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-rw-r--r--packaging/installer/functions.sh797
1 files changed, 797 insertions, 0 deletions
diff --git a/packaging/installer/functions.sh b/packaging/installer/functions.sh
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+++ b/packaging/installer/functions.sh
@@ -0,0 +1,797 @@
+# no shebang necessary - this is a library to be sourced
+# 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
+
+# make sure we have a UID
+[ -z "${UID}" ] && UID="$(id -u)"
+
+# -----------------------------------------------------------------------------
+# checking the availability of commands
+
+which_cmd() {
+ # shellcheck disable=SC2230
+ which "${1}" 2>/dev/null || command -v "${1}" 2>/dev/null
+}
+
+check_cmd() {
+ which_cmd "${1}" >/dev/null 2>&1 && return 0
+ return 1
+}
+
+# -----------------------------------------------------------------------------
+
+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 check_cmd tput; 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} --- "
+}
+
+# -----------------------------------------------------------------------------
+
+netdata_banner() {
+ 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="${msg:0:$((${#l2} - 23))}..."
+
+ start="$((${#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
+}
+
+# -----------------------------------------------------------------------------
+# portable service command
+
+service_cmd="$(which_cmd service)"
+rcservice_cmd="$(which_cmd rc-service)"
+systemctl_cmd="$(which_cmd systemctl)"
+service() {
+ local cmd="${1}" action="${2}"
+
+ if [ ! -z "${systemctl_cmd}" ]; then
+ run "${systemctl_cmd}" "${action}" "${cmd}"
+ return $?
+ elif [ ! -z "${service_cmd}" ]; then
+ run "${service_cmd}" "${cmd}" "${action}"
+ return $?
+ elif [ ! -z "${rcservice_cmd}" ]; then
+ run "${rcservice_cmd}" "${cmd}" "${action}"
+ return $?
+ fi
+ return 1
+}
+
+# -----------------------------------------------------------------------------
+# portable pidof
+
+pidof_cmd="$(which_cmd pidof)"
+pidof() {
+ if [ ! -z "${pidof_cmd}" ]; then
+ ${pidof_cmd} "${@}"
+ return $?
+ else
+ ps -acxo pid,comm |
+ sed "s/^ *//g" |
+ grep netdata |
+ cut -d ' ' -f 1
+ return $?
+ fi
+}
+
+# -----------------------------------------------------------------------------
+# portable delete recursively interactively
+
+portable_deletedir_recursively_interactively() {
+ if [ ! -z "$1" -a -d "$1" ]; then
+ if [ "$(uname -s)" = "Darwin" ]; then
+ echo >&2
+ read >&2 -p "Press ENTER to recursively delete directory '$1' > "
+ echo >&2 "Deleting directory '$1' ..."
+ run rm -R "$1"
+ else
+ echo >&2
+ echo >&2 "Deleting directory '$1' ..."
+ run rm -I -R "$1"
+ fi
+ else
+ echo "Directory '$1' does not exist."
+ fi
+}
+
+# -----------------------------------------------------------------------------
+
+export SYSTEM_CPUS=1
+portable_find_processors() {
+ if [ -f "/proc/cpuinfo" ]; then
+ # linux
+ SYSTEM_CPUS=$(grep -c ^processor /proc/cpuinfo)
+ else
+ # freebsd
+ SYSTEM_CPUS=$(sysctl hw.ncpu 2>/dev/null | grep ^hw.ncpu | cut -d ' ' -f 2)
+ fi
+ [ -z "${SYSTEM_CPUS}" -o $((SYSTEM_CPUS)) -lt 1 ] && SYSTEM_CPUS=1
+}
+portable_find_processors
+
+# -----------------------------------------------------------------------------
+
+run_ok() {
+ printf >&2 "${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"
+}
+
+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
+}
+
+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
+
+ 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"
+
+ "${@}"
+
+ local ret=$?
+ 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 ${ret}
+}
+
+getent_cmd="$(which_cmd getent)"
+portable_check_user_exists() {
+ local username="${1}" found=
+
+ if [ ! -z "${getent_cmd}" ]; then
+ "${getent_cmd}" passwd "${username}" >/dev/null 2>&1
+ return $?
+ fi
+
+ found="$(cut -d ':' -f 1 </etc/passwd | grep "^${username}$")"
+ [ "${found}" = "${username}" ] && return 0
+ return 1
+}
+
+portable_check_group_exists() {
+ local groupname="${1}" found=
+
+ if [ ! -z "${getent_cmd}" ]; then
+ "${getent_cmd}" group "${groupname}" >/dev/null 2>&1
+ return $?
+ fi
+
+ found="$(cut -d ':' -f 1 </etc/group | grep "^${groupname}$")"
+ [ "${found}" = "${groupname}" ] && return 0
+ return 1
+}
+
+portable_check_user_in_group() {
+ local username="${1}" groupname="${2}" users=
+
+ if [ ! -z "${getent_cmd}" ]; then
+ users="$(getent group "${groupname}" | cut -d ':' -f 4)"
+ else
+ users="$(grep "^${groupname}:" </etc/group | cut -d ':' -f 4)"
+ fi
+
+ [[ ",${users}," =~ ,${username}, ]] && return 0
+ return 1
+}
+
+portable_add_user() {
+ local username="${1}" homedir="${2}"
+
+ [ -z "${homedir}" ] && homedir="/tmp"
+
+ portable_check_user_exists "${username}"
+ [ $? -eq 0 ] && echo >&2 "User '${username}' already exists." && return 0
+
+ echo >&2 "Adding ${username} user account with home ${homedir} ..."
+
+ # shellcheck disable=SC2230
+ local nologin="$(which nologin 2>/dev/null || command -v nologin 2>/dev/null || echo '/bin/false')"
+
+ # Linux
+ if check_cmd useradd; then
+ run useradd -r -g "${username}" -c "${username}" -s "${nologin}" --no-create-home -d "${homedir}" "${username}" && return 0
+ fi
+
+ # FreeBSD
+ if check_cmd pw; then
+ run pw useradd "${username}" -d "${homedir}" -g "${username}" -s "${nologin}" && return 0
+ fi
+
+ # BusyBox
+ if check_cmd adduser; then
+ run adduser -h "${homedir}" -s "${nologin}" -D -G "${username}" "${username}" && return 0
+ fi
+
+ echo >&2 "Failed to add ${username} user account !"
+
+ return 1
+}
+
+portable_add_group() {
+ local groupname="${1}"
+
+ portable_check_group_exists "${groupname}"
+ [ $? -eq 0 ] && echo >&2 "Group '${groupname}' already exists." && return 0
+
+ echo >&2 "Adding ${groupname} user group ..."
+
+ # Linux
+ if check_cmd groupadd; then
+ run groupadd -r "${groupname}" && return 0
+ fi
+
+ # FreeBSD
+ if check_cmd pw; then
+ run pw groupadd "${groupname}" && return 0
+ fi
+
+ # BusyBox
+ if check_cmd addgroup; then
+ run addgroup "${groupname}" && return 0
+ fi
+
+ echo >&2 "Failed to add ${groupname} user group !"
+ return 1
+}
+
+portable_add_user_to_group() {
+ local groupname="${1}" username="${2}"
+
+ portable_check_group_exists "${groupname}"
+ [ $? -ne 0 ] && echo >&2 "Group '${groupname}' does not exist." && return 1
+
+ # find the user is already in the group
+ if portable_check_user_in_group "${username}" "${groupname}"; then
+ # username is already there
+ echo >&2 "User '${username}' is already in group '${groupname}'."
+ return 0
+ else
+ # username is not in group
+ echo >&2 "Adding ${username} user to the ${groupname} group ..."
+
+ # Linux
+ if check_cmd usermod; then
+ run usermod -a -G "${groupname}" "${username}" && return 0
+ fi
+
+ # FreeBSD
+ if check_cmd pw; then
+ run pw groupmod "${groupname}" -m "${username}" && return 0
+ fi
+
+ # BusyBox
+ if check_cmd addgroup; then
+ run addgroup "${username}" "${groupname}" && return 0
+ fi
+
+ echo >&2 "Failed to add user ${username} to group ${groupname} !"
+ return 1
+ fi
+}
+
+iscontainer() {
+ # man systemd-detect-virt
+ local cmd=$(which_cmd systemd-detect-virt)
+ if [ ! -z "${cmd}" -a -x "${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 $pid
+ })
+ if [ ! -z "${pid}" ]; then
+ pid=$(( pid + 0 ))
+ [ ${pid} -gt 1 ] && return 0
+ fi
+
+ # lxc sets environment variable 'container'
+ [ ! -z "${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
+
+ # 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=$(which systemctl 2>/dev/null || command -v systemctl 2>/dev/null)
+ [ -z "${systemctl}" -o ! -x "${systemctl}" ] && return 1
+
+ # if pid 1 is systemd, it is systemd
+ [ "$(basename $(readlink /proc/1/exe) 2>/dev/null)" = "systemd" ] && return 0
+
+ # if systemd is not running, it is not systemd
+ pids=$(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/${p}/ns/pid 2>/dev/null)"
+
+ # if pid of systemd is in our namespace, it is systemd
+ [ ! -z "${myns}" ] && [ "${myns}" = "${ns}" ] && return 0
+ done
+
+ # 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 -a ! -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}" = "debian-7" \
+ -o "${key}" = "ubuntu-12.04" \
+ -o "${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 '${key}'. Open a github issue to help us fix it."
+ fi
+
+ return 1
+}
+
+NETDATA_START_CMD="netdata"
+NETDATA_STOP_CMD="killall netdata"
+
+install_netdata_service() {
+ local uname="$(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 [ "${uname}" = "FreeBSD" ]; then
+
+ run cp system/netdata-freebsd /etc/rc.d/netdata &&
+ NETDATA_START_CMD="service netdata start" &&
+ NETDATA_STOP_CMD="service netdata stop" &&
+ return 0
+
+ elif issystemd; then
+ # systemd is running on this system
+ NETDATA_START_CMD="systemctl start netdata"
+ NETDATA_STOP_CMD="systemctl stop netdata"
+
+ SYSTEMD_DIRECTORY=""
+
+ if [ -d "/lib/systemd/system" ]; then
+ SYSTEMD_DIRECTORY="/lib/systemd/system"
+ elif [ -d "/usr/lib/systemd/system" ]; then
+ SYSTEMD_DIRECTORY="/usr/lib/systemd/system"
+ fi
+
+ if [ "${SYSTEMD_DIRECTORY}x" != "x" ]; then
+ echo >&2 "Installing systemd service..."
+ run cp system/netdata.service "${SYSTEMD_DIRECTORY}/netdata.service" &&
+ run systemctl daemon-reload &&
+ run systemctl enable netdata &&
+ return 0
+ else
+ echo >&2 "no systemd directory; cannot install netdata.service"
+ fi
+ else
+ install_non_systemd_init
+ local ret=$?
+
+ if [ ${ret} -eq 0 ]; then
+ if [ ! -z "${service_cmd}" ]; then
+ NETDATA_START_CMD="service netdata start"
+ NETDATA_STOP_CMD="service netdata stop"
+ elif [ ! -z "${rcservice_cmd}" ]; then
+ NETDATA_START_CMD="rc-service netdata start"
+ NETDATA_STOP_CMD="rc-service netdata stop"
+ fi
+ fi
+
+ return ${ret}
+ fi
+ fi
+
+ return 1
+}
+
+# -----------------------------------------------------------------------------
+# stop netdata
+
+pidisnetdata() {
+ if [ -d /proc/self ]; then
+ [ -z "$1" -o ! -f "/proc/$1/stat" ] && return 1
+ [ "$(cat "/proc/$1/stat" | cut -d '(' -f 2 | cut -d ')' -f 1)" = "netdata" ] && return 0
+ return 1
+ fi
+ return 0
+}
+
+stop_netdata_on_pid() {
+ local pid="${1}" ret=0 count=0
+
+ pidisnetdata ${pid} || return 0
+
+ printf >&2 "Stopping netdata on pid ${pid} ..."
+ while [ ! -z "$pid" -a ${ret} -eq 0 ]; do
+ if [ ${count} -gt 45 ]; then
+ echo >&2 "Cannot stop the running netdata on pid ${pid}."
+ return 1
+ fi
+
+ count=$((count + 1))
+
+ run kill ${pid} 2>/dev/null
+ ret=$?
+
+ test ${ret} -eq 0 && printf >&2 "." && sleep 2
+ done
+
+ echo >&2
+ if [ ${ret} -eq 0 ]; then
+ echo >&2 "SORRY! CANNOT STOP netdata ON PID ${pid} !"
+ return 1
+ fi
+
+ echo >&2 "netdata on pid ${pid} stopped."
+ return 0
+}
+
+netdata_pids() {
+ local p myns ns
+
+ myns="$(readlink /proc/self/ns/pid 2>/dev/null)"
+
+ # echo >&2 "Stopping a (possibly) running netdata (namespace '${myns}')..."
+
+ 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/${p}/ns/pid 2>/dev/null)"
+
+ if [ -z "${myns}" -o -z "${ns}" -o "${myns}" = "${ns}" ]; then
+ pidisnetdata ${p} && echo "${p}"
+ fi
+ done
+}
+
+stop_all_netdata() {
+ local p
+ for p in $(netdata_pids); do
+ stop_netdata_on_pid ${p}
+ done
+}
+
+# -----------------------------------------------------------------------------
+# restart netdata
+
+restart_netdata() {
+ local netdata="${1}"
+ shift
+
+ local started=0
+
+ progress "Start netdata"
+
+ if [ "${UID}" -eq 0 ]; then
+ service netdata stop
+ stop_all_netdata
+ service netdata restart && started=1
+
+ if [ ${started} -eq 1 -a -z "$(netdata_pids)" ]; then
+ echo >&2 "Ooops! it seems netdata is not started."
+ started=0
+ fi
+
+ if [ ${started} -eq 0 ]; then
+ service netdata start && started=1
+ fi
+ fi
+
+ if [ ${started} -eq 1 -a -z "$(netdata_pids)" ]; then
+ echo >&2 "Hm... it seems netdata is still not started."
+ started=0
+ fi
+
+ if [ ${started} -eq 0 ]; then
+ # still not started...
+
+ run stop_all_netdata
+ run "${netdata}" "${@}"
+ return $?
+ fi
+
+ return 0
+}
+
+# -----------------------------------------------------------------------------
+# install netdata logrotate
+
+install_netdata_logrotate() {
+ if [ ${UID} -eq 0 ]; then
+ if [ -d /etc/logrotate.d ]; then
+ if [ ! -f /etc/logrotate.d/netdata ]; then
+ run cp system/netdata.logrotate /etc/logrotate.d/netdata
+ fi
+
+ if [ -f /etc/logrotate.d/netdata ]; then
+ run chmod 644 /etc/logrotate.d/netdata
+ fi
+
+ return 0
+ fi
+ fi
+
+ return 1
+}
+
+# -----------------------------------------------------------------------------
+# download netdata.conf
+
+fix_netdata_conf() {
+ local owner="${1}"
+
+ if [ "${UID}" -eq 0 ]; then
+ run chown "${owner}" "${filename}"
+ fi
+ run chmod 0664 "${filename}"
+}
+
+generate_netdata_conf() {
+ local owner="${1}" filename="${2}" url="${3}"
+
+ if [ ! -s "${filename}" ]; then
+ cat >"${filename}" <<EOFCONF
+# netdata can generate its own config.
+# Get it with:
+#
+# wget -O ${filename} "${url}"
+#
+# or
+#
+# curl -s -o ${filename} "${url}"
+#
+EOFCONF
+ fix_netdata_conf "${owner}"
+ fi
+}
+
+download_netdata_conf() {
+ local owner="${1}" filename="${2}" url="${3}"
+
+ if [ ! -s "${filename}" ]; then
+ echo >&2
+ echo >&2 "-------------------------------------------------------------------------------"
+ echo >&2
+ echo >&2 "Downloading default configuration from netdata..."
+ sleep 5
+
+ # remove a possibly obsolete download
+ [ -f "${filename}.new" ] && rm "${filename}.new"
+
+ # disable a proxy to get data from the local netdata
+ export http_proxy=
+ export https_proxy=
+
+ # try curl
+ run curl -s -o "${filename}.new" "${url}"
+ ret=$?
+
+ if [ ${ret} -ne 0 -o ! -s "${filename}.new" ]; then
+ # try wget
+ run wget -O "${filename}.new" "${url}"
+ ret=$?
+ fi
+
+ if [ ${ret} -eq 0 -a -s "${filename}.new" ]; then
+ run mv "${filename}.new" "${filename}"
+ run_ok "New configuration saved for you to edit at ${filename}"
+ else
+ [ -f "${filename}.new" ] && rm "${filename}.new"
+ run_failed "Cannnot download configuration from netdata daemon using url '${url}'"
+
+ generate_netdata_conf "${owner}" "${filename}" "${url}"
+ fi
+
+ fix_netdata_conf "${owner}"
+ fi
+}
+
+# -----------------------------------------------------------------------------
+# add netdata user and group
+
+NETDATA_WANTED_GROUPS="docker nginx varnish haproxy adm nsd proxy squid ceph nobody"
+NETDATA_ADDED_TO_GROUPS=""
+add_netdata_user_and_group() {
+ local homedir="${1}" g
+
+ if [ ${UID} -eq 0 ]; then
+ portable_add_group netdata || return 1
+ portable_add_user netdata "${homedir}" || return 1
+
+ for g in ${NETDATA_WANTED_GROUPS}; do
+ portable_add_user_to_group ${g} netdata && NETDATA_ADDED_TO_GROUPS="${NETDATA_ADDED_TO_GROUPS} ${g}"
+ done
+
+ [ ~netdata = / ] && cat <<USERMOD
+
+The netdata user has its home directory set to /
+You may want to change it, using this command:
+
+# usermod -d "${homedir}" netdata
+
+USERMOD
+ return 0
+ fi
+
+ return 1
+}