MYSQL MHA部署實錄
[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
MYSQL MHA部署實錄