plugins.d/charts.d.plugin

   1 #!/bin/bash
   2
   3 PROGRAM_FILE="$0"
   4 PROGRAM_NAME="$(basename $0)"
   5 PROGRAM_NAME="${PROGRAM_NAME/.plugin}"
   6
   7 # if you need to run parallel charts.d processes
   8 # just link this files with a different name
   9 # in the same directory, with a .plugin suffix
  10 # netdata will start multiple of them
  11 # each will have a different config file
  12
  13 echo >&2 "$PROGRAM_NAME: started from '$PROGRAM_FILE' with options: $*"
  14
  15 if [ $(( ${BASH_VERSINFO[0]} )) -lt 4 ]
  16 then
  17         echo >&2
  18         echo >&2 "$PROGRAM_NAME: ERROR"
  19         echo >&2 "BASH version 4 or later is required."
  20         echo >&2 "You are running version: ${BASH_VERSION}"
  21         echo >&2 "Please upgrade."
  22         echo >&2
  23         exit 1
  24 fi
  25
  26 # check a few commands
  27 require_cmd() {
  28         which "$1" >/dev/null
  29         if [ $? -ne 0 ]
  30                 then
  31                 echo >&2 "$PROGRAM_NAME: ERROR: Command '$1' is not found in the system path."
  32                 return 1
  33         fi
  34         return 0
  35 }
  36
  37 require_cmd date || exit 1
  38 require_cmd sed || exit 1
  39 require_cmd basename || exit 1
  40 require_cmd dirname || exit 1
  41 require_cmd cat || exit 1
  42 require_cmd grep || exit 1
  43 require_cmd egrep || exit 1
  44 require_cmd mktemp || exit 1
  45 require_cmd awk || exit 1
  46
  47 # -----------------------------------------------------------------------------
  48 # insternal defaults
  49 # netdata exposes a few environment variables for us
  50
  51 pause_method="sleep" # use either "suspend" or "sleep"
  52                      # DO NOT USE SUSPEND - LINUX WILL SUSPEND NETDATA TOO
  53                      # THE WHOLE PROCESS GROUP - NOT JUST THE SHELL
  54
  55 pluginsd="${NETDATA_PLUGINS_DIR}"
  56 [ -z "$pluginsd" ] && pluginsd="$( dirname $PROGRAM_FILE )"
  57
  58 confd="${NETDATA_CONFIG_DIR-/etc/netdata}"
  59 chartsd="$pluginsd/../charts.d"
  60
  61 myconfig="$confd/$PROGRAM_NAME.conf"
  62
  63 minimum_update_frequency="${NETDATA_UPDATE_EVERY-1}"
  64 update_every=${minimum_update_frequency}        # this will be overwritten by the command line
  65
  66 # work around for non BASH shells
  67 charts_create="_create"
  68 charts_update="_update"
  69 charts_check="_check"
  70 charts_undescore="_"
  71
  72 # when making iterations, charts.d can loop more frequently
  73 # to prevent plugins missing iterations.
  74 # this is a percentage relative to update_every to align its
  75 # iterations.
  76 # The minimum is 10%, the maximum 100%.
  77 # So, if update_every is 1 second and time_divisor is 50,
  78 # charts.d will iterate every 500ms.
  79 # Charts will be called to collect data only if the time
  80 # passed since the last time the collected data is equal or
  81 # above their update_every.
  82 time_divisor=50
  83
  84 # number of seconds to run without restart
  85 # after this time, charts.d.plugin will exit
  86 # netdata will restart it
  87 restart_timeout=$((3600 * 4))
  88
  89 # check if the charts.d plugins are using global variables
  90 # they should not.
  91 # It does not currently support BASH v4 arrays, so it is
  92 # disabled
  93 dryrunner=0
  94
  95 # check for timeout command
  96 check_for_timeout=1
  97
  98 # the default enable/disable value for all charts
  99 enable_all_charts="yes"
 100
 101 # -----------------------------------------------------------------------------
 102 # parse parameters
 103
 104 debug=0
 105 check=0
 106 chart_only=
 107 while [ ! -z "$1" ]
 108 do
 109         if [ "$1" = "check" ]
 110         then
 111                 check=1
 112                 shift
 113                 continue
 114         fi
 115
 116         if [ "$1" = "debug" -o "$1" = "all" ]
 117         then
 118                 debug=1
 119                 shift
 120                 continue
 121         fi
 122
 123         if [ -f "$chartsd/$1.chart.sh" ]
 124         then
 125                 debug=1
 126                 chart_only="$( echo $1.chart.sh | sed "s/\.chart\.sh$//g" )"
 127                 shift
 128                 continue
 129         fi
 130
 131         if [ -f "$chartsd/$1" ]
 132         then
 133                 debug=1
 134                 chart_only="$( echo $1 | sed "s/\.chart\.sh$//g" )"
 135                 shift
 136                 continue
 137         fi
 138
 139         # number check
 140         n="$1"
 141         x=$(( n ))
 142         if [ "$x" = "$n" ]
 143         then
 144                 shift
 145                 update_every=$x
 146                 [ $update_every -lt $minimum_update_frequency ] && update_every=$minimum_update_frequency
 147                 continue
 148         fi
 149
 150         echo >&2 "Cannot understand parameter $1. Aborting."
 151         echo "DISABLE"
 152         exit 1
 153 done
 154
 155
 156 # -----------------------------------------------------------------------------
 157 # load my configuration
 158
 159 if [ -f "$myconfig" ]
 160         then
 161         . "$myconfig"
 162         if [ $? -ne 0 ]
 163         then
 164                 echo >&2 "$PROGRAM_NAME: cannot load $myconfig"
 165                 echo "DISABLE"
 166                 exit 1
 167         fi
 168         time_divisor=$((time_divisor))
 169         [ $time_divisor -lt 10 ] && time_divisor=10
 170         [ $time_divisor -gt 100 ] && time_divisor=100
 171 else
 172         echo >&2 "$PROGRAM_NAME: configuration file '$myconfig' not found. Using defaults."
 173 fi
 174
 175 if [ "$pause_method" = "suspend" ]
 176 then
 177         # enable bash job control
 178         # this is required for suspend to work
 179         set -m
 180 fi
 181
 182 # we check for the timeout command, after we load our
 183 # configuration, so that the user may overwrite the
 184 # timeout command we use, providing a function that
 185 # can emulate the timeout command we need:
 186 # > timeout SECONDS command ...
 187 if [ $check_for_timeout -eq 1 ]
 188         then
 189         require_cmd timeout || exit 1
 190 fi
 191
 192 # -----------------------------------------------------------------------------
 193 # internal checks
 194
 195 # netdata passes the requested update frequency as the first argument
 196 update_every=$(( update_every + 1 - 1)) # makes sure it is a number
 197 test $update_every -eq 0 && update_every=1 # if it is zero, make it 1
 198
 199 # check the charts.d directory
 200 if [ ! -d "$chartsd" ]
 201         then
 202         echo >&2 "$PROGRAM_NAME: cannot find charts directory '$chartsd'"
 203         echo "DISABLE"
 204 fi
 205
 206
 207 # -----------------------------------------------------------------------------
 208 # loop control
 209
 210 # default sleep function
 211 LOOPSLEEPMS_HIGHRES=0
 212 loopsleepms() {
 213         [ "$1" = "tellwork" ] && shift
 214         sleep $1
 215 }
 216
 217 now_ms=
 218 current_time_ms() {
 219         now_ms="$(date +'%s')000"
 220 }
 221
 222 # if found and included, this file overwrites loopsleepms()
 223 # and current_time_ms() with a high resolution timer function
 224 # for precise looping.
 225 . "$pluginsd/loopsleepms.sh.inc"
 226
 227
 228 # -----------------------------------------------------------------------------
 229 # library functions
 230
 231 fixid() {
 232         echo "$*" |\
 233                 tr -c "[A-Z][a-z][0-9]" "_" |\
 234                 sed -e "s|^_\+||g" -e "s|_\+$||g" -e "s|_\+|_|g" |\
 235                 tr "[A-Z]" "[a-z]"
 236 }
 237
 238 # convert any floating point number
 239 # to integer, give a multiplier
 240 # the result is stored in ${FLOAT2INT_RESULT}
 241 # so that no fork is necessary
 242 # the multiplier must be a power of 10
 243 float2int() {
 244         local f m="$2" a b l v=($1)
 245         f=${v[0]}
 246
 247         # echo >&2 "value='${1}' f='${f}', m='${m}'"
 248
 249         # the length of the multiplier - 1
 250         l=$(( ${#m} - 1 ))
 251
 252         # check if the number is in scientific notation
 253         if [[ ${f} =~ ^[[:space:]]*(-)?[0-9.]+(e|E)(\+|-)[0-9]+ ]]
 254                 then
 255                 # convert it to decimal
 256                 # unfortunately, this fork cannot be avoided
 257                 # if you know of a way to avoid it, please let me know
 258                 f=$(printf "%0.${l}f" ${f})
 259         fi
 260
 261         # split the floating point number
 262         # in integer (a) and decimal (b)
 263         a=${f/.*/}
 264         b=${f/*./}
 265
 266         # if the integer part is missing
 267         # set it to zero
 268         [ -z "${a}" ] && a="0"
 269
 270         # strip leading zeros from the integer part
 271         # base 10 convertion
 272         a=$((10#$a))
 273
 274         # check the length of the decimal part
 275         # against the length of the multiplier
 276         if [ ${#b} -gt ${l} ]
 277                 then
 278                 # too many digits - take the most significant
 279                 b=${b:0:${l}}
 280
 281         elif [ ${#b} -lt ${l} ]
 282                 then
 283                 # too few digits - pad with zero on the right
 284                 local z="00000000000000000000000" r=$((l - ${#b}))
 285                 b="${b}${z:0:${r}}"
 286         fi
 287
 288         # strip leading zeros from the decimal part
 289         # base 10 convertion
 290         b=$((10#$b))
 291
 292         # store the result
 293         FLOAT2INT_RESULT=$(( (a * m) + b ))
 294         #echo >&2 "FLOAT2INT_RESULT='${FLOAT2INT_RESULT}'"
 295 }
 296
 297
 298 # -----------------------------------------------------------------------------
 299 # charts check functions
 300
 301 all_charts() {
 302         cd "$chartsd"
 303         [ $? -ne 0 ] && echo >&2 "$PROGRAM_NAME: Cannot cd to $chartsd" && return 1
 304
 305         ls *.chart.sh | sed "s/\.chart\.sh$//g"
 306 }
 307
 308 declare -A charts_enable_keyword=(
 309               ['apache']="force"
 310             ['cpu_apps']="force"
 311              ['cpufreq']="force"
 312              ['example']="force"
 313                 ['exim']="force"
 314              ['hddtemp']="force"
 315         ['load_average']="force"
 316             ['mem_apps']="force"
 317                ['mysql']="force"
 318                ['nginx']="force"
 319               ['phpfpm']="force"
 320              ['postfix']="force"
 321              ['sensors']="force"
 322                ['squid']="force"
 323               ['tomcat']="force"
 324         )
 325
 326 all_enabled_charts() {
 327         local charts= enabled= required=
 328
 329         # find all enabled charts
 330
 331         for chart in $( all_charts )
 332         do
 333                 eval "enabled=\$$chart"
 334                 if [ -z "${enabled}" ]
 335                         then
 336                         enabled="${enable_all_charts}"
 337                 fi
 338
 339                 required="${charts_enable_keyword[${chart}]}"
 340                 [ -z "${required}" ] && required="yes"
 341
 342                 if [ ! "${enabled}" = "${required}" ]
 343                 then
 344                         echo >&2 "$PROGRAM_NAME: '$chart' is NOT enabled. Add a line with $chart=$required in $myconfig to enable it (or remove the line that disables it)."
 345                 else
 346                         [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: '$chart' is enabled."
 347                         local charts="$charts $chart"
 348                 fi
 349         done
 350
 351         local charts2=
 352         for chart in $charts
 353         do
 354                 # check the enabled charts
 355                 local check="$( cat "$chartsd/$chart.chart.sh" | sed "s/^ \+//g" | grep "^$chart$charts_check()" )"
 356                 if [ -z "$check" ]
 357                 then
 358                         echo >&2 "$PROGRAM_NAME: chart '$chart' does not seem to have a $chart$charts_check() function. Disabling it."
 359                         continue
 360                 fi
 361
 362                 local create="$( cat "$chartsd/$chart.chart.sh" | sed "s/^ \+//g" | grep "^$chart$charts_create()" )"
 363                 if [ -z "$create" ]
 364                 then
 365                         echo >&2 "$PROGRAM_NAME: chart '$chart' does not seem to have a $chart$charts_create() function. Disabling it."
 366                         continue
 367                 fi
 368
 369                 local update="$( cat "$chartsd/$chart.chart.sh" | sed "s/^ \+//g" | grep "^$chart$charts_update()" )"
 370                 if [ -z "$update" ]
 371                 then
 372                         echo >&2 "$PROGRAM_NAME: chart '$chart' does not seem to have a $chart$charts_update() function. Disabling it."
 373                         continue
 374                 fi
 375
 376                 # check its config
 377                 #if [ -f "$confd/$chart.conf" ]
 378                 #then
 379                 #       if [ ! -z "$( cat "$confd/$chart.conf" | sed "s/^ \+//g" | grep -v "^$" | grep -v "^#" | grep -v "^$chart$charts_undescore" )" ]
 380                 #       then
 381                 #               echo >&2 "$PROGRAM_NAME: chart's $chart config $confd/$chart.conf should only have lines starting with $chart$charts_undescore . Disabling it."
 382                 #               continue
 383                 #       fi
 384                 #fi
 385
 386                 #if [ $dryrunner -eq 1 ]
 387                 #       then
 388                 #       "$pluginsd/charts.d.dryrun-helper.sh" "$chart" "$chartsd/$chart.chart.sh" "$confd/$chart.conf" >/dev/null
 389                 #       if [ $? -ne 0 ]
 390                 #       then
 391                 #               echo >&2 "$PROGRAM_NAME: chart's $chart did not pass the dry run check. This means it uses global variables not starting with $chart. Disabling it."
 392                 #               continue
 393                 #       fi
 394                 #fi
 395
 396                 local charts2="$charts2 $chart"
 397         done
 398
 399         echo $charts2
 400         [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: enabled charts: $charts2"
 401 }
 402
 403
 404 # -----------------------------------------------------------------------------
 405 # load the charts
 406
 407 suffix_update_every="_update_every"
 408 active_charts=
 409 for chart in $( all_enabled_charts )
 410 do
 411         [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: loading chart: '$chartsd/$chart.chart.sh'"
 412         . "$chartsd/$chart.chart.sh"
 413
 414         if [ -f "$confd/$chart.conf" ]
 415         then
 416                 [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: loading chart options: '$confd/$chart.conf'"
 417                 . "$confd/$chart.conf"
 418         else
 419                 echo >&2 "$PROGRAM_NAME: $chart: configuration file '$confd/$chart.conf' not found. Using defaults."
 420         fi
 421
 422         eval "dt=\$$chart$suffix_update_every"
 423         dt=$(( dt + 1 - 1 )) # make sure it is a number
 424         if [ $dt -lt $update_every ]
 425         then
 426                 eval "$chart$suffix_update_every=$update_every"
 427         fi
 428
 429         $chart$charts_check
 430         if [ $? -eq 0 ]
 431         then
 432                 [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: '$chart' activated"
 433                 active_charts="$active_charts $chart"
 434         else
 435                 echo >&2 "$PROGRAM_NAME: chart '$chart' check() function reports failure."
 436         fi
 437 done
 438 [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: activated charts: $active_charts"
 439
 440
 441 # -----------------------------------------------------------------------------
 442 # check overwrites
 443
 444 # enable work time reporting
 445 debug_time=
 446 test $debug -eq 1 && debug_time=tellwork
 447
 448 # if we only need a specific chart, remove all the others
 449 if [ ! -z "${chart_only}" ]
 450 then
 451         [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: requested to run only for: '${chart_only}'"
 452         check_charts=
 453         for chart in $active_charts
 454         do
 455                 if [ "$chart" = "$chart_only" ]
 456                 then
 457                         check_charts="$chart"
 458                         break
 459                 fi
 460         done
 461         active_charts="$check_charts"
 462 fi
 463 [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: activated charts: $active_charts"
 464
 465 # stop if we just need a pre-check
 466 if [ $check -eq 1 ]
 467 then
 468         echo >&2 "CHECK RESULT"
 469         echo >&2 "Will run the charts: $active_charts"
 470         exit 0
 471 fi
 472
 473 # -----------------------------------------------------------------------------
 474 # create temp dir
 475
 476 TMP_DIR=
 477 chartsd_cleanup() {
 478         cd /tmp
 479         if [ ! -z "$TMP_DIR" -a -d "$TMP_DIR" ]
 480         then
 481                 [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: cleaning up temporary directory $TMP_DIR ..."
 482                 rm -rf "$TMP_DIR"
 483         fi
 484         exit 0
 485 }
 486 trap chartsd_cleanup EXIT
 487 trap chartsd_cleanup SIGHUP
 488 trap chartsd_cleanup INT
 489
 490 if [ $UID = "0" ]
 491 then
 492         TMP_DIR="$( mktemp -d /var/run/netdata-${PROGRAM_NAME}-XXXXXXXXXX )"
 493 else
 494         TMP_DIR="$( mktemp -d /tmp/.netdata-${PROGRAM_NAME}-XXXXXXXXXX )"
 495 fi
 496
 497 cd "$TMP_DIR" || exit 1
 498
 499 # -----------------------------------------------------------------------------
 500 # create charts
 501
 502 run_charts=
 503 for chart in $active_charts
 504 do
 505         [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: Calling '$chart$charts_create()'..."
 506         $chart$charts_create
 507         if [ $? -eq 0 ]
 508         then
 509                 run_charts="$run_charts $chart"
 510                 [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: '$chart' has initialized."
 511         else
 512                 echo >&2 "$PROGRAM_NAME: chart '$chart' function '$chart$charts_create()' reports failure."
 513         fi
 514 done
 515 [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: run_charts='$run_charts'"
 516
 517
 518 # -----------------------------------------------------------------------------
 519 # update dimensions
 520
 521 if [ -z "$run_charts" ]
 522         then
 523         echo >&2 "$PROGRAM_NAME: No charts to collect data from."
 524         echo "DISABLE"
 525         exit 1
 526 fi
 527
 528 declare -A charts_last_update=() charts_update_every=() charts_next_update=() charts_run_counter=() charts_serial_failures=()
 529 global_update() {
 530         local exit_at \
 531                 c=0 dt ret last_ms exec_start_ms exec_end_ms \
 532                 chart now_charts=() next_charts=($run_charts) \
 533                 next_ms x seconds millis
 534
 535         # return the current time in ms in $now_ms
 536         current_time_ms
 537
 538         exit_at=$(( now_ms + (restart_timeout * 1000) ))
 539
 540         for chart in $run_charts
 541         do
 542                 eval "charts_update_every[$chart]=\$$chart$suffix_update_every"
 543                 test -z "${charts_update_every[$chart]}" && charts_update_every[$charts]=$update_every
 544                 charts_last_update[$chart]=$((now_ms - (now_ms % (charts_update_every[$chart] * 1000) ) ))
 545                 charts_next_update[$chart]=$(( charts_last_update[$chart] + (charts_update_every[$chart] * 1000) ))
 546                 charts_run_counter[$chart]=0
 547                 charts_serial_failures[$chart]=0
 548
 549                 echo "CHART netdata.plugin_chartsd_$chart '' 'Execution time for $chart plugin' 'milliseconds / run' charts.d netdata.plugin_charts area 145000 ${charts_update_every[$chart]}"
 550                 echo "DIMENSION run_time 'run time' absolute 1 1"
 551         done
 552
 553         # the main loop
 554         while [ "${#next_charts[@]}" -gt 0 ]
 555         do
 556                 c=$((c + 1))
 557                 now_charts=("${next_charts[@]}")
 558                 next_charts=()
 559
 560                 # return the current time in ms in $now_ms
 561                 current_time_ms
 562
 563                 for chart in "${now_charts[@]}"
 564                 do
 565                         # echo >&2 "DEBUG: chart: $chart last: ${charts_last_update[$chart]}, next: ${charts_next_update[$chart]}, now: ${now_ms}"
 566                         if [ ${now_ms} -ge ${charts_next_update[$chart]} ]
 567                         then
 568                                 last_ms=${charts_last_update[$chart]}
 569                                 dt=$(( (now_ms - last_ms) ))
 570                                 # echo >&2 "DEBUG: chart: $chart last: ${charts_last_update[$chart]}, next: ${charts_next_update[$chart]}, now: ${now_ms}, dt: ${dt}"
 571
 572                                 charts_last_update[$chart]=${now_ms}
 573
 574                                 while [ ${charts_next_update[$chart]} -lt ${now_ms} ]
 575                                 do
 576                                         charts_next_update[$chart]=$(( charts_next_update[$chart] + (charts_update_every[$chart] * 1000) ))
 577                                 done
 578
 579                                 # the first call should not give a duration
 580                                 # so that netdata calibrates to current time
 581                                 dt=$(( dt * 1000 ))
 582                                 charts_run_counter[$chart]=$(( charts_run_counter[$chart] + 1 ))
 583                                 if [ ${charts_run_counter[$chart]} -eq 1 ]
 584                                         then
 585                                         dt=
 586                                 fi
 587
 588                                 exec_start_ms=$now_ms
 589                                 $chart$charts_update $dt
 590                                 ret=$?
 591
 592                                 # return the current time in ms in $now_ms
 593                                 current_time_ms; exec_end_ms=$now_ms
 594
 595                                 echo "BEGIN netdata.plugin_chartsd_$chart $dt"
 596                                 echo "SET run_time = $(( exec_end_ms - exec_start_ms ))"
 597                                 echo "END"
 598
 599                                 if [ $ret -eq 0 ]
 600                                 then
 601                                         charts_serial_failures[$chart]=0
 602                                         next_charts+=($chart)
 603                                 else
 604                                         charts_serial_failures[$chart]=$(( charts_serial_failures[$chart] + 1 ))
 605
 606                                         if [ ${charts_serial_failures[$chart]} -gt 10 ]
 607                                                 then
 608                                                 echo >&2 "$PROGRAM_NAME: chart '$chart' update() function reported failure ${charts_serial_failures[$chart]} times. Disabling it."
 609                                         else
 610                                                 echo >&2 "$PROGRAM_NAME: chart '$chart' update() function reports failure. Will keep trying for a while."
 611                                                 next_charts+=($chart)
 612                                         fi
 613                                 fi
 614                         else
 615                                 next_charts+=($chart)
 616                         fi
 617                 done
 618
 619                 if [ "$pause_method" = "suspend" ]
 620                 then
 621                         echo "STOPPING_WAKE_ME_UP_PLEASE"
 622                         suspend || ( echo >&2 "$PROGRAM_NAME: suspend returned error $?, falling back to sleep."; loopsleepms $debug_time $update_every $time_divisor)
 623                 else
 624                         # wait the time you are required to
 625                         next_ms=$((now_ms + (update_every * 1000 * 100) ))
 626                         for x in "${charts_next_update[@]}"; do [ ${x} -lt ${next_ms} ] && next_ms=${x}; done
 627                         next_ms=$((next_ms - now_ms))
 628
 629                         if [ ${LOOPSLEEPMS_HIGHRES} -eq 1 -a ${next_ms} -gt 0 ]
 630                                 then
 631                                 seconds=$(( next_ms / 1000 ))
 632                                 millis=$(( next_ms % 1000 ))
 633                                 [ ${millis} -lt 10  ] && millis="0${millis}"
 634                                 [ ${millis} -lt 100 ] && millis="0${millis}"
 635                                 [ $debug -eq 1 ] && echo >&2 "$PROGRAM_NAME: sleeping for ${seconds}.${millis} seconds."
 636                                 sleep ${seconds}.${millis}
 637                         else
 638                                 sleep $update_every
 639                         fi
 640                 fi
 641
 642                 test ${now_ms} -ge ${exit_at} && exit 0
 643         done
 644
 645         echo >&2 "$PROGRAM_NAME: Nothing left to do. Disabling charts.d.plugin."
 646         echo "DISABLE"
 647 }
 648
 649 global_update