| 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 |
|
# Perl i-scream Host. |
| 24 |
|
# http://www.i-scream.org.uk |
| 25 |
|
# |
| 26 |
|
# An all-in-one script to act as an i-scream host on |
| 27 |
< |
# a typical Unix/Linux box. You may adapt the data-gathering |
| 9 |
< |
# methods as you see fit. |
| 10 |
< |
# - pjm2@ukc.ac.uk |
| 27 |
> |
# a typical Unix/Linux box. |
| 28 |
|
# |
| 29 |
|
# $Author$ |
| 30 |
|
# $Id$ |
| 52 |
|
$fqdn |
| 53 |
|
$pidfile |
| 54 |
|
$retry_wait |
| 55 |
+ |
$ostype |
| 56 |
+ |
$key |
| 57 |
+ |
@data |
| 58 |
|
); |
| 59 |
|
|
| 60 |
|
if (@ARGV != 2) { |
| 67 |
|
$seq_no = 1; |
| 68 |
|
$retry_wait = 60; |
| 69 |
|
|
| 70 |
+ |
# work out our platform, if we can. |
| 71 |
+ |
$ostype = `uname -s`; |
| 72 |
+ |
chomp $ostype; |
| 73 |
+ |
$ostype = "unknown" if not defined $ostype; |
| 74 |
+ |
|
| 75 |
|
# write our PID to a file |
| 76 |
< |
$pidfile = "/var/tmp/ihost.pid"; |
| 76 |
> |
# use home dir by default |
| 77 |
> |
#$pidfile = $ENV{"HOME"}; |
| 78 |
> |
# or drop it in /var/tmp if we can't find HOME |
| 79 |
> |
$pidfile = "/var/tmp" if not defined $pidfile; |
| 80 |
> |
$pidfile .= "/.ihost.pid"; |
| 81 |
|
&write_pid(); |
| 82 |
|
|
| 83 |
|
&tcp_configure(); |
| 84 |
+ |
&send_tcp_heartbeat(); |
| 85 |
|
&send_udp_packet(); |
| 86 |
|
|
| 87 |
|
$last_udp_time = time; |
| 105 |
|
else { |
| 106 |
|
$delay = $next_tcp; |
| 107 |
|
} |
| 108 |
< |
`sleep $delay`; |
| 108 |
> |
sleep $delay; |
| 109 |
|
} |
| 110 |
|
|
| 111 |
|
# we'll probably never get here... |
| 120 |
|
#----------------------------------------------------------------------- |
| 121 |
|
sub wait_then_retry() { |
| 122 |
|
print "Will retry configuration with filter manager in $retry_wait seconds.\n"; |
| 123 |
< |
`sleep $retry_wait`; |
| 123 |
> |
sleep $retry_wait; |
| 124 |
|
} |
| 125 |
|
|
| 126 |
|
|
| 161 |
|
|
| 162 |
|
print $sock "LASTMODIFIED\n"; |
| 163 |
|
$response = <$sock>; |
| 164 |
< |
if (!$response) { |
| 165 |
< |
print "The i-scream server did not return anything for the LASTMODIFIED command.\n"; |
| 164 |
> |
if (!$response || $response eq "ERROR\n") { |
| 165 |
> |
print "The i-scream server did not provide the LASTMODIFIED value.\n"; |
| 166 |
|
close($sock); |
| 167 |
|
wait_then_retry(); |
| 168 |
|
next; |
| 169 |
|
} |
| 170 |
< |
chop $response; |
| 170 |
> |
chomp $response; |
| 171 |
|
$last_modified = $response; |
| 172 |
|
|
| 173 |
|
print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n"; |
| 174 |
|
|
| 175 |
|
print $sock "FILELIST\n"; |
| 176 |
|
$response = <$sock>; |
| 177 |
< |
if (!$response) { |
| 177 |
> |
if (!$response || $response eq "ERROR\n") { |
| 178 |
|
print "The i-scream server did not provide a configuration file list.\n"; |
| 179 |
|
close($sock); |
| 180 |
|
wait_then_retry(); |
| 181 |
|
next; |
| 182 |
|
} |
| 183 |
< |
chop $response; |
| 183 |
> |
chomp $response; |
| 184 |
|
$file_list = $response; |
| 185 |
|
|
| 186 |
|
print "File list obtained: $file_list\n"; |
| 187 |
|
|
| 188 |
|
print $sock "FQDN\n"; |
| 189 |
|
$response = <$sock>; |
| 190 |
< |
if (!$response) { |
| 190 |
> |
if (!$response || $response eq "ERROR\n") { |
| 191 |
|
print "The i-scream server did not tell us our FQDN.\n"; |
| 192 |
|
close($sock); |
| 193 |
|
wait_then_retry(); |
| 194 |
|
next; |
| 195 |
|
} |
| 196 |
< |
chop $response; |
| 196 |
> |
chomp $response; |
| 197 |
|
$fqdn = $response; |
| 198 |
|
|
| 199 |
|
print "FQDN returned: $fqdn\n"; |
| 200 |
|
|
| 201 |
|
print $sock "UDPUpdateTime\n"; |
| 202 |
|
$response = <$sock>; |
| 203 |
< |
if (!$response) { |
| 203 |
> |
if (!$response || $response eq "ERROR\n") { |
| 204 |
|
print "The i-scream server did not give us a UDPUpdateTime.\n"; |
| 205 |
|
close($sock); |
| 206 |
|
wait_then_retry(); |
| 207 |
|
next; |
| 208 |
|
} |
| 209 |
< |
chop $response; |
| 209 |
> |
chomp $response; |
| 210 |
|
$udp_update_time = $response; |
| 211 |
|
|
| 212 |
|
print $sock "TCPUpdateTime\n"; |
| 213 |
|
$response = <$sock>; |
| 214 |
< |
if (!$response) { |
| 214 |
> |
if (!$response || $response eq "ERROR\n") { |
| 215 |
|
print "The i-scream server did not give us a TCPUpdateTime.\n"; |
| 216 |
|
close($sock); |
| 217 |
|
wait_then_retry(); |
| 218 |
|
next; |
| 219 |
|
} |
| 220 |
< |
chop $response; |
| 220 |
> |
chomp $response; |
| 221 |
|
$tcp_update_time = $response; |
| 222 |
|
|
| 223 |
|
print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n"; |
| 241 |
|
wait_then_retry(); |
| 242 |
|
next; |
| 243 |
|
} |
| 244 |
< |
chop $response; |
| 215 |
< |
$response =~ /^(.*);(.*);(.*)/; |
| 244 |
> |
chomp $response; |
| 245 |
|
if ($response eq "ERROR") { |
| 246 |
|
print "There are no active configured filters for your host.\n"; |
| 247 |
|
close($sock); |
| 248 |
|
wait_then_retry(); |
| 249 |
|
next; |
| 250 |
|
} |
| 251 |
+ |
$response =~ /^(.*);(.*);(.*)/; |
| 252 |
|
($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3); |
| 253 |
|
unless (defined($filter_addr) && defined($udp_port) && defined($tcp_port)) { |
| 254 |
|
print "Failed: Filter address response from server did not make sense: $response\n"; |
| 280 |
|
} |
| 281 |
|
|
| 282 |
|
|
| 253 |
– |
|
| 254 |
– |
|
| 283 |
|
#----------------------------------------------------------------------- |
| 284 |
|
# send_udp_packet |
| 285 |
|
# Sends a UDP packet to an i-scream filter. |
| 288 |
|
#----------------------------------------------------------------------- |
| 289 |
|
sub send_udp_packet() { |
| 290 |
|
|
| 291 |
< |
my(@statgrab) = `./statgrab.pl`; |
| 292 |
< |
my(%packet); |
| 293 |
< |
for (my($i) = 0; $i <= $#statgrab; $i++) { |
| 294 |
< |
$statgrab[$i] =~ /^([^\s]*) (.*)$/; |
| 295 |
< |
$packet{$1} = $2; |
| 291 |
> |
my($plugins_dir) = "plugins"; |
| 292 |
> |
|
| 293 |
> |
opendir PLUGINS, $plugins_dir; |
| 294 |
> |
my(@plugins) = readdir PLUGINS; |
| 295 |
> |
foreach my $plugin (@plugins) { |
| 296 |
> |
push @data, `$plugins_dir/$plugin $ostype` if -x "$plugins_dir/$plugin" && -f "$plugins_dir/$plugin"; |
| 297 |
|
} |
| 298 |
|
|
| 299 |
+ |
# get some extra data |
| 300 |
|
my($date) = time; |
| 271 |
– |
|
| 272 |
– |
my($disk_info) = "<disk>"; |
| 273 |
– |
my($i) = 0; |
| 274 |
– |
while (defined $packet{"packet.disk.p$i.attributes.mount"}) { |
| 275 |
– |
$disk_info .= "<p$i"; |
| 276 |
– |
$disk_info .= " name=\"" . $packet{"packet.disk.p$i.attributes.name"} . "\""; |
| 277 |
– |
$disk_info .= " kbytes=\"" . $packet{"packet.disk.p$i.attributes.kbytes"} . "\""; |
| 278 |
– |
$disk_info .= " used=\"" . $packet{"packet.disk.p$i.attributes.used"} . "\""; |
| 279 |
– |
$disk_info .= " avail=\"" . $packet{"packet.disk.p$i.attributes.avail"} . "\""; |
| 280 |
– |
$disk_info .= " mount=\"" . $packet{"packet.disk.p$i.attributes.mount"} . "\""; |
| 281 |
– |
$disk_info .= "></p$i>"; |
| 282 |
– |
++$i; |
| 283 |
– |
} |
| 284 |
– |
$disk_info .= "</disk>"; |
| 285 |
– |
|
| 301 |
|
my($ip); |
| 302 |
|
$ip = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost') or $ip = 'localhost'; |
| 288 |
– |
|
| 289 |
– |
# Build the XML packet this way, as we can clearly |
| 290 |
– |
# see the structure and contents... I like this ;-) |
| 291 |
– |
# [Note that the server rejects UDP packets that are |
| 292 |
– |
# larger than 8196 bytes] |
| 293 |
– |
my($xml) = <<EOF; |
| 303 |
|
|
| 304 |
< |
<packet seq_no="$seq_no" machine_name="$fqdn" date="$date" type="data" ip="$ip"> |
| 305 |
< |
<load> |
| 306 |
< |
<load1>$packet{"packet.load.load1"}</load1> |
| 307 |
< |
<load5>$packet{"packet.load.load5"}</load5> |
| 308 |
< |
<load15>$packet{"packet.load.load15"}</load15> |
| 309 |
< |
</load> |
| 310 |
< |
<os> |
| 311 |
< |
<name>$packet{"packet.os.name"}</name> |
| 312 |
< |
<release>$packet{"packet.os.release"}</release> |
| 313 |
< |
<platform>$packet{"packet.os.platform"}</platform> |
| 305 |
< |
<sysname>$packet{"packet.os.sysname"}</sysname> |
| 306 |
< |
<version>$packet{"packet.os.version"}</version> |
| 307 |
< |
<uptime>$packet{"packet.os.uptime"}</uptime> |
| 308 |
< |
</os> |
| 309 |
< |
<users> |
| 310 |
< |
<count>$packet{"packet.users.count"}</count> |
| 311 |
< |
<list>$packet{"packet.users.list"}</list> |
| 312 |
< |
</users> |
| 313 |
< |
<processes> |
| 314 |
< |
<total>$packet{"packet.processes.total"}</total> |
| 315 |
< |
<sleeping>$packet{"packet.processes.sleeping"}</sleeping> |
| 316 |
< |
<zombie>$packet{"packet.processes.zombie"}</zombie> |
| 317 |
< |
<stopped>$packet{"packet.processes.stopped"}</stopped> |
| 318 |
< |
<cpu>$packet{"packet.processes.cpu"}</cpu> |
| 319 |
< |
</processes> |
| 320 |
< |
<cpu> |
| 321 |
< |
<idle>$packet{"packet.cpu.idle"}</idle> |
| 322 |
< |
<user>$packet{"packet.cpu.user"}</user> |
| 323 |
< |
<kernel>$packet{"packet.cpu.kernel"}</kernel> |
| 324 |
< |
<iowait>$packet{"packet.cpu.iowait"}</iowait> |
| 325 |
< |
<swap>$packet{"packet.cpu.swap"}</swap> |
| 326 |
< |
</cpu> |
| 327 |
< |
<memory> |
| 328 |
< |
<total>$packet{"packet.memory.total"}</total> |
| 329 |
< |
<free>$packet{"packet.memory.free"}</free> |
| 330 |
< |
</memory> |
| 331 |
< |
<swap> |
| 332 |
< |
<total>$packet{"packet.swap.total"}</total> |
| 333 |
< |
<free>$packet{"packet.swap.free"}</free> |
| 334 |
< |
</swap> |
| 335 |
< |
$disk_info |
| 336 |
< |
</packet> |
| 304 |
> |
# add some extra data to the array |
| 305 |
> |
push(@data, "packet.attributes.seq_no $seq_no"); |
| 306 |
> |
push(@data, "packet.attributes.machine_name $fqdn"); |
| 307 |
> |
push(@data, "packet.attributes.date $date"); |
| 308 |
> |
push(@data, "packet.attributes.type data"); |
| 309 |
> |
push(@data, "packet.attributes.ip $ip"); |
| 310 |
> |
push(@data, "packet.attributes.key $key"); |
| 311 |
> |
|
| 312 |
> |
# sort the data |
| 313 |
> |
@data = sort(grep(!/^$/, grep(/^packet\./, @data))); |
| 314 |
|
|
| 315 |
< |
EOF |
| 315 |
> |
# turn the array into some nice XML |
| 316 |
> |
my($xml) = &make_xml("", ""); |
| 317 |
|
|
| 340 |
– |
# Make the packet smaller by stripping out newlines and leading spaces. |
| 341 |
– |
$xml =~ s/\n\s*//g; |
| 342 |
– |
|
| 318 |
|
my($sock) = new IO::Socket::INET ( |
| 319 |
|
PeerPort => $udp_port, |
| 320 |
|
PeerAddr => $filter_addr, |
| 321 |
|
Proto => 'udp' |
| 322 |
|
) or die "Could not send UDP: $!\n"; |
| 323 |
< |
|
| 323 |
> |
|
| 324 |
|
print $sock $xml or die "Could not send UDP packet: $!\n"; |
| 325 |
|
close($sock); |
| 326 |
|
$seq_no++; |
| 330 |
|
} |
| 331 |
|
|
| 332 |
|
|
| 358 |
– |
|
| 359 |
– |
|
| 333 |
|
#----------------------------------------------------------------------- |
| 334 |
|
# send_tcp_heartbeat |
| 335 |
|
# Establishes a TCP connection to an i-scream filter. |
| 336 |
|
# The heartbeat is used as a guaranteed "I'm alive" delivery mechanism. |
| 337 |
+ |
# If we need to reconfigure, then we complete the heartbeat before |
| 338 |
+ |
# doing so. |
| 339 |
|
#----------------------------------------------------------------------- |
| 340 |
|
sub send_tcp_heartbeat() { |
| 341 |
|
|
| 342 |
+ |
my ($doReconfigure) = 0; |
| 343 |
+ |
|
| 344 |
|
my($sock) = new IO::Socket::INET( |
| 345 |
|
PeerAddr => $filter_addr, |
| 346 |
|
PeerPort => $tcp_port, |
| 387 |
|
if ($response eq "ERROR\n") { |
| 388 |
|
close($sock); |
| 389 |
|
print "Server configuration changed. Reconfiguring with filter manager.\n"; |
| 390 |
< |
&tcp_configure(); |
| 414 |
< |
return; |
| 390 |
> |
$doReconfigure = 1; |
| 391 |
|
} |
| 392 |
|
if (!$response eq "OK\n") { |
| 393 |
|
close($sock); |
| 396 |
|
return; |
| 397 |
|
} |
| 398 |
|
|
| 399 |
+ |
print $sock "KEY\n"; |
| 400 |
+ |
$key = <$sock>; |
| 401 |
+ |
|
| 402 |
|
print $sock "ENDHEARTBEAT\n"; |
| 403 |
|
$response = <$sock>; |
| 404 |
|
if (!$response eq "OK\n") { |
| 411 |
|
close($sock); |
| 412 |
|
print "^"; |
| 413 |
|
|
| 414 |
+ |
&tcp_configure() if $doReconfigure; |
| 415 |
+ |
|
| 416 |
|
return; |
| 417 |
|
} |
| 418 |
|
|
| 419 |
+ |
|
| 420 |
|
#----------------------------------------------------------------------- |
| 421 |
|
# write_pid |
| 422 |
|
# Writes the PID (process ID) of this instance to $pidfile. |
| 428 |
|
close PID; |
| 429 |
|
|
| 430 |
|
return; |
| 431 |
+ |
} |
| 432 |
+ |
|
| 433 |
+ |
#----------------------------------------------------------------------- |
| 434 |
+ |
# make_xml |
| 435 |
+ |
# Turns an array of plugins data into an XML string. |
| 436 |
+ |
#----------------------------------------------------------------------- |
| 437 |
+ |
sub make_xml() { |
| 438 |
+ |
my($curlevel, $curline) = @_; |
| 439 |
+ |
my($xmltemp) = ""; my($curtag) = ""; my($attributes) = ""; |
| 440 |
+ |
while(1) { |
| 441 |
+ |
$curline = shift(@data) if $curline eq ""; |
| 442 |
+ |
return $xmltemp if not defined $curline; |
| 443 |
+ |
chomp $curline; |
| 444 |
+ |
# dealing with nest (or attributes) |
| 445 |
+ |
if($curline =~ /^$curlevel([^\.\s]+\.)/) { |
| 446 |
+ |
$curtag=$1; |
| 447 |
+ |
if($curline =~ /^$curlevel$curtag([^\.\s]+)\s+(.*)$/) { |
| 448 |
+ |
$xmltemp .= &make_xml("$curlevel$curtag", $curline); |
| 449 |
+ |
} |
| 450 |
+ |
elsif($curline =~ /^$curlevel$curtag(attributes)\.([^\.\s]+)\s+(.*)$/) { |
| 451 |
+ |
$attributes .= " $2=\"$3\""; |
| 452 |
+ |
} |
| 453 |
+ |
else { |
| 454 |
+ |
$xmltemp .= &make_xml("$curlevel$curtag", $curline); |
| 455 |
+ |
} |
| 456 |
+ |
my($nextline) = $data[0]; chomp $nextline if defined $nextline; |
| 457 |
+ |
$curtag =~ s/(.*)\./$1/; |
| 458 |
+ |
if((defined $nextline) && ($nextline =~ /^$curlevel$curtag\./)) { |
| 459 |
+ |
$curline = ""; |
| 460 |
+ |
} |
| 461 |
+ |
else { |
| 462 |
+ |
$xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq ""; |
| 463 |
+ |
return $xmltemp; |
| 464 |
+ |
} |
| 465 |
+ |
} |
| 466 |
+ |
# dealing with value |
| 467 |
+ |
elsif($curline =~ /^$curlevel([^\.\s]+)\s+(.*)$/) { |
| 468 |
+ |
$curtag=$1; |
| 469 |
+ |
$xmltemp=$2; |
| 470 |
+ |
my($nextline) = $data[0]; chomp $nextline if defined $nextline; |
| 471 |
+ |
if(defined $nextline && ($nextline =~ /^$curlevel$curtag\./ || $nextline =~ /^$curlevel$curtag\s+/)) { |
| 472 |
+ |
$curline = ""; |
| 473 |
+ |
} |
| 474 |
+ |
else { |
| 475 |
+ |
$xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq ""; |
| 476 |
+ |
return $xmltemp; |
| 477 |
+ |
} |
| 478 |
+ |
} |
| 479 |
+ |
# dealing with a null value |
| 480 |
+ |
elsif($curline =~ /^$curlevel([^\.\s]+)$/) { |
| 481 |
+ |
# simply adding a space makes the above elsif deal with it :) |
| 482 |
+ |
# just level with an empty tag in the XML |
| 483 |
+ |
$curline .= " "; |
| 484 |
+ |
} |
| 485 |
+ |
# failing all that, skip the line |
| 486 |
+ |
else { |
| 487 |
+ |
$curline = ""; |
| 488 |
+ |
} |
| 489 |
+ |
} |
| 490 |
|
} |
