mysqld_multi
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上传日期:2019-04-29
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文件大小:19k
- #!/usr/bin/perl
- use Getopt::Long;
- use POSIX qw(strftime);
- $|=1;
- $VER="2.2";
- $opt_config_file = undef();
- $opt_example = 0;
- $opt_help = 0;
- $opt_log = "/tmp/mysqld_multi.log";
- $opt_mysqladmin = "/usr/local/mysql/bin/mysqladmin";
- $opt_mysqld = "/usr/local/mysql/libexec/mysqld";
- $opt_no_log = 0;
- $opt_password = undef();
- $opt_tcp_ip = 0;
- $opt_user = "root";
- $opt_version = 0;
- my ($mysqld, $mysqladmin, $groupids, $homedir, $my_progname);
- $homedir = $ENV{HOME};
- $my_progname = $0;
- $my_progname =~ s/.*[/]//;
- main();
- ####
- #### main sub routine
- ####
- sub main
- {
- my ($flag_exit);
- if (!defined(my_which(my_print_defaults)))
- {
- # We can't throw out yet, since --version, --help, or --example may
- # have been given
- print "WARNING! my_print_defaults command not found!n";
- print "Please make sure you have this command available andn";
- print "in your path. The command is available from the latestn";
- print "MySQL distribution.n";
- }
- my @defops = `my_print_defaults mysqld_multi`;
- chop @defops;
- splice @ARGV, 0, 0, @defops;
- GetOptions("help","example","version","mysqld=s","mysqladmin=s",
- "config-file=s","user=s","password=s","log=s","no-log","tcp-ip")
- || die "Wrong option! See $my_progname --help for detailed information!n";
- $groupids = $ARGV[1];
- if ($opt_version)
- {
- print "$my_progname version $VER by Jani Tolonenn";
- exit(0);
- }
- example() if ($opt_example);
- if (!defined(($mysqld = my_which($opt_mysqld))))
- {
- print "Couldn't find the mysqld binary! Tried: $opt_mysqldn";
- $flag_exit=1;
- }
- if (!defined(($mysqladmin = my_which($opt_mysqladmin))))
- {
- print "Couldn't find the mysqladmin binary! Tried: $opt_mysqladminn";
- $flag_exit=1;
- }
- usage() if ($opt_help);
- if ($flag_exit)
- {
- print "Error with an option, see $my_progname --help for more info!n";
- exit(1);
- }
- if (!defined(my_which(my_print_defaults)))
- {
- print "ABORT: Can't find command 'my_print_defaults'!n";
- print "This command is available from the latest MySQLn";
- print "distribution. Please make sure you have the commandn";
- print "in your PATH.n";
- exit(1);
- }
- usage() if (!defined($ARGV[0]) ||
- ($ARGV[0] ne 'start' && $ARGV[0] ne 'START' &&
- $ARGV[0] ne 'stop' && $ARGV[0] ne 'STOP' &&
- $ARGV[0] ne 'report' && $ARGV[0] ne 'REPORT'));
- if (!$opt_no_log)
- {
- w2log("$my_progname log file version $VER; run: ",
- "$opt_log", 1, 0);
- }
- else
- {
- print "$my_progname log file version $VER; run: ";
- print strftime "%a %b %e %H:%M:%S %Y", localtime;
- print "n";
- }
- if ($ARGV[0] eq 'report' || $ARGV[0] eq 'REPORT')
- {
- report_mysqlds();
- }
- elsif ($ARGV[0] eq 'start' || $ARGV[0] eq 'START')
- {
- start_mysqlds();
- }
- else
- {
- stop_mysqlds();
- }
- }
- ####
- #### Report living and not running MySQL servers
- ####
- sub report_mysqlds
- {
- my (@groups, $com, $i, @options, $j, $pec);
- print "Reporting MySQL serversn";
- if (!$opt_no_log)
- {
- w2log("nReporting MySQL servers","$opt_log",0,0);
- }
- @groups = &find_groups($groupids);
- for ($i = 0; defined($groups[$i]); $i++)
- {
- $com = "my_print_defaults";
- $com.= defined($opt_config_file) ? " --config-file=$opt_config_file" : "";
- $com.= " $groups[$i]";
- @options = `$com`;
- chop @options;
- $com = "$mysqladmin -u $opt_user";
- $com.= defined($opt_password) ? " -p$opt_password" : "";
- $com.= $opt_tcp_ip ? " -h 127.0.0.1" : "";
- for ($j = 0; defined($options[$j]); $j++)
- {
- if ((($options[$j] =~ m/^(--socket=)(.*)$/) && !$opt_tcp_ip) ||
- ($options[$j] =~ m/^(--port=)(.*)$/))
- {
- $com.= " $options[$j]";
- }
- }
- $com.= " ping >> /dev/null 2>&1";
- system($com);
- $pec = $? >> 8;
- if ($pec)
- {
- print "MySQL server from group: $groups[$i] is not runningn";
- if (!$opt_no_log)
- {
- w2log("MySQL server from group: $groups[$i] is not running",
- "$opt_log", 0, 0);
- }
- }
- else
- {
- print "MySQL server from group: $groups[$i] is runningn";
- if (!$opt_no_log)
- {
- w2log("MySQL server from group: $groups[$i] is running",
- "$opt_log", 0, 0);
- }
- }
- }
- if (!$i)
- {
- print "No groups to be reported (check your GNRs)n";
- if (!$opt_no_log)
- {
- w2log("No groups to be reported (check your GNRs)", "$opt_log", 0, 0);
- }
- }
- }
- ####
- #### start multiple servers
- ####
- sub start_mysqlds()
- {
- my (@groups, $com, $i, @options, $j);
- if (!$opt_no_log)
- {
- w2log("nStarting MySQL serversn","$opt_log",0,0);
- }
- else
- {
- print "nStarting MySQL serversn";
- }
- @groups = &find_groups($groupids);
- for ($i = 0; defined($groups[$i]); $i++)
- {
- $com = "my_print_defaults";
- $com.= defined($opt_config_file) ? " --config-file=$opt_config_file" : "";
- $com.= " $groups[$i]";
- @options = `$com`;
- chop @options;
- $com = "$mysqld";
- for ($j = 0; defined($options[$j]); $j++)
- {
- $com.= " $options[$j]";
- }
- $com.= " >> $opt_log 2>&1" if (!$opt_no_log);
- $com.= " &";
- system($com);
- }
- if (!$i && !$opt_no_log)
- {
- w2log("No MySQL servers to be started (check your GNRs)",
- "$opt_log", 0, 0);
- }
- }
- ####
- #### stop multiple servers
- ####
- sub stop_mysqlds()
- {
- my (@groups, $com, $i, @options, $j);
- if (!$opt_no_log)
- {
- w2log("nStopping MySQL serversn","$opt_log",0,0);
- }
- else
- {
- print "nStopping MySQL serversn";
- }
- @groups = &find_groups($groupids);
- for ($i = 0; defined($groups[$i]); $i++)
- {
- $com = "my_print_defaults";
- $com.= defined($opt_config_file) ? " --config-file=$opt_config_file" : "";
- $com.= " $groups[$i]";
- @options = `$com`;
- chop @options;
- $com = "$mysqladmin -u $opt_user";
- $com.= defined($opt_password) ? " -p$opt_password" : "";
- $com.= $opt_tcp_ip ? " -h 127.0.0.1" : "";
- for ($j = 0; defined($options[$j]); $j++)
- {
- if ((($options[$j] =~ m/^(--socket=)(.*)$/) && !$opt_tcp_ip) ||
- ($options[$j] =~ m/^(--port=)(.*)$/))
- {
- $com.= " $options[$j]";
- }
- }
- $com.= " shutdown";
- $com.= " >> $opt_log 2>&1" if (!$opt_no_log);
- $com.= " &";
- system($com);
- }
- if (!$i && !$opt_no_log)
- {
- w2log("No MySQL servers to be stopped (check your GNRs)",
- "$opt_log", 0, 0);
- }
- }
- ####
- #### Find groups. Takes the valid group numbers as an argument, parses
- #### them, puts them in the ascending order, removes duplicates and
- #### returns the wanted groups accordingly.
- ####
- sub find_groups
- {
- my ($raw_gids) = @_;
- my (@groups, @data, @tmp, $line, $i, $k, @pre_gids, @gids, @tmp2,
- $prev_value);
- # Read the lines from the config file to variable 'data'
- if (defined($opt_config_file))
- {
- open(MY_CNF, "<$opt_config_file") && (@data=<MY_CNF>) && close(MY_CNF);
- }
- else
- {
- if (-f "/etc/my.cnf" && -r "/etc/my.cnf")
- {
- open(MY_CNF, "</etc/my.cnf") && (@tmp=<MY_CNF>) && close(MY_CNF);
- }
- for ($i = 0; ($line = shift @tmp); $i++)
- {
- $data[$i] = $line;
- }
- if (-f "$homedir/.my.cnf" && -r "$homedir/.my.cnf")
- {
- open(MY_CNF, "<$homedir/.my.cnf") && (@tmp=<MY_CNF>) && close(MY_CNF);
- }
- for (; ($line = shift @tmp); $i++)
- {
- $data[$i] = $line;
- }
- }
- chop @data;
- # Make a list of the wanted group ids
- if (defined($raw_gids))
- {
- @pre_gids = split(',', $raw_gids);
- }
- if (defined($raw_gids))
- {
- for ($i = 0, $j = 0; defined($pre_gids[$i]); $i++)
- {
- if ($pre_gids[$i] =~ m/^(d+)$/)
- {
- $gids[$j] = $1;
- $j++;
- }
- elsif ($pre_gids[$i] =~ m/^(d+)(-)(d+)$/)
- {
- for ($k = $1; $k <= $3; $k++)
- {
- $gids[$j] = $k;
- $j++;
- }
- }
- else
- {
- print "ABORT: Bad GNR: $pre_gids[$i] See $my_progname --helpn";
- exit(1);
- }
- }
- }
- # Sort the list of gids numerically in ascending order
- @gids = sort {$a <=> $b} @gids;
- # Remove non-positive integers and duplicates
- for ($i = 0, $j = 0; defined($gids[$i]); $i++)
- {
- next if ($gids[$i] <= 0);
- if (!$i || $prev_value != $gids[$i])
- {
- $tmp2[$j] = $gids[$i];
- $j++;
- }
- $prev_value = $gids[$i];
- }
- @gids = @tmp2;
- # Find and return the wanted groups
- for ($i = 0, $j = 0; defined($data[$i]); $i++)
- {
- if ($data[$i] =~ m/^(s*[s*)(mysqld)(d+)(s*]s*)$/)
- {
- if (defined($raw_gids))
- {
- for ($k = 0; defined($gids[$k]); $k++)
- {
- if ($gids[$k] == $3)
- {
- $groups[$j] = $2 . $3;
- $j++;
- }
- }
- }
- else
- {
- $groups[$j] = $2 . $3;
- $j++;
- }
- }
- }
- return @groups;
- }
- ####
- #### w2log: Write to a logfile.
- #### 1.arg: append to the log file (given string, or from a file. if a file,
- #### file will be read from $opt_logdir)
- #### 2.arg: logfile -name (w2log assumes that the logfile is in $opt_logdir).
- #### 3.arg. 0 | 1, if true, print current date to the logfile. 3. arg will
- #### be ignored, if 1. arg is a file.
- #### 4.arg. 0 | 1, if true, first argument is a file, else a string
- ####
- sub w2log
- {
- my ($msg, $file, $date_flag, $is_file)= @_;
- my (@data);
- open (LOGFILE, ">>$opt_log")
- or die "FATAL: w2log: Couldn't open log file: $opt_logn";
- if ($is_file)
- {
- open (FROMFILE, "<$msg") && (@data=<FROMFILE>) &&
- close(FROMFILE)
- or die "FATAL: w2log: Couldn't open file: $msgn";
- foreach my $line (@data)
- {
- print LOGFILE "$line";
- }
- }
- else
- {
- print LOGFILE "$msg";
- print LOGFILE strftime "%a %b %e %H:%M:%S %Y", localtime if ($date_flag);
- print LOGFILE "n";
- }
- close (LOGFILE);
- return;
- }
- ####
- #### my_which is used, because we can't assume that every system has the
- #### which -command. my_which can take only one argument at a time.
- #### Return values: requested system command with the first found path,
- #### or undefined, if not found.
- ####
- sub my_which
- {
- my ($command) = @_;
- my (@paths, $path);
- return $command if (-f $command && -x $command);
- @paths = split(':', $ENV{'PATH'});
- foreach $path (@paths)
- {
- $path .= "/$command";
- return $path if (-f $path && -x $path);
- }
- return undef();
- }
- ####
- #### example
- ####
- sub example
- {
- print <<EOF;
- # This is an example of a my.cnf file on behalf of $my_progname.
- # This file should probably be in your home dir (~/.my.cnf) or /etc/my.cnf
- # Version $VER by Jani Tolonen
- # NOTES:
- # 1.Make sure that the MySQL user, who is stopping the mysqld services (e.g
- # using the mysqladmin) have the same password and username for all the
- # data directories accessed (to the 'mysql' database) And make sure that
- # the user has the 'Shutdown_priv' privilege! If you have many data-
- # directories and many different 'mysql' databases with different passwords
- # for the MySQL 'root' user, you may want to create a common 'multi_admin'
- # user for each using the same password (see below). Example how to do it:
- # shell> mysql -u root -S /tmp/mysql.sock -proot_password -e
- # "GRANT SHUTDOWN ON *.* TO multi_admin@localhost IDENTIFIED BY 'multipass'"
- # You will have to do the above for each mysqld running in each data
- # directory, that you have (just change the socket, -S=...)
- # See more detailed information from chapter:
- # '6 The MySQL Access Privilege System' from the MySQL manual.
- # 2.pid-file is very important, if you are using safe_mysqld to start mysqld
- # (e.g. --mysqld=safe_mysqld) Every mysqld should have it's own pid-file.
- # The advantage using safe_mysqld instead of mysqld directly here is, that
- # safe_mysqld 'guards' every mysqld process and will restart it, if mysqld
- # process fails due to signal kill -9, or similar. (Like segmentation fault,
- # which MySQL should never do, of course ;) Please note that safe_mysqld
- # script may require that you start it from a certain place. This means that
- # you may have to CD to a certain directory, before you start the
- # mysqld_multi. If you have problems starting, please see the script.
- # Check especially the lines:
- # --------------------------------------------------------------------------
- # MY_PWD=`pwd`
- # Check if we are starting this relative (for the binary release)
- # if test -d $MY_PWD/data/mysql -a -f ./share/mysql/english/errmsg.sys -a
- # -x ./bin/mysqld
- # --------------------------------------------------------------------------
- # The above test should be successful, or you may encounter problems.
- # 3.Beware of the dangers starting multiple mysqlds in the same data directory.
- # Use separate data directories, unless you *KNOW* what you are doing!
- # 4.The socket file and the TCP/IP port must be different for every mysqld.
- # 5.The first and fifth mysqld was intentionally left out from the example.
- # You may have 'gaps' in the config file. This gives you more flexibility.
- # The order in which the mysqlds are started or stopped depends on the order
- # in which they appear in the config file.
- # 6.When you want to refer to a certain group with GNR with this program,
- # just use the number in the end of the group name ( [mysqld# <== )
- # 7.You may want to use option '--user' for mysqld, but in order to do this
- # you need to be root when you start this script. Having the option
- # in the config file doesn't matter; you will just get a warning, if you are
- # not the superuser and the mysqlds are started under *your* unix account.
- # IMPORTANT: Make sure that the pid-file and the data directory are
- # read+write(+execute for the latter one) accessible for *THAT* UNIX user,
- # who the specific mysqld process is started as. *DON'T* use the UNIX root
- # account for this, unless you *KNOW* what you are doing!
- # 8.MOST IMPORTANT: Make sure that you understand the meanings of the options
- # that are passed to the mysqlds and why *WOULD YOU WANT* to have separate
- # mysqld processes. Starting multiple mysqlds in one data directory *WON'T*
- # give you extra performance in a threaded system!
- #
- [mysqld_multi]
- mysqld = /usr/local/mysql/bin/safe_mysqld
- mysqladmin = /usr/local/mysql/bin/mysqladmin
- user = multi_admin
- password = multipass
- [mysqld2]
- socket = /tmp/mysql.sock2
- port = 3307
- pid-file = /usr/local/mysql/var2/hostname.pid2
- datadir = /usr/local/mysql/var2
- language = /usr/local/mysql/share/mysql/english
- user = john
- [mysqld3]
- socket = /tmp/mysql.sock3
- port = 3308
- pid-file = /usr/local/mysql/var3/hostname.pid3
- datadir = /usr/local/mysql/var3
- language = /usr/local/mysql/share/mysql/swedish
- user = monty
- [mysqld4]
- socket = /tmp/mysql.sock4
- port = 3309
- pid-file = /usr/local/mysql/var4/hostname.pid4
- datadir = /usr/local/mysql/var4
- language = /usr/local/mysql/share/mysql/estonia
- user = tonu
-
- [mysqld6]
- socket = /tmp/mysql.sock6
- port = 3311
- pid-file = /usr/local/mysql/var6/hostname.pid6
- datadir = /usr/local/mysql/var6
- language = /usr/local/mysql/share/mysql/japanese
- user = jani
- EOF
- exit(0);
- }
- ####
- #### usage
- ####
- sub usage
- {
- print <<EOF;
- $my_progname version $VER by Jani Tolonen
- This software comes with ABSOLUTELY NO WARRANTY. This is free software,
- and you are welcome to modify and redistribute it under the GPL license.
- Description:
- $my_progname can be used to start, or stop any number of separate
- mysqld processes running in different TCP/IP ports and UNIX sockets.
- This program can read group [mysqld_multi] from my.cnf file.
- You may want to put options mysqld=... and mysqladmin=... there.
- The program will search for group(s) named [mysqld#] from my.cnf (or
- the given --config-file=...), where # can be any positive number
- starting from 1. These groups should be the same as the usual [mysqld]
- group (e.g. options to mysqld, see MySQL manual for detailed
- information about this group), but with those port, socket
- etc. options that are wanted for each separate mysqld processes. The
- number in the group name has another function; it can be used for
- starting, stopping, or reporting some specific mysqld servers with
- this program. See the usage and options below for more information.
- Usage: $my_progname [OPTIONS] {start|stop|report} [GNR,GNR,GNR...]
- or $my_progname [OPTIONS] {start|stop|report} [GNR-GNR,GNR,GNR-GNR,...]
- The GNR above means the group number. You can start, stop or report
- any GNR, or several of them at the same time. (See --example) The GNRs
- list can be comma separated, or a dash combined, of which the latter
- means that all the GNRs between GNR1-GNR2 will be affected. Without
- GNR argument all the found groups will be either started, stopped, or
- reported. Note that you must not have any white spaces in the GNR
- list. Anything after a white space are ignored.
- Options:
- --config-file=... Alternative config file. NOTE: This will not affect
- this program's own options (group [mysqld_multi]),
- but only groups [mysqld#]. Without this option everything
- will be searched from the ordinary my.cnf file.
- Using: $opt_config_file
- --example Give an example of a config file. (PLEASE DO CHECK THIS!)
- --help Print this help and exit.
- --log=... Log file. Full path to and the name for the log file. NOTE:
- If the file exists, everything will be appended.
- Using: $opt_log
- --mysqladmin=... mysqladmin binary to be used for a server shutdown.
- Using: $mysqladmin
- --mysqld=... mysqld binary to be used. Note that you can give safe_mysqld
- to this option also. The options are passed to mysqld. Just
- make sure you have mysqld in your PATH or fix safe_mysqld.
- Using: $mysqld
- --no-log Print to stdout instead of the log file. By default the log
- file is turned on.
- --password=... Password for user for mysqladmin.
- --tcp-ip Connect to the MySQL server(s) via the TCP/IP port instead
- of the UNIX socket. This affects stopping and reporting.
- If a socket file is missing, the server may still be
- running, but can be accessed only via the TCP/IP port.
- By default connecting is done via the UNIX socket.
- --user=... MySQL user for mysqladmin. Using: $opt_user
- --version Print the version number and exit.
- EOF
- exit(0);
- }