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Comparing projects/cms/source/host/ihost-perl/ihost.pl (file contents):
Revision 1.6 by pjm2, Fri Jan 26 17:47:18 2001 UTC vs.
Revision 1.49 by tdb, Sat May 18 18:15:56 2002 UTC

#	Line 1 | Line 1
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
8	<	# methods as you see fit.
9	<	#  - pjm2@ukc.ac.uk
27	>	# a typical Unix/Linux box.
28		#
29		# $Author$
30		# $Id$
#	Line 31 | Line 49 | use vars qw (
49		$tcp_port
50		$filter_addr
51		$file_list
52	+	$fqdn
53	+	$pidfile
54	+	$retry_wait
55	+	$ostype
56	+	$key
57	+	@data
58		);
59
60		if (@ARGV != 2) {
#	Line 41 | Line 65 | $filter_manager_addr = $ARGV[0];
65		$filter_manager_port = $ARGV[1];
66
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 $ostype;
74	+
75	+	# write our PID to a file
76	+	# use home dir by default
77	+	#$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;
88		$last_tcp_time = time;
89		while (1) {
90	<	if (time >= $last_udp_time + $udp_update_time) {
90	>	my($time) = time;
91	>	if ($time >= $last_udp_time + $udp_update_time) {
92		&send_udp_packet();
93	<	$last_udp_time = time;
93	>	$last_udp_time = $time;
94		}
95	<	if (time >= $last_tcp_time + $tcp_update_time) {
95	>	if ($time >= $last_tcp_time + $tcp_update_time) {
96		&send_tcp_heartbeat();
97	<	$last_tcp_time = time;
97	>	$last_tcp_time = $time;
98		}
99	<	`sleep 1`;
99	>	my($next_udp) = $udp_update_time - $time + $last_udp_time;
100	>	my($next_tcp) = $tcp_update_time - $time + $last_tcp_time;
101	>	my($delay);
102	>	if ($next_udp < $next_tcp) {
103	>	$delay = $next_udp
104	>	}
105	>	else {
106	>	$delay = $next_tcp;
107	>	}
108	>	sleep $delay;
109		}
110
111	+	# we'll probably never get here...
112	+	`rm -f $pidfile`;
113		exit(0);
114
115	+
116	+	#-----------------------------------------------------------------------
117	+	# wait_then_retry
118	+	# Waits for the period of time specified in $retry_wait, then attempts
119	+	# to reconfigure with the server.
120	+	#-----------------------------------------------------------------------
121	+	sub wait_then_retry() {
122	+	print "Will retry configuration with filter manager in $retry_wait seconds.\n";
123	+	sleep $retry_wait;
124	+	}
125	+
126	+
127	+	#-----------------------------------------------------------------------
128	+	# tcp_configure
129	+	# Establishes a TCP connection to the specified i-scream filter manager.
130	+	# The host then requests details from the server, such as the intervals
131	+	# at which to send UDP packets.
132	+	#-----------------------------------------------------------------------
133		sub tcp_configure() {
134
135	<	my($sock) = new IO::Socket::INET(
136	<	PeerAddr => $filter_manager_addr,
137	<	PeerPort => $filter_manager_port,
138	<	Proto => 'tcp'
139	<	) or die "Could not perform configuration via TCP: $!\n";
135	>	while (1) {
136	>	my($sock) = new IO::Socket::INET(
137	>	PeerAddr => $filter_manager_addr,
138	>	PeerPort => $filter_manager_port,
139	>	Proto => 'tcp'
140	>	) or die "Cannot connect!";
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	>	wait_then_retry();
145	>	next;
146	>	}
147
148	<	die "Could not connect to the i-scream filter manager: $!\n" unless $sock;
149	<
74	<	# Now run through the configuration process.
75	<	my($response);
148	>	# Now run through the configuration process...
149	>	my($response);
150
151	<	print $sock "STARTCONFIG\n";
152	<	$response = <$sock>;
153	<	if (!chop $response eq "OK") {
154	<	print "The i-scream server rejected the STARTCONFIG command.  Terminated.";
155	<	exit(1);
156	<	}
151	>	print $sock "STARTCONFIG\n";
152	>	$response = <$sock>;
153	>	if ($response && !($response eq "OK\n")) {
154	>	print "The i-scream server rejected the STARTCONFIG command.\n";
155	>	close($sock);
156	>	wait_then_retry();
157	>	next;
158	>	}
159
160	<	print "Config started okay.\n";
160	>	print "Config started okay.\n";
161
162	<	print $sock "LASTMODIFIED\n";
163	<	$response = <$sock>;
164	<	chop $response;
165	<	$last_modified = $response;
162	>	print $sock "LASTMODIFIED\n";
163	>	$response = <$sock>;
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	>	chomp $response;
171	>	$last_modified = $response;
172
173	<	print "Config last modified: ". scalar localtime $last_modified . "\n";
173	>	print "Config last modified: ". (scalar localtime $last_modified/1000) . "\n";
174
175	<	print $sock "FILELIST\n";
176	<	$response = <$sock>;
177	<	chop $response;
178	<	$file_list = $response;
175	>	print $sock "FILELIST\n";
176	>	$response = <$sock>;
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	>	chomp $response;
184	>	$file_list = $response;
185
186	<	print "File list obtained: $file_list\n";
186	>	print "File list obtained: $file_list\n";
187
188	<	print $sock "UDPUpdateTime\n";
189	<	$response = <$sock>;
190	<	chop $response;
191	<	$udp_update_time = $response;
188	>	print $sock "FQDN\n";
189	>	$response = <$sock>;
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	>	chomp $response;
197	>	$fqdn = $response;
198
199	<	print $sock "TCPUpdateTime\n";
200	<	$response = <$sock>;
201	<	chop $response;
202	<	$tcp_update_time = $response;
199	>	print "FQDN returned: $fqdn\n";
200	>
201	>	print $sock "UDPUpdateTime\n";
202	>	$response = <$sock>;
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	>	chomp $response;
210	>	$udp_update_time = $response;
211	>
212	>	print $sock "TCPUpdateTime\n";
213	>	$response = <$sock>;
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	>	chomp $response;
221	>	$tcp_update_time = $response;
222
223	<	print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time.\n";
223	>	print "UDP packet period: $udp_update_time seconds.\nTCP heartbeat period: $tcp_update_time seconds.\n";
224
225	<	print $sock "ENDCONFIG\n";
226	<	$response = <$sock>;
227	<	chomp $response;
228	<	if (!$response eq "OK") {
229	<	print "ENDCONFIG command to server failed.  Terminated.\n";
230	<	exit(1);
231	<	}
225	>	print $sock "ENDCONFIG\n";
226	>	$response = <$sock>;
227	>	if ($response && !($response eq "OK\n")) {
228	>	print "ENDCONFIG command to server failed.  Terminated.\n";
229	>	close($sock);
230	>	wait_then_retry();
231	>	next;
232	>	}
233
234	<	print "Config ended.\n";
234	>	print "Config ended.\n";
235
236	<	print $sock "FILTER\n";
237	<	$response = <$sock>;
238	<	chop $response;
239	<	$response =~ /(.*);(.*);(.*)/;
240	<	($filter_addr, $udp_port, $tcp_port) = ($1, $2, $3);
236	>	print $sock "FILTER\n";
237	>	$response = <$sock>;
238	>	if (!$response) {
239	>	print "Failed: Could not get a filter address from the filter manager.\n";
240	>	close($sock);
241	>	wait_then_retry();
242	>	next;
243	>	}
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: $response\n";
255	>	close($sock);
256	>	wait_then_retry();
257	>	next;
258	>	}
259
260	<	print "Got filter data ($filter_addr, $udp_port, $tcp_port)\n";
260	>	print "Got filter data ($filter_addr, $udp_port, $tcp_port)\n";
261
262	<	print $sock "END\n";
263	<	$response = <$sock>;
264	<	chop $response;
265	<	if ($response eq "OK") {
266	<	print "Host successfully configured via TCP.\n"
267	<	}
268	<	else {
269	<	print "The server failed the host configuration on the END command.";
270	<	exit(1);
271	<	}
262	>	print $sock "END\n";
263	>	$response = <$sock>;
264	>	if ($response && ($response eq "OK\n")) {
265	>	print "Host successfully configured via TCP.\n"
266	>	}
267	>	else {
268	>	print "The server failed the host configuration on the END command.\n";
269	>	close($sock);
270	>	wait_then_retry();
271	>	next;
272	>	}
273
274	<	close($sock);
274	>	close($sock);
275
276	<	print "Configuration finished sucessfully!\n";
276	>	print "Configuration finished sucessfully!\n";
277	>	last;
278	>	}
279	>	return;
280		}
281
282	+
283	+	#-----------------------------------------------------------------------
284	+	# send_udp_packet
285	+	# Sends a UDP packet to an i-scream filter.
286	+	# The packet contains XML markup describing some of the machine's state.
287	+	# Receipt of UDP packets is not guaranteed.
288	+	#-----------------------------------------------------------------------
289		sub send_udp_packet() {
290
291	<	my(@statgrab) = `./statgrab.pl`;
292	<	my(%packet);
293	<	for (my($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;
301	+	my($ip);
302	+	$ip = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost') or $ip = 'localhost';
303
304	<	my($disk_info) = "<disk>";
305	<	my($i) = 0;
306	<	while (defined $packet{"packet.disk.p$i.attributes.mount"}) {
307	<	$disk_info .= "<p$i>";
308	<	$disk_info .= qq/<name>$packet{"packet.disk.p$i.attributes.name"}<\/name>/;
309	<	$disk_info .= qq/<kbytes>$packet{"packet.disk.p$i.attributes.kbytes"}<\/kbytes>/;
310	<	$disk_info .= qq/<used>$packet{"packet.disk.p$i.attributes.used"}<\/used>/;
164	<	$disk_info .= qq/<avail>$packet{"packet.disk.p$i.attributes.avail"}<\/avail>/;
165	<	$disk_info .= qq/<mount>$packet{"packet.disk.p$i.attributes.mount"}<\/mount>/;
166	<	$disk_info .= "</p$i>";
167	<	++$i;
168	<	}
169	<	$disk_info .= "</disk>";
170	<
171	<	my($hostname) = hostname();
172	<	$hostname =~ s/\..*$//g;
173	<	my($domainname) = `cat /etc/resolv.conf`;
174	<	$domainname =~ s/domain\s*([^\s]*?)/$1/;
175	<	my($machine_name) = "$hostname.$domainname";
176	<	my($ip) = inet_ntoa(scalar(gethostbyname($hostname)) || 'localhost');
177	<
178	<	# Build the XML packet this way, as we can clearly
179	<	# see the structure and contents... I like this ;-)
180	<	my($xml) = <<EOF;
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 $key");
311
312	<	<packet seq_no="$seq_no" machine_name="$machine_name" date="$date" type="data" ip="$ip">
313	<	<load>
184	<	<load1>$packet{"packet.load.load1"}</load1>
185	<	<load5>$packet{"packet.load.load5"}</load5>
186	<	<load15>$packet{"packet.load.load15"}</load15>
187	<	</load>
188	<	<os>
189	<	<name>$packet{"packet.os.name"}</name>
190	<	<release>$packet{"packet.os.release"}</release>
191	<	<platform>$packet{"packet.os.platform"}</platform>
192	<	<sysname>$packet{"packet.os.sysname"}</sysname>
193	<	<version>$packet{"packet.os.version"}</version>
194	<	</os>
195	<	<users>
196	<	<count>$packet{"packet.users.count"}</count>
197	<	<list>$packet{"packet.users.list"}</list>
198	<	</users>
199	<	<processes>
200	<	<total>$packet{"packet.processes.total"}</total>
201	<	<sleeping>$packet{"packet.processes.sleeping"}</sleeping>
202	<	<zombie>$packet{"packet.processes.zombie"}</zombie>
203	<	<stopped>$packet{"packet.processes.stopped"}</stopped>
204	<	<cpu>$packet{"packet.processes.cpu"}</cpu>
205	<	</processes>
206	<	<cpu>
207	<	<idle>$packet{"packet.cpu.idle"}</idle>
208	<	<user>$packet{"packet.cpu.user"}</user>
209	<	<kernel>$packet{"packet.cpu.kernel"}</kernel>
210	<	<iowait>$packet{"packet.cpu.iowait"}</iowait>
211	<	<swap>$packet{"packet.cpu.swap"}</swap>
212	<	</cpu>
213	<	<memory>
214	<	<total>$packet{"packet.memory.real"}</total>
215	<	<free>$packet{"packet.memory.free"}</free>
216	<	</memory>
217	<	<swap>
218	<	<total>$packet{"packet.memory.swap_total"}</total>
219	<	<free>$packet{"packet.memory.swap_free"}</free>
220	<	</swap>
221	<	$disk_info
222	<	</packet>
312	>	# sort the data
313	>	@data = sort(grep(!/^$/, grep(/^packet\./, @data)));
314
315	<	EOF
315	>	# turn the array into some nice XML
316	>	my($xml) = &make_xml("", "");
317
226	–	$xml =~ s/\n\s*//g;
227	–
318		my($sock) = new IO::Socket::INET (
319		PeerPort => $udp_port,
320		PeerAddr => $filter_addr,
321		Proto => 'udp'
322	<	) or die "Socket: $!\n";
323	<
322	>	) or die "Could not send UDP: $!\n";
323	>
324		print $sock $xml or die "Could not send UDP packet: $!\n";
325		close($sock);
326		$seq_no++;
327		print "-";
328	+
329	+	return;
330		}
331
332	+
333	+	#-----------------------------------------------------------------------
334	+	# send_tcp_heartbeat
335	+	# Establishes a TCP connection to an i-scream filter.
336	+	# The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
337	+	# If we need to reconfigure, then we complete the heartbeat before
338	+	# doing so.
339	+	#-----------------------------------------------------------------------
340		sub send_tcp_heartbeat() {
341
342	+	my ($doReconfigure) = 0;
343	+
344		my($sock) = new IO::Socket::INET(
345		PeerAddr => $filter_addr,
346		PeerPort => $tcp_port,
347		Proto => 'tcp'
348	<	) or die "Could not perform heartbeat via TCP: $!\n";
348	>	) or return;
349	>	if (!defined $sock) {
350	>	print "IHOST WARNING: Failed to deliver a heartbeat to the i-scream filter.\n";
351	>	&tcp_configure();
352	>	return;
353	>	}
354
248	–	die "Could not connect to the i-scream filter: $!\n" unless $sock;
249	–
355		# Now run through the configuration process.
356		my($response);
357
358		print $sock "HEARTBEAT\n";
359		$response = <$sock>;
360	<	chop $response;
256	<	if (!$response eq "OK") {
360	>	if (!$response eq "OK\n") {
361		close($sock);
362		print "Server gave wrong response to HEARTBEAT: $response\n";
363	+	&tcp_configure();
364		return;
365		}
366
367		print $sock "CONFIG\n";
368		$response = <$sock>;
369	<	chop $response;
265	<	if (!$response eq "OK") {
369	>	if (!$response eq "OK\n") {
370		close($sock);
371		print "Server gave wrong response to CONFIG: $response\n";
372	+	&tcp_configure();
373		return;
374		}
375
376		print $sock "$file_list\n";
377		$response = <$sock>;
378	<	chop $response;
274	<	if (!$response eq "OK") {
378	>	if (!$response eq "OK\n") {
379		close($sock);
380		print "Server gave wrong response to file list: $response\n";
381	+	&tcp_configure();
382		return;
383		}
384
385		print $sock "$last_modified\n";
386		$response = <$sock>;
387	<	chop $response;
283	<	if ($response eq "ERROR") {
387	>	if ($response eq "ERROR\n") {
388		close($sock);
389	<	&tcp_configure();
390	<	return;
389	>	print "Server configuration changed.  Reconfiguring with filter manager.\n";
390	>	$doReconfigure = 1;
391		}
392	<	if (!$response eq "OK") {
392	>	if (!$response eq "OK\n") {
393		close($sock);
394		print "Server gave wrong response to HEARTBEAT: $response\n";
395	+	&tcp_configure();
396		return;
397		}
398
399	+	print $sock "KEY\n";
400	+	$key = <$sock>;
401	+
402		print $sock "ENDHEARTBEAT\n";
403		$response = <$sock>;
404	<	chop $response;
297	<	if (!$response eq "OK") {
404	>	if (!$response eq "OK\n") {
405		close($sock);
406		print "Server gave wrong response to ENDHEARTBEAT: $response\n";
407	+	&tcp_configure();
408		return;
409		}
410
411		close($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 $pidfile.
423	+	# This is then used by a seperate script to check (and restart) ihost.
424	+	#-----------------------------------------------------------------------
425	+	sub write_pid() {
426	+	open PID, ">$pidfile";
427	+	print PID $$;
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		}

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