Imported Upstream version 1.3.0+dfsgupstream/1.3.0+dfsg

1 files changed, 418 insertions, 371 deletions

diff --git a/plugins.d/charts.d.plugin b/plugins.d/charts.d.plugin
index 2824fa3c6..9aaadc168 100755
--- a/plugins.d/charts.d.plugin
+++ b/plugins.d/charts.d.plugin
@@ -1,4 +1,4 @@
-#!/bin/bash
+#!/usr/bin/env bash
 
 PROGRAM_FILE="$0"
 PROGRAM_NAME="$(basename $0)"
@@ -14,24 +14,24 @@ echo >&2 "$PROGRAM_NAME: started from '$PROGRAM_FILE' with options: $*"
 
 if [ $(( ${BASH_VERSINFO[0]} )) -lt 4 ]
 then
-	echo >&2
-	echo >&2 "$PROGRAM_NAME: ERROR"
-	echo >&2 "BASH version 4 or later is required."
-	echo >&2 "You are running version: ${BASH_VERSION}"
-	echo >&2 "Please upgrade."
-	echo >&2
-	exit 1
+    echo >&2
+    echo >&2 "$PROGRAM_NAME: ERROR"
+    echo >&2 "BASH version 4 or later is required."
+    echo >&2 "You are running version: ${BASH_VERSION}"
+    echo >&2 "Please upgrade."
+    echo >&2
+    exit 1
 fi
 
 # check a few commands
 require_cmd() {
-	which "$1" >/dev/null
-	if [ $? -ne 0 ]
-		then
-		echo >&2 "$PROGRAM_NAME: ERROR: Command '$1' is not found in the system path."
-		return 1
-	fi
-	return 0
+    which "$1" >/dev/null
+    if [ $? -ne 0 ]
+        then
+        echo >&2 "$PROGRAM_NAME: ERROR: Command '$1' is not found in the system path."
+        return 1
+    fi
+    return 0
 }
 
 require_cmd date || exit 1
@@ -61,7 +61,7 @@ chartsd="$pluginsd/../charts.d"
 myconfig="$confd/$PROGRAM_NAME.conf"
 
 minimum_update_frequency="${NETDATA_UPDATE_EVERY-1}"
-update_every=${minimum_update_frequency}	# this will be overwritten by the command line
+update_every=${minimum_update_frequency}    # this will be overwritten by the command line
 
 # work around for non BASH shells
 charts_create="_create"
@@ -106,50 +106,50 @@ check=0
 chart_only=
 while [ ! -z "$1" ]
 do
-	if [ "$1" = "check" ]
-	then
-		check=1
-		shift
-		continue
-	fi
-
-	if [ "$1" = "debug" -o "$1" = "all" ]
-	then
-		debug=1
-		shift
-		continue
-	fi
-
-	if [ -f "$chartsd/$1.chart.sh" ]
-	then
-		debug=1
-		chart_only="$( echo $1.chart.sh | sed "s/\.chart\.sh$//g" )"
-		shift
-		continue
-	fi
-
-	if [ -f "$chartsd/$1" ]
-	then
-		debug=1
-		chart_only="$( echo $1 | sed "s/\.chart\.sh$//g" )"
-		shift
-		continue
-	fi
-
-	# number check
-	n="$1"
-	x=$(( n ))
-	if [ "$x" = "$n" ]
-	then
-		shift
-		update_every=$x
-		[ $update_every -lt $minimum_update_frequency ] && update_every=$minimum_update_frequency
-		continue
-	fi
-
-	echo >&2 "Cannot understand parameter $1. Aborting."
-	echo "DISABLE"
-	exit 1
+    if [ "$1" = "check" ]
+    then
+        check=1
+        shift
+        continue
+    fi
+
+    if [ "$1" = "debug" -o "$1" = "all" ]
+    then
+        debug=1
+        shift
+        continue
+    fi
+
+    if [ -f "$chartsd/$1.chart.sh" ]
+    then
+        debug=1
+        chart_only="$( echo $1.chart.sh | sed "s/\.chart\.sh$//g" )"
+        shift
+        continue
+    fi
+
+    if [ -f "$chartsd/$1" ]
+    then
+        debug=1
+        chart_only="$( echo $1 | sed "s/\.chart\.sh$//g" )"
+        shift
+        continue
+    fi
+
+    # number check
+    n="$1"
+    x=$(( n ))
+    if [ "$x" = "$n" ]
+    then
+        shift
+        update_every=$x
+        [ $update_every -lt $minimum_update_frequency ] && update_every=$minimum_update_frequency
+        continue
+    fi
+
+    echo >&2 "Cannot understand parameter $1. Aborting."
+    echo "DISABLE"
+    exit 1
 done
 
 
@@ -157,26 +157,26 @@ done
 # load my configuration
 
 if [ -f "$myconfig" ]
-	then
-	. "$myconfig"
-	if [ $? -ne 0 ]
-	then
-		echo >&2 "$PROGRAM_NAME: cannot load $myconfig"
-		echo "DISABLE"
-		exit 1
-	fi
-	time_divisor=$((time_divisor))
-	[ $time_divisor -lt 10 ] && time_divisor=10
-	[ $time_divisor -gt 100 ] && time_divisor=100
+    then
+    . "$myconfig"
+    if [ $? -ne 0 ]
+    then
+        echo >&2 "$PROGRAM_NAME: cannot load $myconfig"
+        echo "DISABLE"
+        exit 1
+    fi
+    time_divisor=$((time_divisor))
+    [ $time_divisor -lt 10 ] && time_divisor=10
+    [ $time_divisor -gt 100 ] && time_divisor=100
 else
-	echo >&2 "$PROGRAM_NAME: configuration file '$myconfig' not found. Using defaults."
+    echo >&2 "$PROGRAM_NAME: configuration file '$myconfig' not found. Using defaults."
 fi
 
 if [ "$pause_method" = "suspend" ]
 then
-	# enable bash job control
-	# this is required for suspend to work
-	set -m
+    # enable bash job control
+    # this is required for suspend to work
+    set -m
 fi
 
 # we check for the timeout command, after we load our
@@ -185,22 +185,22 @@ fi
 # can emulate the timeout command we need:
 # > timeout SECONDS command ...
 if [ $check_for_timeout -eq 1 ]
-	then
-	require_cmd timeout || exit 1
+    then
+    require_cmd timeout || exit 1
 fi
 
 # -----------------------------------------------------------------------------
 # internal checks
 
 # netdata passes the requested update frequency as the first argument
-update_every=$(( update_every + 1 - 1))	# makes sure it is a number
+update_every=$(( update_every + 1 - 1)) # makes sure it is a number
 test $update_every -eq 0 && update_every=1 # if it is zero, make it 1
 
 # check the charts.d directory
 if [ ! -d "$chartsd" ]
-	then
-	echo >&2 "$PROGRAM_NAME: cannot find charts directory '$chartsd'"
-	echo "DISABLE"
+    then
+    echo >&2 "$PROGRAM_NAME: cannot find charts directory '$chartsd'"
+    echo "DISABLE"
 fi
 
 
@@ -210,13 +210,13 @@ fi
 # default sleep function
 LOOPSLEEPMS_HIGHRES=0
 loopsleepms() {
-	[ "$1" = "tellwork" ] && shift
-	sleep $1
+    [ "$1" = "tellwork" ] && shift
+    sleep $1
 }
 
 now_ms=
 current_time_ms() {
-	now_ms="$(date +'%s')000"
+    now_ms="$(date +'%s')000"
 }
 
 # if found and included, this file overwrites loopsleepms()
@@ -229,10 +229,10 @@ current_time_ms() {
 # library functions
 
 fixid() {
-	echo "$*" |\
-		tr -c "[A-Z][a-z][0-9]" "_" |\
-		sed -e "s|^_\+||g" -e "s|_\+$||g" -e "s|_\+|_|g" |\
-		tr "[A-Z]" "[a-z]"
+    echo "$*" |\
+        tr -c "[A-Z][a-z][0-9]" "_" |\
+        sed -e "s|^_\+||g" -e "s|_\+$||g" -e "s|_\+|_|g" |\
+        tr "[A-Z]" "[a-z]"
 }
 
 # convert any floating point number
@@ -241,57 +241,57 @@ fixid() {
 # so that no fork is necessary
 # the multiplier must be a power of 10
 float2int() {
-	local f m="$2" a b l v=($1)
-	f=${v[0]}
-
-	# echo >&2 "value='${1}' f='${f}', m='${m}'"
-
-	# the length of the multiplier - 1
-	l=$(( ${#m} - 1 ))
-
-	# check if the number is in scientific notation
-	if [[ ${f} =~ ^[[:space:]]*(-)?[0-9.]+(e|E)(\+|-)[0-9]+ ]]
-		then
-		# convert it to decimal
-		# unfortunately, this fork cannot be avoided
-		# if you know of a way to avoid it, please let me know
-		f=$(printf "%0.${l}f" ${f})
-	fi
-
-	# split the floating point number
-	# in integer (a) and decimal (b)
-	a=${f/.*/}
-	b=${f/*./}
-
-	# if the integer part is missing
-	# set it to zero
-	[ -z "${a}" ] && a="0"
-
-	# strip leading zeros from the integer part
-	# base 10 convertion
-	a=$((10#$a))
-
-	# check the length of the decimal part
-	# against the length of the multiplier
-	if [ ${#b} -gt ${l} ]
-		then
-		# too many digits - take the most significant
-		b=${b:0:${l}}
-
-	elif [ ${#b} -lt ${l} ]
-		then
-		# too few digits - pad with zero on the right
-		local z="00000000000000000000000" r=$((l - ${#b}))
-		b="${b}${z:0:${r}}"
-	fi
-
-	# strip leading zeros from the decimal part
-	# base 10 convertion
-	b=$((10#$b))
-
-	# store the result
-	FLOAT2INT_RESULT=$(( (a * m) + b ))
-	#echo >&2 "FLOAT2INT_RESULT='${FLOAT2INT_RESULT}'"
+    local f m="$2" a b l v=($1)
+    f=${v[0]}
+
+    # echo >&2 "value='${1}' f='${f}', m='${m}'"
+
+    # the length of the multiplier - 1
+    l=$(( ${#m} - 1 ))
+
+    # check if the number is in scientific notation
+    if [[ ${f} =~ ^[[:space:]]*(-)?[0-9.]+(e|E)(\+|-)[0-9]+ ]]
+        then
+        # convert it to decimal
+        # unfortunately, this fork cannot be avoided
+        # if you know of a way to avoid it, please let me know
+        f=$(printf "%0.${l}f" ${f})
+    fi
+
+    # split the floating point number
+    # in integer (a) and decimal (b)
+    a=${f/.*/}
+    b=${f/*./}
+
+    # if the integer part is missing
+    # set it to zero
+    [ -z "${a}" ] && a="0"
+
+    # strip leading zeros from the integer part
+    # base 10 convertion
+    a=$((10#$a))
+
+    # check the length of the decimal part
+    # against the length of the multiplier
+    if [ ${#b} -gt ${l} ]
+        then
+        # too many digits - take the most significant
+        b=${b:0:${l}}
+
+    elif [ ${#b} -lt ${l} ]
+        then
+        # too few digits - pad with zero on the right
+        local z="00000000000000000000000" r=$((l - ${#b}))
+        b="${b}${z:0:${r}}"
+    fi
+
+    # strip leading zeros from the decimal part
+    # base 10 convertion
+    b=$((10#$b))
+
+    # store the result
+    FLOAT2INT_RESULT=$(( (a * m) + b ))
+    #echo >&2 "FLOAT2INT_RESULT='${FLOAT2INT_RESULT}'"
 }
 
 
@@ -299,84 +299,105 @@ float2int() {
 # charts check functions
 
 all_charts() {
-	cd "$chartsd"
-	[ $? -ne 0 ] && echo >&2 "$PROGRAM_NAME: Cannot cd to $chartsd" && return 1
+    cd "$chartsd"
+    [ $? -ne 0 ] && echo >&2 "$PROGRAM_NAME: Cannot cd to $chartsd" && return 1
 
-	ls *.chart.sh | sed "s/\.chart\.sh$//g"
+    ls *.chart.sh | sed "s/\.chart\.sh$//g"
 }
 
+declare -A charts_enable_keyword=(
+          ['apache']="force"
+        ['cpu_apps']="force"
+         ['cpufreq']="force"
+         ['example']="force"
+            ['exim']="force"
+         ['hddtemp']="force"
+    ['load_average']="force"
+        ['mem_apps']="force"
+           ['mysql']="force"
+           ['nginx']="force"
+          ['phpfpm']="force"
+         ['postfix']="force"
+         ['sensors']="force"
+           ['squid']="force"
+          ['tomcat']="force"
+    )
+
 all_enabled_charts() {
-	local charts= enabled=
-
-	# find all enabled charts
-
-	for chart in $( all_charts )
-	do
-		eval "enabled=\$$chart"
-		if [ -z "${enabled}" ]
-			then
-			enabled="${enable_all_charts}"
-		fi
-
-		if [ ! "${enabled}" = "yes" ]
-		then
-			echo >&2 "$PROGRAM_NAME: '$chart' is NOT enabled. Add a line with $chart=yes in $myconfig to enable it (or remove the line that disables it)."
-		else
-			[ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: '$chart' is enabled."
-			local charts="$charts $chart"
-		fi
-	done
-
-	local charts2=
-	for chart in $charts
-	do
-		# check the enabled charts
-		local check="$( cat "$chartsd/$chart.chart.sh" | sed "s/^ \+//g" | grep "^$chart$charts_check()" )"
-		if [ -z "$check" ]
-		then
-			echo >&2 "$PROGRAM_NAME: chart '$chart' does not seem to have a $chart$charts_check() function. Disabling it."
-			continue
-		fi
-
-		local create="$( cat "$chartsd/$chart.chart.sh" | sed "s/^ \+//g" | grep "^$chart$charts_create()" )"
-		if [ -z "$create" ]
-		then
-			echo >&2 "$PROGRAM_NAME: chart '$chart' does not seem to have a $chart$charts_create() function. Disabling it."
-			continue
-		fi
-
-		local update="$( cat "$chartsd/$chart.chart.sh" | sed "s/^ \+//g" | grep "^$chart$charts_update()" )"
-		if [ -z "$update" ]
-		then
-			echo >&2 "$PROGRAM_NAME: chart '$chart' does not seem to have a $chart$charts_update() function. Disabling it."
-			continue
-		fi
-
-		# check its config
-		#if [ -f "$confd/$chart.conf" ]
-		#then
-		#	if [ ! -z "$( cat "$confd/$chart.conf" | sed "s/^ \+//g" | grep -v "^$" | grep -v "^#" | grep -v "^$chart$charts_undescore" )" ]
-		#	then
-		#		echo >&2 "$PROGRAM_NAME: chart's $chart config $confd/$chart.conf should only have lines starting with $chart$charts_undescore . Disabling it."
-		#		continue
-		#	fi
-		#fi
-
-		#if [ $dryrunner -eq 1 ]
-		#	then
-		#	"$pluginsd/charts.d.dryrun-helper.sh" "$chart" "$chartsd/$chart.chart.sh" "$confd/$chart.conf" >/dev/null
-		#	if [ $? -ne 0 ]
-		#	then
-		#		echo >&2 "$PROGRAM_NAME: chart's $chart did not pass the dry run check. This means it uses global variables not starting with $chart. Disabling it."
-		#		continue
-		#	fi
-		#fi
-
-		local charts2="$charts2 $chart"
-	done
-
-	echo $charts2
-	[ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: enabled charts: $charts2"
+    local charts= enabled= required=
+
+    # find all enabled charts
+
+    for chart in $( all_charts )
+    do
+        eval "enabled=\$$chart"
+        if [ -z "${enabled}" ]
+            then
+            enabled="${enable_all_charts}"
+        fi
+
+        required="${charts_enable_keyword[${chart}]}"
+        [ -z "${required}" ] && required="yes"
+
+        if [ ! "${enabled}" = "${required}" ]
+        then
+            echo >&2 "$PROGRAM_NAME: '$chart' is NOT enabled. Add a line with $chart=$required in $myconfig to enable it (or remove the line that disables it)."
+        else
+            [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: '$chart' is enabled."
+            local charts="$charts $chart"
+        fi
+    done
+
+    local charts2=
+    for chart in $charts
+    do
+        # check the enabled charts
+        local check="$( cat "$chartsd/$chart.chart.sh" | sed "s/^ \+//g" | grep "^$chart$charts_check()" )"
+        if [ -z "$check" ]
+        then
+            echo >&2 "$PROGRAM_NAME: chart '$chart' does not seem to have a $chart$charts_check() function. Disabling it."
+            continue
+        fi
+
+        local create="$( cat "$chartsd/$chart.chart.sh" | sed "s/^ \+//g" | grep "^$chart$charts_create()" )"
+        if [ -z "$create" ]
+        then
+            echo >&2 "$PROGRAM_NAME: chart '$chart' does not seem to have a $chart$charts_create() function. Disabling it."
+            continue
+        fi
+
+        local update="$( cat "$chartsd/$chart.chart.sh" | sed "s/^ \+//g" | grep "^$chart$charts_update()" )"
+        if [ -z "$update" ]
+        then
+            echo >&2 "$PROGRAM_NAME: chart '$chart' does not seem to have a $chart$charts_update() function. Disabling it."
+            continue
+        fi
+
+        # check its config
+        #if [ -f "$confd/$chart.conf" ]
+        #then
+        #   if [ ! -z "$( cat "$confd/$chart.conf" | sed "s/^ \+//g" | grep -v "^$" | grep -v "^#" | grep -v "^$chart$charts_undescore" )" ]
+        #   then
+        #       echo >&2 "$PROGRAM_NAME: chart's $chart config $confd/$chart.conf should only have lines starting with $chart$charts_undescore . Disabling it."
+        #       continue
+        #   fi
+        #fi
+
+        #if [ $dryrunner -eq 1 ]
+        #   then
+        #   "$pluginsd/charts.d.dryrun-helper.sh" "$chart" "$chartsd/$chart.chart.sh" "$confd/$chart.conf" >/dev/null
+        #   if [ $? -ne 0 ]
+        #   then
+        #       echo >&2 "$PROGRAM_NAME: chart's $chart did not pass the dry run check. This means it uses global variables not starting with $chart. Disabling it."
+        #       continue
+        #   fi
+        #fi
+
+        local charts2="$charts2 $chart"
+    done
+
+    echo $charts2
+    [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: enabled charts: $charts2"
 }
 
 
@@ -387,32 +408,36 @@ suffix_update_every="_update_every"
 active_charts=
 for chart in $( all_enabled_charts )
 do
-	[ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: loading chart: '$chartsd/$chart.chart.sh'"
-	. "$chartsd/$chart.chart.sh"
-
-	if [ -f "$confd/$chart.conf" ]
-	then
-		[ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: loading chart options: '$confd/$chart.conf'"
-		. "$confd/$chart.conf"
-	else
-		echo >&2 "$PROGRAM_NAME: $chart: configuration file '$confd/$chart.conf' not found. Using defaults."
-	fi
-
-	eval "dt=\$$chart$suffix_update_every"
-	dt=$(( dt + 1 - 1 )) # make sure it is a number
-	if [ $dt -lt $update_every ]
-	then
-		eval "$chart$suffix_update_every=$update_every"
-	fi
-
-	$chart$charts_check
-	if [ $? -eq 0 ]
-	then
-		[ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: '$chart' activated"
-		active_charts="$active_charts $chart"
-	else
-		echo >&2 "$PROGRAM_NAME: chart '$chart' check() function reports failure."
-	fi
+    [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: loading chart: '$chartsd/$chart.chart.sh'"
+    . "$chartsd/$chart.chart.sh"
+
+    if [ -f "$confd/charts.d/$chart.conf" ]
+    then
+        [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: loading chart options: '$confd/charts.d/$chart.conf'"
+        . "$confd/charts.d/$chart.conf"
+    elif [ -f "$confd/$chart.conf" ]
+    then
+        [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: loading chart options: '$confd/$chart.conf'"
+        . "$confd/$chart.conf"
+    else
+        echo >&2 "$PROGRAM_NAME: $chart: configuration file '$confd/charts.d/$chart.conf' not found. Using defaults."
+    fi
+
+    eval "dt=\$$chart$suffix_update_every"
+    dt=$(( dt + 1 - 1 )) # make sure it is a number
+    if [ $dt -lt $update_every ]
+    then
+        eval "$chart$suffix_update_every=$update_every"
+    fi
+
+    $chart$charts_check
+    if [ $? -eq 0 ]
+    then
+        [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: '$chart' activated"
+        active_charts="$active_charts $chart"
+    else
+        echo >&2 "$PROGRAM_NAME: chart '$chart' check() function reports failure."
+    fi
 done
 [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: activated charts: $active_charts"
 
@@ -427,26 +452,26 @@ test $debug -eq 1 && debug_time=tellwork
 # if we only need a specific chart, remove all the others
 if [ ! -z "${chart_only}" ]
 then
-	[ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: requested to run only for: '${chart_only}'"
-	check_charts=
-	for chart in $active_charts
-	do
-		if [ "$chart" = "$chart_only" ]
-		then
-			check_charts="$chart"
-			break
-		fi
-	done
-	active_charts="$check_charts"
+    [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: requested to run only for: '${chart_only}'"
+    check_charts=
+    for chart in $active_charts
+    do
+        if [ "$chart" = "$chart_only" ]
+        then
+            check_charts="$chart"
+            break
+        fi
+    done
+    active_charts="$check_charts"
 fi
 [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: activated charts: $active_charts"
 
 # stop if we just need a pre-check
 if [ $check -eq 1 ]
 then
-	echo >&2 "CHECK RESULT"
-	echo >&2 "Will run the charts: $active_charts"
-	exit 0
+    echo >&2 "CHECK RESULT"
+    echo >&2 "Will run the charts: $active_charts"
+    exit 0
 fi
 
 # -----------------------------------------------------------------------------
@@ -454,13 +479,13 @@ fi
 
 TMP_DIR=
 chartsd_cleanup() {
-	cd /tmp
-	if [ ! -z "$TMP_DIR" -a -d "$TMP_DIR" ]
-	then
-		[ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: cleaning up temporary directory $TMP_DIR ..."
-		rm -rf "$TMP_DIR"
-	fi
-	exit 0
+    cd /tmp
+    if [ ! -z "$TMP_DIR" -a -d "$TMP_DIR" ]
+    then
+        [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: cleaning up temporary directory $TMP_DIR ..."
+        rm -rf "$TMP_DIR"
+    fi
+    exit 0
 }
 trap chartsd_cleanup EXIT
 trap chartsd_cleanup SIGHUP
@@ -468,9 +493,9 @@ trap chartsd_cleanup INT
 
 if [ $UID = "0" ]
 then
-	TMP_DIR="$( mktemp -d /var/run/netdata-${PROGRAM_NAME}-XXXXXXXXXX )"
+    TMP_DIR="$( mktemp -d /var/run/netdata-${PROGRAM_NAME}-XXXXXXXXXX )"
 else
-	TMP_DIR="$( mktemp -d /tmp/.netdata-${PROGRAM_NAME}-XXXXXXXXXX )"
+    TMP_DIR="$( mktemp -d /tmp/.netdata-${PROGRAM_NAME}-XXXXXXXXXX )"
 fi
 
 cd "$TMP_DIR" || exit 1
@@ -481,15 +506,15 @@ cd "$TMP_DIR" || exit 1
 run_charts=
 for chart in $active_charts
 do
-	[ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: Calling '$chart$charts_create()'..."
-	$chart$charts_create
-	if [ $? -eq 0 ]
-	then
-		run_charts="$run_charts $chart"
-		[ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: '$chart' has initialized."
-	else
-		echo >&2 "$PROGRAM_NAME: chart '$chart' function '$chart$charts_create()' reports failure."
-	fi
+    [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: Calling '$chart$charts_create()'..."
+    $chart$charts_create
+    if [ $? -eq 0 ]
+    then
+        run_charts="$run_charts $chart"
+        [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: '$chart' has initialized."
+    else
+        echo >&2 "$PROGRAM_NAME: chart '$chart' function '$chart$charts_create()' reports failure."
+    fi
 done
 [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: run_charts='$run_charts'"
 
@@ -498,109 +523,131 @@ done
 # update dimensions
 
 if [ -z "$run_charts" ]
-	then
-	echo >&2 "$PROGRAM_NAME: No charts to collect data from."
-	echo "DISABLE"
-	exit 1
+    then
+    echo >&2 "$PROGRAM_NAME: No charts to collect data from."
+    echo "DISABLE"
+    exit 1
 fi
 
-declare -A charts_last_update=() charts_update_every=() charts_next_update=() charts_run_counter=()
+declare -A charts_last_update=() charts_update_every=() charts_next_update=() charts_run_counter=() charts_serial_failures=()
 global_update() {
-	local exit_at \
-		c=0 dt ret last_ms exec_start_ms exec_end_ms \
-		chart now_charts=() next_charts=($run_charts)
-
-	# return the current time in ms in $now_ms
-	current_time_ms
-
-	exit_at=$(( now_ms + (restart_timeout * 1000) ))
-
-	for chart in $run_charts
-	do
-		eval "charts_update_every[$chart]=\$$chart$suffix_update_every"
-		test -z "${charts_update_every[$chart]}" && charts_update_every[$charts]=$update_every
-		charts_last_update[$chart]=$((now_ms - (now_ms % (charts_update_every[$chart] * 1000) ) ))
-		charts_next_update[$chart]=$(( charts_last_update[$chart] + (charts_update_every[$chart] * 1000) ))
-		charts_run_counter[$chart]=0
-
-		echo "CHART netdata.plugin_chartsd_$chart '' 'Execution time for $chart plugin' 'milliseconds / run' charts.d netdata.plugin_charts area 145000 ${charts_update_every[$chart]}"
-		echo "DIMENSION run_time 'run time' absolute 1 1"
-	done
-
-	# the main loop
-	while [ 1 ]
-	do
-		c=$((c + 1))
-		now_charts=("${next_charts[@]}")
-		next_charts=()
-
-		# return the current time in ms in $now_ms
-		current_time_ms
-
-		for chart in "${now_charts[@]}"
-		do
-			# echo >&2 "DEBUG: chart: $chart last: ${charts_last_update[$chart]}, next: ${charts_next_update[$chart]}, now: ${now_ms}"
-			if [ ${now_ms} -ge ${charts_next_update[$chart]} ]
-			then
-				last_ms=${charts_last_update[$chart]}
-				dt=$(( (now_ms - last_ms) ))
-				# echo >&2 "DEBUG: chart: $chart last: ${charts_last_update[$chart]}, next: ${charts_next_update[$chart]}, now: ${now_ms}, dt: ${dt}"
-
-				charts_last_update[$chart]=${now_ms}
-
-				while [ ${charts_next_update[$chart]} -lt ${now_ms} ]
-				do
-					charts_next_update[$chart]=$(( charts_next_update[$chart] + (charts_update_every[$chart] * 1000) ))
-				done
-
-				# the first call should not give a duration
-				# so that netdata calibrates to current time
-				dt=$(( dt * 1000 ))
-				charts_run_counter[$chart]=$(( charts_run_counter[$chart] + 1 ))
-				if [ ${charts_run_counter[$chart]} -eq 1 ]
-					then
-					dt=
-				fi
-
-				exec_start_ms=$now_ms
-				$chart$charts_update $dt
-				ret=$?
-				
-				# return the current time in ms in $now_ms
-				current_time_ms; exec_end_ms=$now_ms
-
-				echo "BEGIN netdata.plugin_chartsd_$chart $dt"
-				if [ $ret -eq 0 ]
-				then
-					echo "SET run_time = $(( exec_end_ms - exec_start_ms ))"
-					next_charts+=($chart)
-				else
-					echo "SET run_time = $(( (exec_end_ms - exec_start_ms) * -1 ))"
-					echo >&2 "$PROGRAM_NAME: chart '$chart' update() function reports failure. Disabling it."
-				fi
-				echo "END"
-			else
-				next_charts+=($chart)
-			fi
-		done
-
-		if [ "$pause_method" = "suspend" ]
-		then
-			echo "STOPPING_WAKE_ME_UP_PLEASE"
-			suspend || ( echo >&2 "$PROGRAM_NAME: suspend returned error $?, falling back to sleep."; loopsleepms $debug_time $update_every $time_divisor)
-		else
-			# wait the time you are required to
-			#loopsleepms $debug_time $update_every $time_divisor
-			if [ ${LOOPSLEEPMS_HIGHRES} -eq 1 ]
-				then
-				sleep 0.2
-			else
-				sleep 1
-			fi
-		fi
-
-		test ${now_ms} -ge ${exit_at} && exit 0
-	done
+    local exit_at \
+        c=0 dt ret last_ms exec_start_ms exec_end_ms \
+        chart now_charts=() next_charts=($run_charts) \
+        next_ms x seconds millis
+
+    # return the current time in ms in $now_ms
+    current_time_ms
+
+    exit_at=$(( now_ms + (restart_timeout * 1000) ))
+
+    for chart in $run_charts
+    do
+        eval "charts_update_every[$chart]=\$$chart$suffix_update_every"
+        test -z "${charts_update_every[$chart]}" && charts_update_every[$charts]=$update_every
+        charts_last_update[$chart]=$((now_ms - (now_ms % (charts_update_every[$chart] * 1000) ) ))
+        charts_next_update[$chart]=$(( charts_last_update[$chart] + (charts_update_every[$chart] * 1000) ))
+        charts_run_counter[$chart]=0
+        charts_serial_failures[$chart]=0
+
+        echo "CHART netdata.plugin_chartsd_$chart '' 'Execution time for $chart plugin' 'milliseconds / run' charts.d netdata.plugin_charts area 145000 ${charts_update_every[$chart]}"
+        echo "DIMENSION run_time 'run time' absolute 1 1"
+    done
+
+    # the main loop
+    while [ "${#next_charts[@]}" -gt 0 ]
+    do
+        c=$((c + 1))
+        now_charts=("${next_charts[@]}")
+        next_charts=()
+
+        # return the current time in ms in $now_ms
+        current_time_ms
+
+        for chart in "${now_charts[@]}"
+        do
+            # echo >&2 "DEBUG: chart: $chart last: ${charts_last_update[$chart]}, next: ${charts_next_update[$chart]}, now: ${now_ms}"
+            if [ ${now_ms} -ge ${charts_next_update[$chart]} ]
+            then
+                last_ms=${charts_last_update[$chart]}
+                dt=$(( (now_ms - last_ms) ))
+                # echo >&2 "DEBUG: chart: $chart last: ${charts_last_update[$chart]}, next: ${charts_next_update[$chart]}, now: ${now_ms}, dt: ${dt}"
+
+                charts_last_update[$chart]=${now_ms}
+
+                while [ ${charts_next_update[$chart]} -lt ${now_ms} ]
+                do
+                    charts_next_update[$chart]=$(( charts_next_update[$chart] + (charts_update_every[$chart] * 1000) ))
+                done
+
+                # the first call should not give a duration
+                # so that netdata calibrates to current time
+                dt=$(( dt * 1000 ))
+                charts_run_counter[$chart]=$(( charts_run_counter[$chart] + 1 ))
+                if [ ${charts_run_counter[$chart]} -eq 1 ]
+                    then
+                    dt=
+                fi
+
+                exec_start_ms=$now_ms
+                $chart$charts_update $dt
+                ret=$?
+
+                # return the current time in ms in $now_ms
+                current_time_ms; exec_end_ms=$now_ms
+
+                echo "BEGIN netdata.plugin_chartsd_$chart $dt"
+                echo "SET run_time = $(( exec_end_ms - exec_start_ms ))"
+                echo "END"
+
+                if [ $ret -eq 0 ]
+                then
+                    charts_serial_failures[$chart]=0
+                    next_charts+=($chart)
+                else
+                    charts_serial_failures[$chart]=$(( charts_serial_failures[$chart] + 1 ))
+
+                    if [ ${charts_serial_failures[$chart]} -gt 10 ]
+                        then
+                        echo >&2 "$PROGRAM_NAME: chart '$chart' update() function reported failure ${charts_serial_failures[$chart]} times. Disabling it."
+                    else
+                        echo >&2 "$PROGRAM_NAME: chart '$chart' update() function reports failure. Will keep trying for a while."
+                        next_charts+=($chart)
+                    fi
+                fi
+            else
+                next_charts+=($chart)
+            fi
+        done
+
+        if [ "$pause_method" = "suspend" ]
+        then
+            echo "STOPPING_WAKE_ME_UP_PLEASE"
+            suspend || ( echo >&2 "$PROGRAM_NAME: suspend returned error $?, falling back to sleep."; loopsleepms $debug_time $update_every $time_divisor)
+        else
+            # wait the time you are required to
+            next_ms=$((now_ms + (update_every * 1000 * 100) ))
+            for x in "${charts_next_update[@]}"; do [ ${x} -lt ${next_ms} ] && next_ms=${x}; done
+            next_ms=$((next_ms - now_ms))
+
+            if [ ${LOOPSLEEPMS_HIGHRES} -eq 1 -a ${next_ms} -gt 0 ]
+                then
+                seconds=$(( next_ms / 1000 ))
+                millis=$(( next_ms % 1000 ))
+                [ ${millis} -lt 10  ] && millis="0${millis}"
+                [ ${millis} -lt 100 ] && millis="0${millis}"
+                [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: sleeping for ${seconds}.${millis} seconds."
+                sleep ${seconds}.${millis}
+            else
+                sleep $update_every
+            fi
+        fi
+
+        test ${now_ms} -ge ${exit_at} && exit 0
+    done
+
+    echo >&2 "$PROGRAM_NAME: Nothing left to do. Disabling charts.d.plugin."
+    echo "DISABLE"
 }
 
 global_update