MHA实施

10.20.30.102 my02 bak01

10.20.30.103 my03 mhamanager

set global read_only=1;

manager_log=/mha/app1/app1.log                                                   

manager_workdir=/mha/app1/                                                         

master_binlog_dir=/data/mysql/mysql3306/logs                    

master_ip_failover_script=/mha/master_ip_failover             

master_ip_online_change_script=/mha/master_ip_failover     

report_script=/mha/sendEmail                                                    

remote_workdir=/mha/tmp                                                   

ping_interval=5                                                                  

user=mhauser                                                                    

password=mhapass    

repl_user=repl                                                        

repl_password=repl4slave                                                                                           

ssh_port=22                                                                     

ssh_user=root                                                                  

secondary_check_script=masterha_secondary_check -s 10.20.30.102 -s 10.20.30.103

[server1]

hostname=10.20.30.101

port=3306

candidate_master=1

[server2]

hostname=10.20.30.102

port=3306

candidate_master=1                                                                             

[server3]

hostname=10.20.30.103

port=3306

. /etc/profile

. ~/.bash_profile

. ~/.bashrc

run_num=$(ps -ef|grep masterha_manager |grep -v grep|wc -l)

pid_file='/mha/app1/app1.master_status.health'

start() {

   if [[ $run_num < 1 ]];then

   args="--conf=/mha/app1.cnf --remove_dead_master_conf --ignore_last_failover"

   nohup masterha_manager $args < /dev/null > /mha/app1/app1.log 2>&1 &

   else

     echo 'mha is already running...'

   fi

}

stop() {

  if [[ $run_num < 1 ]];then

     echo 'mha not running ...'

     exit 64

  else

     ps -ef|grep masterha_manager |grep -v grep|awk '{print $2}'|xargs kill -9

     rm -f $pid_file

     echo 'mha stop...'

  fi

}

status() {

masterha_check_status --conf=/mha/app1.cnf

}

case "$1" in

  start)

  start

  ;;

  stop)

  stop

  ;;

  status)

  status

  ;;

  *)

  echo 'mhaCmd {stop|start|status}'

  ;;

esac

use strict;

use warnings FATAL => 'all';

use Getopt::Long;

my (

    $command,          $ssh_user,        $orig_master_host, $orig_master_ip,

    $orig_master_port, $new_master_host, $new_master_ip,    $new_master_port

);

my $vip = '10.20.30.110/24';                  # Virtual IP

my $key = "1";

my $ssh_start_vip = "/sbin/ifconfig eth0:$key $vip";

my $ssh_stop_vip = "/sbin/ifconfig eth0:$key down";

my $exit_code = 0;

GetOptions(

    'command=s'          => \$command,

    'ssh_user=s'         => \$ssh_user,

    'orig_master_host=s' => \$orig_master_host,

    'orig_master_ip=s'   => \$orig_master_ip,

    'orig_master_port=i' => \$orig_master_port,

    'new_master_host=s'  => \$new_master_host,

    'new_master_ip=s'    => \$new_master_ip,

    'new_master_port=i'  => \$new_master_port,

);

exit &main();

sub main {

    print "\n\nIN SCRIPT TEST====$ssh_stop_vip==$ssh_start_vip===\n\n";

    if ( $command eq "stop" || $command eq "stopssh" ) {

        my $exit_code = 1;

        eval {

            print "Disabling the VIP on old master: $orig_master_host \n";

            &stop_vip();

            $exit_code = 0;

        };

        if ($@) {

            warn "Got Error: $@\n";

            exit $exit_code;

        }

        exit $exit_code;

    }

    elsif ( $command eq "start" ) {

        my $exit_code = 10;

        eval {

            print "Enabling the VIP - $vip on the new master - $new_master_host \n";

            &start_vip();

            $exit_code = 0;

        };

        if ($@) {

            warn $@;

            exit $exit_code;

        }

        exit $exit_code;

    }

    elsif ( $command eq "status" ) {

        print "Checking the Status of the script.. OK \n";

        exit 0;

    }

    else {

        &usage();

        exit 1;

    }

}

sub start_vip() {

    `ssh $ssh_user\@$new_master_host \" $ssh_start_vip \"`;

}

sub stop_vip() {

     return 0  unless  ($ssh_user);

    `ssh $ssh_user\@$orig_master_host \" $ssh_stop_vip \"`;

}

sub usage {

    print

    "Usage: master_ip_failover --command=start|stop|stopssh|status --orig_master_host=host --orig_master_ip=ip --orig_master_port=port --new_master_host=host --new_master_ip=ip --new_master_port=port\n";

}

#  Copyright (C) 2011 DeNA Co.,Ltd.

#

#  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; either version 2 of the License, or

#  (at your option) any later version.

#

#  This program is distributed in the hope that it will be useful,

#  but WITHOUT ANY WARRANTY; without even the implied warranty of

#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

#  GNU General Public License for more details.

#

#  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.,

#  51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

## Note: This is a sample script and is not complete. Modify the script based on your environment.

use strict;

use warnings FATAL => 'all';

use Mail::Sender;

use Getopt::Long;

#new_master_host and new_slave_hosts are set only when recovering master succeeded

my ( $dead_master_host, $new_master_host, $new_slave_hosts, $subject, $body );

my $smtp='smtp.163.com';

my $mail_from='xxx@163.com';

my $mail_user='xxx@163.com';

my $mail_pass='xxxxxx';

my $mail_to=['xxx@xxx.cn','xxxxx@xxx.cn'];

GetOptions(

  'orig_master_host=s' => \$dead_master_host,

  'new_master_host=s'  => \$new_master_host,

  'new_slave_hosts=s'  => \$new_slave_hosts,

  'subject=s'          => \$subject,

  'body=s'             => \$body,

);

mailToContacts($smtp,$mail_from,$mail_user,$mail_pass,$mail_to,$subject,$body);

sub mailToContacts {

    my ( $smtp, $mail_from, $user, $passwd, $mail_to, $subject, $msg ) = @_;

    open my $DEBUG, "> /tmp/monitormail.log"

        or die "Can't open the debug      file:$!\n";

    my $sender = new Mail::Sender {

        ctype       => 'text/plain; charset=utf-8',

        encoding    => 'utf-8',

        smtp        => $smtp,

        from        => $mail_from,

        auth        => 'LOGIN',

        TLS_allowed => '0',

        authid      => $user,

        authpwd     => $passwd,

        to          => $mail_to,

        subject     => $subject,

        debug       => $DEBUG

    };

    $sender->MailMsg(

        {   msg   => $msg,

            debug => $DEBUG

        }

    ) or print $Mail::Sender::Error;

    return 1;

}

# Do whatever you want here

exit 0;