step by step配置mysql复制的具体方法

采用全库复制的方案，方便管理mysql 5.5 + rhel5.8
10.4.11.12 master
10.4.11.13 slave
---master端设置
1，    创建复制帐号，需要复制和slave权限
mysql> grant replication slave, replication client on *.*  to repl@'10.4.11.12 identified by 'mysql;
query ok, 0 rows affected (0.00 sec)
2，    修改参数，并重启生效
#skip-networking
server-id       = 12
# uncomment the following if you want to log updates
log-bin=mysql-bin
重启mysql
service mysql restart

---slave端的设置
3，slave库的参数设置，同样需要重启生效
vi /etc/my.cnf
#skip-networking
server-id       = 13
# uncomment the following if you want to log updates
log-bin=mysql-relay-bin

4，master导出数据到slave库
如果数据库使用的是myisam表类型的话，可按如下方式操作：

shell> mysqldump --all-databases --master-data=1 > data.sql
如果数据库使用的是innodb表类型的话，则应该使用single-transcation：

shell> mysqldump --all-databases --single-transaction --master-data=1 > data.sql

slave端导入数据
mysql < data.sql

 
5，查看master的配置
mysql> show master status;
+------------------+----------+--------------+------------------+
| file             | position | binlog_do_db | binlog_ignore_db |
+------------------+----------+--------------+------------------+
| mysql-bin.000001 |      107 |              |                  |
+------------------+----------+--------------+------------------+
1 row in set (0.00 sec)

6，启动复制，slave端运行如下命令

--配置复制的指向
change master to master_host='10.4.11.12',
 master_user='repl',
 master_password='mysql',
 master_log_file='mysql-bin.000001',
 master_log_pos=0;

--开始复制
mysql> start slave ;
query ok, 0 rows affected (0.00 sec)

7,查看复制的状态，注意slave_io_state, slave_io_running,和slave_sql_running三列的值

mysql> show slave status\g
*************************** 1. row ***************************
               slave_io_state: waiting for master to send event
                  master_host: 172.16.251.11
                  master_user: repl
                  master_port: 3306
                connect_retry: 60
              master_log_file: mysql-bin.000001
          read_master_log_pos: 1278
               relay_log_file: linux2-relay-bin.000002
                relay_log_pos: 503
        relay_master_log_file: mysql-bin.000001
             slave_io_running: yes
            slave_sql_running: yes
              replicate_do_db:
……..

8，测试复制情况
master端新建一个表
slave查看是否复制完成