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Diffstat (limited to '')
| -rw-r--r-- | packaging/installer/netdata-updater.sh | 115 |
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 0000000..96f7c12 --- /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 |