匿名通过本文主要向大家介绍了Mysql ，GTID，Mha等相关知识,希望本文的分享对您有所帮助
下面小编就为大家带来一篇Mysql GTID Mha配置方法。小编觉的挺不错的，现在就分享给大家，也给大家做个参考。一起跟随小编过来看看吧
Gtid + Mha +Binlog server配置：
1：测试环境
OS：CentOS 6.5
Mysql：5.6.28
Mha：0.56
192.168.1.21 mysql1 M1
192.168.1.22 mysql2 S1
192.168.1.23 mysql3 S2 Mha manage、Binlog server
2：配置/etc/my.cnf相关参数,在3各节点中分别配置
binlog-format=ROW log-slave-updates=true gtid-mode=on enforce-gtid-consistency=true master-info-repository=TABLE relay-log-info-repository=TABLE sync-master-info=1 slave-parallel-workers=2 binlog-checksum=CRC32 master-verify-checksum=1 slave-sql-verify-checksum=1 binlog-rows-query-log_events=1
设置root密码，创建复制用户：
mysql> use mysql;
mysql> GRANT ALL PRIVILEGES ON *.* TO root@"%" IDENTIFIED BY "oracle123";
mysql> update user set Password = password('oracle123') where User='root';
mysql> flush privileges;
mysql> GRANT replication slave ON *.* TO 'repl'@'%' identified by 'oracle';
mysql> flush privileges;3：在mysql2、mysql3配置Gtid复制
CHANGE MASTER TO
MASTER_HOST = '192.168.1.21',
MASTER_PORT = 3306,
MASTER_USER = 'repl',
MASTER_PASSWORD = 'oracle',
MASTER_AUTO_POSITION = 1;
start slave;
mysql> show slave status\G
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.21
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000003
Read_Master_Log_Pos: 524
Relay_Log_File: mysql-relay-bin.000002
Relay_Log_Pos: 734
Relay_Master_Log_File: mysql-bin.000003
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
......
Master_SSL_Crlpath:
Retrieved_Gtid_Set: 9ee7c7af-cbf3-11e5-bf75-000c2923e459:1-2
Executed_Gtid_Set: 9ee7c7af-cbf3-11e5-bf75-000c2923e459:1-2
Auto_Position: 1
1 row in set (0.00 sec)4：安装Mha
rpm -Uvh epel-release-6-8.noarch.rpm
配置SSH等效：
在所有节点都执行
ssh-keygen -t rsa ssh-copy-id -i /root/.ssh/id_rsa.pub root@mysql1 ssh-copy-id -i /root/.ssh/id_rsa.pub root@mysql2 ssh-copy-id -i /root/.ssh/id_rsa.pub root@mysql3
测试ssh登录，在3各节点分别测试：
ssh myqsl1 ssh myqsl2 ssh myqsl3
binlog server配置：在mysql3
mkdir -p /mysql/backup/binlog /usr/local/mysql/bin/mysqlbinlog -R --raw --host=192.168.1.20 --user='root' --password='oracle123' --stop-never mysql- bin.000003 &
最后那个binlog文件时给定从那个binlog文件开始。另外需要注意，当mysql1上的mysql进程退出后，binlog server也会退出。
需要安装一些包做支持，使用yum网络源；如安装遇到问题可以尝试yum update更新yum源或yum clean all清除缓存
在每个节点安装 mha4mysql-node
yum -y install perl-DBD-MySQL ncftp
rpm -Uvh mha4mysql-node-0.56-0.el6.noarch.rpm
在mysql3上安装mha-manager
yum install perl yum install cpan yum install perl-Config-Tiny yum install perl-Time-HiRes yum install perl-Log-Dispatch yum install perl-Parallel-ForkManager
如果安装perl-Log-Dispatch，perl-Parallel-ForkManager安装包报错：
需要先安装epel
rpm -Uvh mha4mysql-manager-0.56-0.el6.noarch.rpm
5：配置Mha,在mysql3
mkdir -p /etc/masterha/app1
vi /etc/masterha/app1.cnf
[server default]
user=root
password=oracle123
manager_workdir=/etc/masterha/app1
manager_log=/etc/masterha/app1/manager.log
remote_workdir=/etc/masterha/app1
ssh_user=root
repl_user=repluser
repl_password=oracle
ping_interval=3
master_ip_failover_script=/etc/masterha/app1/master_ip_failover
[server1]
hostname=192.168.1.21
#ssh_port=9999
master_binlog_dir=/mysql/logs
check_repl_delay=0 #防止master故障时候，切换时slave有延迟，可在那里切不过来
candidate_master=1
[server2]
hostname=192.168.1.22
#ssh_port=9999
master_binlog_dir=/mysql/logs
candidate_master=1
[server3]
hostname=192.168.1.23
#ssh_port=9999
master_binlog_dir=/mysql/logs
no_master=1
ignore_fail=1 #如果这个节点挂了，mha将不可用，加上这个参数slave挂了一样可以用
[binlog1] #binlog server需要mysqlbinlog命令
hostname=192.168.1.23
master_binlog_dir=/mysql/backup/binlog #读取binlog存放位置
ignore_fail=1
no_master=1
vi /etc/masterha/app1/master_ip_failover
#!/usr/bin/env perl
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 = '192.168.1.20';#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;
}
elsif ( $command eq "start" ) {
# all arguments are passed.
# 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 {
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";
}
chmod 777 /etc/masterh