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#!/usr/bin/env bash
# Netdata updater utility
#
# Variables needed by script:
# - PATH
# - CFLAGS
# - LDFLAGS
# - IS_NETDATA_STATIC_BINARY
# - NETDATA_CONFIGURE_OPTIONS
# - REINSTALL_OPTIONS
# - NETDATA_TARBALL_URL
# - NETDATA_TARBALL_CHECKSUM_URL
# - NETDATA_TARBALL_CHECKSUM
# - NETDATA_PREFIX / NETDATA_LIB_DIR (After 1.16.1 we will only depend on lib dir)
#
# Copyright: SPDX-License-Identifier: GPL-3.0-or-later
#
# Author: Paweł Krupa <paulfantom@gmail.com>
# Author: Pavlos Emm. Katsoulakis <paul@netdata.cloud>
set -e
info() {
echo >&3 "$(date) : INFO: " "${@}"
}
error() {
echo >&3 "$(date) : ERROR: " "${@}"
}
safe_sha256sum() {
# Within the contexct of the installer, we only use -c option that is common between the two commands
# We will have to reconsider if we start non-common options
if command -v sha256sum > /dev/null 2>&1; then
sha256sum "$@"
elif command -v shasum > /dev/null 2>&1; then
shasum -a 256 "$@"
else
fatal "I could not find a suitable checksum binary to use"
fi
}
# this is what we will do if it fails (head-less only)
fatal() {
error "FAILED TO UPDATE NETDATA : ${1}"
exit 1
}
cleanup() {
if [ -n "${logfile}" ]; then
cat >&2 "${logfile}"
rm "${logfile}"
fi
if [ -n "$tmpdir" ] && [ -d "$tmpdir" ]; then
rm -rf "$tmpdir"
fi
}
create_tmp_directory() {
# Check if tmp is mounted as noexec
if grep -Eq '^[^ ]+ /tmp [^ ]+ ([^ ]*,)?noexec[, ]' /proc/mounts; then
pattern="$(pwd)/netdata-updater-XXXXXX"
else
pattern="/tmp/netdata-updater-XXXXXX"
fi
mktemp -d "$pattern"
}
download() {
url="${1}"
dest="${2}"
if command -v curl > /dev/null 2>&1; then
curl -sSL --connect-timeout 10 --retry 3 "${url}" > "${dest}" || fatal "Cannot download ${url}"
elif command -v wget > /dev/null 2>&1; then
wget -T 15 -O - "${url}" > "${dest}" || fatal "Cannot download ${url}"
else
fatal "I need curl or wget to proceed, but neither is available on this system."
fi
}
parse_version() {
r="${1}"
if echo "${r}" | grep -q '^v.*'; then
# shellcheck disable=SC2001
# XXX: Need a regex group subsitutation here.
r="$(echo "${r}" | sed -e 's/^v\(.*\)/\1/')"
fi
read -r -a p <<< "$(echo "${r}" | tr '-' ' ')"
v="${p[0]}"
b="${p[1]}"
_="${p[2]}" # ignore the SHA
if [[ ! "${b}" =~ ^[0-9]+$ ]]; then
b="0"
fi
read -r -a pp <<< "$(echo "${v}" | tr '.' ' ')"
printf "%03d%03d%03d%03d" "${pp[0]}" "${pp[1]}" "${pp[2]}" "${b}"
}
get_latest_version() {
local latest
if [ "${RELEASE_CHANNEL}" == "stable" ]; then
latest="$(download "https://api.github.com/repos/netdata/netdata/releases/latest" /dev/stdout | grep tag_name | cut -d'"' -f4)"
else
latest="$(download "https://storage.googleapis.com/netdata-nightlies/latest-version.txt" /dev/stdout)"
fi
parse_version "$latest"
}
set_tarball_urls() {
local extension="tar.gz"
if [ "$2" == "yes" ]; then
extension="gz.run"
fi
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-$latest.${extension}"
export NETDATA_TARBALL_CHECKSUM_URL="https://github.com/netdata/netdata/releases/download/$latest/sha256sums.txt"
else
export NETDATA_TARBALL_URL="https://storage.googleapis.com/netdata-nightlies/netdata-latest.${extension}"
export NETDATA_TARBALL_CHECKSUM_URL="https://storage.googleapis.com/netdata-nightlies/sha256sums.txt"
fi
}
update() {
[ -z "${logfile}" ] && info "Running on a terminal - (this script also supports running headless from crontab)"
RUN_INSTALLER=0
tmpdir=$(create_tmp_directory)
cd "$tmpdir" || exit 1
download "${NETDATA_TARBALL_CHECKSUM_URL}" "${tmpdir}/sha256sum.txt" >&3 2>&3
current_version="$(command -v netdata > /dev/null && parse_version "$(netdata -v | cut -f 2 -d ' ')")"
latest_version="$(get_latest_version)"
# If we can't get the current version for some reason assume `0`
current_version="${current_version:-0}"
# If we can't get the latest version for some reason assume `0`
latest_version="${latest_version:-0}"
info "Current Version: ${current_version}"
info "Latest Version: ${latest_version}"
if [ "${latest_version}" -gt 0 ] && [ "${current_version}" -gt 0 ] && [ "${current_version}" -ge "${latest_version}" ]; then
info "Newest version (current=${current_version} >= latest=${latest_version}) is already installed"
elif [ -n "${NETDATA_TARBALL_CHECKSUM}" ] && grep "${NETDATA_TARBALL_CHECKSUM}" sha256sum.txt >&3 2>&3; then
info "Newest version is already installed"
else
download "${NETDATA_TARBALL_URL}" "${tmpdir}/netdata-latest.tar.gz"
if ! grep netdata-latest.tar.gz sha256sum.txt | safe_sha256sum -c - >&3 2>&3; then
fatal "Tarball checksum validation failed. Stopping netdata upgrade and leaving tarball in ${tmpdir}"
fi
NEW_CHECKSUM="$(safe_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-* || exit 1
RUN_INSTALLER=1
cd "${NETDATA_LOCAL_TARBAL_OVERRIDE}" || exit 1
fi
# We got the sources, run the update now
if [ ${RUN_INSTALLER} -eq 1 ]; then
# signal netdata to start saving its database
# this is handy if your database is big
possible_pids=$(pidof netdata)
do_not_start=
if [ -n "${possible_pids}" ]; then
read -r -a pids_to_kill <<< "${possible_pids}"
kill -USR1 "${pids_to_kill[@]}"
else
# netdata is currently not running, so do not start it after updating
do_not_start="--dont-start-it"
fi
if [ -n "${NETDATA_SELECTED_DASHBOARD}" ] ; then
env="NETDATA_SELECTED_DASHBOARD=${NETDATA_SELECTED_DASHBOARD}"
fi
info "Re-installing netdata..."
eval "${env} ./netdata-installer.sh ${REINSTALL_OPTIONS} --dont-wait ${do_not_start}" >&3 2>&3 || fatal "FAILED TO COMPILE/INSTALL NETDATA"
# We no longer store checksum info here. but leave this so that we clean up all environment files upon next update.
sed -i '/NETDATA_TARBALL/d' "${ENVIRONMENT_FILE}"
info "Updating tarball checksum info"
echo "${NEW_CHECKSUM}" > "${NETDATA_LIB_DIR}/netdata.tarball.checksum"
fi
rm -rf "${tmpdir}" >&3 2>&3
[ -n "${logfile}" ] && rm "${logfile}" && logfile=
return 0
}
logfile=
tmpdir=
trap cleanup EXIT
# Usually stored in /etc/netdata/.environment
: "${ENVIRONMENT_FILE:=THIS_SHOULD_BE_REPLACED_BY_INSTALLER_SCRIPT}"
# shellcheck source=/dev/null
source "${ENVIRONMENT_FILE}" || exit 1
# We dont expect to find lib dir variable on older installations, so load this path if none found
export NETDATA_LIB_DIR="${NETDATA_LIB_DIR:-${NETDATA_PREFIX}/var/lib/netdata}"
# Source the tarbal checksum, if not already available from environment (for existing installations with the old logic)
[[ -z "${NETDATA_TARBALL_CHECKSUM}" ]] && [[ -f ${NETDATA_LIB_DIR}/netdata.tarball.checksum ]] && NETDATA_TARBALL_CHECKSUM="$(cat "${NETDATA_LIB_DIR}/netdata.tarball.checksum")"
if [ "${INSTALL_UID}" != "$(id -u)" ]; then
fatal "You are running this script as user with uid $(id -u). We recommend to run this script as root (user with uid 0)"
fi
if [ -t 2 ]; then
# we are running on a terminal
# open fd 3 and send it to stderr
exec 3>&2
else
# we are headless
# create a temporary file for the log
logfile="$(mktemp "${logfile}"/netdata-updater.log.XXXXXX)"
# open fd 3 and send it to logfile
exec 3> "${logfile}"
fi
set_tarball_urls "${RELEASE_CHANNEL}" "${IS_NETDATA_STATIC_BINARY}"
if [ "${IS_NETDATA_STATIC_BINARY}" == "yes" ]; then
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