mysql主主同步

双主节点

node1:192.168.1.53

node2:192.168.1.54

主主同步

#yum install gcc gcc-c++ bison ncurses ncurses-devel

#useradd mysql -s /sbin/nologin

#tar -zxvf cmake-2.8.4.tar.gz

#./configure

#gmake && make install

#tar -zxvf mysql-5.5.14.tar.gz

#cmake ./

#make && make install

#mkdir -p /data/mysql/data

#mkdir -p /data/mysql/log/binlog

#chown mysql:mysql /data/mysql/ -R

#chown mysql:mysql /usr/local/mysql/ -R

#vim /etc/profile

export PATH=$PATH:/usr/local/mysql/bin

拷贝启动脚本

#cp mysql.server /etc/init.d/mysqld

#chmod +x /etc/init.d/mysqld

拷贝配置文件

#cp my-medium.cnf /etc/my.cnf

#vim /etc/my.cnf

配置文件大体内容,根据自己实际情况来改

[client]

port
= 3306

socket
=
/tmp/mysql.sock

[mysqld]

user = mysql

basedir = /usr/local/mysql

datadir = /data/mysql/data

log-error = /data/mysql/log/mysql_error.log

pid-file = /data/mysql/mysql.pid

port
= 3306

socket
=
/tmp/mysql.sock

skip-external-locking

key_buffer_size = 16M

max_allowed_packet = 1M

table_open_cache = 64

sort_buffer_size = 512K

net_buffer_length = 8K

read_buffer_size = 256K

read_rnd_buffer_size = 512K

myisam_sort_buffer_size = 8M

slow_query_log = ON

long_query_time = 2

slow_query_log_file = /data/mysql/log/slow.log

log-bin=/data/mysql/log/binlog/mysql-binlog

binlog_format=mixed

relay_log=/data/mysql/log/binlog/mysql-realy-binlog

server-id
=
1
//一定要不一样

skip-slave-start

replicate-wild-ignore-table=mysql.%

[mysqldump]

quick

max_allowed_packet = 16M

[mysql]

no-auto-rehash

[myisamchk]

key_buffer_size = 20M

sort_buffer_size = 20M

read_buffer = 2M

write_buffer = 2M

[mysqlhotcopy]

interactive-timeout

初始化数据库:

#./mysql_install_db --user=mysql --datadir=/data/mysql/data
--basedir=/usr/local/mysql

启动数据库

#/etc/init.d/mysqld start

设置数据库root密码

#/usr/local/mysql/bin/mysqladmin -u root password 123456

#mysql -u root -p 123456

node1:192.168.1.53

mysql> grant replication slave on *.* to
slaveuser@'192.168.1.54' identified by '123456';

mysql> flush privileges;

mysql> show master status;

记住这里的File 和Position

node2:192.168.1.54

mysql> change master to MASTER_HOST='192.168.1.53',
MASTER_USER='slaveuser', MASTER_PASSWORD='123456',
MASTER_LOG_FILE='mysql-binlog.000008', MASTER_LOG_POS=107;

//这里的mysql-binlog.000008和107分别为刚才的file 和Position的数据

查看是否同步成功:

mysql> show slave status\G;

这两项是yes,说明连接成功.

Slave_IO_Running: Yes

Slave_SQL_Running: Yes

因为要主主同步,所以还要将node1于node2同步,方法同上

node2:192.168.1.54

mysql> grant replication slave on *.* to
slaveuser@'192.168.1.53' identified by '123456';

mysql>show master status;

node1:192.168.1.53

mysql> change master to MASTER_HOST='192.168.1.54',
MASTER_USER='slaveuser', MASTER_PASSWORD='123456',
MASTER_LOG_FILE='mysql-binlog.000002', MASTER_LOG_POS=476;

查看是否连接陈功

mysql>show slave status\G;

因为在配置文件里设置了skip-slave-start,所以每次重启数据库,需要手动开启同步

mysql>slave start;

同理关闭命令

>slave stop;