forked from librenms/librenms
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathmysql_stats.php
executable file
·1247 lines (1179 loc) · 50.5 KB
/
mysql_stats.php
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
<?php
// MYSQL Check - FIXME
// 1 UNKNOWN
# ============================================================================
# This is a script to retrieve information from a MySQL server for input to a
# Cacti graphing process. It is hosted at
# http://code.google.com/p/mysql-cacti-templates/.
#
# This program is copyright (c) 2007 Baron Schwartz. Feedback and improvements
# are welcome.
#
# THIS PROGRAM IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
# MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation, version 2.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
# Place, Suite 330, Boston, MA 02111-1307 USA.
# ============================================================================
# ============================================================================
# To make this code testable, we need to prevent code from running when it is
# included from the test script. The test script and this file have different
# filenames, so we can compare them. In some cases $_SERVER['SCRIPT_FILENAME']
# seems not to be defined, so we skip the check -- this check should certainly
# pass in the test environment.
# ============================================================================
if (!array_key_exists('SCRIPT_FILENAME', $_SERVER)
|| basename(__FILE__) == basename($_SERVER['SCRIPT_FILENAME']) ) {
# ============================================================================
# CONFIGURATION
# ============================================================================
# Define MySQL connection constants in config.php. Arguments explicitly passed
# in from Cacti will override these. However, if you leave them blank in Cacti
# and set them here, you can make life easier. Instead of defining parameters
# here, you can define them in another file named the same as this file, with a
# .cnf extension.
# ============================================================================
# FIXME: why are these not taken from config.php?
$mysql_user = 'librenms';
$mysql_pass = 'flobblelibrenms';
$mysql_host = 'localhost';
$mysql_port = 3306;
$mysql_ssl = FALSE; # Whether to use SSL to connect to MySQL.
$heartbeat = ''; # db.tbl in case you use mk-heartbeat from Maatkit.
$cache_dir = '/tmp'; # If set, this uses caching to avoid multiple calls.
$poll_time = 300; # Adjust to match your polling interval.
$chk_options = array (
'innodb' => true, # Do you want to check InnoDB statistics?
'master' => true, # Do you want to check binary logging?
'slave' => true, # Do you want to check slave status?
'procs' => true, # Do you want to check SHOW PROCESSLIST?
);
$use_ss = FALSE; # Whether to use the script server or not
$debug = FALSE; # Define whether you want debugging behavior.
$debug_log = FALSE; # If $debug_log is a filename, it'll be used.
# ============================================================================
# You should not need to change anything below this line.
# ============================================================================
$version = "1.1.7";
# ============================================================================
# Include settings from an external config file (issue 39).
# ============================================================================
if (file_exists(__FILE__ . '.cnf' ) ) {
require(__FILE__ . '.cnf');
}
# Make this a happy little script even when there are errors.
$no_http_headers = true;
ini_set('implicit_flush', false); # No output, ever.
if ($debug ) {
ini_set('display_errors', true);
ini_set('display_startup_errors', true);
ini_set('error_reporting', 2147483647);
}
else {
ini_set('error_reporting', E_ERROR);
}
ob_start(); # Catch all output such as notices of undefined array indexes.
function error_handler($errno, $errstr, $errfile, $errline) {
print("$errstr at $errfile line $errline\n");
debug("$errstr at $errfile line $errline");
}
# ============================================================================
# Set up the stuff we need to be called by the script server.
# ============================================================================
if ($use_ss ) {
if (file_exists( dirname(__FILE__) . "/../include/global.php") ) {
# See issue 5 for the reasoning behind this.
debug("including " . dirname(__FILE__) . "/../include/global.php");
include_once(dirname(__FILE__) . "/../include/global.php");
}
elseif (file_exists( dirname(__FILE__) . "/../include/config.php" ) ) {
# Some Cacti installations don't have global.php.
debug("including " . dirname(__FILE__) . "/../include/config.php");
include_once(dirname(__FILE__) . "/../include/config.php");
}
}
# ============================================================================
# Make sure we can also be called as a script.
# ============================================================================
if (!isset($called_by_script_server)) {
debug($_SERVER["argv"]);
array_shift($_SERVER["argv"]); # Strip off this script's filename
$options = parse_cmdline($_SERVER["argv"]);
validate_options($options);
$result = ss_get_mysql_stats($options);
debug($result);
if (!$debug ) {
# Throw away the buffer, which ought to contain only errors.
ob_end_clean();
}
else {
ob_end_flush(); # In debugging mode, print out the errors.
}
# Split the result up and extract only the desired parts of it.
$options['items'] = "";
$wanted = explode(',', $options['items']);
$output = array();
foreach ( explode(' ', $result) as $item ) {
if (in_array(substr($item, 0, 2), $wanted) ) {
$output[] = $item;
}
list($short, $val) = explode(":", $item);
echo(strtolower($short).":".strtolower($val)."\n");
}
debug(array("Final result", $output));
print(implode(' ', $output));
}
# ============================================================================
# End "if file was not included" section.
# ============================================================================
}
# ============================================================================
# Work around the lack of array_change_key_case in older PHP.
# ============================================================================
if (!function_exists('array_change_key_case') ) {
function array_change_key_case($arr) {
$res = array();
foreach ( $arr as $key => $val ) {
$res[strtolower($key)] = $val;
}
return $res;
}
}
# ============================================================================
# Validate that the command-line options are here and correct
# ============================================================================
function validate_options($options) {
debug($options);
$opts = array('items', 'user', 'pass', 'heartbeat', 'nocache', 'port');
# Required command-line options
foreach ( array() as $option ) {
if (!isset($options[$option]) || !$options[$option] ) {
usage("Required option --$option is missing");
}
}
foreach ( $options as $key => $val ) {
if (!in_array($key, $opts) ) {
usage("Unknown option --$key");
}
}
}
# ============================================================================
# Print out a brief usage summary
# ============================================================================
function usage($message) {
global $mysql_host, $mysql_user, $mysql_pass, $mysql_port, $heartbeat;
$usage = <<<EOF
$message
Usage: php ss_get_mysql_stats.php --host <host> --items <item,...> [OPTION]
--host Hostname to connect to; use host:port syntax to specify a port
Use :/path/to/socket if you want to connect via a UNIX socket
--items Comma-separated list of the items whose data you want
--user MySQL username; defaults to $mysql_user if not given
--pass MySQL password; defaults to $mysql_pass if not given
--heartbeat MySQL heartbeat table; defaults to '$heartbeat' (see mk-heartbeat)
--nocache Do not cache results in a file
--port MySQL port; defaults to $mysql_port if not given
--mysql_ssl Add the MYSQL_CLIENT_SSL flag to mysql_connect() call
EOF;
die($usage);
}
# ============================================================================
# Parse command-line arguments, in the format --arg value --arg value, and
# return them as an array ( arg => value )
# ============================================================================
function parse_cmdline( $args ) {
$result = array();
$cur_arg = '';
foreach ($args as $val) {
if (strpos($val, '--') === 0 ) {
if (strpos($val, '--no') === 0 ) {
# It's an option without an argument, but it's a --nosomething so
# it's OK.
$result[substr($val, 2)] = 1;
$cur_arg = '';
}
elseif ($cur_arg ) { # Maybe the last --arg was an option with no arg
if ($cur_arg == '--user' || $cur_arg == '--pass' || $cur_arg == '--port' ) {
# Special case because Cacti will pass these without an arg
$cur_arg = '';
}
else {
die("No arg: $cur_arg\n");
}
}
else {
$cur_arg = $val;
}
}
else {
$result[substr($cur_arg, 2)] = $val;
$cur_arg = '';
}
}
if ($cur_arg && ($cur_arg != '--user' && $cur_arg != '--pass' && $cur_arg != '--port') ) {
die("No arg: $cur_arg\n");
}
debug($result);
return $result;
}
# ============================================================================
# This is the main function. Some parameters are filled in from defaults at the
# top of this file.
# ============================================================================
function ss_get_mysql_stats( $options ) {
# Process connection options and connect to MySQL.
global $debug, $mysql_user, $mysql_pass, $heartbeat, $cache_dir, $poll_time,
$chk_options, $mysql_host, $mysql_port, $mysql_ssl;
# Connect to MySQL.
$user = isset($options['user']) ? $options['user'] : $mysql_user;
$pass = isset($options['pass']) ? $options['pass'] : $mysql_pass;
$port = isset($options['port']) ? $options['port'] : $mysql_port;
$host = isset($options['host']) ? $options['host'] : $mysql_host;
$heartbeat = isset($options['heartbeat']) ? $options['heartbeat'] : $heartbeat;
# If there is a port, or if it's a non-standard port, we add ":$port" to the
# hostname.
$host_str = $host
. $port != 3306 ? ":$port" : '';
debug(array('connecting to', $host_str, $user, $pass));
if (!extension_loaded('mysql') ) {
debug("The MySQL extension is not loaded");
die("The MySQL extension is not loaded");
}
if ($mysql_ssl || (isset($options['mysql_ssl']) && $options['mysql_ssl']) ) {
$conn = mysql_connect($host_str, $user, $pass, true, MYSQL_CLIENT_SSL);
}
else {
$conn = mysql_connect($host_str, $user, $pass);
}
if (!$conn ) {
die("MySQL: " . mysql_error());
}
$sanitized_host = str_replace(array(":", "/"), array("", "_"), $host);
$cache_file = "$cache_dir/$sanitized_host-mysql_cacti_stats.txt"
. $port != 3306 ? ":$port" : '';
debug("Cache file is $cache_file");
# First, check the cache.
$fp = null;
if (!isset($options['nocache']) ) {
if ($fp = fopen($cache_file, 'a+') ) {
$locked = flock($fp, 1); # LOCK_SH
if ($locked ) {
if (filesize($cache_file) > 0
&& filectime($cache_file) + ($poll_time/2) > time()
&& ($arr = file($cache_file))
) {# The cache file is good to use.
debug("Using the cache file");
fclose($fp);
return $arr[0];
}
else {
debug("The cache file seems too small or stale");
# Escalate the lock to exclusive, so we can write to it.
if (flock($fp, 2) ) { # LOCK_EX
# We might have blocked while waiting for that LOCK_EX, and
# another process ran and updated it. Let's see if we can just
# return the data now:
if (filesize($cache_file) > 0
&& filectime($cache_file) + ($poll_time/2) > time()
&& ($arr = file($cache_file))
) {# The cache file is good to use.
debug("Using the cache file");
fclose($fp);
return $arr[0];
}
ftruncate($fp, 0); # Now it's ready for writing later.
}
}
}
else {
debug("Couldn't lock the cache file, ignoring it.");
$fp = null;
}
}
}
else {
$fp = null;
debug("Couldn't open the cache file");
}
# Set up variables.
$status = array( # Holds the result of SHOW STATUS, SHOW INNODB STATUS, etc
# Define some indexes so they don't cause errors with += operations.
'relay_log_space' => null,
'binary_log_space' => null,
'current_transactions' => null,
'locked_transactions' => null,
'active_transactions' => null,
'innodb_locked_tables' => null,
'innodb_tables_in_use' => null,
'innodb_lock_structs' => null,
'innodb_lock_wait_secs' => null,
'innodb_sem_waits' => null,
'innodb_sem_wait_time_ms'=> null,
# Values for the 'state' column from SHOW PROCESSLIST (converted to
# lowercase, with spaces replaced by underscores)
'State_closing_tables' => null,
'State_copying_to_tmp_table' => null,
'State_end' => null,
'State_freeing_items' => null,
'State_init' => null,
'State_locked' => null,
'State_login' => null,
'State_preparing' => null,
'State_reading_from_net' => null,
'State_sending_data' => null,
'State_sorting_result' => null,
'State_statistics' => null,
'State_updating' => null,
'State_writing_to_net' => null,
'State_none' => null,
'State_other' => null, # Everything not listed above
);
# Get SHOW STATUS and convert the name-value array into a simple
# associative array.
$result = run_query("SHOW /*!50002 GLOBAL */ STATUS", $conn);
foreach ( $result as $row ) {
$status[$row[0]] = $row[1];
}
# Get SHOW VARIABLES and do the same thing, adding it to the $status array.
$result = run_query("SHOW VARIABLES", $conn);
foreach ( $result as $row ) {
$status[$row[0]] = $row[1];
}
# Get SHOW SLAVE STATUS, and add it to the $status array.
if ($chk_options['slave'] ) {
$result = run_query("SHOW SLAVE STATUS", $conn);
$slave_status_rows_gotten = 0;
foreach ( $result as $row ) {
$slave_status_rows_gotten++;
# Must lowercase keys because different MySQL versions have different
# lettercase.
$row = array_change_key_case($row, CASE_LOWER);
$status['relay_log_space'] = $row['relay_log_space'];
$status['slave_lag'] = $row['seconds_behind_master'];
# Check replication heartbeat, if present.
if ($heartbeat ) {
$result2 = run_query(
"SELECT GREATEST(0, UNIX_TIMESTAMP() - UNIX_TIMESTAMP(ts) - 1)"
. " AS delay FROM $heartbeat WHERE id = 1", $conn);
$slave_delay_rows_gotten = 0;
foreach ( $result2 as $row2 ) {
$slave_delay_rows_gotten++;
if ($row2 && is_array($row2)
&& array_key_exists('delay', $row2) )
{
$status['slave_lag'] = $row2['delay'];
}
else {
debug("Couldn't get slave lag from $heartbeat");
}
}
if ($slave_delay_rows_gotten == 0 ) {
debug("Got nothing from heartbeat query");
}
}
# Scale slave_running and slave_stopped relative to the slave lag.
$status['slave_running'] = ($row['slave_sql_running'] == 'Yes')
? $status['slave_lag'] : 0;
$status['slave_stopped'] = ($row['slave_sql_running'] == 'Yes')
? 0 : $status['slave_lag'];
}
if ($slave_status_rows_gotten == 0 ) {
debug("Got nothing from SHOW SLAVE STATUS");
}
}
# Get SHOW MASTER STATUS, and add it to the $status array.
if ($chk_options['master']
&& array_key_exists('log_bin', $status)
&& $status['log_bin'] == 'ON'
) { # See issue #8
$binlogs = array(0);
$result = run_query("SHOW MASTER LOGS", $conn);
foreach ( $result as $row ) {
$row = array_change_key_case($row, CASE_LOWER);
# Older versions of MySQL may not have the File_size column in the
# results of the command. Zero-size files indicate the user is
# deleting binlogs manually from disk (bad user! bad!).
if (array_key_exists('file_size', $row) && $row['file_size'] > 0 ) {
$binlogs[] = $row['file_size'];
}
}
if (count($binlogs)) {
$status['binary_log_space'] = to_int(array_sum($binlogs));
}
}
# Get SHOW PROCESSLIST and aggregate it by state, then add it to the array
# too.
if ($chk_options['procs'] ) {
$result = run_query('SHOW PROCESSLIST', $conn);
foreach ( $result as $row ) {
$state = $row['State'];
if (is_null($state) ) {
$state = 'NULL';
}
if ($state == '' ) {
$state = 'none';
}
$state = str_replace(' ', '_', strtolower($state));
if (array_key_exists("State_$state", $status) ) {
increment($status, "State_$state", 1);
}
else {
increment($status, "State_other", 1);
}
}
}
# Get SHOW INNODB STATUS and extract the desired metrics from it, then add
# those to the array too.
if ($chk_options['innodb']
&& array_key_exists('have_innodb', $status)
&& $status['have_innodb'] == 'YES'
) {
$result = run_query("SHOW /*!50000 ENGINE*/ INNODB STATUS", $conn);
$istatus_text = $result[0]['Status'];
$istatus_vals = get_innodb_array($istatus_text);
# Override values from InnoDB parsing with values from SHOW STATUS,
# because InnoDB status might not have everything and the SHOW STATUS is
# to be preferred where possible.
$overrides = array(
'Innodb_buffer_pool_pages_data' => 'database_pages',
'Innodb_buffer_pool_pages_dirty' => 'modified_pages',
'Innodb_buffer_pool_pages_free' => 'free_pages',
'Innodb_buffer_pool_pages_total' => 'pool_size',
'Innodb_data_fsyncs' => 'file_fsyncs',
'Innodb_data_pending_reads' => 'pending_normal_aio_reads',
'Innodb_data_pending_writes' => 'pending_normal_aio_writes',
'Innodb_os_log_pending_fsyncs' => 'pending_log_flushes',
'Innodb_pages_created' => 'pages_created',
'Innodb_pages_read' => 'pages_read',
'Innodb_pages_written' => 'pages_written',
'Innodb_rows_deleted' => 'rows_deleted',
'Innodb_rows_inserted' => 'rows_inserted',
'Innodb_rows_read' => 'rows_read',
'Innodb_rows_updated' => 'rows_updated',
);
# If the SHOW STATUS value exists, override...
foreach ( $overrides as $key => $val ) {
if (array_key_exists($key, $status) ) {
debug("Override $key");
$istatus_vals[$val] = $status[$key];
}
}
# Now copy the values into $status.
foreach ( $istatus_vals as $key => $val ) {
$status[$key] = $istatus_vals[$key];
}
}
# Make table_open_cache backwards-compatible (issue 63).
if (array_key_exists('table_open_cache', $status) ) {
$status['table_cache'] = $status['table_open_cache'];
}
# Compute how much of the key buffer is used and unflushed (issue 127).
$status['Key_buf_bytes_used']
= big_sub($status['key_buffer_size'],
big_multiply($status['Key_blocks_unused'],
$status['key_cache_block_size']));
$status['Key_buf_bytes_unflushed']
= big_multiply($status['Key_blocks_not_flushed'],
$status['key_cache_block_size']);
if (array_key_exists('unflushed_log', $status)
&& $status['unflushed_log']
) {
# TODO: I'm not sure what the deal is here; need to debug this. But the
# unflushed log bytes spikes a lot sometimes and it's impossible for it to
# be more than the log buffer.
debug("Unflushed log: $status[unflushed_log]");
$status['unflushed_log']
= max($status['unflushed_log'], $status['innodb_log_buffer_size']);
}
# Define the variables to output. I use shortened variable names so maybe
# it'll all fit in 1024 bytes for Cactid and Spine's benefit. This list must
# come right after the word MAGIC_VARS_DEFINITIONS. The Perl script parses
# it and uses it as a Perl variable.
$keys = array(
'Key_read_requests' => 'a0',
'Key_reads' => 'a1',
'Key_write_requests' => 'a2',
'Key_writes' => 'a3',
'history_list' => 'a4',
'innodb_transactions' => 'a5',
'read_views' => 'a6',
'current_transactions' => 'a7',
'locked_transactions' => 'a8',
'active_transactions' => 'a9',
'pool_size' => 'aa',
'free_pages' => 'ab',
'database_pages' => 'ac',
'modified_pages' => 'ad',
'pages_read' => 'ae',
'pages_created' => 'af',
'pages_written' => 'ag',
'file_fsyncs' => 'ah',
'file_reads' => 'ai',
'file_writes' => 'aj',
'log_writes' => 'ak',
'pending_aio_log_ios' => 'al',
'pending_aio_sync_ios' => 'am',
'pending_buf_pool_flushes' => 'an',
'pending_chkp_writes' => 'ao',
'pending_ibuf_aio_reads' => 'ap',
'pending_log_flushes' => 'aq',
'pending_log_writes' => 'ar',
'pending_normal_aio_reads' => 'as',
'pending_normal_aio_writes' => 'at',
'ibuf_inserts' => 'au',
'ibuf_merged' => 'av',
'ibuf_merges' => 'aw',
'spin_waits' => 'ax',
'spin_rounds' => 'ay',
'os_waits' => 'az',
'rows_inserted' => 'b0',
'rows_updated' => 'b1',
'rows_deleted' => 'b2',
'rows_read' => 'b3',
'Table_locks_waited' => 'b4',
'Table_locks_immediate' => 'b5',
'Slow_queries' => 'b6',
'Open_files' => 'b7',
'Open_tables' => 'b8',
'Opened_tables' => 'b9',
'innodb_open_files' => 'ba',
'open_files_limit' => 'bb',
'table_cache' => 'bc',
'Aborted_clients' => 'bd',
'Aborted_connects' => 'be',
'Max_used_connections' => 'bf',
'Slow_launch_threads' => 'bg',
'Threads_cached' => 'bh',
'Threads_connected' => 'bi',
'Threads_created' => 'bj',
'Threads_running' => 'bk',
'max_connections' => 'bl',
'thread_cache_size' => 'bm',
'Connections' => 'bn',
'slave_running' => 'bo',
'slave_stopped' => 'bp',
'Slave_retried_transactions' => 'bq',
'slave_lag' => 'br',
'Slave_open_temp_tables' => 'bs',
'Qcache_free_blocks' => 'bt',
'Qcache_free_memory' => 'bu',
'Qcache_hits' => 'bv',
'Qcache_inserts' => 'bw',
'Qcache_lowmem_prunes' => 'bx',
'Qcache_not_cached' => 'by',
'Qcache_queries_in_cache' => 'bz',
'Qcache_total_blocks' => 'c0',
'query_cache_size' => 'c1',
'Questions' => 'c2',
'Com_update' => 'c3',
'Com_insert' => 'c4',
'Com_select' => 'c5',
'Com_delete' => 'c6',
'Com_replace' => 'c7',
'Com_load' => 'c8',
'Com_update_multi' => 'c9',
'Com_insert_select' => 'ca',
'Com_delete_multi' => 'cb',
'Com_replace_select' => 'cc',
'Select_full_join' => 'cd',
'Select_full_range_join' => 'ce',
'Select_range' => 'cf',
'Select_range_check' => 'cg',
'Select_scan' => 'ch',
'Sort_merge_passes' => 'ci',
'Sort_range' => 'cj',
'Sort_rows' => 'ck',
'Sort_scan' => 'cl',
'Created_tmp_tables' => 'cm',
'Created_tmp_disk_tables' => 'cn',
'Created_tmp_files' => 'co',
'Bytes_sent' => 'cp',
'Bytes_received' => 'cq',
'innodb_log_buffer_size' => 'cr',
'unflushed_log' => 'cs',
'log_bytes_flushed' => 'ct',
'log_bytes_written' => 'cu',
'relay_log_space' => 'cv',
'binlog_cache_size' => 'cw',
'Binlog_cache_disk_use' => 'cx',
'Binlog_cache_use' => 'cy',
'binary_log_space' => 'cz',
'innodb_locked_tables' => 'd0',
'innodb_lock_structs' => 'd1',
'State_closing_tables' => 'd2',
'State_copying_to_tmp_table' => 'd3',
'State_end' => 'd4',
'State_freeing_items' => 'd5',
'State_init' => 'd6',
'State_locked' => 'd7',
'State_login' => 'd8',
'State_preparing' => 'd9',
'State_reading_from_net' => 'da',
'State_sending_data' => 'db',
'State_sorting_result' => 'dc',
'State_statistics' => 'dd',
'State_updating' => 'de',
'State_writing_to_net' => 'df',
'State_none' => 'dg',
'State_other' => 'dh',
'Handler_commit' => 'di',
'Handler_delete' => 'dj',
'Handler_discover' => 'dk',
'Handler_prepare' => 'dl',
'Handler_read_first' => 'dm',
'Handler_read_key' => 'dn',
'Handler_read_next' => 'do',
'Handler_read_prev' => 'dp',
'Handler_read_rnd' => 'dq',
'Handler_read_rnd_next' => 'dr',
'Handler_rollback' => 'ds',
'Handler_savepoint' => 'dt',
'Handler_savepoint_rollback' => 'du',
'Handler_update' => 'dv',
'Handler_write' => 'dw',
# Some InnoDB stats added later...
'innodb_tables_in_use' => 'dx',
'innodb_lock_wait_secs' => 'dy',
'hash_index_cells_total' => 'dz',
'hash_index_cells_used' => 'e0',
'total_mem_alloc' => 'e1',
'additional_pool_alloc' => 'e2',
'uncheckpointed_bytes' => 'e3',
'ibuf_used_cells' => 'e4',
'ibuf_free_cells' => 'e5',
'ibuf_cell_count' => 'e6',
'adaptive_hash_memory' => 'e7',
'page_hash_memory' => 'e8',
'dictionary_cache_memory' => 'e9',
'file_system_memory' => 'ea',
'lock_system_memory' => 'eb',
'recovery_system_memory' => 'ec',
'thread_hash_memory' => 'ed',
'innodb_sem_waits' => 'ee',
'innodb_sem_wait_time_ms' => 'ef',
'Key_buf_bytes_unflushed' => 'eg',
'Key_buf_bytes_used' => 'eh',
'key_buffer_size' => 'ei',
'Innodb_row_lock_time' => 'ej',
'Innodb_row_lock_waits' => 'ek',
);
# Return the output.
$output = array();
foreach ($keys as $key => $short ) {
# If the value isn't defined, return -1 which is lower than (most graphs')
# minimum value of 0, so it'll be regarded as a missing value.
$val = isset($status[$key]) ? $status[$key] : -1;
$output[] = "$short:$val";
}
$result = implode(' ', $output);
if ($fp ) {
if (fwrite($fp, $result) === FALSE ) {
die("Can't write '$cache_file'");
}
fclose($fp);
}
return $result;
}
# ============================================================================
# Given INNODB STATUS text, returns a key-value array of the parsed text. Each
# line shows a sample of the input for both standard InnoDB as you would find in
# MySQL 5.0, and XtraDB or enhanced InnoDB from Percona if applicable. Note
# that extra leading spaces are ignored due to trim().
# ============================================================================
function get_innodb_array($text) {
$results = array(
'spin_waits' => array(),
'spin_rounds' => array(),
'os_waits' => array(),
'pending_normal_aio_reads' => null,
'pending_normal_aio_writes' => null,
'pending_ibuf_aio_reads' => null,
'pending_aio_log_ios' => null,
'pending_aio_sync_ios' => null,
'pending_log_flushes' => null,
'pending_buf_pool_flushes' => null,
'file_reads' => null,
'file_writes' => null,
'file_fsyncs' => null,
'ibuf_inserts' => null,
'ibuf_merged' => null,
'ibuf_merges' => null,
'log_bytes_written' => null,
'unflushed_log' => null,
'log_bytes_flushed' => null,
'pending_log_writes' => null,
'pending_chkp_writes' => null,
'log_writes' => null,
'pool_size' => null,
'free_pages' => null,
'database_pages' => null,
'modified_pages' => null,
'pages_read' => null,
'pages_created' => null,
'pages_written' => null,
'queries_inside' => null,
'queries_queued' => null,
'read_views' => null,
'rows_inserted' => null,
'rows_updated' => null,
'rows_deleted' => null,
'rows_read' => null,
'innodb_transactions' => null,
'unpurged_txns' => null,
'history_list' => null,
'current_transactions' => null,
'hash_index_cells_total' => null,
'hash_index_cells_used' => null,
'total_mem_alloc' => null,
'additional_pool_alloc' => null,
'last_checkpoint' => null,
'uncheckpointed_bytes' => null,
'ibuf_used_cells' => null,
'ibuf_free_cells' => null,
'ibuf_cell_count' => null,
'adaptive_hash_memory' => null,
'page_hash_memory' => null,
'dictionary_cache_memory' => null,
'file_system_memory' => null,
'lock_system_memory' => null,
'recovery_system_memory' => null,
'thread_hash_memory' => null,
'innodb_sem_waits' => null,
'innodb_sem_wait_time_ms' => null,
);
$txn_seen = FALSE;
foreach ( explode("\n", $text) as $line ) {
$line = trim($line);
$row = preg_split('/ +/', $line);
# SEMAPHORES
if (strpos($line, 'Mutex spin waits') === 0 ) {
# Mutex spin waits 79626940, rounds 157459864, OS waits 698719
# Mutex spin waits 0, rounds 247280272495, OS waits 316513438
$results['spin_waits'][] = to_int($row[3]);
$results['spin_rounds'][] = to_int($row[5]);
$results['os_waits'][] = to_int($row[8]);
}
elseif (strpos($line, 'RW-shared spins') === 0 ) {
# RW-shared spins 3859028, OS waits 2100750; RW-excl spins 4641946, OS waits 1530310
$results['spin_waits'][] = to_int($row[2]);
$results['spin_waits'][] = to_int($row[8]);
$results['os_waits'][] = to_int($row[5]);
$results['os_waits'][] = to_int($row[11]);
}
elseif (strpos($line, 'seconds the semaphore:') > 0) {
# --Thread 907205 has waited at handler/ha_innodb.cc line 7156 for 1.00 seconds the semaphore:
increment($results, 'innodb_sem_waits', 1);
increment($results,
'innodb_sem_wait_time_ms', to_int($row[9]) * 1000);
}
# TRANSACTIONS
elseif (strpos($line, 'Trx id counter') === 0 ) {
# The beginning of the TRANSACTIONS section: start counting
# transactions
# Trx id counter 0 1170664159
# Trx id counter 861B144C
$results['innodb_transactions'] = make_bigint($row[3], $row[4]);
$txn_seen = TRUE;
}
elseif (strpos($line, 'Purge done for trx') === 0 ) {
# Purge done for trx's n:o < 0 1170663853 undo n:o < 0 0
# Purge done for trx's n:o < 861B135D undo n:o < 0
$purged_to = make_bigint($row[6], $row[7] == 'undo' ? null : $row[7]);
$results['unpurged_txns']
= big_sub($results['innodb_transactions'], $purged_to);
}
elseif (strpos($line, 'History list length') === 0 ) {
# History list length 132
$results['history_list'] = to_int($row[3]);
}
elseif ($txn_seen && strpos($line, '---TRANSACTION') === 0 ) {
# ---TRANSACTION 0, not started, process no 13510, OS thread id 1170446656
increment($results, 'current_transactions', 1);
if (strpos($line, 'ACTIVE') > 0 ) {
increment($results, 'active_transactions', 1);
}
}
elseif ($txn_seen && strpos($line, '------- TRX HAS BEEN') === 0 ) {
# ------- TRX HAS BEEN WAITING 32 SEC FOR THIS LOCK TO BE GRANTED:
increment($results, 'innodb_lock_wait_secs', to_int($row[5]));
}
elseif (strpos($line, 'read views open inside InnoDB') > 0 ) {
# 1 read views open inside InnoDB
$results['read_views'] = to_int($row[0]);
}
elseif (strpos($line, 'mysql tables in use') === 0 ) {
# mysql tables in use 2, locked 2
increment($results, 'innodb_tables_in_use', to_int($row[4]));
increment($results, 'innodb_locked_tables', to_int($row[6]));
}
elseif ($txn_seen && strpos($line, 'lock struct(s)') > 0 ) {
# 23 lock struct(s), heap size 3024, undo log entries 27
# LOCK WAIT 12 lock struct(s), heap size 3024, undo log entries 5
# LOCK WAIT 2 lock struct(s), heap size 368
if (strpos($line, 'LOCK WAIT') === 0 ) {
increment($results, 'innodb_lock_structs', to_int($row[2]));
increment($results, 'locked_transactions', 1);
}
else {
increment($results, 'innodb_lock_structs', to_int($row[0]));
}
}
# FILE I/O
elseif (strpos($line, ' OS file reads, ') > 0 ) {
# 8782182 OS file reads, 15635445 OS file writes, 947800 OS fsyncs
$results['file_reads'] = to_int($row[0]);
$results['file_writes'] = to_int($row[4]);
$results['file_fsyncs'] = to_int($row[8]);
}
elseif (strpos($line, 'Pending normal aio reads:') === 0 ) {
# Pending normal aio reads: 0, aio writes: 0,
$results['pending_normal_aio_reads'] = to_int($row[4]);
$results['pending_normal_aio_writes'] = to_int($row[7]);
}
elseif (strpos($line, 'ibuf aio reads') === 0 ) {
# ibuf aio reads: 0, log i/o's: 0, sync i/o's: 0
$results['pending_ibuf_aio_reads'] = to_int($row[3]);
$results['pending_aio_log_ios'] = to_int($row[6]);
$results['pending_aio_sync_ios'] = to_int($row[9]);
}
elseif (strpos($line, 'Pending flushes (fsync)') === 0 ) {
# Pending flushes (fsync) log: 0; buffer pool: 0
$results['pending_log_flushes'] = to_int($row[4]);
$results['pending_buf_pool_flushes'] = to_int($row[7]);
}
# INSERT BUFFER AND ADAPTIVE HASH INDEX
elseif (strpos($line, 'Ibuf for space 0: size ') === 0 ) {
# Older InnoDB code seemed to be ready for an ibuf per tablespace. It
# had two lines in the output. Newer has just one line, see below.
# Ibuf for space 0: size 1, free list len 887, seg size 889, is not empty
# Ibuf for space 0: size 1, free list len 887, seg size 889,
$results['ibuf_used_cells'] = to_int($row[5]);
$results['ibuf_free_cells'] = to_int($row[9]);
$results['ibuf_cell_count'] = to_int($row[12]);
}
elseif (strpos($line, 'Ibuf: size ') === 0 ) {
# Ibuf: size 1, free list len 4634, seg size 4636,
$results['ibuf_used_cells'] = to_int($row[2]);
$results['ibuf_free_cells'] = to_int($row[6]);
$results['ibuf_cell_count'] = to_int($row[9]);
}
elseif (strpos($line, ' merged recs, ') > 0 ) {
# 19817685 inserts, 19817684 merged recs, 3552620 merges
$results['ibuf_inserts'] = to_int($row[0]);
$results['ibuf_merged'] = to_int($row[2]);
$results['ibuf_merges'] = to_int($row[5]);
}
elseif (strpos($line, 'Hash table size ') === 0 ) {
# In some versions of InnoDB, the used cells is omitted.
# Hash table size 4425293, used cells 4229064, ....
# Hash table size 57374437, node heap has 72964 buffer(s) <-- no used cells
$results['hash_index_cells_total'] = to_int($row[3]);
$results['hash_index_cells_used']
= strpos($line, 'used cells') > 0 ? to_int($row[6]) : '0';
}
# LOG
elseif (strpos($line, " log i/o's done, ") > 0 ) {
# 3430041 log i/o's done, 17.44 log i/o's/second
# 520835887 log i/o's done, 17.28 log i/o's/second, 518724686 syncs, 2980893 checkpoints
# TODO: graph syncs and checkpoints
$results['log_writes'] = to_int($row[0]);
}
elseif (strpos($line, " pending log writes, ") > 0 ) {
# 0 pending log writes, 0 pending chkp writes
$results['pending_log_writes'] = to_int($row[0]);
$results['pending_chkp_writes'] = to_int($row[4]);
}
elseif (strpos($line, "Log sequence number") === 0 ) {
# This number is NOT printed in hex in InnoDB plugin.
# Log sequence number 13093949495856 //plugin
# Log sequence number 125 3934414864 //normal
$results['log_bytes_written']
= isset($row[4])
? make_bigint($row[3], $row[4])
: to_int($row[3]);
}
elseif (strpos($line, "Log flushed up to") === 0 ) {
# This number is NOT printed in hex in InnoDB plugin.
# Log flushed up to 13093948219327
# Log flushed up to 125 3934414864
$results['log_bytes_flushed']
= isset($row[5])
? make_bigint($row[4], $row[5])
: to_int($row[4]);
}
elseif (strpos($line, "Last checkpoint at") === 0 ) {
# Last checkpoint at 125 3934293461
$results['last_checkpoint']
= isset($row[4])
? make_bigint($row[3], $row[4])
: to_int($row[3]);
}
# BUFFER POOL AND MEMORY
elseif (strpos($line, "Total memory allocated") === 0 ) {
# Total memory allocated 29642194944; in additional pool allocated 0
$results['total_mem_alloc'] = to_int($row[3]);
$results['additional_pool_alloc'] = to_int($row[8]);
}
elseif (strpos($line, 'Adaptive hash index ') === 0 ) {
# Adaptive hash index 1538240664 (186998824 + 1351241840)
$results['adaptive_hash_memory'] = to_int($row[3]);
}
elseif (strpos($line, 'Page hash ') === 0 ) {
# Page hash 11688584
$results['page_hash_memory'] = to_int($row[2]);
}
elseif (strpos($line, 'Dictionary cache ') === 0 ) {
# Dictionary cache 145525560 (140250984 + 5274576)
$results['dictionary_cache_memory'] = to_int($row[2]);
}
elseif (strpos($line, 'File system ') === 0 ) {
# File system 313848 (82672 + 231176)
$results['file_system_memory'] = to_int($row[2]);
}
elseif (strpos($line, 'Lock system ') === 0 ) {
# Lock system 29232616 (29219368 + 13248)
$results['lock_system_memory'] = to_int($row[2]);
}
elseif (strpos($line, 'Recovery system ') === 0 ) {
# Recovery system 0 (0 + 0)
$results['recovery_system_memory'] = to_int($row[2]);
}
elseif (strpos($line, 'Threads ') === 0 ) {
# Threads 409336 (406936 + 2400)