1 files changed, 115 insertions, 0 deletions
diff --git a/packaging/installer/netdata-updater.sh b/packaging/installer/netdata-updater.sh
new file mode 100644
index 000000000..96f7c1270
--- /dev/null
+++ b/packaging/installer/netdata-updater.sh
@@ -0,0 +1,115 @@
+#!/usr/bin/env bash
+#shellcheck disable=SC2164
+
+# this script will uninstall netdata
+
+# Variables needed by script:
+#  - PATH
+#  - CFLAGS
+#  - NETDATA_CONFIGURE_OPTIONS
+#  - REINSTALL_COMMAND
+#  - NETDATA_TARBALL_URL
+#  - NETDATA_TARBALL_CHECKSUM_URL
+#  - NETDATA_TARBALL_CHECKSUM
+
+
+# Usually stored in /etc/netdata/.environment
+: "${ENVIRONMENT_FILE:=THIS_SHOULD_BE_REPLACED_BY_INSTALLER_SCRIPT}"
+
+# shellcheck source=/dev/null
+source "${ENVIRONMENT_FILE}" || exit 1
+
+if [ "${INSTALL_UID}" != "$(id -u)" ]; then
+	echo >&2 "You are running this script as user with uid $(id -u). We recommend to run this script as root (user with uid 0)"
+	exit 1
+fi
+
+# signal netdata to start saving its database
+# this is handy if your database is big
+pids=$(pidof netdata)
+do_not_start=
+if [ -n "${pids}" ]; then
+	#shellcheck disable=SC2086
+	kill -USR1 ${pids}
+else
+	# netdata is currently not running, so do not start it after updating
+	do_not_start="--dont-start-it"
+fi
+
+tmp=
+if [ -t 2 ]; then
+	# we are running on a terminal
+	# open fd 3 and send it to stderr
+	exec 3>&2
+else
+	# we are headless
+	# create a temporary file for the log
+	tmp=$(mktemp /tmp/netdata-updater.log.XXXXXX)
+	# open fd 3 and send it to tmp
+	exec 3>"${tmp}"
+fi
+
+info() {
+	echo >&3 "$(date) : INFO: " "${@}"
+}
+
+error() {
+	echo >&3 "$(date) : ERROR: " "${@}"
+}
+
+# this is what we will do if it fails (head-less only)
+failed() {
+	error "FAILED TO UPDATE NETDATA : ${1}"
+
+	if [ -n "${tmp}" ]; then
+		cat >&2 "${tmp}"
+		rm "${tmp}"
+	fi
+	exit 1
+}
+
+update() {
+	[ -z "${tmp}" ] && info "Running on a terminal - (this script also supports running headless from crontab)"
+
+	# Check if tmp is mounted as noexec
+	if grep -Eq '^[^ ]+ /tmp [^ ]+ ([^ ]*,)?noexec[, ]' /proc/mounts; then
+		pattern="/opt/netdata-updater-XXXXXX"
+	else
+		pattern="/tmp/netdata-updater-XXXXXX"
+	fi
+
+	dir=$(mktemp -d "$pattern")
+
+	cd "$dir"
+
+	wget "${NETDATA_TARBALL_CHECKSUM_URL}" -O sha256sum.txt >&3 2>&3
+	if grep "${NETDATA_TARBALL_CHECKSUM}" sha256sum.txt >&3 2>&3; then
+		info "Newest version is already installed"
+		exit 0
+	fi
+
+	wget "${NETDATA_TARBALL_URL}" -O netdata-latest.tar.gz >&3 2>&3
+	if ! grep netdata-latest.tar.gz sha256sum.txt | sha256sum --check - >&3 2>&3; then
+		failed "Tarball checksum validation failed. Stopping netdata upgrade and leaving tarball in ${dir}"
+	fi
+	NEW_CHECKSUM="$(sha256sum netdata-latest.tar.gz 2>/dev/null| cut -d' ' -f1)"
+	tar -xf netdata-latest.tar.gz >&3 2>&3
+	rm netdata-latest.tar.gz >&3 2>&3
+	cd netdata-*
+
+	info "Re-installing netdata..."
+	${REINSTALL_COMMAND} --dont-wait ${do_not_start} >&3 2>&3 || failed "FAILED TO COMPILE/INSTALL NETDATA"
+	sed -i '/NETDATA_TARBALL/d' "${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
+
+	rm -rf "${dir}" >&3 2>&3
+	[ -n "${tmp}" ] && rm "${tmp}" && tmp=
+	return 0
+}
+
+# the installer updates this script - so we run and exit in a single line
+update && exit 0