIGHTLY_PACKAGE_CHECKSUM="https://storage.googleapis.com/netdata-nightlies/sha256sums.txt"
 
 # ---------------------------------------------------------------------------------------------------------------------
 # library functions copied from packaging/installer/functions.sh
@@ -97,6 +95,11 @@ run() {
 	return ${ret}
 }
 
+fatal() {
+	printf >&2 "${TPUT_BGRED}${TPUT_WHITE}${TPUT_BOLD} ABORTED ${TPUT_RESET} ${*} \n\n"
+	exit 1
+}
+
 warning() {
 	printf >&2 "${TPUT_BGRED}${TPUT_WHITE}${TPUT_BOLD} WARNING ${TPUT_RESET} ${*} \n\n"
 	if [ "${INTERACTIVE}" = "0" ]; then
@@ -107,16 +110,22 @@ warning() {
 	fi
 }
 
-fatal() {
-	printf >&2 "${TPUT_BGRED}${TPUT_WHITE}${TPUT_BOLD} ABORTED ${TPUT_RESET} ${*} \n\n"
-	exit 1
+create_tmp_directory() {
+	# Check if tmp is mounted as noexec
+	if grep -Eq '^[^ ]+ /tmp [^ ]+ ([^ ]*,)?noexec[, ]' /proc/mounts; then
+		pattern="$(pwd)/netdata-kickstart-XXXXXX"
+	else
+		pattern="/tmp/netdata-kickstart-XXXXXX"
+	fi
+
+	mktemp -d $pattern
 }
 
 download() {
 	url="${1}"
 	dest="${2}"
 	if command -v curl >/dev/null 2>&1; then
-		run curl -L --connect-timeout 5 --retry 3 "${url}" >"${dest}" || fatal "Cannot download ${url}"
+		run curl -sSL --connect-timeout 10 --retry 3 "${url}" >"${dest}" || fatal "Cannot download ${url}"
 	elif command -v wget >/dev/null 2>&1; then
 		run wget -T 15 -O - "${url}" >"${dest}" || fatal "Cannot download ${url}"
 	else
@@ -124,6 +133,20 @@ download() {
 	fi
 }
 
+set_tarball_urls() {
+	if [ "$1" == "stable" ]; then
+		local latest
+		# Simple version
+		# latest="$(curl -sSL https://api.github.com/repos/netdata/netdata/releases/latest | grep tag_name | cut -d'"' -f4)"
+		latest="$(download "https://api.github.com/repos/netdata/netdata/releases/latest" /dev/stdout | grep tag_name | cut -d'"' -f4)"
+		export NETDATA_TARBALL_URL="https://github.com/netdata/netdata/releases/download/$latest/netdata-$latest.tar.gz"
+		export NETDATA_TARBALL_CHECKSUM_URL="https://github.com/netdata/netdata/releases/download/$latest/sha256sums.txt"
+	else
+		export NETDATA_TARBALL_URL="https://storage.googleapis.com/netdata-nightlies/netdata-latest.tar.gz"
+		export NETDATA_TARBALL_CHECKSUM_URL="https://storage.googleapis.com/netdata-nightlies/sha256sums.txt"
+	fi
+}
+
 detect_bash4() {
 	bash="${1}"
 	if [ -z "${BASH_VERSION}" ]; then
@@ -147,6 +170,40 @@ detect_bash4() {
 	return 0
 }
 
+dependencies() {
+	SYSTEM="$(uname -s)"
+	OS="$(uname -o)"
+	MACHINE="$(uname -m)"
+
+	echo "System            : ${SYSTEM}"
+	echo "Operating System  : ${OS}"
+	echo "Machine           : ${MACHINE}"
+	echo "BASH major version: ${BASH_MAJOR_VERSION}"
+
+	if [ "${OS}" != "GNU/Linux" ] && [ "${SYSTEM}" != "Linux" ]; then
+		warning "Cannot detect the packages to be installed on a ${SYSTEM} - ${OS} system."
+	else
+		bash="$(command -v bash 2>/dev/null)"
+		if ! detect_bash4 "${bash}"; then
+			warning "Cannot detect packages to be installed in this system, without BASH v4+."
+		else
+			progress "Downloading script to detect required packages..."
+			download "${PACKAGES_SCRIPT}" "${TMPDIR}/install-required-packages.sh"
+			if [ ! -s "${TMPDIR}/install-required-packages.sh" ]; then
+				warning "Downloaded dependency installation script is empty."
+			else
+				progress "Running downloaded script to detect required packages..."
+				run ${sudo} "${bash}" "${TMPDIR}/install-required-packages.sh" ${PACKAGES_INSTALLER_OPTIONS}
+				# shellcheck disable=SC2181
+				if [ $? -ne 0 ] ; then
+					warning "It failed to install all the required packages, but installation might still be possible."
+				fi
+			fi
+
+		fi
+	fi
+}
+
 umask 022
 
 sudo=""
@@ -181,6 +238,7 @@ INTERACTIVE=1
 PACKAGES_INSTALLER_OPTIONS="netdata"
 NETDATA_INSTALLER_OPTIONS=""
 NETDATA_UPDATES="--auto-update"
+RELEASE_CHANNEL="nightly"
 while [ -n "${1}" ]; do
 	if [ "${1}" = "all" ]; then
 		PACKAGES_INSTALLER_OPTIONS="netdata-all"
@@ -192,6 +250,9 @@ while [ -n "${1}" ]; do
 		# echo >&2 "netdata will not auto-update"
 		NETDATA_UPDATES=
 		shift 1
+	elif [ "${1}" = "--stable-channel" ]; then
+		RELEASE_CHANNEL="stable"
+		shift 1
 	else
 		break
 	fi
@@ -202,59 +263,20 @@ if [ "${INTERACTIVE}" = "0" ]; then
 	NETDATA_INSTALLER_OPTIONS="--dont-wait"
 fi
 
-# ---------------------------------------------------------------------------------------------------------------------
-# detect system parameters and install dependencies
-
-SYSTEM="$(uname -s)"
-OS="$(uname -o)"
-MACHINE="$(uname -m)"
-
-cat <<EOF
-System            : ${SYSTEM}
-Operating System  : ${OS}
-Machine           : ${MACHINE}
-BASH major version: ${BASH_MAJOR_VERSION}
-EOF
-
-# Check if tmp is mounted as noexec
-if grep -Eq '^[^ ]+ /tmp [^ ]+ ([^ ]*,)?noexec[, ]' /proc/mounts; then
-	pattern="$(pwd)/netdata-kickstart-XXXXXX"
-else
-	pattern="/tmp/netdata-kickstart-XXXXXX"
-fi
+TMPDIR=$(create_tmp_directory)
+cd ${TMPDIR} || :
 
-tmpdir="$(mktemp -d $pattern)"
-cd "${tmpdir}" || :
-
-if [ "${OS}" != "GNU/Linux" ] && [ "${SYSTEM}" != "Linux" ]; then
-	warning "Cannot detect the packages to be installed on a ${SYSTEM} - ${OS} system."
-else
-	bash="$(command -v bash 2>/dev/null)"
-	if ! detect_bash4 "${bash}"; then
-		warning "Cannot detect packages to be installed in this system, without BASH v4+."
-	else
-		progress "Downloading script to detect required packages..."
-		download "${PACKAGES_SCRIPT}" "${tmpdir}/install-required-packages.sh"
-		if [ ! -s "${tmpdir}/install-required-packages.sh" ]; then
-			warning "Downloaded dependency installation script is empty."
-		else
-			progress "Running downloaded script to detect required packages..."
-			run ${sudo} "${bash}" "${tmpdir}/install-required-packages.sh" ${PACKAGES_INSTALLER_OPTIONS}
-			if [ $? -ne 0 ] ; then
-				warning "It failed to install all the required packages, but installation might still be possible."
-			fi
-		fi
-
-	fi
-fi
+dependencies
 
 # ---------------------------------------------------------------------------------------------------------------------
-# download netdata nightly package
+# download netdata package
+
+set_tarball_urls "${RELEASE_CHANNEL}"
 
-download "${NIGHTLY_PACKAGE_CHECKSUM}" "${tmpdir}/sha256sum.txt"
-download "${NIGHTLY_PACKAGE_TARBALL}" "${tmpdir}/netdata-latest.tar.gz"
-if ! grep netdata-latest.tar.gz sha256sum.txt | sha256sum --check - >/dev/null 2>&1; then
-	failed "Tarball checksum validation failed. Stopping netdata installation and leaving tarball in ${tmpdir}"
+download "${NETDATA_TARBALL_CHECKSUM_URL}" "${TMPDIR}/sha256sum.txt"
+download "${NETDATA_TARBALL_URL}" "${TMPDIR}/netdata-latest.tar.gz"
+if ! grep netdata-latest.tar.gz "${TMPDIR}/sha256sum.txt" | sha256sum --check - >/dev/null 2>&1; then
+	fatal "Tarball checksum validation failed. Stopping netdata installation and leaving tarball in ${TMPDIR}"
 fi
 run tar -xf netdata-latest.tar.gz
 rm -rf netdata-latest.tar.gz >/dev/null 2>&1
@@ -266,7 +288,7 @@ cd netdata-* || fatal "Cannot cd to netdata source tree"
 if [ -x netdata-installer.sh ]; then
 	progress "Installing netdata..."
 	run ${sudo} ./netdata-installer.sh ${NETDATA_UPDATES} ${NETDATA_INSTALLER_OPTIONS} "${@}" || fatal "netdata-installer.sh exited with error"
-	rm -rf "${tmpdir}" >/dev/null 2>&1
+	rm -rf "${TMPDIR}" >/dev/null 2>&1
 else
-	fatal "Cannot install netdata from source (the source directory does not include netdata-installer.sh). Leaving all files in ${tmpdir}"
+	fatal "Cannot install netdata from source (the source directory does not include netdata-installer.sh). Leaving all files in ${TMPDIR}"
 fi
diff --git a/packaging/installer/netdata-uninstaller.sh b/packaging/installer/netdata-uninstaller.sh
new file mode 100755
index 00000000..96dd6290
--- /dev/null
+++ b/packaging/installer/netdata-uninstaller.sh
@@ -0,0 +1,169 @@
+#!/usr/bin/env bash
+#shellcheck disable=SC2181
+
+# this script will uninstall netdata
+
+# Variables needed by script and taken from '.environment' file:
+#  - NETDATA_PREFIX
+#  - NETDATA_ADDED_TO_GROUPS
+
+usage="$(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 "This script will REMOVE netdata from your system."
+	echo "Run it again with --yes to do it."
+	exit 1
+fi
+
+if [[ $EUID -ne 0 ]]; then
+	echo "This script SHOULD be run as root or otherwise it won't delete all installed components."
+	key="n"
+	read -r -s -n 1 -p "Do you want to continue as non-root user [y/n] ? " key
+	if [ "$key" != "y" ] && [ "$key" != "Y" ]; then
+		exit 1
+	fi
+fi
+
+function quit_msg() {
+	echo
+	if [ "$FILE_REMOVAL_STATUS" -eq 0 ]; then
+		echo "Something went wrong :("
+	else
+		echo "Netdata files were successfully removed from your system"
+	fi
+}
+
+function user_input() {
+	TEXT="$1"
+	if [ "${INTERACTIVITY}" == "-i" ]; then
+		read -r -p "$TEXT" >&2
+	fi
+}
+
+function rm_file() {
+	FILE="$1"
+	if [ -f "${FILE}" ]; then
+		rm -v ${INTERACTIVITY} "${FILE}"
+	fi
+}
+
+function rm_dir() {
+	DIR="$1"
+	if [ -n "$DIR" ] && [ -d "$DIR" ]; then
+		user_input "Press ENTER to recursively delete directory '$DIR' > "
+		rm -v -f -R "${DIR}"
+	fi
+}
+
+netdata_pids() {
+	local p myns ns
+	myns="$(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) \
+		$(pidof netdata 2>/dev/null); do
+
+		ns="$(readlink "/proc/${p}/ns/pid" 2>/dev/null)"
+		#shellcheck disable=SC2002
+		if [ -z "${myns}" ] || [ -z "${ns}" ] || [ "${myns}" = "${ns}" ]; then
+			name="$(cat "/proc/${p}/stat" 2>/dev/null | cut -d '(' -f 2 | cut -d ')' -f 1)"
+			if [ "${name}" = "netdata" ]; then
+				echo "${p}"
+			fi
+		fi
+	done
+}
+
+trap quit_msg EXIT
+
+#shellcheck source=/dev/null
+source "${ENVIRONMENT_FILE}" || exit 1
+
+#### STOP NETDATA
+echo "Stopping a possibly running netdata..."
+for p in $(netdata_pids); do
+	i=0
+	while kill "${p}" 2>/dev/null; do
+		if [ "$i" -gt 30 ]; then
+			echo "Forcefully stopping netdata with pid ${p}"
+			kill -9 "${p}"
+			sleep 2
+			break
+		fi
+		sleep 1
+		i=$((i + 1))
+	done
+done
+sleep 2
+
+#### REMOVE NETDATA FILES
+rm_file /etc/logrotate.d/netdata
+rm_file /etc/systemd/system/netdata.service
+rm_file /lib/systemd/system/netdata.service
+rm_file /usr/lib/systemd/system/netdata.service
+rm_file /etc/init.d/netdata
+rm_file /etc/periodic/daily/netdata-updater
+rm_file /etc/cron.daily/netdata-updater
+
+if [ -n "${NETDATA_PREFIX}" ] && [ -d "${NETDATA_PREFIX}" ]; then
+	rm_dir "${NETDATA_PREFIX}"
+else
+	rm_file "/usr/sbin/netdata"
+	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 & GROUP
+if [ -n "$NETDATA_ADDED_TO_GROUPS" ]; then
+	user_input "Press ENTER to delete 'netdata' from following groups: '$NETDATA_ADDED_TO_GROUPS' > "
+	for group in $NETDATA_ADDED_TO_GROUPS; do
+		gpasswd -d netdata "${group}"
+	done
+fi
+
+user_input "Press ENTER to delete 'netdata' system user > "
+userdel -f netdata || :
+user_input "Press ENTER to delete 'netdata' system group > "
+groupdel -f netdata || :
diff --git a/packaging/installer/netdata-updater.sh b/packaging/installer/netdata-updater.sh
index 7846ce8b..2dce5efc 100644
--- a/packaging/installer/netdata-updater.sh
+++ b/packaging/installer/netdata-updater.sh
@@ -21,7 +21,7 @@ error() {
 }
 
 # this is what we will do if it fails (head-less only)
-failed() {
+fatal() {
 	error "FAILED TO UPDATE NETDATA : ${1}"
 
 	if [ -n "${logfile}" ]; then
@@ -31,30 +31,47 @@ failed() {
 	exit 1
 }
 
+create_tmp_directory() {
+	# Check if tmp is mounted as noexec
+	if grep -Eq '^[^ ]+ /tmp [^ ]+ ([^ ]*,)?noexec[, ]' /proc/mounts; then
+		pattern="$(pwd)/netdata-updater-XXXXXX"
+	else
+		pattern="/tmp/netdata-updater-XXXXXX"
+	fi
+
+	mktemp -d "$pattern"
+}
+
 download() {
 	url="${1}"
 	dest="${2}"
 	if command -v curl >/dev/null 2>&1; then
-		curl -L --connect-timeout 5 --retry 3 "${url}" >"${dest}" || fatal "Cannot download ${url}"
+		curl -sSL --connect-timeout 10 --retry 3 "${url}" >"${dest}" || fatal "Cannot download ${url}"
 	elif command -v wget >/dev/null 2>&1; then
 		wget -T 15 -O - "${url}" >"${dest}" || fatal "Cannot download ${url}"
 	else
-		failed "I need curl or wget to proceed, but neither is available on this system."
+		fatal "I need curl or wget to proceed, but neither is available on this system."
 	fi
 }
 
-update() {
-	[ -z "${logfile}" ] && info "Running on a terminal - (this script also supports running headless from crontab)"
-
-	# Check if tmp is mounted as noexec
-	if grep -Eq '^[^ ]+ /tmp [^ ]+ ([^ ]*,)?noexec[, ]' /proc/mounts; then
-		pattern="$(pwd)/netdata-updater-XXXXXX"
+set_tarball_urls() {
+	if [ "$1" == "stable" ]; then
+		local latest
+		# Simple version
+		# latest="$(curl -sSL https://api.github.com/repos/netdata/netdata/releases/latest | grep tag_name | cut -d'"' -f4)"
+		latest="$(download "https://api.github.com/repos/netdata/netdata/releases/latest" /dev/stdout | grep tag_name | cut -d'"' -f4)"
+		export NETDATA_TARBALL_URL="https://github.com/netdata/netdata/releases/download/$latest/netdata-$latest.tar.gz"
+		export NETDATA_TARBALL_CHECKSUM_URL="https://github.com/netdata/netdata/releases/download/$latest/sha256sums.txt"
 	else
-		pattern="/tmp/netdata-updater-XXXXXX"
+		export NETDATA_TARBALL_URL="https://storage.googleapis.com/netdata-nightlies/netdata-latest.tar.gz"
+		export NETDATA_TARBALL_CHECKSUM_URL="https://storage.googleapis.com/netdata-nightlies/sha256sums.txt"
 	fi
+}
 
-	dir=$(mktemp -d "$pattern")
+update() {
+	[ -z "${logfile}" ] && info "Running on a terminal - (this script also supports running headless from crontab)"
 
+	dir=$(create_tmp_directory)
 	cd "$dir"
 
 	download "${NETDATA_TARBALL_CHECKSUM_URL}" "${dir}/sha256sum.txt" >&3 2>&3
@@ -85,11 +102,9 @@ update() {
 	fi
 
 	info "Re-installing netdata..."
-	eval "${REINSTALL_COMMAND} --dont-wait ${do_not_start}" >&3 2>&3 || failed "FAILED TO COMPILE/INSTALL NETDATA"
+	eval "${REINSTALL_COMMAND} --dont-wait ${do_not_start}" >&3 2>&3 || fatal "FAILED TO COMPILE/INSTALL NETDATA"
 	sed -i '/NETDATA_TARBALL/d' "${ENVIRONMENT_FILE}"
 	cat <<EOF >>"${ENVIRONMENT_FILE}"
-NETDATA_TARBALL_URL="$NETDATA_TARBALL_URL"
-NETDATA_TARBALL_CHECKSUM_URL="$NETDATA_TARBALL_CHECKSUM_URL"
 NETDATA_TARBALL_CHECKSUM="$NEW_CHECKSUM"
 EOF
 
@@ -105,8 +120,7 @@ EOF
 source "${ENVIRONMENT_FILE}" || exit 1
 
 if [ "${INSTALL_UID}" != "$(id -u)" ]; then
-	echo >&2 "You are running this script as user with uid $(id -u). We recommend to run this script as root (user with uid 0)"
-	exit 1
+	fatal "You are running this script as user with uid $(id -u). We recommend to run this script as root (user with uid 0)"
 fi
 
 logfile=
@@ -122,6 +136,7 @@ else
 	exec 3>"${logfile}"
 fi
 
+set_tarball_urls "${RELEASE_CHANNEL}"
 
 # the installer updates this script - so we run and exit in a single line
 update && exit 0