X-Git-Url: https://arthur.barton.de/gitweb/?a=blobdiff_plain;f=netdata-installer.sh;h=4e1847fa3cd1c41974b0b6a659ea91015d7416ca;hb=530ef0b6bb80eb32416752bfcc7a5b50f021503e;hp=891ed3b1aa2cc33fcfb5ce49760200d277c41038;hpb=3922a79bef9e908cfe5d268d34779899d4040ebb;p=netdata.git

diff --git a/netdata-installer.sh b/netdata-installer.sh
index 891ed3b1..4e1847fa 100755
--- a/netdata-installer.sh
+++ b/netdata-installer.sh
@@ -1,9 +1,20 @@
 #!/usr/bin/env bash
 
+export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/bin:/usr/local/sbin"
+
+netdata_source_dir="$(pwd)"
+installer_dir="$(dirname "${0}")"
+
+if [ "${netdata_source_dir}" != "${installer_dir}" -a "${installer_dir}" != "." ]
+    then
+    echo >&2 "Warninng: you are currently in '${netdata_source_dir}' but the installer is in '${installer_dir}'."
+fi
+
 # reload the user profile
 [ -f /etc/profile ] && . /etc/profile
 
-export PATH="${PATH}:/sbin:/usr/sbin:/usr/local/bin:/usr/local/sbin"
+# make sure /etc/profile does not change our current directory
+cd "${netdata_source_dir}" || exit 1
 
 # fix PKG_CHECK_MODULES error
 if [ -d /usr/share/aclocal ]
@@ -13,10 +24,17 @@ then
 fi
 
 LC_ALL=C
-umask 022
+umask 002
+
+# Be nice on production environments
+renice 19 $$ >/dev/null 2>/dev/null
+
+processors=$(grep ^processor </proc/cpuinfo 2>/dev/null | wc -l)
+[ $(( processors )) -lt 1 ] && processors=1
 
 # you can set CFLAGS before running installer
-CFLAGS="${CFLAGS--O3}"
+CFLAGS="${CFLAGS--O2}"
+[ "z${CFLAGS}" = "z-O3" ] && CFLAGS="-O2"
 
 # keep a log of this command
 printf "\n# " >>netdata-installer.log
@@ -28,6 +46,30 @@ printf "\n" >>netdata-installer.log
 REINSTALL_PWD="${PWD}"
 REINSTALL_COMMAND="$(printf "%q " "$0" "${@}"; printf "\n")"
 
+banner() {
+    local   l1="  ^"                                                                      \
+            l2="  |.-.   .-.   .-.   .-.   .-.   .-.   .-.   .-.   .-.   .-.   .-.   .-.   .-"  \
+            l3="  |   '-'   '-'   '-'   '-'   '-'   '-'   '-'   '-'   '-'   '-'   '-'   '-'  "  \
+            l4="  +----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+-----+--->" \
+            sp="                                                                        " \
+            netdata="netdata" start end msg="${*}"
+
+    [ ${#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} + ${#msg} + 4 ))
+
+    echo >&2
+    echo >&2 "${l1}"
+    echo >&2 "${l2:0:start}${sp:0:2}${netdata}${sp:0:$((end - start - 2 - ${#netdata}))}${l2:end:$((${#l2} - end))}"
+    echo >&2 "${l3:0:start}${sp:0:2}${msg}${sp:0:2}${l3:end:$((${#l2} - end))}"
+    echo >&2 "${l4}"
+    echo >&2
+}
+
+setcap="$(which setcap 2>/dev/null || command -v setcap 2>/dev/null)"
 service="$(which service 2>/dev/null || command -v service 2>/dev/null)"
 systemctl="$(which systemctl 2>/dev/null || command -v systemctl 2>/dev/null)"
 service() {
@@ -52,6 +94,7 @@ NETDATA_PREFIX=
 LIBS_ARE_HERE=0
 
 usage() {
+    banner "installer command line options"
     cat <<USAGE
 
 ${ME} <installer options>
@@ -82,7 +125,7 @@ Valid <installer options> are:
         Use this option to allow it continue
         without checking pkg-config.
 
-Netdata will by default be compiled with gcc optimization -O3
+Netdata will by default be compiled with gcc optimization -O2
 If you need to pass different CFLAGS, use something like this:
 
   CFLAGS="<gcc options>" ${ME} <installer options>
@@ -117,7 +160,7 @@ get_git_config_signatures() {
             do
                     git checkout ${c} "conf.d/${x}" || continue
                     s="$(cat "conf.d/${x}" | md5sum | cut -d ' ' -f 1)"
-                    echo >>configs.signatures.tmp "${x}:${s}"
+                    echo >>configs.signatures.tmp "${s}:${x}"
                     echo "    ${s}"
             done
             git checkout HEAD "conf.d/${x}" || break
@@ -129,7 +172,7 @@ get_git_config_signatures() {
         {
             echo "declare -A configs_signatures=("
             IFS=":"
-            while read file md5
+            while read md5 file
             do
                 echo "  ['${md5}']='${file}'"
             done
@@ -177,26 +220,24 @@ do
     fi
 done
 
+banner "real-time performance monitoring, done right!"
 cat <<BANNER
 
-Welcome to netdata!
-The real-time performance monitoring system.
+  You are about to build and install netdata to your system.
 
-You are about to build and install netdata to your system.
+  It will be installed at these locations:
 
-It will be installed at these locations:
+   - the daemon    at ${NETDATA_PREFIX}/usr/sbin/netdata
+   - config files  at ${NETDATA_PREFIX}/etc/netdata
+   - web files     at ${NETDATA_PREFIX}/usr/share/netdata
+   - plugins       at ${NETDATA_PREFIX}/usr/libexec/netdata
+   - cache files   at ${NETDATA_PREFIX}/var/cache/netdata
+   - db files      at ${NETDATA_PREFIX}/var/lib/netdata
+   - log files     at ${NETDATA_PREFIX}/var/log/netdata
+   - pid file      at ${NETDATA_PREFIX}/var/run
 
-  - the daemon    at ${NETDATA_PREFIX}/usr/sbin/netdata
-  - config files  at ${NETDATA_PREFIX}/etc/netdata
-  - web files     at ${NETDATA_PREFIX}/usr/share/netdata
-  - plugins       at ${NETDATA_PREFIX}/usr/libexec/netdata
-  - cache files   at ${NETDATA_PREFIX}/var/cache/netdata
-  - db files      at ${NETDATA_PREFIX}/var/lib/netdata
-  - log files     at ${NETDATA_PREFIX}/var/log/netdata
-  - pid file      at ${NETDATA_PREFIX}/var/run
-
-This installer allows you to change the installation path.
-Press Control-C and run the same command with --help for help.
+  This installer allows you to change the installation path.
+  Press Control-C and run the same command with --help for help.
 
 BANNER
 
@@ -204,6 +245,7 @@ if [ "${UID}" -ne 0 ]
     then
     if [ -z "${NETDATA_PREFIX}" ]
         then
+        banner "wrong command line options!"
         cat <<NONROOTNOPREFIX
 
 Sorry! This will fail!
@@ -276,6 +318,7 @@ then
     then
         echo "Will skip autoreconf step"
     else
+        banner "autotools v2.60 required"
         cat <<"EOF"
 
 -------------------------------------------------------------------------------
@@ -309,11 +352,12 @@ if [ ${DONOTWAIT} -eq 0 ]
 fi
 
 build_error() {
+    banner "sorry, it failed to build..."
     cat <<EOF
 
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
-Sorry! NetData failed to build...
+Sorry! netdata failed to build...
 
 You many need to check these:
 
@@ -350,7 +394,7 @@ run() {
 
     printf >&2 "\n"
     printf >&2 ":-----------------------------------------------------------------------------\n"
-    printf >&2 "Running command:\n"
+    printf >&2 "Running command (in $(pwd)):\n"
     printf >&2 "\n"
     printf >&2 "%q " "${@}"
     printf >&2 "\n"
@@ -402,7 +446,7 @@ if [ -f src/netdata ]
 fi
 
 echo >&2 "Compiling netdata ..."
-run make || exit 1
+run make -j${processors} || exit 1
 
 if [ "${BASH_VERSINFO[0]}" -ge "4" ]
 then
@@ -516,46 +560,173 @@ do
     fi
 done
 
-NETDATA_ADDED_TO_DOCKER=0
-if [ ${UID} -eq 0 ]
+echo >&2 "Fixing permissions ..."
+
+check_cmd() {
+    which "${1}" >/dev/null 2>&1 && return 0
+    command -v "${1}" >/dev/null 2>&1 && return 0
+    return 1
+}
+
+portable_add_user() {
+    local username="${1}"
+
+    getent passwd "${username}" > /dev/null 2>&1
+    [ $? -eq 0 ] && return 0
+
+    echo >&2 "Adding ${username} user account ..."
+
+    local nologin="$(which nologin 2>/dev/null || command -v nologin 2>/dev/null || echo '/bin/false')"
+
+    # Linux
+    if check_cmd useradd
     then
-    getent group netdata > /dev/null
-    if [ $? -ne 0 ]
+        run useradd -r -g "${username}" -c "${username}" -s "${nologin}" -d / "${username}" && return 0
+    fi
+
+    # FreeBSD
+    if check_cmd pw
+    then
+        run pw useradd "${username}" -d / -g "${username}" -s "${nologin}" && return 0
+    fi
+
+    # BusyBox
+    if check_cmd adduser
+    then
+        run adduser -D -G "${username}" "${username}" && return 0
+    fi
+
+    echo >&2 "Failed to add ${username} user account !"
+
+    return 1
+}
+
+portable_add_group() {
+    local groupname="${1}"
+
+    getent group "${groupname}" > /dev/null 2>&1
+    [ $? -eq 0 ] && 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="${2}"
+
+    getent group "${groupname}" > /dev/null 2>&1
+    [ $? -ne 0 ] && return 1
+
+    # find the user is already in the group
+    local users=$(getent group "${groupname}" | cut -d ':' -f 4)
+    if [[ ",${users}," =~ ,${username}, ]]
+        then
+        # username is already there
+        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 "${username}" && return 0
+        fi
+
+        # BusyBox
+        if check_cmd addgroup
         then
-        echo >&2 "Adding netdata user group ..."
-        run groupadd -r netdata
+            run addgroup "${username}" "${groupname}" && return 0
+        fi
+
+        echo >&2 "Failed to add user ${username} to group ${groupname} !"
+        return 1
     fi
+}
 
-    getent passwd netdata > /dev/null
-    if [ $? -ne 0 ]
+iscontainer() {
+    # man systemd-detect-virt
+    local cmd=$(which systemd-detect-virt 2>/dev/null || command -v systemd-detect-virt 2>/dev/null)
+    if [ ! -z "${cmd}" -a -x "${cmd}" ]
         then
-        echo >&2 "Adding netdata user account ..."
-        run useradd -r -g netdata -c netdata -s $(which nologin || echo '/bin/false') -d / netdata
+        "${cmd}" --container >/dev/null 2>&1 && return 0
     fi
 
-    getent group docker > /dev/null
-    if [ $? -eq 0 ]
+    # /proc/1/sched exposes the host's pid of our init !
+    # http://stackoverflow.com/a/37016302
+    local pid=$( cat /proc/1/sched | head -n 1 | { IFS='(),#:' read name pid th threads; echo $pid; } )
+    local p=$(( pid + 0 ))
+    [ ${pid} -ne 1 ] && return 0
+
+    # lxc sets environment variable 'container'
+    [ ! -z "${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
-        # find the users in the docker group
-        docker=$(getent group docker | cut -d ':' -f 4)
-        if [[ ",${docker}," =~ ,netdata, ]]
-            then
-            # netdata is already there
-            :
-        else
-            # netdata is not in docker group
-            echo >&2 "Adding netdata user to the docker group (needed to get container names) ..."
-            run usermod -a -G docker netdata
-        fi
-        # let the uninstall script know
-        NETDATA_ADDED_TO_DOCKER=1
+        "/bin/running-in-container" >/dev/null 2>&1 && return 0
     fi
 
+    return 1
+}
+
+run find ./system/ -type f -a \! -name \*.in -a \! -name Makefile\* -a \! -name \*.conf -a \! -name \*.service -a \! -name \*.logrotate -exec chmod 755 {} \;
+
+NETDATA_ADDED_TO_DOCKER=0
+NETDATA_ADDED_TO_NGINX=0
+NETDATA_ADDED_TO_VARNISH=0
+NETDATA_ADDED_TO_HAPROXY=0
+if [ ${UID} -eq 0 ]
+    then
+    portable_add_group netdata
+    portable_add_user netdata
+    portable_add_user_to_group docker netdata && NETDATA_ADDED_TO_DOCKER=1
+    portable_add_user_to_group nginx  netdata && NETDATA_ADDED_TO_NGINX=1
+    portable_add_user_to_group varnish  netdata && NETDATA_ADDED_TO_VARNISH=1
+    portable_add_user_to_group haproxy  netdata && NETDATA_ADDED_TO_HAPROXY=1
+
     if [ -d /etc/logrotate.d -a ! -f /etc/logrotate.d/netdata ]
         then
         echo >&2 "Adding netdata logrotate configuration ..."
         run cp system/netdata.logrotate /etc/logrotate.d/netdata
     fi
+    
+    if [ -f /etc/logrotate.d/netdata ]
+        then
+        echo >&2 "Fixing netdata logrotate permissions ..."
+        run chmod 644 /etc/logrotate.d/netdata
+    fi
 fi
 
 
@@ -578,17 +749,20 @@ config_option() {
     echo "${value}"
 }
 
-# user
-defuser="netdata"
-[ ! "${UID}" = "0" ] && defuser="${USER}"
-NETDATA_USER="$( config_option "run as user" "${defuser}" )"
+# the user netdata will run as
+if [ "${UID}" = "0" ]
+    then
+    NETDATA_USER="$( config_option "run as user" "netdata" )"
+else
+    NETDATA_USER="${USER}"
+fi
 
-NETDATA_WEB_USER="$( config_option "web files owner" "${defuser}" )"
+# the owners of the web files
+NETDATA_WEB_USER="$(  config_option "web files owner" "${NETDATA_USER}" )"
 NETDATA_WEB_GROUP="$( config_option "web files group" "${NETDATA_WEB_USER}" )"
 
 # debug flags
-defdebug=0
-NETDATA_DEBUG="$( config_option "debug flags" ${defdebug} )"
+NETDATA_DEBUG="$( config_option "debug flags" 0 )"
 
 # port
 defport=19999
@@ -623,7 +797,35 @@ fi
 
 echo >&2
 echo >&2 "Fixing directories (user: ${NETDATA_USER})..."
-for x in "${NETDATA_WEB_DIR}" "${NETDATA_CONF_DIR}" "${NETDATA_CACHE_DIR}" "${NETDATA_LOG_DIR}" "${NETDATA_LIB_DIR}" "${NETDATA_CONF_DIR}/python.d" "${NETDATA_CONF_DIR}/charts.d" "${NETDATA_CONF_DIR}/node.d"
+
+# --- conf dir ----
+
+for x in "python.d" "charts.d" "node.d"
+do
+    if [ ! -d "${NETDATA_CONF_DIR}/${x}" ]
+        then
+        echo >&2 "Creating directory '${NETDATA_CONF_DIR}/${x}'"
+        run mkdir -p "${NETDATA_CONF_DIR}/${x}" || exit 1
+    fi
+done
+run chown -R "${NETDATA_USER}:${NETDATA_USER}" "${NETDATA_CONF_DIR}"
+run find "${NETDATA_CONF_DIR}" -type f -exec chmod 0660 {} \;
+run find "${NETDATA_CONF_DIR}" -type d -exec chmod 0775 {} \;
+
+# --- web dir ----
+
+if [ ! -d "${NETDATA_WEB_DIR}" ]
+    then
+    echo >&2 "Creating directory '${NETDATA_WEB_DIR}'"
+    run mkdir -p "${NETDATA_WEB_DIR}" || exit 1
+fi
+run chown -R "${NETDATA_WEB_USER}:${NETDATA_WEB_GROUP}" "${NETDATA_WEB_DIR}"
+run find "${NETDATA_WEB_DIR}" -type f -exec chmod 0664 {} \;
+run find "${NETDATA_WEB_DIR}" -type d -exec chmod 0775 {} \;
+
+# --- data dirs ----
+
+for x in "${NETDATA_LIB_DIR}" "${NETDATA_CACHE_DIR}" "${NETDATA_LOG_DIR}"
 do
     if [ ! -d "${x}" ]
         then
@@ -631,32 +833,62 @@ do
         run mkdir -p "${x}" || exit 1
     fi
 
-    if [ ${UID} -eq 0 ]
+    run chown -R "${NETDATA_USER}:${NETDATA_USER}" "${x}"
+    #run find "${x}" -type f -exec chmod 0660 {} \;
+    #run find "${x}" -type d -exec chmod 0770 {} \;
+done
+
+run chmod 755 "${NETDATA_LOG_DIR}"
+
+# --- plugins ----
+
+if [ ${UID} -eq 0 ]
+    then
+    run chown "${NETDATA_USER}:root" "${NETDATA_LOG_DIR}"
+    run chown -R root "${NETDATA_PREFIX}/usr/libexec/netdata"
+    run find "${NETDATA_PREFIX}/usr/libexec/netdata" -type d -exec chmod 0755 {} \;
+    run find "${NETDATA_PREFIX}/usr/libexec/netdata" -type f -exec chmod 0644 {} \;
+    run find "${NETDATA_PREFIX}/usr/libexec/netdata" -type f -a -name \*.plugin -exec chmod 0755 {} \;
+    run find "${NETDATA_PREFIX}/usr/libexec/netdata" -type f -a -name \*.sh -exec chmod 0755 {} \;
+
+    setcap_ret=1
+    if ! iscontainer
         then
-        if [ "${x}" = "${NETDATA_WEB_DIR}" ]
+        if [ ! -z "${setcap}" ]
             then
-            run chown -R "${NETDATA_WEB_USER}:${NETDATA_WEB_GROUP}" "${x}" || echo >&2 "WARNING: Cannot change the ownership of the files in directory ${x} to ${NETDATA_WEB_USER}:${NETDATA_WEB_GROUP}..."
-        else
-            run chown -R "${NETDATA_USER}:${NETDATA_USER}" "${x}" || echo >&2 "WARNING: Cannot change the ownership of the files in directory ${x} to ${NETDATA_USER}..."
+            run setcap cap_dac_read_search,cap_sys_ptrace+ep "${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin"
+            setcap_ret=$?
         fi
-    fi
 
-    run chmod 0755 "${x}" || echo >&2 "WARNING: Cannot change the permissions of the directory ${x} to 0755..."
-done
+        if [ ${setcap_ret} -eq 0 ]
+            then
+            # if we managed to setcap
+            # but we fail to execute apps.plugin
+            # trigger setuid to root
+            "${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin" -v >/dev/null 2>&1
+            setcap_ret=$?
+        fi
+    fi
 
-if [ ${UID} -eq 0 ]
-    then
-    run chown root "${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin"
-    run chmod 0755 "${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin"
-    run setcap cap_dac_read_search,cap_sys_ptrace+ep "${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin"
-    if [ $? -ne 0 ]
+    if [ ${setcap_ret} -ne 0 ]
         then
         # fix apps.plugin to be setuid to root
         run chown root "${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin"
         run chmod 4755 "${NETDATA_PREFIX}/usr/libexec/netdata/plugins.d/apps.plugin"
     fi
+else
+    run chown "${NETDATA_USER}:${NETDATA_USER}" "${NETDATA_LOG_DIR}"
+    run chown -R "${NETDATA_USER}:${NETDATA_USER}" "${NETDATA_PREFIX}/usr/libexec/netdata"
+    run find "${NETDATA_PREFIX}/usr/libexec/netdata" -type f -exec chmod 0755 {} \;
+    run find "${NETDATA_PREFIX}/usr/libexec/netdata" -type d -exec chmod 0755 {} \;
 fi
 
+# --- fix #1292 bug ---
+
+[ -d "${NETDATA_PREFIX}/usr/libexec" ] && run chmod a+rX "${NETDATA_PREFIX}/usr/libexec"
+[ -d "${NETDATA_PREFIX}/usr/share/netdata" ] && run chmod a+rX "${NETDATA_PREFIX}/usr/share/netdata"
+
+
 # -----------------------------------------------------------------------------
 # check if we can re-start netdata
 
@@ -671,9 +903,10 @@ if [ ${DONOTSTART} -eq 1 ]
             then
             chown "${NETDATA_USER}" "${NETDATA_PREFIX}/etc/netdata/netdata.conf"
         fi
-        chmod 0664 "${NETDATA_PREFIX}/etc/netdata/netdata.conf"
+        chmod 0644 "${NETDATA_PREFIX}/etc/netdata/netdata.conf"
     fi
-    echo >&2 "OK. It is now installed and ready."
+    banner "is installed now!"
+    echo >&2 "  enjoy real-time performance and health monitoring..."
     exit 0
 fi
 
@@ -681,46 +914,52 @@ fi
 # stop a running netdata
 
 isnetdata() {
-    [ -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
+    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="$1" ret=0 count=0
+    local pid="${1}" ret=0 count=0
 
-    isnetdata $pid || return 0
+    isnetdata ${pid} || return 0
 
-    printf >&2 "Stopping netdata on pid $pid ..."
-    while [ ! -z "$pid" -a $ret -eq 0 ]
+    printf >&2 "Stopping netdata on pid ${pid} ..."
+    while [ ! -z "$pid" -a ${ret} -eq 0 ]
     do
-        if [ $count -gt 45 ]
+        if [ ${count} -gt 45 ]
             then
-            echo >&2 "Cannot stop the running netdata on pid $pid."
+            echo >&2 "Cannot stop the running netdata on pid ${pid}."
             return 1
         fi
 
         count=$(( count + 1 ))
 
-        run kill $pid 2>/dev/null
+        run kill ${pid} 2>/dev/null
         ret=$?
 
-        test $ret -eq 0 && printf >&2 "." && sleep 2
+        test ${ret} -eq 0 && printf >&2 "." && sleep 2
     done
 
     echo >&2
-    if [ $ret -eq 0 ]
+    if [ ${ret} -eq 0 ]
     then
-        echo >&2 "SORRY! CANNOT STOP netdata ON PID $pid !"
+        echo >&2 "SORRY! CANNOT STOP netdata ON PID ${pid} !"
         return 1
     fi
 
-    echo >&2 "netdata on pid $pid stopped."
+    echo >&2 "netdata on pid ${pid} stopped."
     return 0
 }
 
 stop_all_netdata() {
-    local p
+    local p myns ns
+
+    myns="$(readlink /proc/self/ns/pid 2>/dev/null)"
 
     echo >&2 "Stopping a (possibly) running netdata..."
 
@@ -729,27 +968,93 @@ stop_all_netdata() {
         $(cat /var/run/netdata/netdata.pid 2>/dev/null) \
         $(pidof netdata 2>/dev/null)
     do
-        stop_netdata_on_pid $p
+        ns="$(readlink /proc/${p}/ns/pid 2>/dev/null)"
+
+        if [ -z "${myns}" -o -z "${ns}" -o "${myns}" = "${ns}" ]
+            then
+            stop_netdata_on_pid ${p}
+        fi
     done
 }
 
 # -----------------------------------------------------------------------------
-# check netdata for systemd
+# check for systemd
 
 issystemd() {
+    local pids p myns ns systemctl
+
     # if the directory /etc/systemd/system does not exit, it is not systemd
     [ ! -d /etc/systemd/system ] && return 1
 
+    # if there is no systemctl command, it is not systemd
+    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 running, it is systemd
-    pidof systemd >/dev/null 2>&1 && 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
 }
 
+installed_init_d=0
+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}-${VERSION_ID}"
+
+    elif [ -f /etc/centos-release ]
+        then
+        key=$(</etc/centos-release)
+    fi
+
+    if [ -d /etc/init.d -a ! -f /etc/init.d/netdata ]
+        then
+        if [ "${key}" = "gentoo" ]
+            then
+            run cp system/netdata-openrc /etc/init.d/netdata && \
+            run chmod 755 /etc/init.d/netdata && \
+            run rc-update add netdata default && \
+            installed_init_d=1
+        
+        elif [ "${key}" = "ubuntu-12.04" -o "${key}" = "ubuntu-14.04" -o "${key}" = "debian-7" ]
+            then
+            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 && \
+            installed_init_d=1
+
+        elif [ "${key}" = "CentOS release 6.8 (Final)" -o "${key}" = "amzn-2016.09" ]
+            then
+            run cp system/netdata-init-d /etc/init.d/netdata && \
+            run chmod 755 /etc/init.d/netdata && \
+            run chkconfig netdata on && \
+            installed_init_d=1
+        fi
+    fi
+
+    return 0
+}
+
 started=0
 if [ "${UID}" -eq 0 ]
     then
@@ -770,6 +1075,8 @@ if [ "${UID}" -eq 0 ]
 
         stop_all_netdata
         service netdata restart && started=1
+    else
+        install_non_systemd_init
     fi
 
     if [ ${started} -eq 0 ]
@@ -828,13 +1135,13 @@ if [ ! -s "${NETDATA_PREFIX}/etc/netdata/netdata.conf" ]
     ret=$?
 
     # try curl
-    if [ $ret -ne 0 -o ! -s "${NETDATA_PREFIX}/etc/netdata/netdata.conf.new" ]
+    if [ ${ret} -ne 0 -o ! -s "${NETDATA_PREFIX}/etc/netdata/netdata.conf.new" ]
         then
         curl -s -o "${NETDATA_PREFIX}/etc/netdata/netdata.conf.new" "http://localhost:${NETDATA_PORT}/netdata.conf"
         ret=$?
     fi
 
-    if [ $ret -eq 0 -a -s "${NETDATA_PREFIX}/etc/netdata/netdata.conf.new" ]
+    if [ ${ret} -eq 0 -a -s "${NETDATA_PREFIX}/etc/netdata/netdata.conf.new" ]
         then
         mv "${NETDATA_PREFIX}/etc/netdata/netdata.conf.new" "${NETDATA_PREFIX}/etc/netdata/netdata.conf"
         echo >&2 "New configuration saved for you to edit at ${NETDATA_PREFIX}/etc/netdata/netdata.conf"
@@ -1014,6 +1321,12 @@ if [ -f /etc/systemd/system/netdata.service ]
     rm -i /etc/systemd/system/netdata.service
 fi
 
+if [ -f /etc/init.d/netdata ]
+    then
+    echo "Deleting /etc/init.d/netdata ..."
+    rm -i /etc/init.d/netdata
+fi
+
 getent passwd netdata > /dev/null
 if [ $? -eq 0 ]
     then
@@ -1041,6 +1354,34 @@ if [ $? -eq 0 -a "${NETDATA_ADDED_TO_DOCKER}" = "1" ]
     echo "   gpasswd -d netdata docker"
 fi
 
+getent group nginx > /dev/null
+if [ $? -eq 0 -a "${NETDATA_ADDED_TO_NGINX}" = "1" ]
+    then
+    echo
+    echo "You may also want to remove the netdata user from the nginx group"
+    echo "by running:"
+    echo "   gpasswd -d netdata nginx"
+fi
+
+getent group varnish > /dev/null
+if [ $? -eq 0 -a "${NETDATA_ADDED_TO_VARNISH}" = "1" ]
+    then
+    echo
+    echo "You may also want to remove the netdata user from the varnish group"
+    echo "by running:"
+    echo "   gpasswd -d netdata varnish"
+fi
+
+getent group haproxy > /dev/null
+if [ $? -eq 0 -a "${NETDATA_ADDED_TO_HAPROXY}" = "1" ]
+    then
+    echo
+    echo "You may also want to remove the netdata user from the haproxy group"
+    echo "by running:"
+    echo "   gpasswd -d netdata haproxy"
+fi
+
+
 UNINSTALL
 chmod 750 netdata-uninstaller.sh
 
@@ -1069,83 +1410,113 @@ To start it, just run it:
   ${NETDATA_PREFIX}/usr/sbin/netdata
 
 
-Enjoy!
-
 END
 echo >&2 "Uninstall script generated: ./netdata-uninstaller.sh"
 
-cat >netdata-updater.sh.new <<REINSTALL
+if [ -d .git ]
+    then
+    cat >netdata-updater.sh.new <<REINSTALL
 #!/usr/bin/env bash
 
+force=0
+[ "\${1}" = "-f" ] && force=1
+
 export PATH="\${PATH}:${PATH}"
 export CFLAGS="${CFLAGS}"
 
-LAST_UID="${UID}"
-if [ "\${LAST_UID}" != "\${UID}" ]
+INSTALL_UID="${UID}"
+if [ "\${INSTALL_UID}" != "\${UID}" ]
     then
-    echo >&2 "This script should be run as user with uid \${LAST_UID} but it now runs with uid \${UID}"
+    echo >&2 "This script should be run as user with uid \${INSTALL_UID} but it now runs with uid \${UID}"
     exit 1
 fi
 
 # make sure we cd to the working directory
 cd "${REINSTALL_PWD}" || exit 1
 
+# make sure there is .git here
+[ \${force} -eq 0 -a ! -d .git ] && echo >&2 "No git structures found at: ${REINSTALL_PWD} (use -f for force re-install)" && exit 1
+
 # signal netdata to start saving its database
 # this is handy if your database is big
 pids=\$(pidof netdata)
 [ ! -z "\${pids}" ] && kill -USR1 \${pids}
 
+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.log)
+    # open fd 3 and send it to tmp
+    exec 3>\${tmp}
+fi
+
+info() {
+    echo >&3 "\$(date) : INFO: " "\${@}"
+}
+
+emptyline() {
+    echo >&3
+}
+
+error() {
+    echo >&3 "\$(date) : ERROR: " "\${@}"
+}
+
 # this is what we will do if it fails (head-less only)
 failed() {
-  echo >&2 "\$(date) : FAILED TO UPDATE NETDATA : \${1}"
-  cat >&2 "\${tmp}"
-  rm "\${tmp}"
-  exit 1
+    error "FAILED TO UPDATE NETDATA : \${1}"
+
+    if [ ! -z "\${tmp}" ]
+    then
+        cat >&2 "\${tmp}"
+        rm "\${tmp}"
+    fi
+    exit 1
 }
 
 get_latest_commit_id() {
-    git log | grep ^commit | head -n 1 | cut -d ' ' -f 2
+    git log -1           2>&3 |\\
+        grep ^commit     2>&3 |\\
+        head -n 1        2>&3 |\\
+        cut -d ' ' -f 2  2>&3
 }
 
-last_commit="\$(get_latest_commit_id)"
-[ -z "\${last_commit}" ] && failed "CANNOT GET LAST COMMIT ID"
-
 update() {
-    if [ -t 1 -a -t 2 ]
-        then
-        # running on a terminal
-        echo >&2 "Running on a terminal - (this script also supports running headless from crontab)"
+    [ -z "\${tmp}" ] && info "Running on a terminal - (this script also supports running headless from crontab)"
 
-        echo >&2
-        echo >&2 "Updating source..."
-        git pull || exit 1
-        new_commit="\$(get_latest_commit_id)"
-        [ -z "\${new_commit}" ] && echo >&2 "CANNOT GET NEW LAST COMMIT ID" && exit 1
-        [ "\${new_commit}" = "\${last_commit}" ] && echo >&2 "Nothing to be done!" && exit 0
+    emptyline
 
-        echo >&2
-        echo >&2 "re-installing..."
-        ${REINSTALL_COMMAND// --dont-wait/} --dont-wait || exit 1
+    if [ -d .git ]
+        then
+        info "Updating netdata source from github..."
 
-    else
-        # running head-less
-        # do not generate any output, unless we fail
+        last_commit="\$(get_latest_commit_id)"
+        [ \${force} -eq 0 -a -z "\${last_commit}" ] && failed "CANNOT GET LAST COMMIT ID (use -f for force re-install)"
 
-        # create a temporary file for the log
-        tmp=\$(mktemp /tmp/netdata-updater-log-XXXXXX.log)
+        git pull >&3 2>&3 || failed "CANNOT FETCH LATEST SOURCE (use -f for force re-install)"
 
-        # update source from git
-        git pull >>"\${tmp}" 2>&1 || failed "CANNOT FETCH LATEST SOURCE"
         new_commit="\$(get_latest_commit_id)"
-        [ -z "\${new_commit}" ] && failed "CANNOT GET NEW LAST COMMIT ID"
-        [ "\${new_commit}" = "\${last_commit}" ] && exit 0
-
-        # install the latest version
-        ${REINSTALL_COMMAND// --dont-wait/} --dont-wait >>"\${tmp}" 2>&1 || failed "CANNOT BUILD AND INSTALL NETDATA"
-
-        rm "\${tmp}"
+        if [ \${force} -eq 0 ]
+            then
+            [ -z "\${new_commit}" ] && failed "CANNOT GET NEW LAST COMMIT ID (use -f for force re-install)"
+            [ "\${new_commit}" = "\${last_commit}" ] && info "Nothing to be done! (use -f to force re-install)" && exit 0
+        fi
+    elif [ \${force} -eq 0 ]
+        then
+        failed "CANNOT FIND GIT STRUCTURES IN \$(pwd) (use -f for force re-install)"
     fi
 
+    emptyline
+    info "Re-installing netdata..."
+    ${REINSTALL_COMMAND// --dont-wait/} --dont-wait >&3 2>&3 || failed "FAILED TO COMPILE/INSTALL NETDATA"
+
+    [ ! -z "\${tmp}" ] && rm "\${tmp}" && tmp=
     return 0
 }
 
@@ -1154,6 +1525,15 @@ update && exit 0
 ###############################################################################
 ###############################################################################
 REINSTALL
-chmod 755 netdata-updater.sh.new
-mv -f netdata-updater.sh.new netdata-updater.sh
-echo >&2 "Update script generated   : ./netdata-updater.sh"
+    chmod 755 netdata-updater.sh.new
+    mv -f netdata-updater.sh.new netdata-updater.sh
+    echo >&2 "Update script generated   : ./netdata-updater.sh"
+elif [ -f "netdata-updater.sh" ]
+    then
+    rm "netdata-updater.sh"
+fi
+
+banner "is installed and running now!"
+echo >&2 "  enjoy real-time performance and health monitoring..."
+echo >&2 
+exit 0