Linux下Mysql互为主从 - 数据库编程

系统环境：CentOS 6.5
master1：192.168.100.204
master2：192.168.100.205
mysql版本：mysql-5.6.19
注：mysql的5.5以下的版本和5.5以上的版本配置方法不一样

以下两个节点安装
1：防火墙打开相应端口
# /sbin/iptables -I INPUT -p tcp --dport 3306 -j ACCEPT
# /etc/rc.d/init.d/iptables save

2：安装相关依赖包
# yum -y install gcc gcc-c++ ncurses ncurses-devel openssl openssl-devel cmake perl lsof bison

3：删除自带的mysql
# rpm -qa|grep mysql
# rpm -e --allmatches --nodeps mysql-libs-5.1.71-1.el6.x86_64

4：创建相关目录
# mkdir /doiido/soft
# mkdir -p /doiido/mysql/data/

5：创建mysql用户
# /usr/sbin/groupadd mysql
# /usr/sbin/useradd -s /sbin/nologin -M -g mysql mysql
# chown -R mysql:mysql /doiido/mysql/

6：安装mysql
# cd /doiido/soft
# tar -zxvf mysql-5.6.19.tar.gz
# cd mysql-5.6.19
# cmake -DCMAKE_INSTALL_PREFIX=/doiido/server/mysql -DMYSQL_DATADIR=/doiido/mysql/data -DWITH_INNOBASE_STORAGE_ENGINE=1 -DWITH_MEMORY_STORAGE_ENGINE=1 -DWITH_MYISAM_STORAGE_ENGINE=1 -DSYSCONFDIR=/etc/ -DWITH_SSL=yes -DDEFAULT_CHARSET=utf8 -DDEFAULT_COLLATION=utf8_general_ci -DWITH_READLINE=on
# make && make install

7：修改相关目录权限并创建软连接
# chmod +w /doiido/server/mysql
# chown -R mysql:mysql /doiido/server/mysql/
# ln -s /doiido/server/mysql/lib/lib* /usr/lib/
# ln -s /doiido/server/mysql/bin/mysql /usr/bin

8：修改配置文件
# cp /doiido/server/mysql/support-files/my-default.cnf /etc/my.cnf

# vi /etc/my.cnf

[mysqld]
character-set-server = utf8
default-storage-engine = MyISAM
basedir = /doiido/server/mysql
datadir = /doiido/mysql/data
log-error = /doiido/mysql/mysql_error.log
pid-file = /doiido/mysql/mysql.pid
max_allowed_packet = 32M
explicit_defaults_for_timestamp = true

9：安装mysql 数据库
# /doiido/server/ mysql/scripts/mysql_install_db --basedir=/doiido/server/mysql --datadir=/doiido/mysql/data --user=mysql

10：设置mysql开机自动启动服务
# cp /doiido/server/mysql/support-files/mysql.server /etc/init.d/mysqld
# chkconfig --add mysqld
# chkconfig --level 345 mysqld on

11：修改mysqld文件并启动mysql
# vi /etc/init.d/mysqld

#修改mysqld文件中的下面两项
basedir=/doiido/server/mysql
datadir=/doiido/mysql/data

# service mysqld start

12：创建需同步的数据库
# mysql -uroot -p
mysql> create database doiido;
mysql> GRANT ALL PRIVILEGES ON doiido.* TO doiido@"%" IDENTIFIED BY 'doiido123';
mysql> exit
--------------------以下在服务器master1上操作
修改配置文件
# vi /etc/my.cnf

[mysqld]
#默认是1，master和slave不能相同即可
server-id=1
log-bin=bin.log
port=3306
binlog-do-db =doiido
#要复制的数据库
replicate-do-db =doiido

重启mysql
# service mysqld restart

建立用于同步的账户
# mysql -uroot -p
mysql> grant replication slave on *.* to 'dodo'@'192.168.100.205' identified by 'jjjjjj';

查看File对应值，并记录下来
mysql> show master status;

+------------------+----------+--------------+------------------+-------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| bin.000001       |      120 | doiido       |                  |                   |
+------------------+----------+--------------+------------------+-------------------+

mysql> exit
--------------------以下在服务器master2上操作
2.修改slave上的配置文件my.cnf
# vi /etc/my.cnf

[mysqld]
server-id=2
port=3306
log-bin=bin.log
binlog-do-db =doiido
replicate-do-db =doiido

重启mysql
# service mysqld restart

在从服务器上建立相应的数据库
# mysql -uroo

Linux下Mysql互为主从(一)