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Comparing projects/cms/source/host/ihost-perl/ihost.pl (file contents):
Revision 1.29 by pjm2, Wed Mar 14 18:49:00 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
9 < # methods as you see fit.
10 < #  - pjm2@ukc.ac.uk
28 > # a typical Unix/Linux box.
29   #
30   # $Author$
31   # $Id$
# Line 35 | Line 53 | use vars qw (
53               $fqdn
54               $pidfile
55               $retry_wait
56 +             $ostype
57 +             $key
58 +             @data
59              );
60  
61   if (@ARGV != 2) {
# Line 45 | Line 66 | $filter_manager_addr = $ARGV[0];
66   $filter_manager_port = $ARGV[1];
67  
68   $seq_no = 1;
69 < $retry_wait = 600;
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 < $pidfile = "/var/tmp/ihost.pid";
77 > # use home dir by default
78 > #$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 75 | 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...
# Line 90 | Line 121 | exit(0);
121   #-----------------------------------------------------------------------
122   sub wait_then_retry() {
123      print "Will retry configuration with filter manager in $retry_wait seconds.\n";
124 <    `sleep $retry_wait`;
124 >    sleep $retry_wait;
125   }
126  
127  
# Line 102 | Line 133 | sub wait_then_retry() {
133   #-----------------------------------------------------------------------
134   sub tcp_configure() {
135      
136 <    while (1 == 1) {
136 >    while (1) {
137          my($sock) = new IO::Socket::INET(
138                                           PeerAddr => $filter_manager_addr,
139                                           PeerPort => $filter_manager_port,
# Line 111 | Line 142 | sub tcp_configure() {
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";
114            close($sock);
145              wait_then_retry();
146              next;
147          }
# Line 121 | Line 151 | sub tcp_configure() {
151      
152          print $sock "STARTCONFIG\n";
153          $response = <$sock>;
154 <        if (!chop $response eq "OK") {
155 <            print "The i-scream server rejected the STARTCONFIG command.  Terminated.";
154 >        if ($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;
# Line 132 | Line 162 | sub tcp_configure() {
162      
163          print $sock "LASTMODIFIED\n";
164          $response = <$sock>;
165 <        chop $response;
165 >        if (!$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";
175  
176          print $sock "FILELIST\n";
177          $response = <$sock>;
178 <        chop $response;
178 >        if (!$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";
188  
189          print $sock "FQDN\n";
190          $response = <$sock>;
191 <        chop $response;
191 >        if (!$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 "FQDN returned: $fqdn\n";
201  
202          print $sock "UDPUpdateTime\n";
203          $response = <$sock>;
204 <        chop $response;
204 >        if (!$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 <        chop $response;
215 >        if (!$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";
225  
226          print $sock "ENDCONFIG\n";
227          $response = <$sock>;
228 <        chomp $response;
169 <        if (!$response eq "OK") {
228 >        if ($response && !($response eq "OK\n")) {
229              print "ENDCONFIG command to server failed.  Terminated.\n";
230              close($sock);
231              wait_then_retry();
# Line 177 | Line 236 | sub tcp_configure() {
236      
237          print $sock "FILTER\n";
238          $response = <$sock>;
239 <        unless (defined($response)) {
239 >        if (!$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 <        chop $response;
187 <        $response =~ /(.*);(.*);(.*)/;
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";
# Line 203 | Line 262 | sub tcp_configure() {
262  
263          print $sock "END\n";
264          $response = <$sock>;
265 <        chop $response;
207 <        if ($response eq "OK") {
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.";
269 >            print "The server failed the host configuration on the END command.\n";
270              close($sock);
271              wait_then_retry();
272              next;
# Line 223 | Line 281 | sub tcp_configure() {
281   }
282  
283  
226
227
284   #-----------------------------------------------------------------------
285   # send_udp_packet
286   # Sends a UDP packet to an i-scream filter.
# Line 233 | Line 289 | sub tcp_configure() {
289   #-----------------------------------------------------------------------
290   sub send_udp_packet() {
291  
292 <    my(@statgrab) = `./statgrab.pl`;
293 <    my(%packet);
294 <    for (my($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 .= " name=\"" . $packet{"packet.disk.p$i.attributes.name"} . "\"";
310 <        $disk_info .= " kbytes=\"" . $packet{"packet.disk.p$i.attributes.kbytes"} . "\"";
311 <        $disk_info .= " used=\"" . $packet{"packet.disk.p$i.attributes.used"} . "\"";
252 <        $disk_info .= " avail=\"" . $packet{"packet.disk.p$i.attributes.avail"} . "\"";
253 <        $disk_info .= " mount=\"" . $packet{"packet.disk.p$i.attributes.mount"} . "\"";
254 <        $disk_info .= "></p$i>";
255 <        ++$i;
256 <    }
257 <    $disk_info .= "</disk>";
258 <
259 <    my($ip) = inet_ntoa(scalar(gethostbyname(hostname())) || 'localhost');
260 <
261 <    # Build the XML packet this way, as we can clearly
262 <    # see the structure and contents... I like this ;-)
263 <    # [Note that the server rejects UDP packets that are
264 <    # larger than 8196 bytes]
265 <    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="$fqdn" date="$date" type="data" ip="$ip">
314 <    <load>
269 <        <load1>$packet{"packet.load.load1"}</load1>
270 <        <load5>$packet{"packet.load.load5"}</load5>
271 <        <load15>$packet{"packet.load.load15"}</load15>
272 <    </load>
273 <    <os>
274 <        <name>$packet{"packet.os.name"}</name>
275 <        <release>$packet{"packet.os.release"}</release>
276 <        <platform>$packet{"packet.os.platform"}</platform>
277 <        <sysname>$packet{"packet.os.sysname"}</sysname>
278 <        <version>$packet{"packet.os.version"}</version>
279 <        <uptime>$packet{"packet.os.uptime"}</uptime>
280 <    </os>
281 <    <users>
282 <        <count>$packet{"packet.users.count"}</count>
283 <        <list>$packet{"packet.users.list"}</list>
284 <    </users>
285 <    <processes>
286 <        <total>$packet{"packet.processes.total"}</total>
287 <        <sleeping>$packet{"packet.processes.sleeping"}</sleeping>
288 <        <zombie>$packet{"packet.processes.zombie"}</zombie>
289 <        <stopped>$packet{"packet.processes.stopped"}</stopped>
290 <        <cpu>$packet{"packet.processes.cpu"}</cpu>
291 <    </processes>
292 <    <cpu>
293 <        <idle>$packet{"packet.cpu.idle"}</idle>
294 <        <user>$packet{"packet.cpu.user"}</user>
295 <        <kernel>$packet{"packet.cpu.kernel"}</kernel>
296 <        <iowait>$packet{"packet.cpu.iowait"}</iowait>
297 <        <swap>$packet{"packet.cpu.swap"}</swap>
298 <    </cpu>
299 <    <memory>
300 <        <total>$packet{"packet.memory.total"}</total>
301 <        <free>$packet{"packet.memory.free"}</free>
302 <    </memory>
303 <    <swap>
304 <        <total>$packet{"packet.swap.total"}</total>
305 <        <free>$packet{"packet.swap.free"}</free>
306 <    </swap>
307 <    $disk_info
308 < </packet>
313 >    # sort the data
314 >    @data = sort(grep(!/^$/, grep(/^packet\./, @data)));
315  
316 < EOF
316 >    # turn the array into some nice XML
317 >    my($xml) = &make_xml("", "");
318  
312    # Make the packet smaller by stripping out newlines and leading spaces.
313    $xml =~ s/\n\s*//g;
314
319      my($sock) = new IO::Socket::INET (
320                                        PeerPort => $udp_port,
321                                        PeerAddr => $filter_addr,
322                                        Proto => 'udp'
323                                       ) or die "Could not send UDP: $!\n";
324 <
324 >    
325      print $sock $xml or die "Could not send UDP packet: $!\n";
326      close($sock);
327      $seq_no++;
# Line 327 | Line 331 | EOF
331   }
332  
333  
330
331
334   #-----------------------------------------------------------------------
335   # send_tcp_heartbeat
336   # Establishes a TCP connection to an i-scream filter.
337   # The heartbeat is used as a guaranteed "I'm alive" delivery mechanism.
338 + # If we need to reconfigure, then we complete the heartbeat before
339 + # doing so.
340   #-----------------------------------------------------------------------
341   sub send_tcp_heartbeat() {
342  
343 +    my ($doReconfigure) = 0;
344 +
345      my($sock) = new IO::Socket::INET(
346                                       PeerAddr => $filter_addr,
347                                       PeerPort => $tcp_port,
# Line 352 | Line 358 | sub send_tcp_heartbeat() {
358  
359      print $sock "HEARTBEAT\n";
360      $response = <$sock>;
361 <    return if (!defined $response);
356 <    chop $response;
357 <    if (!$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();
# Line 363 | Line 367 | sub send_tcp_heartbeat() {
367      
368      print $sock "CONFIG\n";
369      $response = <$sock>;
370 <    return if (!defined $response);
367 <    chop $response;
368 <    if (!$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();
# Line 374 | Line 376 | sub send_tcp_heartbeat() {
376  
377      print $sock "$file_list\n";
378      $response = <$sock>;
379 <    return if (!defined $response);
378 <    chop $response;
379 <    if (!$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();
# Line 385 | Line 385 | sub send_tcp_heartbeat() {
385      
386      print $sock "$last_modified\n";
387      $response = <$sock>;
388 <    return if (!defined $response);
389 <    chop $response;
390 <    if ($response eq "ERROR") {
388 >    if ($response eq "ERROR\n") {
389          close($sock);
390          print "Server configuration changed.  Reconfiguring with filter manager.\n";
391 <        &tcp_configure();
394 <        return;
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 <    return if (!defined $response);
406 <    chop $response;
407 <    if (!$response eq "OK") {
405 >    if (!$response eq "OK\n") {
406          close($sock);
407          print "Server gave wrong response to ENDHEARTBEAT: $response\n";
408          &tcp_configure();
# Line 414 | Line 412 | sub send_tcp_heartbeat() {
412      close($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 $pidfile.
# Line 428 | Line 429 | sub write_pid() {
429      close PID;
430      
431      return;
432 + }
433 +
434 + #-----------------------------------------------------------------------
435 + # make_xml
436 + # Turns an array of plugins data into an XML string.
437 + #-----------------------------------------------------------------------
438 + sub make_xml() {
439 +    my($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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