| 1 |
#!/usr/bin/perl -w |
| 2 |
|
| 3 |
# |
| 4 |
# i-scream central monitoring system |
| 5 |
# Copyright (C) 2000-2002 i-scream |
| 6 |
# |
| 7 |
# This program is free software; you can redistribute it and/or |
| 8 |
# modify it under the terms of the GNU General Public License |
| 9 |
# as published by the Free Software Foundation; either version 2 |
| 10 |
# of the License, or (at your option) any later version. |
| 11 |
# |
| 12 |
# This program is distributed in the hope that it will be useful, |
| 13 |
# but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 |
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 |
# GNU General Public License for more details. |
| 16 |
# |
| 17 |
# You should have received a copy of the GNU General Public License |
| 18 |
# along with this program; if not, write to the Free Software |
| 19 |
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
| 20 |
# |
| 21 |
|
| 22 |
# ----------------------------------------------------------- |
| 23 |
# i-scream graph generation scripts |
| 24 |
# http://www.i-scream.org.uk |
| 25 |
# |
| 26 |
# Generates rrd databases for i-scream data by connecting to |
| 27 |
# the i-scream server and collecting data. |
| 28 |
# |
| 29 |
# $Author: tdb $ |
| 30 |
# $Id: watch.pl,v 1.1 2002/03/18 13:24:31 tdb Exp $ |
| 31 |
#------------------------------------------------------------ |
| 32 |
|
| 33 |
## TODO |
| 34 |
# ought to think about cleaning up when we restart? |
| 35 |
# -- old queue data etc |
| 36 |
|
| 37 |
$| = 1; |
| 38 |
|
| 39 |
use strict; |
| 40 |
use iscream::XMLParser; |
| 41 |
use IO::Socket; |
| 42 |
use RRDs; |
| 43 |
|
| 44 |
# Base directory for images |
| 45 |
# (a directory will be constructed for each host under this) |
| 46 |
my($imgdir) = "/home/pkg/iscream/public_html/graphs"; |
| 47 |
|
| 48 |
# Location of RRD databases |
| 49 |
my($rrddir) = "/u1/i-scream/databases"; |
| 50 |
|
| 51 |
# for reference: |
| 52 |
# ch -> hex: $hex = sprintf("%02x", ord($ch)); |
| 53 |
# hex -> ch: $ch = chr(hex($hex)); |
| 54 |
|
| 55 |
# / converted to a decimal then hex'd |
| 56 |
my($hex_slash) = "_2f"; |
| 57 |
# _ converted to a decimal then hex'd |
| 58 |
my($hex_underscore) = "_5f"; |
| 59 |
|
| 60 |
# step interval in the rrd databases |
| 61 |
my($rrdstep) = 15; |
| 62 |
|
| 63 |
# time to wait (in seconds) before retrying a connection |
| 64 |
my($retry_wait) = 10; |
| 65 |
|
| 66 |
if (@ARGV != 2) { |
| 67 |
die "Usage: watch.pl [i-scream client interface] [TCP port]\n"; |
| 68 |
} |
| 69 |
|
| 70 |
# user supplied client interface server and port |
| 71 |
my($addr) = $ARGV[0]; |
| 72 |
my($cport) = $ARGV[1]; |
| 73 |
|
| 74 |
while(1) { |
| 75 |
|
| 76 |
print "Connecting control channel to port $cport on $addr...\n"; |
| 77 |
|
| 78 |
# attempt to connect the control channel |
| 79 |
my($csock) = new IO::Socket::INET( |
| 80 |
PeerAddr => $addr, |
| 81 |
PeerPort => $cport, |
| 82 |
Proto => 'tcp' |
| 83 |
); |
| 84 |
|
| 85 |
# if socket isn't defined connection failed |
| 86 |
if (!defined $csock) { |
| 87 |
print STDERR "ERROR: Could not connect control channel to $addr:$cport.\n"; |
| 88 |
print STDERR "Please check that there is an i-scream server at this address.\n"; |
| 89 |
&wait_then_retry(); |
| 90 |
next; |
| 91 |
} |
| 92 |
|
| 93 |
my($response); |
| 94 |
|
| 95 |
# client interface should send it's protocol ID |
| 96 |
# we know about "PROTOCOL 1.1", and will only accept the same |
| 97 |
$response = <$csock>; |
| 98 |
if ($response && $response ne "PROTOCOL 1.1\n") { |
| 99 |
print STDERR "The i-scream server sent an unexpected protocol ID: $response\n"; |
| 100 |
close($csock); |
| 101 |
&wait_then_retry(); |
| 102 |
next; |
| 103 |
} |
| 104 |
|
| 105 |
# send our identifier to the client interface |
| 106 |
print $csock "rrdgraphing\n"; |
| 107 |
$response = <$csock>; |
| 108 |
if ($response && $response ne "OK\n") { |
| 109 |
print STDERR "Received unexpected response: $response\n"; |
| 110 |
close($csock); |
| 111 |
&wait_then_retry(); |
| 112 |
next; |
| 113 |
} |
| 114 |
|
| 115 |
# tell the client interface we'd like to start the data channel |
| 116 |
print $csock "STARTDATA\n"; |
| 117 |
|
| 118 |
# the response should be the socket to connect the data channel to |
| 119 |
$response = <$csock>; |
| 120 |
chomp $response; |
| 121 |
|
| 122 |
my($dport) = $response; |
| 123 |
print "Connecting data channel to port $dport on $addr...\n"; |
| 124 |
|
| 125 |
# attempt to connect the data channel |
| 126 |
my($dsock) = new IO::Socket::INET( |
| 127 |
PeerAddr => $addr, |
| 128 |
PeerPort => $dport, |
| 129 |
Proto => 'tcp' |
| 130 |
) or die "arse?"; |
| 131 |
|
| 132 |
# if socket isn't defined connection failed |
| 133 |
if (!defined $dsock) { |
| 134 |
print STDERR "ERROR: Could not connect data channel to $addr:$dport.\n"; |
| 135 |
print STDERR "Failure in communications.\n"; |
| 136 |
close($csock); |
| 137 |
&wait_then_retry(); |
| 138 |
next; |
| 139 |
} |
| 140 |
|
| 141 |
# the data channel should now be sending us data! |
| 142 |
|
| 143 |
# call sub to process data being received over the data channel |
| 144 |
&processdata($dsock); |
| 145 |
|
| 146 |
# data processing has stopped, close sockets |
| 147 |
close($csock); |
| 148 |
close($dsock); |
| 149 |
|
| 150 |
# wait before retrying |
| 151 |
&wait_then_retry(); |
| 152 |
} |
| 153 |
|
| 154 |
# we'll never reach here... unless 1 becomes false for some reason ;) |
| 155 |
exit 0; |
| 156 |
|
| 157 |
|
| 158 |
# |
| 159 |
# wait for a while before retrying |
| 160 |
# |
| 161 |
sub wait_then_retry() { |
| 162 |
print STDERR "Will retry connection to i-scream server in $retry_wait seconds.\n\n"; |
| 163 |
sleep $retry_wait; |
| 164 |
} |
| 165 |
|
| 166 |
# |
| 167 |
# Given the socket of the data channel will process all |
| 168 |
# the incoming XML data, creating and updating the appropriate |
| 169 |
# database files. |
| 170 |
# |
| 171 |
# $dsock = socket connected to the data channel |
| 172 |
# |
| 173 |
sub processdata() { |
| 174 |
# the socket connected to the data channel |
| 175 |
my($dsock) = @_; |
| 176 |
# save us recreating this variable each time we loop |
| 177 |
my($xml); |
| 178 |
|
| 179 |
while(1) { |
| 180 |
# read data |
| 181 |
$xml = <$dsock>; |
| 182 |
|
| 183 |
# something odd has happened |
| 184 |
last if not defined $xml; |
| 185 |
|
| 186 |
# attempt to parse the data |
| 187 |
my($err, %xmlhash) = &iscream::XMLParser::parse($xml); |
| 188 |
if($err) { |
| 189 |
print STDERR "Skipped, XML did not parse: $xml"; |
| 190 |
next; |
| 191 |
} |
| 192 |
|
| 193 |
# standard data packet |
| 194 |
if($xmlhash{"packet.attributes.type"} eq "data") { |
| 195 |
my($machine) = $xmlhash{"packet.attributes.machine_name"}; |
| 196 |
my($date) = $xmlhash{"packet.attributes.date"}; |
| 197 |
|
| 198 |
# make directory for machine |
| 199 |
if(! -d "$rrddir/$machine") { |
| 200 |
# not sure on this umask, but it seems to work? |
| 201 |
mkdir "$rrddir/$machine", 0777; |
| 202 |
} |
| 203 |
|
| 204 |
my(@data); |
| 205 |
|
| 206 |
# cpu |
| 207 |
@data = ( "packet.cpu.idle:idle:GAUGE", |
| 208 |
"packet.cpu.user:user:GAUGE", |
| 209 |
"packet.cpu.kernel:kernel:GAUGE", |
| 210 |
"packet.cpu.swap:swap:GAUGE", |
| 211 |
"packet.cpu.iowait:iowait:GAUGE", |
| 212 |
); |
| 213 |
&updaterrd($machine, "cpu", $date, $rrdstep, \%xmlhash, @data); |
| 214 |
|
| 215 |
# mem |
| 216 |
@data = ( "packet.memory.free:free:GAUGE", |
| 217 |
"packet.memory.total:total:GAUGE", |
| 218 |
); |
| 219 |
&updaterrd($machine, "mem", $date, $rrdstep, \%xmlhash, @data); |
| 220 |
|
| 221 |
# load |
| 222 |
@data = ( "packet.load.load1:load1:GAUGE", |
| 223 |
"packet.load.load5:load5:GAUGE", |
| 224 |
"packet.load.load15:load15:GAUGE", |
| 225 |
); |
| 226 |
&updaterrd($machine, "load", $date, $rrdstep, \%xmlhash, @data); |
| 227 |
|
| 228 |
# processes |
| 229 |
@data = ( "packet.processes.cpu:cpu:GAUGE", |
| 230 |
"packet.processes.sleeping:sleeping:GAUGE", |
| 231 |
"packet.processes.stopped:stopped:GAUGE", |
| 232 |
"packet.processes.total:total:GAUGE", |
| 233 |
"packet.processes.zombie:zombie:GAUGE", |
| 234 |
); |
| 235 |
&updaterrd($machine, "proc", $date, $rrdstep, \%xmlhash, @data); |
| 236 |
|
| 237 |
# swap |
| 238 |
@data = ( "packet.swap.free:free:GAUGE", |
| 239 |
"packet.swap.total:total:GAUGE", |
| 240 |
); |
| 241 |
&updaterrd($machine, "swap", $date, $rrdstep, \%xmlhash, @data); |
| 242 |
|
| 243 |
# users |
| 244 |
@data = ( "packet.users.count:count:GAUGE", |
| 245 |
); |
| 246 |
&updaterrd($machine, "users", $date, $rrdstep, \%xmlhash, @data); |
| 247 |
|
| 248 |
# disk |
| 249 |
my($i) = 0; |
| 250 |
while(defined $xmlhash{"packet.disk.p$i.attributes.mount"}) { |
| 251 |
my($mount) = $xmlhash{"packet.disk.p$i.attributes.mount"}; |
| 252 |
$mount =~ s/_/$hex_underscore/g; |
| 253 |
$mount =~ s/\//$hex_slash/g; |
| 254 |
@data = ( "packet.disk.p$i.attributes.kbytes:kbytes:GAUGE", |
| 255 |
"packet.disk.p$i.attributes.used:used:GAUGE", |
| 256 |
); |
| 257 |
&updaterrd($machine, "disk-$mount", $date, $rrdstep, \%xmlhash, @data); |
| 258 |
++$i; |
| 259 |
} |
| 260 |
} |
| 261 |
|
| 262 |
# queue statistics packet |
| 263 |
elsif($xmlhash{"packet.attributes.type"} eq "queueStat") { |
| 264 |
# psuedo machine for internal server stuff |
| 265 |
my($machine) = "i-scream-server"; |
| 266 |
# make directory |
| 267 |
if(! -d "$rrddir/$machine") { |
| 268 |
# not sure on this umask, but it seems to work? |
| 269 |
mkdir "$rrddir/$machine", 0777; |
| 270 |
} |
| 271 |
my($hash) = $xmlhash{"packet.attributes.hashCode"}; |
| 272 |
my($date) = $xmlhash{"packet.attributes.date"}; |
| 273 |
my($name) = $xmlhash{"packet.attributes.name"}; |
| 274 |
# take a look to see if we have a shutdown packet... |
| 275 |
if($xmlhash{"packet.attributes.shutdown"} && $xmlhash{"packet.attributes.shutdown"} eq "true") { |
| 276 |
unlink <$rrddir/$machine/$hash\_*.rrd>, "$rrddir/$machine/$hash.def", <$imgdir/$machine/$hash*.png>; |
| 277 |
next; |
| 278 |
} |
| 279 |
# look through to see how many internal queues we have |
| 280 |
my($i) = 0; |
| 281 |
while(defined $xmlhash{"packet.queue.attributes.queue$i"}) { |
| 282 |
# see if the queue has been removed |
| 283 |
if($xmlhash{"packet.queue.attributes.queue$i"} eq "[deleted]") { |
| 284 |
# delete the queues rrd |
| 285 |
unlink "$rrddir/$machine/$hash\_$i.rrd"; |
| 286 |
# are there any other rrd's left on this queue? if not, cleanup. |
| 287 |
# get a list of any that may be still there.. |
| 288 |
opendir(DIR, "$rrddir/$machine"); |
| 289 |
my(@rrdcountfiles) = grep { -f "$rrddir/$machine/$_" && /^$hash\_\d+.rrd$/ } readdir(DIR); |
| 290 |
closedir DIR; |
| 291 |
# count them (+1 because an empty array is size -1) |
| 292 |
my($rrdcount) = $#rrdcountfiles + 1; |
| 293 |
if($rrdcount == 0) { |
| 294 |
# clean up the def file and any images |
| 295 |
unlink "$rrddir/$machine/$hash.def", <$imgdir/$machine/$hash*.png>; |
| 296 |
} |
| 297 |
++$i; |
| 298 |
next; |
| 299 |
} |
| 300 |
# the &updaterrd will also do this check, but we want |
| 301 |
# to write our def file out first |
| 302 |
if( ! -f "$rrddir/$machine/$hash\_$i.rrd" ) { |
| 303 |
open(DEF, ">$rrddir/$machine/$hash.def"); |
| 304 |
print DEF $name; |
| 305 |
close DEF; |
| 306 |
} |
| 307 |
my(@data) = ( "packet.queue.attributes.queue$i:size:GAUGE", |
| 308 |
"packet.queue.attributes.total:total:COUNTER", |
| 309 |
); |
| 310 |
&updaterrd($machine, "$hash\_$i", $date, $rrdstep, \%xmlhash, @data); |
| 311 |
++$i; |
| 312 |
} |
| 313 |
} |
| 314 |
else { |
| 315 |
#print STDERR "SKIPPED: valid xml, but not a data or statistics packet\n"; |
| 316 |
} |
| 317 |
} |
| 318 |
|
| 319 |
# we'll now return from this sub and reconnect |
| 320 |
print STDERR "Data channel socket gave no data, bailing out...\n"; |
| 321 |
} |
| 322 |
|
| 323 |
# |
| 324 |
# sub to update an rrd file |
| 325 |
# |
| 326 |
# $machine = name of the machine |
| 327 |
# (eg. kernow.ukc.ac.uk) |
| 328 |
# $type = the type of graph for the machine |
| 329 |
# (eg. cpu) |
| 330 |
# $date = the date of the item we want to add |
| 331 |
# (in seconds since the epoch) |
| 332 |
# $step = the interval at which the database steps |
| 333 |
# used when we create a new rrd |
| 334 |
# $xmlref = reference to the xml data packet |
| 335 |
# @data = array containing data items to add |
| 336 |
# (eg. "packet.cpu.user:user:GAUGE") |
| 337 |
# |
| 338 |
sub updaterrd() { |
| 339 |
my($machine, $type, $date, $step, $xmlref, @data) = @_; |
| 340 |
# get hold of the xmlhash we have a reference to |
| 341 |
my(%xmlhash) = %$xmlref; |
| 342 |
# check if we need to create a new rrd |
| 343 |
if( ! -f "$rrddir/$machine/$type.rrd") { |
| 344 |
my(@createdata); |
| 345 |
# pull the details out of the data we've been given |
| 346 |
foreach my $dataitem (@data) { |
| 347 |
if($dataitem =~ /^\S+:(\S+):(\S+)$/) { |
| 348 |
push @createdata, "$1:$2"; |
| 349 |
} |
| 350 |
} |
| 351 |
# call the &makerrd to actually create the rrd |
| 352 |
print "making new rrd for $rrddir/$machine/$type.rrd\n"; |
| 353 |
&makerrd($machine, $type, $date, $step, @createdata); |
| 354 |
} |
| 355 |
# get the details out of the data we've been given |
| 356 |
my($updateparams) = "$date"; |
| 357 |
foreach my $dataitem (@data) { |
| 358 |
if($dataitem =~ /^(\S+):\S+:\S+$/) { |
| 359 |
# pull the values straight out of the xmlhash |
| 360 |
my($value) = $xmlhash{$1}; |
| 361 |
# if it's undefined we'll set it to 0 |
| 362 |
# this probably shouldn't happen, but it'd be best to handle it "nicely" :) |
| 363 |
$value = "0" if not defined $value; |
| 364 |
$updateparams .= ":$value"; |
| 365 |
} |
| 366 |
} |
| 367 |
# perform the update |
| 368 |
RRDs::update ("$rrddir/$machine/$type.rrd", $updateparams); |
| 369 |
my($err) = RRDs::error; |
| 370 |
print STDERR "Error updating $rrddir/$machine/$type.rrd: $err\n" if $err; |
| 371 |
} |
| 372 |
|
| 373 |
# |
| 374 |
# sub to create a new rrd file |
| 375 |
# |
| 376 |
# $machine = name of the machine |
| 377 |
# (eg. kernow.ukc.ac.uk) |
| 378 |
# $type = the type of graph for the machine |
| 379 |
# (eg. cpu) |
| 380 |
# $start = the date of the first item we want to add |
| 381 |
# (in seconds since the epoch) |
| 382 |
# $step = the interval at which the database steps |
| 383 |
# @data = the data items we want to put in the rrd |
| 384 |
# in the form: $dsname:dstype |
| 385 |
# (eg. "size:GAUGE") |
| 386 |
# |
| 387 |
sub makerrd() { |
| 388 |
my($machine, $type, $start, $step, @data) = @_; |
| 389 |
# check if directory exists for rrd |
| 390 |
if(! -d "$rrddir/$machine") { |
| 391 |
# not sure on this umask, but it seems to work? |
| 392 |
mkdir "$rrddir/$machine", 0777; |
| 393 |
} |
| 394 |
my(@rrdcmd); |
| 395 |
# we'll want to add our first data item at $start, |
| 396 |
# so we start our rrd $step before that. |
| 397 |
$start -= $step; |
| 398 |
push @rrdcmd, "$rrddir/$machine/$type.rrd"; |
| 399 |
push @rrdcmd, "--start=$start"; |
| 400 |
push @rrdcmd, "--step=$step"; |
| 401 |
foreach my $dataitem (@data) { |
| 402 |
# dataitem should be: "dsname:dstype" |
| 403 |
if($dataitem =~ /^(\S+):(\S+)$/) { |
| 404 |
push @rrdcmd, "DS:$1:$2:600:U:U"; |
| 405 |
} |
| 406 |
} |
| 407 |
push @rrdcmd, ( |
| 408 |
# 3h in 15s samples |
| 409 |
"RRA:AVERAGE:0.5:1:720", |
| 410 |
"RRA:MAX:0.5:1:720", |
| 411 |
# 1d in 2m samples |
| 412 |
"RRA:AVERAGE:0.5:8:720", |
| 413 |
"RRA:MAX:0.5:8:720", |
| 414 |
# 1w in 15m samples |
| 415 |
"RRA:AVERAGE:0.5:60:672", |
| 416 |
"RRA:MAX:0.5:60:672", |
| 417 |
# 1m in 1hr samples |
| 418 |
"RRA:AVERAGE:0.5:240:744", |
| 419 |
"RRA:MAX:0.5:240:744", |
| 420 |
# 1y in 12hr samples |
| 421 |
"RRA:AVERAGE:0.5:2880:730", |
| 422 |
"RRA:MAX:0.5:2880:730", |
| 423 |
); |
| 424 |
RRDs::create (@rrdcmd); |
| 425 |
my($err) = RRDs::error; |
| 426 |
print STDERR "Error creating rrd for $rrddir/$machine/$type: $err\n" if $err; |
| 427 |
} |
