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root/i-scream/projects/cms/source/host/ihost-perl/ihost.pl

Comparing projects/cms/source/host/ihost-perl/ihost.pl (file contents):
Revision 1.11 by pjm2, Thu Feb 1 09:10:52 2001 UTC vs.
Revision 1.50 by tdb, Tue May 21 16:47:11 2002 UTC

#	Line 1 | Line 1
1		#!/usr/bin/perl -w
2
3	+	#
4	+	# i-scream central monitoring system
5	+	# http://www.i-scream.org.uk
6	+	# Copyright (C) 2000-2002 i-scream
7	+	#
8	+	# This program is free software; you can redistribute it and/or
9	+	# modify it under the terms of the GNU General Public License
10	+	# as published by the Free Software Foundation; either version 2
11	+	# of the License, or (at your option) any later version.
12	+	#
13	+	# This program is distributed in the hope that it will be useful,
14	+	# but WITHOUT ANY WARRANTY; without even the implied warranty of
15	+	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
16	+	# GNU General Public License for more details.
17	+	#
18	+	# You should have received a copy of the GNU General Public License
19	+	# along with this program; if not, write to the Free Software
20	+	# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
21	+	#
22	+
23		# -----------------------------------------------------------
24		# Perl i-scream Host.
25	+	# http://www.i-scream.org.uk
26		#
27		# An all-in-one script to act as an i-scream host on
28	<	# a typical Unix/Linux box.  You may adapt the data-gathering
8	<	# methods as you see fit.
9	<	#  - pjm2@ukc.ac.uk
28	>	# a typical Unix/Linux box.
29		#
30		# $Author$
31		# $Id$
#	Line 31 | Line 50 | use vars qw (
50		$tcp_port
51		$filter_addr
52		$file_list
53	+	$fqdn
54	+	$pidfile
55	+	$retry_wait
56	+	$ostype
57	+	$key
58	+	@data
59		);
60
61		if (@ARGV != 2) {
#	Line 41 | Line 66 | $filter_manager_addr = $ARGV[0];
66		$filter_manager_port = $ARGV[1];
67
68		$seq_no = 1;
69	+	$retry_wait = 60;
70
71	+	# work out our platform, if we can.
72	+	$ostype = `uname -s`;
73	+	chomp $ostype;
74	+	$ostype = "unknown" if not defined $ostype;
75	+
76	+	# write our PID to a file
77	+	# use home dir by default
78	+	#$pidfile = $ENV{"HOME"};
79	+	# or drop it in /var/tmp if we can't find HOME
80	+	$pidfile = "/var/tmp" if not defined $pidfile;
81	+	$pidfile .= "/.ihost.pid";
82	+	&write_pid();
83	+
84		&tcp_configure();
85	+	&send_tcp_heartbeat();
86		&send_udp_packet();
87
88		$last_udp_time = time;
#	Line 66 | Line 106 | while (1) {
106		else {
107		$delay = $next_tcp;
108		}
109	<	`sleep $delay`;
109	>	sleep $delay;
110		}
111
112	+	# we'll probably never get here...
113	+	`rm -f $pidfile`;
114		exit(0);
115
116	+
117	+	#-----------------------------------------------------------------------
118	+	# wait_then_retry
119	+	# Waits for the period of time specified in $retry_wait, then attempts
120	+	# to reconfigure with the server.
121	+	#-----------------------------------------------------------------------
122	+	sub wait_then_retry() {
123	+	print "Will retry configuration with filter manager in $retry_wait seconds.\n";
124	+	sleep $retry_wait;
125	+	}
126	+
127	+
128	+	#-----------------------------------------------------------------------
129	+	# tcp_configure
130	+	# Establishes a TCP connection to the specified i-scream filter manager.
131	+	# The host then requests details from the server, such as the intervals
132	+	# at which to send UDP packets.
133	+	#-----------------------------------------------------------------------
134		sub tcp_configure() {
135
136	<	my($sock) = new IO::Socket::INET(
137	<	PeerAddr => $filter_manager_addr,
138	<	PeerPort => $filter_manager_port,
139	<	Proto => 'tcp'
140	<	);
141	<	if (!defined $sock) {
142	<	print "IHOST ERROR: Could not connect to $filter_manager_addr:$filter_manager_port.\n";
143	<	print "Please check that there is an i-scream server at this address.\n";
144	<	print "Program ended.\n";
145	<	exit(1);
146	<	}
136	>	while (1) {
137	>	my($sock) = new IO::Socket::INET(
138	>	PeerAddr => $filter_manager_addr,
139	>	PeerPort => $filter_manager_port,
140	>	Proto => 'tcp'
141	>	) or die "Cannot connect!";
142	>	if (!defined $sock) {
143	>	print "IHOST ERROR: Could not connect to $filter_manager_addr:$filter_manager_port.\n";
144	>	print "Please check that there is an i-scream server at this address.\n";
145	>	wait_then_retry();
146	>	next;
147	>	}
148
149	<	# Now run through the configuration process.
150	<	my($response);
149	>	# Now run through the configuration process...
150	>	my($response);
151
152	<	print $sock "STARTCONFIG\n";
153	<	$response = <$sock>;
154	<	if (!chop $response eq "OK") {
155	<	print "The i-scream server rejected the STARTCONFIG command.  Terminated.";
156	<	exit(1);
157	<	}
152	>	print $sock "STARTCONFIG\n";
153	>	$response = <$sock>;
154	>	if ($response && !($response eq "OK\n")) {
155	>	print "The i-scream server rejected the STARTCONFIG command.\n";
156	>	close($sock);
157	>	wait_then_retry();
158	>	next;
159	>	}
160
161	<	print "Config started okay.\n";
161	>	print "Config started okay.\n";
162
163	<	print $sock "LASTMODIFIED\n";
164	<	$response = <$sock>;
165	<	chop $response;
166	<	$last_modified = $response;
163	>	print $sock "LASTMODIFIED\n";
164	>	$response = <$sock>;
165	>	if (!$response || $response eq "ERROR\n") {
166	>	print "The i-scream server did not provide the LASTMODIFIED value.\n";
167	>	close($sock);
168	>	wait_then_retry();
169	>	next;
170	>	}
171	>	chomp $response;
172	>	$last_modified = $response;
173
174	<	print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";
174	>	print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";
175
176	<	print $sock "FILELIST\n";
177	<	$response = <$sock>;
178	<	chop $response;
179	<	$file_list = $response;
176	>	print $sock "FILELIST\n";
177	>	$response = <$sock>;
178	>	if (!$response || $response eq "ERROR\n") {
179	>	print "The i-scream server did not provide a configuration file list.\n";
180	>	close($sock);
181	>	wait_then_retry();
182	>	next;
183	>	}
184	>	chomp $response;
185	>	$file_list = $response;
186
187	<	print "File list obtained: $file_list\n";
187	>	print "File list obtained: $file_list\n";
188
189	<	print $sock "UDPUpdateTime\n";
190	<	$response = <$sock>;
191	<	chop $response;
192	<	$udp_update_time = $response;
189	>	print $sock "FQDN\n";
190	>	$response = <$sock>;
191	>	if (!$response || $response eq "ERROR\n") {
192	>	print "The i-scream server did not tell us our FQDN.\n";
193	>	close($sock);
194	>	wait_then_retry();
195	>	next;
196	>	}
197	>	chomp $response;
198	>	$fqdn = $response;
199
200	<	print $sock "TCPUpdateTime\n";
201	<	$response = <$sock>;
202	<	chop $response;
203	<	$tcp_update_time = $response;
200	>	print "FQDN returned: $fqdn\n";
201	>
202	>	print $sock "UDPUpdateTime\n";
203	>	$response = <$sock>;
204	>	if (!$response || $response eq "ERROR\n") {
205	>	print "The i-scream server did not give us a UDPUpdateTime.\n";
206	>	close($sock);
207	>	wait_then_retry();
208	>	next;
209	>	}
210	>	chomp $response;
211	>	$udp_update_time = $response;
212	>
213	>	print $sock "TCPUpdateTime\n";
214	>	$response = <$sock>;
215	>	if (!$response || $response eq "ERROR\n") {
216	>	print "The i-scream server did not give us a TCPUpdateTime.\n";
217	>	close($sock);
218	>	wait_then_retry();
219	>	next;
220	>	}
221	>	chomp $response;
222	>	$tcp_update_time = $response;
223
224	<	print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";
224	>	print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";
225
226	<	print $sock "ENDCONFIG\n";
227	<	$response = <$sock>;
228	<	chomp $response;
229	<	if (!$response eq "OK") {
230	<	print "ENDCONFIG command to server failed.  Terminated.\n";
231	<	exit(1);
232	<	}
226	>	print $sock "ENDCONFIG\n";
227	>	$response = <$sock>;
228	>	if ($response && !($response eq "OK\n")) {
229	>	print "ENDCONFIG command to server failed.  Terminated.\n";
230	>	close($sock);
231	>	wait_then_retry();
232	>	next;
233	>	}
234
235	<	print "Config ended.\n";
235	>	print "Config ended.\n";
236
237	<	print $sock "FILTER\n";
238	<	$response = <$sock>;
239	<	chop $response;
240	<	$response =~ /(.*);(.*);(.*)/;
241	<	($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
237	>	print $sock "FILTER\n";
238	>	$response = <$sock>;
239	>	if (!$response) {
240	>	print "Failed: Could not get a filter address from the filter manager.\n";
241	>	close($sock);
242	>	wait_then_retry();
243	>	next;
244	>	}
245	>	chomp $response;
246	>	if ($response eq "ERROR") {
247	>	print "There are no active configured filters for your host.\n";
248	>	close($sock);
249	>	wait_then_retry();
250	>	next;
251	>	}
252	>	$response =~ /^(.*);(.*);(.*)/;
253	>	($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
254	>	unless (defined($filter_addr) && defined($udp_port) && defined($tcp_port)) {
255	>	print "Failed: Filter address response from server did not make sense: $response\n";
256	>	close($sock);
257	>	wait_then_retry();
258	>	next;
259	>	}
260
261	<	print "Got filter data ($filter_addr, $udp_port, $tcp_port)\n";
261	>	print "Got filter data ($filter_addr, $udp_port, $tcp_port)\n";
262
263	<	print $sock "END\n";
264	<	$response = <$sock>;
265	<	chop $response;
266	<	if ($response eq "OK") {
267	<	print "Host successfully configured via TCP.\n"
268	<	}
269	<	else {
270	<	print "The server failed the host configuration on the END command.";
271	<	exit(1);
272	<	}
263	>	print $sock "END\n";
264	>	$response = <$sock>;
265	>	if ($response && ($response eq "OK\n")) {
266	>	print "Host successfully configured via TCP.\n"
267	>	}
268	>	else {
269	>	print "The server failed the host configuration on the END command.\n";
270	>	close($sock);
271	>	wait_then_retry();
272	>	next;
273	>	}
274
275	<	close($sock);
275	>	close($sock);
276
277	<	print "Configuration finished sucessfully!\n";
277	>	print "Configuration finished sucessfully!\n";
278	>	last;
279	>	}
280	>	return;
281		}
282
283	+
284	+	#-----------------------------------------------------------------------
285	+	# send_udp_packet
286	+	# Sends a UDP packet to an i-scream filter.
287	+	# The packet contains XML markup describing some of the machine's state.
288	+	# Receipt of UDP packets is not guaranteed.
289	+	#-----------------------------------------------------------------------
290		sub send_udp_packet() {
291
292	<	my(@statgrab) = `./statgrab.pl`;
293	<	my(%packet);
294	<	for (my($i) = 0; $i < $#statgrab; $i++) {
295	<	$statgrab[$i] =~ /^([^\s]*) (.*)$/;
296	<	$packet{$1} = $2;
292	>	my($plugins_dir) = "plugins";
293	>
294	>	opendir PLUGINS, $plugins_dir;
295	>	my(@plugins) = readdir PLUGINS;
296	>	foreach my $plugin (@plugins) {
297	>	push @data, `$plugins_dir/$plugin $ostype` if -x "$plugins_dir/$plugin" && -f "$plugins_dir/$plugin";
298		}
299
300	+	# get some extra data
301		my($date) = time;
302	+	my($ip);
303	+	$ip = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost') or $ip = 'localhost';
304
305	<	my($disk_info) = "<disk>";
306	<	my($i) = 0;
307	<	while (defined $packet{"packet.disk.p$i.attributes.mount"}) {
308	<	$disk_info .= "<p$i>";
309	<	$disk_info .= qq/<name>$packet{"packet.disk.p$i.attributes.name"}<\/name>/;
310	<	$disk_info .= qq/<kbytes>$packet{"packet.disk.p$i.attributes.kbytes"}<\/kbytes>/;
311	<	$disk_info .= qq/<used>$packet{"packet.disk.p$i.attributes.used"}<\/used>/;
178	<	$disk_info .= qq/<avail>$packet{"packet.disk.p$i.attributes.avail"}<\/avail>/;
179	<	$disk_info .= qq/<mount>$packet{"packet.disk.p$i.attributes.mount"}<\/mount>/;
180	<	$disk_info .= "</p$i>";
181	<	++$i;
182	<	}
183	<	$disk_info .= "</disk>";
184	<
185	<	my($hostname) = hostname();
186	<	$hostname =~ s/\..*$//g;
187	<	`cat /etc/resolv.conf` =~ /domain\s+([^\s]+)/;
188	<	my($domainname) = $1;
189	<	my($machine_name) = "$hostname.$domainname";
190	<	my($ip) = inet_ntoa(scalar(gethostbyname($hostname)) || 'localhost');
191	<
192	<	# Build the XML packet this way, as we can clearly
193	<	# see the structure and contents... I like this ;-)
194	<	my($xml) = <<EOF;
305	>	# add some extra data to the array
306	>	push(@data, "packet.attributes.seq_no $seq_no");
307	>	push(@data, "packet.attributes.machine_name $fqdn");
308	>	push(@data, "packet.attributes.date $date");
309	>	push(@data, "packet.attributes.type data");
310	>	push(@data, "packet.attributes.ip $ip");
311	>	push(@data, "packet.attributes.key $key");
312
313	<	<packet seq_no="$seq_no" machine_name="$machine_name" date="$date" type="data" ip="$ip">
314	<	<load>
198	<	<load1>$packet{"packet.load.load1"}</load1>
199	<	<load5>$packet{"packet.load.load5"}</load5>
200	<	<load15>$packet{"packet.load.load15"}</load15>
201	<	</load>
202	<	<os>
203	<	<name>$packet{"packet.os.name"}</name>
204	<	<release>$packet{"packet.os.release"}</release>
205	<	<platform>$packet{"packet.os.platform"}</platform>
206	<	<sysname>$packet{"packet.os.sysname"}</sysname>
207	<	<version>$packet{"packet.os.version"}</version>
208	<	<uptime>$packet{"packet.os.uptime"}</uptime>
209	<	</os>
210	<	<users>
211	<	<count>$packet{"packet.users.count"}</count>
212	<	<list>$packet{"packet.users.list"}</list>
213	<	</users>
214	<	<processes>
215	<	<total>$packet{"packet.processes.total"}</total>
216	<	<sleeping>$packet{"packet.processes.sleeping"}</sleeping>
217	<	<zombie>$packet{"packet.processes.zombie"}</zombie>
218	<	<stopped>$packet{"packet.processes.stopped"}</stopped>
219	<	<cpu>$packet{"packet.processes.cpu"}</cpu>
220	<	</processes>
221	<	<cpu>
222	<	<idle>$packet{"packet.cpu.idle"}</idle>
223	<	<user>$packet{"packet.cpu.user"}</user>
224	<	<kernel>$packet{"packet.cpu.kernel"}</kernel>
225	<	<iowait>$packet{"packet.cpu.iowait"}</iowait>
226	<	<swap>$packet{"packet.cpu.swap"}</swap>
227	<	</cpu>
228	<	<memory>
229	<	<total>$packet{"packet.memory.real"}</total>
230	<	<free>$packet{"packet.memory.free"}</free>
231	<	</memory>
232	<	<swap>
233	<	<total>$packet{"packet.memory.swap_total"}</total>
234	<	<free>$packet{"packet.memory.swap_free"}</free>
235	<	</swap>
236	<	$disk_info
237	<	</packet>
313	>	# sort the data
314	>	@data = sort(grep(!/^$/, grep(/^packet\./, @data)));
315
316	<	EOF
316	>	# turn the array into some nice XML
317	>	my($xml) = &make_xml("", "");
318
241	–	$xml =~ s/\n\s*//g;
242	–
319		my($sock) = new IO::Socket::INET (
320		PeerPort => $udp_port,
321		PeerAddr => $filter_addr,
322		Proto => 'udp'
323	<	) or die "Socket: $!\n";
324	<
323	>	) or die "Could not send UDP: $!\n";
324	>
325		print $sock $xml or die "Could not send UDP packet: $!\n";
326		close($sock);
327		$seq_no++;
328		print "-";
329	+
330	+	return;
331		}
332
333	+
334	+	#-----------------------------------------------------------------------
335	+	# send_tcp_heartbeat
336	+	# Establishes a TCP connection to an i-scream filter.
337	+	# The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
338	+	# If we need to reconfigure, then we complete the heartbeat before
339	+	# doing so.
340	+	#-----------------------------------------------------------------------
341		sub send_tcp_heartbeat() {
342
343	+	my ($doReconfigure) = 0;
344	+
345		my($sock) = new IO::Socket::INET(
346		PeerAddr => $filter_addr,
347		PeerPort => $tcp_port,
348		Proto => 'tcp'
349	<	);
349	>	) or return;
350		if (!defined $sock) {
351		print "IHOST WARNING: Failed to deliver a heartbeat to the i-scream filter.\n";
352	+	&tcp_configure();
353		return;
354		}
355
#	Line 269 | Line 358 | sub send_tcp_heartbeat() {
358
359		print $sock "HEARTBEAT\n";
360		$response = <$sock>;
361	<	chop $response;
273	<	if (!$response eq "OK") {
361	>	if (!$response eq "OK\n") {
362		close($sock);
363		print "Server gave wrong response to HEARTBEAT: $response\n";
364	+	&tcp_configure();
365		return;
366		}
367
368		print $sock "CONFIG\n";
369		$response = <$sock>;
370	<	chop $response;
282	<	if (!$response eq "OK") {
370	>	if (!$response eq "OK\n") {
371		close($sock);
372		print "Server gave wrong response to CONFIG: $response\n";
373	+	&tcp_configure();
374		return;
375		}
376
377		print $sock "$file_list\n";
378		$response = <$sock>;
379	<	chop $response;
291	<	if (!$response eq "OK") {
379	>	if (!$response eq "OK\n") {
380		close($sock);
381		print "Server gave wrong response to file list: $response\n";
382	+	&tcp_configure();
383		return;
384		}
385
386		print $sock "$last_modified\n";
387		$response = <$sock>;
388	<	chop $response;
300	<	if ($response eq "ERROR") {
388	>	if ($response eq "ERROR\n") {
389		close($sock);
390	<	&tcp_configure();
391	<	return;
390	>	print "Server configuration changed.  Reconfiguring with filter manager.\n";
391	>	$doReconfigure = 1;
392		}
393	<	if (!$response eq "OK") {
393	>	if (!$response eq "OK\n") {
394		close($sock);
395		print "Server gave wrong response to HEARTBEAT: $response\n";
396	+	&tcp_configure();
397		return;
398		}
399
400	+	print $sock "KEY\n";
401	+	$key = <$sock>;
402	+
403		print $sock "ENDHEARTBEAT\n";
404		$response = <$sock>;
405	<	chop $response;
314	<	if (!$response eq "OK") {
405	>	if (!$response eq "OK\n") {
406		close($sock);
407		print "Server gave wrong response to ENDHEARTBEAT: $response\n";
408	+	&tcp_configure();
409		return;
410		}
411
412		close($sock);
413		print "^";
414	+
415	+	&tcp_configure() if $doReconfigure;
416	+
417	+	return;
418	+	}
419	+
420	+
421	+	#-----------------------------------------------------------------------
422	+	# write_pid
423	+	# Writes the PID (process ID) of this instance to $pidfile.
424	+	# This is then used by a seperate script to check (and restart) ihost.
425	+	#-----------------------------------------------------------------------
426	+	sub write_pid() {
427	+	open PID, ">$pidfile";
428	+	print PID $$;
429	+	close PID;
430	+
431	+	return;
432	+	}
433	+
434	+	#-----------------------------------------------------------------------
435	+	# make_xml
436	+	# Turns an array of plugins data into an XML string.
437	+	#-----------------------------------------------------------------------
438	+	sub make_xml() {
439	+	my($curlevel, $curline) = @_;
440	+	my($xmltemp) = ""; my($curtag) = ""; my($attributes) = "";
441	+	while(1) {
442	+	$curline = shift(@data) if $curline eq "";
443	+	return $xmltemp if not defined $curline;
444	+	chomp $curline;
445	+	# dealing with nest (or attributes)
446	+	if($curline =~ /^$curlevel([^\.\s]+\.)/) {
447	+	$curtag=$1;
448	+	if($curline =~ /^$curlevel$curtag([^\.\s]+)\s+(.*)$/) {
449	+	$xmltemp .= &make_xml("$curlevel$curtag", $curline);
450	+	}
451	+	elsif($curline =~ /^$curlevel$curtag(attributes)\.([^\.\s]+)\s+(.*)$/) {
452	+	$attributes .= " $2=\"$3\"";
453	+	}
454	+	else {
455	+	$xmltemp .= &make_xml("$curlevel$curtag", $curline);
456	+	}
457	+	my($nextline) = $data[0]; chomp $nextline if defined $nextline;
458	+	$curtag =~ s/(.*)\./$1/;
459	+	if((defined $nextline) && ($nextline =~ /^$curlevel$curtag\./)) {
460	+	$curline = "";
461	+	}
462	+	else {
463	+	$xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
464	+	return $xmltemp;
465	+	}
466	+	}
467	+	# dealing with value
468	+	elsif($curline =~ /^$curlevel([^\.\s]+)\s+(.*)$/) {
469	+	$curtag=$1;
470	+	$xmltemp=$2;
471	+	my($nextline) = $data[0]; chomp $nextline if defined $nextline;
472	+	if(defined $nextline && ($nextline =~ /^$curlevel$curtag\./ || $nextline =~ /^$curlevel$curtag\s+/)) {
473	+	$curline = "";
474	+	}
475	+	else {
476	+	$xmltemp = "<$curtag$attributes>$xmltemp</$curtag>" unless $curtag eq "";
477	+	return $xmltemp;
478	+	}
479	+	}
480	+	# dealing with a null value
481	+	elsif($curline =~ /^$curlevel([^\.\s]+)$/) {
482	+	# simply adding a space makes the above elsif deal with it :)
483	+	# just level with an empty tag in the XML
484	+	$curline .= " ";
485	+	}
486	+	# failing all that, skip the line
487	+	else {
488	+	$curline = "";
489	+	}
490	+	}
491		}

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