king01 作为 master king02 与 king03 作为 king01 的 slave,king04 作为 mha_manager
- [root@king01 ~]# mkdir .ssh
- [root@king01 ~]# cd .ssh
- [root@king01 .ssh]# ssh-keygen -t dsa -P '' -f id_dsa
- [root@king01 .ssh]# cat id_dsa.pub >> authorized_keys
- [root@king02 ~]# mkdir .ssh
- [root@king02 ~]# cd .ssh
- [root@king02 .ssh]# ssh-keygen -t dsa -P '' -f id_dsa
- [root@king02 .ssh]# cat id_dsa.pub >> authorized_keys
- [root@king03 ~]# mkdir .ssh
- [root@king03 ~]# cd .ssh
- [root@king03 .ssh]# ssh-keygen -t dsa -P '' -f id_dsa
- [root@king03 .ssh]# cat id_dsa.pub >> authorized_keys
- [root@king04 ~]# mkdir .ssh
- [root@king04 ~]# cd .ssh
- [root@king04 .ssh]# ssh-keygen -t dsa -P '' -f id_dsa
- [root@king04 .ssh]# cat id_dsa.pub >> authorized_keys
- [root@king01 ~]# scp 192.168.1.202:/root/.ssh/id_dsa.pub ./id_dsa.pub.202
- [root@king01 ~]# scp 192.168.1.203:/root/.ssh/id_dsa.pub ./id_dsa.pub.203
- [root@king01 ~]# scp 192.168.1.204:/root/.ssh/id_dsa.pub ./id_dsa.pub.204
- [root@king01 ~]# cd .ssh
- [root@king01 .ssh]# cat id_dsa.pub.202 >> authorized_keys
- [root@king01 .ssh]# cat id_dsa.pub.203 >> authorized_keys
- [root@king01 .ssh]# cat id_dsa.pub.204 >> authorized_keys
- king01-king04
- yum install perl-DBD-MySQL perl-CPAN perl-Config-Tiny perl-Log-Dispatch perl-Time-HiRes perl-Parallel-ForkManager
- tar zxvf mha4mysql-node-0.56.tar.gz
- cd mha4mysql-node-0.56
- perl Makefile.PL
- make && make install
- king04
- tar zxvf mha4mysql-manager-0.56.tar.gz
- cd mha4mysql-manager-0.56
- perl Makefile.PL
- make && make install
- mkdir -p /etc/mha
- mkdir -p /usr/local/mha
- cp samples/conf/* /etc/mha
- cp samples/scripts/* /usr/local/bin
- cd /etc/mha/
- vim /etc/mha/mha.conf
- [server default]
- manager_workdir=/usr/local/mha
- manager_log=/usr/local/mha/manager.log
- user=root
- password=abcd.1234
- ssh_user=root
- repl_user=repl
- repl_password=repl
- ping_interval=1
- master_ip_failover_script=/usr/local/bin/master_ip_failover
- master_ip_online_change_script=/usr/local/bin/master_ip_online_change
- [server1]
- hostname=192.168.1.201
- ssh_port=22
- master_binlog_dir=/usr/local/mysql/data
- candidate_master=1
- port=3306
- [server2]
- hostname=192.168.1.302
- ssh_port=22
- master_binlog_dir=/usr/local/mysql/data
- candidate_master=1
- port=3306
- [server3]
- hostname=192.168.1.203
- ssh_port=22
- master_binlog_dir=/usr/local/mysql/data
- candidate_master=1
- port=3306
- [root@king04 ~]# vi /usr/local/bin/master_ip_failover
- #!/usr/bin/env perl
- # 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 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 = '192.168.1.200/24'; # Virtual IP
- my $gateway = '192.168.1.1'; #Gateway IP
- my $interface = 'eth0';
- my $key = "1";
- my $ssh_start_vip = "/sbin/ifconfig $interface:$key $vip;/sbin/arping -I $interface -c 3 -s $vip $gateway >/dev/null 2>&1";
- my $ssh_stop_vip = "/sbin/ifconfig $interface:$key down";
- 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" ) {
- # $orig_master_host, $orig_master_ip, $orig_master_port are passed.
- # If you manage master ip address at global catalog database,
- # invalidate orig_master_ip here.
- 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;
- }
- # If you manage master ip address at global catalog database,
- # activate new_master_ip here.
- # You can also grant write access (create user, set read_only=0, etc) here.
- 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";
- `ssh $ssh_user\@$orig_master_host \"$ssh_start_vip \"`;
- exit 0;
- }
- else {
- &usage();
- exit 1;
- }
- }
- # A simple system call that enable the VIP on the new master
- sub start_vip() {
- `ssh $ssh_user\@$new_master_host \"$ssh_start_vip \"`;
- }
- # A simple system call that disable the VIP on the old_master
- sub stop_vip() {
- `ssh $ssh_user\@$orig_master_host \"$ssh_stop_vip \"`;
- }
- sub usage {
- "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";
- }
- [root@king01 ~]# /sbin/ifconfig eth0:1 192.168.1.200/24
- [root@king04 ~]# /usr/local/bin/masterha_check_ssh --conf=/etc/mha/mha.conf
- [root@king04 ~]# /usr/local/bin/masterha_check_repl --conf=/etc/mha/mha.conf
- [root@king04 ~]# nohup /usr/local/bin/masterha_manager --conf=/etc/mha/mha.conf > /var/log/masterhamanager.log < /dev/null 2>&1 &
- [root@king04 ~]# /usr/local/bin/masterha_check_status --conf=/etc/mha/mha.conf
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