1#!@PERL_PATH@ 2 3# Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved. 4# 5# This program is free software; you can redistribute it and/or modify 6# it under the terms of the GNU General Public License, version 2.0, 7# as published by the Free Software Foundation. 8# 9# This program is also distributed with certain software (including 10# but not limited to OpenSSL) that is licensed under separate terms, 11# as designated in a particular file or component or in included license 12# documentation. The authors of MySQL hereby grant you an additional 13# permission to link the program and your derivative works with the 14# separately licensed software that they have included with MySQL. 15# 16# This program is distributed in the hope that it will be useful, 17# but WITHOUT ANY WARRANTY; without even the implied warranty of 18# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 19# GNU General Public License, version 2.0, for more details. 20# 21# You should have received a copy of the GNU General Public License 22# along with this program; if not, write to the Free Software 23# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 24 25use Getopt::Long; 26use POSIX qw(strftime getcwd); 27use File::Path qw(mkpath); 28 29$|=1; 30$VER="2.16"; 31 32my @defaults_options; # Leading --no-defaults, --defaults-file, etc. 33 34$opt_example = 0; 35$opt_help = 0; 36$opt_log = undef(); 37$opt_mysqladmin = "@bindir@/mysqladmin"; 38$opt_mysqld = "@libexecdir@/mysqld"; 39$opt_no_log = 0; 40$opt_password = undef(); 41$opt_tcp_ip = 0; 42$opt_user = "root"; 43$opt_version = 0; 44$opt_silent = 0; 45$opt_verbose = 0; 46 47my $my_print_defaults_exists= 1; 48my $logdir= undef(); 49 50my ($mysqld, $mysqladmin, $groupids, $homedir, $my_progname); 51 52$homedir = $ENV{HOME}; 53$my_progname = $0; 54$my_progname =~ s/.*[\/]//; 55 56 57if (defined($ENV{UMASK})) { 58 my $UMASK = $ENV{UMASK}; 59 my $m; 60 my $fmode = "0640"; 61 62 if(($UMASK =~ m/[^0246]/) || ($UMASK =~ m/^[^0]/) || (length($UMASK) != 4)) { 63 printf("UMASK must be a 3-digit mode with an additional leading 0 to indicate octal.\n"); 64 printf("The first digit will be corrected to 6, the others may be 0, 2, 4, or 6.\n"); } 65 else { 66 $fmode= substr $UMASK, 2, 2; 67 $fmode= "06${fmode}"; } 68 69 if($fmode != $UMASK) { 70 printf("UMASK corrected from $UMASK to $fmode ...\n"); } 71 72 $fmode= oct($fmode); 73 74 umask($fmode); 75} 76 77 78main(); 79 80#### 81#### main sub routine 82#### 83 84sub main 85{ 86 my $flag_exit= 0; 87 88 if (!defined(my_which(my_print_defaults))) 89 { 90 # We can't throw out yet, since --version, --help, or --example may 91 # have been given 92 print "WARNING: my_print_defaults command not found.\n"; 93 print "Please make sure you have this command available and\n"; 94 print "in your path. The command is available from the latest\n"; 95 print "MySQL distribution.\n"; 96 $my_print_defaults_exists= 0; 97 } 98 99 # Remove leading defaults options from @ARGV 100 while (@ARGV > 0) 101 { 102 last unless $ARGV[0] =~ 103 /^--(?:no-defaults$|(?:defaults-file|defaults-extra-file)=)/; 104 push @defaults_options, (shift @ARGV); 105 } 106 107 foreach (@defaults_options) 108 { 109 $_ = quote_shell_word($_); 110 } 111 112 # Add [mysqld_multi] options to front of @ARGV, ready for GetOptions() 113 unshift @ARGV, defaults_for_group('mysqld_multi'); 114 115 # We've already handled --no-defaults, --defaults-file, etc. 116 if (!GetOptions("help", "example", "version", "mysqld=s", "mysqladmin=s", 117 "user=s", "password=s", "log=s", "no-log", 118 "tcp-ip", "silent", "verbose")) 119 { 120 $flag_exit= 1; 121 } 122 usage() if ($opt_help); 123 124 if ($opt_verbose && $opt_silent) 125 { 126 print "Both --verbose and --silent have been given. Some of the warnings "; 127 print "will be disabled\nand some will be enabled.\n\n"; 128 } 129 130 init_log() if (!defined($opt_log)); 131 $groupids = $ARGV[1]; 132 if ($opt_version) 133 { 134 print "$my_progname version $VER by Jani Tolonen\n"; 135 exit(0); 136 } 137 example() if ($opt_example); 138 if ($flag_exit) 139 { 140 print "Error with an option, see $my_progname --help for more info.\n"; 141 exit(1); 142 } 143 if (!defined(my_which(my_print_defaults))) 144 { 145 print "ABORT: Can't find command 'my_print_defaults'.\n"; 146 print "This command is available from the latest MySQL\n"; 147 print "distribution. Please make sure you have the command\n"; 148 print "in your PATH.\n"; 149 exit(1); 150 } 151 usage() if (!defined($ARGV[0]) || 152 (!($ARGV[0] =~ m/^start$/i) && 153 !($ARGV[0] =~ m/^stop$/i) && 154 !($ARGV[0] =~ m/^reload$/i) && 155 !($ARGV[0] =~ m/^report$/i))); 156 157 if (!$opt_no_log) 158 { 159 w2log("$my_progname log file version $VER; run: ", 160 "$opt_log", 1, 0); 161 } 162 else 163 { 164 print "$my_progname log file version $VER; run: "; 165 print strftime "%a %b %e %H:%M:%S %Y", localtime; 166 print "\n"; 167 } 168 if (($ARGV[0] =~ m/^start$/i) || ($ARGV[0] =~ m/^reload$/i)) 169 { 170 if (!defined(($mysqld= my_which($opt_mysqld))) && $opt_verbose) 171 { 172 print "WARNING: Couldn't find the default mysqld binary.\n"; 173 print "Tried: $opt_mysqld\n"; 174 print "This is OK, if you are using option \"mysqld=...\" in "; 175 print "groups [mysqldN] separately for each.\n\n"; 176 } 177 if ($ARGV[0] =~ m/^start$/i) { 178 start_mysqlds(); 179 } elsif ($ARGV[0] =~ m/^reload$/i) { 180 reload_mysqlds(); 181 } 182 } 183 else 184 { 185 if (!defined(($mysqladmin= my_which($opt_mysqladmin))) && $opt_verbose) 186 { 187 print "WARNING: Couldn't find the default mysqladmin binary.\n"; 188 print "Tried: $opt_mysqladmin\n"; 189 print "This is OK, if you are using option \"mysqladmin=...\" in "; 190 print "groups [mysqldN] separately for each.\n\n"; 191 } 192 if ($ARGV[0] =~ m/^report$/i) 193 { 194 report_mysqlds(); 195 } 196 else 197 { 198 stop_mysqlds(); 199 } 200 } 201} 202 203# 204# Quote word for shell 205# 206 207sub quote_shell_word 208{ 209 my ($option)= @_; 210 211 $option =~ s!([^\w=./-])!\\$1!g; 212 return $option; 213} 214 215sub defaults_for_group 216{ 217 my ($group) = @_; 218 219 return () unless $my_print_defaults_exists; 220 221 my $com= join ' ', 'my_print_defaults', @defaults_options, $group; 222 my @defaults = `$com`; 223 chomp @defaults; 224 return @defaults; 225} 226 227#### 228#### Init log file. Check for appropriate place for log file, in the following 229#### order: my_print_defaults mysqld datadir, @datadir@ 230#### 231 232sub init_log 233{ 234 foreach my $opt (defaults_for_group('mysqld')) 235 { 236 if ($opt =~ m/^--datadir=(.*)/ && -d "$1" && -w "$1") 237 { 238 $logdir= $1; 239 } 240 } 241 if (!defined($logdir)) 242 { 243 $logdir= "@datadir@" if (-d "@datadir@" && -w "@datadir@"); 244 } 245 if (!defined($logdir)) 246 { 247 # Log file was not specified and we could not log to a standard place, 248 # so log file be disabled for now. 249 if (!$opt_silent) 250 { 251 print "WARNING: Log file disabled. Maybe directory or file isn't writable?\n"; 252 } 253 $opt_no_log= 1; 254 } 255 else 256 { 257 $opt_log= "$logdir/mysqld_multi.log"; 258 } 259} 260 261#### 262#### Report living and not running MySQL servers 263#### 264 265sub report_mysqlds 266{ 267 my (@groups, $com, $i, @options, $pec); 268 269 print "Reporting MySQL servers\n"; 270 if (!$opt_no_log) 271 { 272 w2log("\nReporting MySQL servers","$opt_log",0,0); 273 } 274 @groups = &find_groups($groupids); 275 for ($i = 0; defined($groups[$i]); $i++) 276 { 277 $com= get_mysqladmin_options($i, @groups); 278 $com.= " ping >> /dev/null 2>&1"; 279 system($com); 280 $pec = $? >> 8; 281 if ($pec) 282 { 283 print "MySQL server from group: $groups[$i] is not running\n"; 284 if (!$opt_no_log) 285 { 286 w2log("MySQL server from group: $groups[$i] is not running", 287 "$opt_log", 0, 0); 288 } 289 } 290 else 291 { 292 print "MySQL server from group: $groups[$i] is running\n"; 293 if (!$opt_no_log) 294 { 295 w2log("MySQL server from group: $groups[$i] is running", 296 "$opt_log", 0, 0); 297 } 298 } 299 } 300 if (!$i) 301 { 302 print "No groups to be reported (check your GNRs)\n"; 303 if (!$opt_no_log) 304 { 305 w2log("No groups to be reported (check your GNRs)", "$opt_log", 0, 0); 306 } 307 } 308} 309 310#### 311#### start multiple servers 312#### 313 314sub start_mysqlds() 315{ 316 my (@groups, $com, $tmp, $i, @options, $j, $mysqld_found, $info_sent); 317 318 if (!$opt_no_log) 319 { 320 w2log("\nStarting MySQL servers\n","$opt_log",0,0); 321 } 322 else 323 { 324 print "\nStarting MySQL servers\n"; 325 } 326 @groups = &find_groups($groupids); 327 for ($i = 0; defined($groups[$i]); $i++) 328 { 329 @options = defaults_for_group($groups[$i]); 330 331 $basedir_found= 0; # The default 332 $mysqld_found= 1; # The default 333 $mysqld_found= 0 if (!length($mysqld)); 334 335 # Initialize the command. 336 $com= "$mysqld"; 337 338 # Initialize the command option list, process the options, 339 # reset command if relevant, append key options to command line. 340 for ($j = 0, $tmp= ""; defined($options[$j]); $j++) 341 { 342 if ("--datadir=" eq substr($options[$j], 0, 10)) { 343 $datadir = $options[$j]; 344 $datadir =~ s/\-\-datadir\=//; 345 eval { mkpath($datadir) }; 346 if ($@) { 347 print "FATAL ERROR: Cannot create data directory $datadir: $!\n"; 348 exit(1); 349 } 350 # Quote and append 'datadir' to command line. 351 $options[$j]= quote_shell_word($options[$j]); 352 $tmp.= " $options[$j]"; 353 } 354 elsif ("--mysqladmin=" eq substr($options[$j], 0, 13)) 355 { 356 # catch this and ignore 357 } 358 elsif ("--mysqld=" eq substr($options[$j], 0, 9)) 359 { 360 $options[$j]=~ s/\-\-mysqld\=//; 361 # Reset command. 362 $com= $options[$j]; 363 $mysqld_found= 1; 364 } 365 elsif ("--basedir=" eq substr($options[$j], 0, 10)) 366 { 367 $basedir= $options[$j]; 368 $basedir =~ s/^--basedir=//; 369 $basedir_found= 1; 370 # Quote and append 'basedir' to command line. 371 $options[$j]= quote_shell_word($options[$j]); 372 $tmp.= " $options[$j]"; 373 } 374 else 375 { 376 # Quote and append additional options to command line. 377 $options[$j]= quote_shell_word($options[$j]); 378 $tmp.= " $options[$j]"; 379 } 380 } 381 if ($opt_verbose && $com =~ m/\/(safe_mysqld|mysqld_safe)$/ && !$info_sent) 382 { 383 print "WARNING: $1 is being used to start mysqld. In this case you "; 384 print "may need to pass\n\"ledir=...\" under groups [mysqldN] to "; 385 print "$1 in order to find the actual mysqld binary.\n"; 386 print "ledir (library executable directory) should be the path to the "; 387 print "wanted mysqld binary.\n\n"; 388 $info_sent= 1; 389 } 390 # Prepare command line by appending command and option list, and redirect output. 391 $com.= $tmp; 392 $com.= " >> $opt_log 2>&1" if (!$opt_no_log); 393 if (!$mysqld_found) 394 { 395 print "\n"; 396 print "FATAL ERROR: Tried to start mysqld under group [$groups[$i]], "; 397 print "but no mysqld binary was found.\n"; 398 print "Please add \"mysqld=...\" in group [mysqld_multi], or add it to "; 399 print "group [$groups[$i]] separately.\n"; 400 exit(1); 401 } 402 if ($basedir_found) 403 { 404 $curdir=getcwd(); 405 chdir($basedir) or die "Can't change to datadir $basedir"; 406 } 407 # Prepare datadir by initializing the server, unless this is already done. 408 if (! -d $datadir."/mysql") { 409 if (-w $datadir) { 410 print "\n\nInstalling new database in $datadir\n\n"; 411 system($com." --initialize"); 412 } else { 413 print "\n"; 414 print "FATAL ERROR: Tried to create mysqld under group [$groups[$i]],\n"; 415 print "but the data directory is not writable.\n"; 416 print "data directory used: $datadir\n"; 417 exit(1); 418 } 419 } 420 if (! -d $datadir."/mysql") { 421 print "\n"; 422 print "FATAL ERROR: Tried to start mysqld under group [$groups[$i]],\n"; 423 print "but no data directory was found or could be created.\n"; 424 print "data directory used: $datadir\n"; 425 exit(1); 426 } 427 # Start the command in the background. 428 system($com." &"); 429 if ($basedir_found) 430 { 431 chdir($curdir) or die "Can't change back to original dir $curdir"; 432 } 433 } 434 if (!$i && !$opt_no_log) 435 { 436 w2log("No MySQL servers to be started (check your GNRs)", 437 "$opt_log", 0, 0); 438 } 439} 440 441#### 442#### reload multiple servers 443#### 444 445sub reload_mysqlds() 446{ 447 my (@groups, $com, $tmp, $i, @options, $j); 448 449 if (!$opt_no_log) 450 { 451 w2log("\nReloading MySQL servers\n","$opt_log",0,0); 452 } 453 else 454 { 455 print "\nReloading MySQL servers\n"; 456 } 457 @groups = &find_groups($groupids); 458 for ($i = 0; defined($groups[$i]); $i++) 459 { 460 $mysqld_server = $mysqld; 461 @options = defaults_for_group($groups[$i]); 462 463 for ($j = 0, $tmp= ""; defined($options[$j]); $j++) 464 { 465 if ("--mysqladmin=" eq substr($options[$j], 0, 13)) 466 { 467 # catch this and ignore 468 } 469 elsif ("--mysqld=" eq substr($options[$j], 0, 9)) 470 { 471 $options[$j] =~ s/\-\-mysqld\=//; 472 $mysqld_server = $options[$j]; 473 } 474 elsif ("--pid-file=" eq substr($options[$j], 0, 11)) 475 { 476 $options[$j] =~ s/\-\-pid-file\=//; 477 $pid_file = $options[$j]; 478 } 479 } 480 $com = "killproc -p $pid_file -HUP $mysqld_server"; 481 system($com); 482 483 $com = "touch $pid_file"; 484 system($com); 485 } 486 if (!$i && !$opt_no_log) 487 { 488 w2log("No MySQL servers to be reloaded (check your GNRs)", 489 "$opt_log", 0, 0); 490 } 491} 492 493### 494#### stop multiple servers 495#### 496 497sub stop_mysqlds() 498{ 499 my (@groups, $com, $i, @options); 500 501 if (!$opt_no_log) 502 { 503 w2log("\nStopping MySQL servers\n","$opt_log",0,0); 504 } 505 else 506 { 507 print "\nStopping MySQL servers\n"; 508 } 509 @groups = &find_groups($groupids); 510 for ($i = 0; defined($groups[$i]); $i++) 511 { 512 $com= get_mysqladmin_options($i, @groups); 513 $com.= " shutdown"; 514 $com.= " >> $opt_log 2>&1" if (!$opt_no_log); 515 $com.= " &"; 516 system($com); 517 } 518 if (!$i && !$opt_no_log) 519 { 520 w2log("No MySQL servers to be stopped (check your GNRs)", 521 "$opt_log", 0, 0); 522 } 523} 524 525#### 526#### Sub function for mysqladmin option parsing 527#### 528 529sub get_mysqladmin_options 530{ 531 my ($i, @groups)= @_; 532 my ($mysqladmin_found, $com, $tmp, $j); 533 534 @options = defaults_for_group($groups[$i]); 535 536 $mysqladmin_found= 1; # The default 537 $mysqladmin_found= 0 if (!length($mysqladmin)); 538 $com = "$mysqladmin"; 539 $tmp = " -u $opt_user"; 540 if (defined($opt_password)) { 541 my $pw= $opt_password; 542 # Protect single quotes in password 543 $pw =~ s/'/'"'"'/g; 544 $tmp.= " -p'$pw'"; 545 } 546 $tmp.= $opt_tcp_ip ? " -h 127.0.0.1" : ""; 547 for ($j = 0; defined($options[$j]); $j++) 548 { 549 if ("--mysqladmin=" eq substr($options[$j], 0, 13)) 550 { 551 $options[$j]=~ s/\-\-mysqladmin\=//; 552 $com= $options[$j]; 553 $mysqladmin_found= 1; 554 } 555 elsif ((($options[$j] =~ m/^(\-\-socket\=)(.*)$/) && !$opt_tcp_ip) || 556 ($options[$j] =~ m/^(\-\-port\=)(.*)$/)) 557 { 558 $tmp.= " $options[$j]"; 559 } 560 } 561 if (!$mysqladmin_found) 562 { 563 print "\n"; 564 print "FATAL ERROR: Tried to use mysqladmin in group [$groups[$i]], "; 565 print "but no mysqladmin binary was found.\n"; 566 print "Please add \"mysqladmin=...\" in group [mysqld_multi], or "; 567 print "in group [$groups[$i]].\n"; 568 exit(1); 569 } 570 $com.= $tmp; 571 return $com; 572} 573 574# Return a list of option files which can be opened. Similar, but not 575# identical, to behavior of my_search_option_files() 576sub list_defaults_files 577{ 578 my %opt; 579 foreach (@defaults_options) 580 { 581 return () if /^--no-defaults$/; 582 $opt{$1} = $2 if /^--defaults-(extra-file|file)=(.*)$/; 583 } 584 585 return ($opt{file}) if exists $opt{file}; 586 587 my %seen; # Don't list the same file more than once 588 return grep { defined $_ and not $seen{$_}++ and -f $_ and -r $_ } 589 ('/etc/my.cnf', 590 '/etc/mysql/my.cnf', 591 '@sysconfdir@/my.cnf', 592 ($ENV{MYSQL_HOME} ? "$ENV{MYSQL_HOME}/my.cnf" : undef), 593 $opt{'extra-file'}, 594 ($ENV{HOME} ? "$ENV{HOME}/.my.cnf" : undef)); 595} 596 597 598# Takes a specification of GNRs (see --help), and returns a list of matching 599# groups which actually are mentioned in a relevant config file 600sub find_groups 601{ 602 my ($raw_gids) = @_; 603 604 my %gids; 605 my @groups; 606 607 if (defined($raw_gids)) 608 { 609 # Make a hash of the wanted group ids 610 foreach my $raw_gid (split ',', $raw_gids) 611 { 612 # Match 123 or 123-456 613 my ($start, $end) = ($raw_gid =~ /^\s*(\d+)(?:\s*-\s*(\d+))?\s*$/); 614 $end = $start if not defined $end; 615 if (not defined $start or $end < $start or $start < 0) 616 { 617 print "ABORT: Bad GNR: $raw_gid; see $my_progname --help\n"; 618 exit(1); 619 } 620 621 foreach my $i ($start .. $end) 622 { 623 # Use $i + 0 to normalize numbers (002 + 0 -> 2) 624 $gids{$i + 0}= 1; 625 } 626 } 627 } 628 629 my @defaults_files = list_defaults_files(); 630 #warn "@{[sort keys %gids]} -> @defaults_files\n"; 631 foreach my $file (@defaults_files) 632 { 633 next unless open CONF, "< $file"; 634 635 while (<CONF>) 636 { 637 if (/^\s*\[\s*(mysqld)(\d+)\s*\]\s*$/) 638 { 639 #warn "Found a group: $1$2\n"; 640 # Use $2 + 0 to normalize numbers (002 + 0 -> 2) 641 if (not defined($raw_gids) or $gids{$2 + 0}) 642 { 643 push @groups, "$1$2"; 644 } 645 } 646 } 647 648 close CONF; 649 } 650 return @groups; 651} 652 653#### 654#### w2log: Write to a logfile. 655#### 1.arg: append to the log file (given string, or from a file. if a file, 656#### file will be read from $opt_logdir) 657#### 2.arg: logfile -name (w2log assumes that the logfile is in $opt_logdir). 658#### 3.arg. 0 | 1, if true, print current date to the logfile. 3. arg will 659#### be ignored, if 1. arg is a file. 660#### 4.arg. 0 | 1, if true, first argument is a file, else a string 661#### 662 663sub w2log 664{ 665 my ($msg, $file, $date_flag, $is_file)= @_; 666 my (@data); 667 668 open (LOGFILE, ">>$opt_log") 669 or die "FATAL: w2log: Couldn't open log file: $opt_log\n"; 670 671 if ($is_file) 672 { 673 open (FROMFILE, "<$msg") && (@data=<FROMFILE>) && 674 close(FROMFILE) 675 or die "FATAL: w2log: Couldn't open file: $msg\n"; 676 foreach my $line (@data) 677 { 678 print LOGFILE "$line"; 679 } 680 } 681 else 682 { 683 print LOGFILE "$msg"; 684 print LOGFILE strftime "%a %b %e %H:%M:%S %Y", localtime if ($date_flag); 685 print LOGFILE "\n"; 686 } 687 close (LOGFILE); 688 return; 689} 690 691#### 692#### my_which is used, because we can't assume that every system has the 693#### which -command. my_which can take only one argument at a time. 694#### Return values: requested system command with the first found path, 695#### or undefined, if not found. 696#### 697 698sub my_which 699{ 700 my ($command) = @_; 701 my (@paths, $path); 702 703 # If the argument is not 'my_print_defaults' then it would be of the format 704 # <absolute_path>/<program> 705 return $command if ($command ne 'my_print_defaults' && -f $command && 706 -x $command); 707 708 @paths = split(':', $ENV{'PATH'}); 709 foreach $path (@paths) 710 { 711 $path .= "/$command"; 712 return $path if (-f $path && -x $path); 713 } 714 return undef(); 715} 716 717 718#### 719#### example 720#### 721 722sub example 723{ 724 print <<EOF; 725# This is an example of a my.cnf file for $my_progname. 726# Usually this file is located in home dir ~/.my.cnf or /etc/my.cnf 727# 728# SOME IMPORTANT NOTES FOLLOW: 729# 730# 1.COMMON USER 731# 732# Make sure that the MySQL user, who is stopping the mysqld services, has 733# the same password to all MySQL servers being accessed by $my_progname. 734# This user needs to have the 'Shutdown_priv' -privilege, but for security 735# reasons should have no other privileges. It is advised that you create a 736# common 'multi_admin' user for all MySQL servers being controlled by 737# $my_progname. Here is an example how to do it: 738# 739# GRANT SHUTDOWN ON *.* TO multi_admin\@localhost IDENTIFIED BY 'password' 740# 741# You will need to apply the above to all MySQL servers that are being 742# controlled by $my_progname. 'multi_admin' will shutdown the servers 743# using 'mysqladmin' -binary, when '$my_progname stop' is being called. 744# 745# 2.PID-FILE 746# 747# If you are using mysqld_safe to start mysqld, make sure that every 748# MySQL server has a separate pid-file. In order to use mysqld_safe 749# via $my_progname, you need to use two options: 750# 751# mysqld=/path/to/mysqld_safe 752# ledir=/path/to/mysqld-binary/ 753# 754# ledir (library executable directory), is an option that only mysqld_safe 755# accepts, so you will get an error if you try to pass it to mysqld directly. 756# For this reason you might want to use the above options within [mysqld#] 757# group directly. 758# 759# 3.DATA DIRECTORY 760# 761# It is NOT advised to run many MySQL servers within the same data directory. 762# You can do so, but please make sure to understand and deal with the 763# underlying caveats. In short they are: 764# - Speed penalty 765# - Risk of table/data corruption 766# - Data synchronising problems between the running servers 767# - Heavily media (disk) bound 768# - Relies on the system (external) file locking 769# - Is not applicable with all table types. (Such as InnoDB) 770# Trying so will end up with undesirable results. 771# 772# 4.TCP/IP Port 773# 774# Every server requires one and it must be unique. 775# 776# 5.[mysqld#] Groups 777# 778# In the example below the first and the fifth mysqld group was 779# intentionally left out. You may have 'gaps' in the config file. This 780# gives you more flexibility. 781# 782# 6.MySQL Server User 783# 784# You can pass the user=... option inside [mysqld#] groups. This 785# can be very handy in some cases, but then you need to run $my_progname 786# as UNIX root. 787# 788# 7.A Start-up Manage Script for $my_progname 789# 790# In the recent MySQL distributions you can find a file called 791# mysqld_multi.server.sh. It is a wrapper for $my_progname. This can 792# be used to start and stop multiple servers during boot and shutdown. 793# 794# You can place the file in /etc/init.d/mysqld_multi.server.sh and 795# make the needed symbolic links to it from various run levels 796# (as per Linux/Unix standard). You may even replace the 797# /etc/init.d/mysql.server script with it. 798# 799# Before using, you must create a my.cnf file either in @sysconfdir@/my.cnf 800# or /root/.my.cnf and add the [mysqld_multi] and [mysqld#] groups. 801# 802# The script can be found from support-files/mysqld_multi.server.sh 803# in MySQL distribution. (Verify the script before using) 804# 805 806[mysqld_multi] 807mysqld = @bindir@/mysqld_safe 808mysqladmin = @bindir@/mysqladmin 809user = multi_admin 810password = my_password 811 812[mysqld2] 813socket = /tmp/mysql.sock2 814port = 3307 815pid-file = @localstatedir@2/hostname.pid2 816datadir = @localstatedir@2 817language = @datadir@/mysql/english 818user = unix_user1 819 820[mysqld3] 821mysqld = /path/to/mysqld_safe 822ledir = /path/to/mysqld-binary/ 823mysqladmin = /path/to/mysqladmin 824socket = /tmp/mysql.sock3 825port = 3308 826pid-file = @localstatedir@3/hostname.pid3 827datadir = @localstatedir@3 828language = @datadir@/mysql/swedish 829user = unix_user2 830 831[mysqld4] 832socket = /tmp/mysql.sock4 833port = 3309 834pid-file = @localstatedir@4/hostname.pid4 835datadir = @localstatedir@4 836language = @datadir@/mysql/estonia 837user = unix_user3 838 839[mysqld6] 840socket = /tmp/mysql.sock6 841port = 3311 842pid-file = @localstatedir@6/hostname.pid6 843datadir = @localstatedir@6 844language = @datadir@/mysql/japanese 845user = unix_user4 846EOF 847 exit(0); 848} 849 850#### 851#### usage 852#### 853 854sub usage 855{ 856 print <<EOF; 857$my_progname version $VER by Jani Tolonen 858 859Description: 860$my_progname can be used to start, reload, or stop any number of separate 861mysqld processes running in different TCP/IP ports and UNIX sockets. 862 863$my_progname can read group [mysqld_multi] from my.cnf file. You may 864want to put options mysqld=... and mysqladmin=... there. Since 865version 2.10 these options can also be given under groups [mysqld#], 866which gives more control over different versions. One can have the 867default mysqld and mysqladmin under group [mysqld_multi], but this is 868not mandatory. Please note that if mysqld or mysqladmin is missing 869from both [mysqld_multi] and [mysqld#], a group that is tried to be 870used, $my_progname will abort with an error. 871 872$my_progname will search for groups named [mysqld#] from my.cnf (or 873the given --defaults-extra-file=...), where '#' can be any positive 874integer starting from 1. These groups should be the same as the regular 875[mysqld] group, but with those port, socket and any other options 876that are to be used with each separate mysqld process. The number 877in the group name has another function; it can be used for starting, 878reloading, stopping, or reporting any specific mysqld server. 879 880Usage: $my_progname [OPTIONS] {start|reload|stop|report} [GNR,GNR,GNR...] 881or $my_progname [OPTIONS] {start|reload|stop|report} [GNR-GNR,GNR,GNR-GNR,...] 882 883The GNR means the group number. You can start, reload, stop or report any GNR, 884or several of them at the same time. (See --example) The GNRs list can 885be comma separated or a dash combined. The latter means that all the 886GNRs between GNR1-GNR2 will be affected. Without GNR argument all the 887groups found will either be started, reloaded, stopped, or reported. Note that 888syntax for specifying GNRs must appear without spaces. 889 890Options: 891 892These options must be given before any others: 893--no-defaults Do not read any defaults file 894--defaults-file=... Read only this configuration file, do not read the 895 standard system-wide and user-specific files 896--defaults-extra-file=... Read this configuration file in addition to the 897 standard system-wide and user-specific files 898Using: @{[join ' ', @defaults_options]} 899 900--example Give an example of a config file with extra information. 901--help Print this help and exit. 902--log=... Log file. Full path to and the name for the log file. NOTE: 903 If the file exists, everything will be appended. 904 Using: $opt_log 905--mysqladmin=... mysqladmin binary to be used for a server shutdown. 906 Since version 2.10 this can be given within groups [mysqld#] 907 Using: $mysqladmin 908--mysqld=... mysqld binary to be used. Note that you can give mysqld_safe 909 to this option also. The options are passed to mysqld. Just 910 make sure you have mysqld in your PATH or fix mysqld_safe. 911 Using: $mysqld 912 Please note: Since mysqld_multi version 2.3 you can also 913 give this option inside groups [mysqld#] in ~/.my.cnf, 914 where '#' stands for an integer (number) of the group in 915 question. This will be recognised as a special option and 916 will not be passed to the mysqld. This will allow one to 917 start different mysqld versions with mysqld_multi. 918--no-log Print to stdout instead of the log file. By default the log 919 file is turned on. 920--password=... Password for mysqladmin user. 921--silent Disable warnings. 922--tcp-ip Connect to the MySQL server(s) via the TCP/IP port instead 923 of the UNIX socket. This affects stopping and reporting. 924 If a socket file is missing, the server may still be 925 running, but can be accessed only via the TCP/IP port. 926 By default connecting is done via the UNIX socket. 927--user=... mysqladmin user. Using: $opt_user 928--verbose Be more verbose. 929--version Print the version number and exit. 930EOF 931 exit(0); 932} 933