mysql5.6下主主复制的配置实现

两台虚拟机192.168.183.131和192.168.183.132,装完系统之后直接把所有开发包都装上
下载软件包mysql-5.6.10.tar.gz，cmake-2.8.10.2.tar.gz（从5.5开始mysql使用cmake来进行编译了而不是之前的configure）

mysql的编译安装

1.首先安装cmake

[root@localhost ~]# tar -xvf cmake-2.8.10.2.tar.gz
[root@localhost ~]# cd cmake-2.8.10.2
[root@localhost cmake-2.8.10.2]# ./configure
[root@localhost cmake-2.8.10.2]# make;make install

2.安装mysql
1）创建mysql用户和组

[root@localhost ~]# groupadd mysql
[root@localhost ~]# useradd -g mysql mysql
[root@localhost ~]# mkdir /usr/local/mysql
[root@localhost ~]# chown -R mysql.mysql /usr/local/mysql

2）解压缩mysql，进行编译安装

[root@localhost ~]# tar -xvf mysql-5.6.10.tar.gz
[root@localhost ~]# cd mysql-5.6.10
[root@localhost ~]# cmake \
-DCMAKE_INSTALL_PREFIX=/usr/local/mysql \
-DMYSQL_DATADIR=/user/local/mysql/data \
-DSYSCONFDIR=/etc \
-DEXTRA_CHARSETS=all \
-DDEFAULT_CHARSET=utf8 \
-DDEFAULT_COLLATION=utf8_general_ci \
-DWITH_INNOBASE_STORAGE_ENGINE=1 \
-DWITH_ARCHIVE_STORAGE_ENGINE=1 \
-DWITH_BLACKHOLE_STORAGE_ENGINE=1  \
-DWITH_FEDERATED_STORAGE_ENGINE=1 \
-DWITH_PARTITION_STORAGE_ENGINE=1 \
-DWITH_PERFSCHEMA_STORAGE_ENGINE=1 \
-DMYSQL_UNIX_ADDR=/var/run/mysqld/mysqld.sock  \
-DMYSQL_TCP_PORT=3306 \
-DWITH_DEBUG=0 \
-DENABLED_LOCAL_INFILE=1
[root@localhost ~]# make;make install
[root@localhost ~]# cd /usr/local/mysql/
[root@localhost mysql]# chown -R root.mysql *
[root@localhost mysql]# chown -R mysql.mysql data/

3）创建主配置文件和启动脚本

[root@localhost data]# cp /usr/local/mysql/support-files/my-default.cnf /etc/my.cnf
[root@localhost ~]# vi /etc/my.cnf
basedir = /usr/local/mysql
datadir = /usr/local/mysql/data
port = 3306
server_id = 131
socket = /var/run/mysqld/mysqld.sock
user = mysql
log-error = /var/log/mysqld.log
[root@localhost ~]# cp /usr/local/mysql/support-files/mysql.server /etc/init.d/mysqld
[root@localhost data]# vi /etc/init.d/mysqld
basedir=/usr/local/mysql
datadir=/usr/local/mysql/data
mysqld_pid_file_path=/var/run/mysqld/mysqld.pid

4）把mysql的相关文件录入系统
配置mysql命令的搜索路径
打开/etc/profile文件找到export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE INPUTRC在这句之前添加export PATH=$PATH:/usr/local/mysql/bin 就会对所有用户有效并且开机自动生效了

告知系统mysql库文件的存放位置 
编辑/etc/ld.so.conf.d/mysql.conf 添加/usr/local/mysql/lib
ldconfig -v |grep mysql 
ldconfig会按照系统库文件的搜索路径把系统中所有的库文件重新加载一遍

告知系统mysql头文件的位置 
ln -sv /usr/local/mysql/include /usr/include/mysql

配置mysql的man手册页 
vi /etc/man.config添加 MANPATH=/usr/local/mysql/man

5）初始化数据库并且启动

[root@localhost scripts]# pwd
/usr/local/mysql/scripts
[root@localhost scripts]# mysql_install_db --basedir=/usr/local/mysql --datadir=/usr/local/mysql/data --user=mysql
[root@localhost ~]# chkconfig --add mysqld
[root@localhost ~]# service mysqld start

6）配置第二台mysql，直接复制过去

[root@localhost ~]# scp -r /etc/my.cnf 192.168.183.132:/etc
[root@localhost ~]# scp -r /etc/init.d/mysqld 192.168.183.132:/etc/init.d
[root@localhost ~]# scp -r /usr/local/mysql 192.168.183.132:/usr/local
[root@localhost ~]# scp -r /etc/ld.so.conf.d/mysql.conf 192.168.183.132:/etc/ld.so.conf.d/
[root@localhost ~]# groupadd mysql
[root@localhost ~]# useradd -g mysql mysql
[root@localhost ~]# chown -R mysql.mysql /usr/local/mysql
[root@localhost ~]# cd /usr/local/mysql
[root@localhost ~]# chown -R root.mysql *
[root@localhost ~]# chown -R mysql.mysql data/

在132上面把/etc/my.cnf配置文件中的server-id改成132，然后重复进行第四部

主从复制的配置

1.把131配置成主库，把132配置成从库
1）在131上面打开二进制日志

 

修改配置文件/etc/my.cnf，添加log-bin = mylog.000001

重启mysql

 

2）然后建一个用户，授权可以读取自己的二进制日志

mysql> grant replication slave on *.* to slave@'192.168.183.132' identified by 'mapabc';
Query OK, 0 rows affected (0.01 sec)
mysql> flush privileges;
Query OK, 0 rows affected (0.00 sec)

3）从库上面登录测试

[root@localhost ~]# mysql -u slave -p -h 192.168.183.131
Enter password:
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| test               |
+--------------------+
2 rows in set (0.00 sec)

4）主库上面查看当前的POS号

mysql> show master status;
+--------------+----------+--------------+------------------+-------------------+
| File         | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+--------------+----------+--------------+------------------+-------------------+
| mylog.000001 |      412 |              |                  |                   |
+--------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

5）在从库上面配置

mysql> CHANGE MASTER TO
    -> MASTER_HOST='192.168.183.131',
    -> MASTER_USER='slave',
    -> MASTER_PASSWORD='mapabc',
    -> MASTER_LOG_FILE='mysql.000001',
    -> MASTER_LOG_POS=412;
Query OK, 0 rows affected, 2 warnings (0.08 sec)

6）查看从库状态并启动从库

mysql> show slave status\G;
*************************** 1. row ***************************
               Slave_IO_State:
                  Master_Host: 192.168.183.131
                  Master_User: slave
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mysql.000001
          Read_Master_Log_Pos: 412
               Relay_Log_File: mysqld-relay-bin.000001
                Relay_Log_Pos: 4
        Relay_Master_Log_File: mysql.000001
             Slave_IO_Running: No
            Slave_SQL_Running: No
mysql> start slave;
mysql> show slave status\G;
*************************** 1. row ***************************
               Slave_IO_State: Waiting for master to send event
                  Master_Host: 192.168.183.131
                  Master_User: slave
                  Master_Port: 3306
                Connect_Retry: 60
              Master_Log_File: mylog.000001
          Read_Master_Log_Pos: 412
               Relay_Log_File: relay-bin.000002
                Relay_Log_Pos: 279
        Relay_Master_Log_File: mylog.000001
             Slave_IO_Running: Yes
            Slave_SQL_Running: Yes

7）测试
主库131创建数据库

mysql> create database db5;
Query OK, 1 row affected (0.00 sec)

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| db5                |
| mysql              |
| performance_schema |
| test               |
+--------------------+
5 rows in set (0.00 sec)

从库上面查看

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| db5                |
| mysql              |
| performance_schema |
| test               |
+--------------------+
5 rows in set (0.01 sec)

已经同步过来了。

把132配置成主库，把131配置成132的从库
1）对于主从复制来说，主库可以接受读写，从库只能读不能写，一旦从库有写入操作，造成主从库数据不一致，复制立马就断开了，我们就在131上面建立一个授权帐号让它同步到132上面

mysql> grant replication slave on *.* to slave@'192.168.183.131' identified by 'mapabc';
Query OK, 0 rows affected (0.00 sec)

2）打开132的二进制日志，把132配置成主库，然后重启132的mysql

3）在131上面配置

mysql> CHANGE MASTER TO
    -> MASTER_HOST='192.168.183.132',
    -> MASTER_USER='slave',
    -> MASTER_PASSWORD='mapabc',
    -> MASTER_LOG_FILE='mylog.000001',
    -> MASTER_LOG_POS=120;
Query OK, 0 rows affected, 2 warnings (0.12 sec)
mysql> start slave;
Query OK, 0 rows affected (0.01 sec)

4）测试
在132上面创建数据库

mysql> create database db4;
Query OK, 1 row affected (0.01 sec)

在131上面查看，看到已经同步过来了

mysql> show databases;
+--------------------+
| Database           |
+--------------------+
| information_schema |
| db4                |
| db5                |
| mysql              |
| performance_schema |
| test               |
+--------------------+
6 rows in set (0.00 sec)

至此，主主同步配置完成。