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diff --git a/collectors/charts.d.plugin/apache/apache.chart.sh b/collectors/charts.d.plugin/apache/apache.chart.sh
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+# shellcheck shell=bash
+# no need for shebang - this file is loaded from charts.d.plugin
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+# netdata
+# real-time performance and health monitoring, done right!
+# (C) 2016 Costa Tsaousis <costa@tsaousis.gr>
+#
+
+# the URL to download apache status info
+apache_url="http://127.0.0.1:80/server-status?auto"
+apache_curl_opts=
+
+# _update_every is a special variable - it holds the number of seconds
+# between the calls of the _update() function
+apache_update_every=
+
+apache_priority=60000
+
+# convert apache floating point values
+# to integer using this multiplier
+# this only affects precision - the values
+# will be in the proper units
+apache_decimal_detail=1000000
+
+declare -a apache_response=()
+apache_accesses=0
+apache_kbytes=0
+apache_reqpersec=0
+apache_bytespersec=0
+apache_bytesperreq=0
+apache_busyworkers=0
+apache_idleworkers=0
+apache_connstotal=0
+apache_connsasyncwriting=0
+apache_connsasynckeepalive=0
+apache_connsasyncclosing=0
+
+apache_keys_detected=0
+apache_has_conns=0
+apache_key_accesses=
+apache_key_kbytes=
+apache_key_reqpersec=
+apache_key_bytespersec=
+apache_key_bytesperreq=
+apache_key_busyworkers=
+apache_key_idleworkers=
+apache_key_scoreboard=
+apache_key_connstotal=
+apache_key_connsasyncwriting=
+apache_key_connsasynckeepalive=
+apache_key_connsasyncclosing=
+apache_detect() {
+ local i=0
+ for x in "${@}"; do
+ case "${x}" in
+ 'Total Accesses') apache_key_accesses=$((i + 1)) ;;
+ 'Total kBytes') apache_key_kbytes=$((i + 1)) ;;
+ 'ReqPerSec') apache_key_reqpersec=$((i + 1)) ;;
+ 'BytesPerSec') apache_key_bytespersec=$((i + 1)) ;;
+ 'BytesPerReq') apache_key_bytesperreq=$((i + 1)) ;;
+ 'BusyWorkers') apache_key_busyworkers=$((i + 1)) ;;
+ 'IdleWorkers') apache_key_idleworkers=$((i + 1)) ;;
+ 'ConnsTotal') apache_key_connstotal=$((i + 1)) ;;
+ 'ConnsAsyncWriting') apache_key_connsasyncwriting=$((i + 1)) ;;
+ 'ConnsAsyncKeepAlive') apache_key_connsasynckeepalive=$((i + 1)) ;;
+ 'ConnsAsyncClosing') apache_key_connsasyncclosing=$((i + 1)) ;;
+ 'Scoreboard') apache_key_scoreboard=$((i)) ;;
+ esac
+
+ i=$((i + 1))
+ done
+
+ # we will not check of the Conns*
+ # keys, since these are apache 2.4 specific
+ [ -z "${apache_key_accesses}" ] && error "missing 'Total Accesses' from apache server: ${*}" && return 1
+ [ -z "${apache_key_kbytes}" ] && error "missing 'Total kBytes' from apache server: ${*}" && return 1
+ [ -z "${apache_key_reqpersec}" ] && error "missing 'ReqPerSec' from apache server: ${*}" && return 1
+ [ -z "${apache_key_bytespersec}" ] && error "missing 'BytesPerSec' from apache server: ${*}" && return 1
+ [ -z "${apache_key_bytesperreq}" ] && error "missing 'BytesPerReq' from apache server: ${*}" && return 1
+ [ -z "${apache_key_busyworkers}" ] && error "missing 'BusyWorkers' from apache server: ${*}" && return 1
+ [ -z "${apache_key_idleworkers}" ] && error "missing 'IdleWorkers' from apache server: ${*}" && return 1
+ [ -z "${apache_key_scoreboard}" ] && error "missing 'Scoreboard' from apache server: ${*}" && return 1
+
+ if [ ! -z "${apache_key_connstotal}" ] &&
+ [ ! -z "${apache_key_connsasyncwriting}" ] &&
+ [ ! -z "${apache_key_connsasynckeepalive}" ] &&
+ [ ! -z "${apache_key_connsasyncclosing}" ]; then
+ apache_has_conns=1
+ else
+ apache_has_conns=0
+ fi
+
+ return 0
+}
+
+apache_get() {
+ local oIFS="${IFS}" ret
+ # shellcheck disable=2207
+ IFS=$':\n' apache_response=($(run curl -Ss ${apache_curl_opts} "${apache_url}"))
+ ret=$?
+ IFS="${oIFS}"
+
+ if [ $ret -ne 0 ] || [ "${#apache_response[@]}" -eq 0 ]; then
+ return 1
+ fi
+
+ # the last line on the apache output is "Scoreboard"
+ # we use this label to detect that the output has a new word count
+ if [ ${apache_keys_detected} -eq 0 ] || [ "${apache_response[${apache_key_scoreboard}]}" != "Scoreboard" ]; then
+ apache_detect "${apache_response[@]}" || return 1
+ apache_keys_detected=1
+ fi
+
+ apache_accesses="${apache_response[${apache_key_accesses}]}"
+ apache_kbytes="${apache_response[${apache_key_kbytes}]}"
+
+ float2int "${apache_response[${apache_key_reqpersec}]}" ${apache_decimal_detail}
+ apache_reqpersec=${FLOAT2INT_RESULT}
+
+ float2int "${apache_response[${apache_key_bytespersec}]}" ${apache_decimal_detail}
+ apache_bytespersec=${FLOAT2INT_RESULT}
+
+ float2int "${apache_response[${apache_key_bytesperreq}]}" ${apache_decimal_detail}
+ apache_bytesperreq=${FLOAT2INT_RESULT}
+
+ apache_busyworkers="${apache_response[${apache_key_busyworkers}]}"
+ apache_idleworkers="${apache_response[${apache_key_idleworkers}]}"
+
+ if
+ [ -z "${apache_accesses}" ] ||
+ [ -z "${apache_kbytes}" ] ||
+ [ -z "${apache_reqpersec}" ] ||
+ [ -z "${apache_bytespersec}" ] ||
+ [ -z "${apache_bytesperreq}" ] ||
+ [ -z "${apache_busyworkers}" ]
+ [ -z "${apache_idleworkers}" ]
+ then
+ error "empty values got from apache server: ${apache_response[*]}"
+ return 1
+ fi
+
+ if [ ${apache_has_conns} -eq 1 ]; then
+ apache_connstotal="${apache_response[${apache_key_connstotal}]}"
+ apache_connsasyncwriting="${apache_response[${apache_key_connsasyncwriting}]}"
+ apache_connsasynckeepalive="${apache_response[${apache_key_connsasynckeepalive}]}"
+ apache_connsasyncclosing="${apache_response[${apache_key_connsasyncclosing}]}"
+ fi
+
+ return 0
+}
+
+# _check is called once, to find out if this chart should be enabled or not
+apache_check() {
+
+ apache_get
+ # shellcheck disable=2181
+ if [ $? -ne 0 ]; then
+ # shellcheck disable=2154
+ error "cannot find stub_status on URL '${apache_url}'. Please set apache_url='http://apache.server:80/server-status?auto' in $confd/apache.conf"
+ return 1
+ fi
+
+ # this should return:
+ # - 0 to enable the chart
+ # - 1 to disable the chart
+
+ return 0
+}
+
+# _create is called once, to create the charts
+apache_create() {
+ cat <<EOF
+CHART apache_local.bytesperreq '' "apache Lifetime Avg. Response Size" "bytes/request" statistics apache.bytesperreq area $((apache_priority + 8)) $apache_update_every
+DIMENSION size '' absolute 1 ${apache_decimal_detail}
+CHART apache_local.workers '' "apache Workers" "workers" workers apache.workers stacked $((apache_priority + 5)) $apache_update_every
+DIMENSION idle '' absolute 1 1
+DIMENSION busy '' absolute 1 1
+CHART apache_local.reqpersec '' "apache Lifetime Avg. Requests/s" "requests/s" statistics apache.reqpersec line $((apache_priority + 6)) $apache_update_every
+DIMENSION requests '' absolute 1 ${apache_decimal_detail}
+CHART apache_local.bytespersec '' "apache Lifetime Avg. Bandwidth/s" "kilobits/s" statistics apache.bytespersec area $((apache_priority + 7)) $apache_update_every
+DIMENSION sent '' absolute 8 $((apache_decimal_detail * 1000))
+CHART apache_local.requests '' "apache Requests" "requests/s" requests apache.requests line $((apache_priority + 1)) $apache_update_every
+DIMENSION requests '' incremental 1 1
+CHART apache_local.net '' "apache Bandwidth" "kilobits/s" bandwidth apache.net area $((apache_priority + 3)) $apache_update_every
+DIMENSION sent '' incremental 8 1
+EOF
+
+ if [ ${apache_has_conns} -eq 1 ]; then
+ cat <<EOF2
+CHART apache_local.connections '' "apache Connections" "connections" connections apache.connections line $((apache_priority + 2)) $apache_update_every
+DIMENSION connections '' absolute 1 1
+CHART apache_local.conns_async '' "apache Async Connections" "connections" connections apache.conns_async stacked $((apache_priority + 4)) $apache_update_every
+DIMENSION keepalive '' absolute 1 1
+DIMENSION closing '' absolute 1 1
+DIMENSION writing '' absolute 1 1
+EOF2
+ fi
+
+ return 0
+}
+
+# _update is called continuously, to collect the values
+apache_update() {
+ # the first argument to this function is the microseconds since last update
+ # pass this parameter to the BEGIN statement (see bellow).
+
+ # do all the work to collect / calculate the values
+ # for each dimension
+ # remember: KEEP IT SIMPLE AND SHORT
+
+ apache_get || return 1
+
+ # write the result of the work.
+ cat <<VALUESEOF
+BEGIN apache_local.requests $1
+SET requests = $((apache_accesses))
+END
+BEGIN apache_local.net $1
+SET sent = $((apache_kbytes))
+END
+BEGIN apache_local.reqpersec $1
+SET requests = $((apache_reqpersec))
+END
+BEGIN apache_local.bytespersec $1
+SET sent = $((apache_bytespersec))
+END
+BEGIN apache_local.bytesperreq $1
+SET size = $((apache_bytesperreq))
+END
+BEGIN apache_local.workers $1
+SET idle = $((apache_idleworkers))
+SET busy = $((apache_busyworkers))
+END
+VALUESEOF
+
+ if [ ${apache_has_conns} -eq 1 ]; then
+ cat <<VALUESEOF2
+BEGIN apache_local.connections $1
+SET connections = $((apache_connstotal))
+END
+BEGIN apache_local.conns_async $1
+SET keepalive = $((apache_connsasynckeepalive))
+SET closing = $((apache_connsasyncclosing))
+SET writing = $((apache_connsasyncwriting))
+END
+VALUESEOF2
+ fi
+
+ return 0
+}