Mysql的主从复制和级联(一)

[root@proxy1 ~]# mysql
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1959
Server version: 5.5.31-log Source distribution

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mysql> create database db_kenyon;
Query OK, 1 row affected (0.03 sec)

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

mysql> use db_kenyon;
Database changed
mysql> create table t_kenyon(id int);
Query OK, 0 rows affected (0.07 sec)

mysql> insert into t_kenyon values(1),(2),(3);
Query OK, 3 rows affected (0.01 sec)
Records: 3  Duplicates: 0  Warnings: 0

mysql> select * from t_kenyon;
+------+
| id   |
+------+
|    1 |
|    2 |
|    3 |
+------+
3 rows in set (0.00 sec)

mysql> show master status;
Empty set (0.00 sec)
[root@localhost ~]#
2.修改配置/etc/my.cnf
[mysqld]
log-bin=mysql-bin
server-id    =1 
binlog-do-db=db_kenyon
innodb_data_home_dir = /usr/local/mysql/data/
innodb_log_group_home_dir = /usr/local/mysql/data/
innodb_buffer_pool_size = 256M
innodb_additional_mem_pool_size = 20M
innodb_log_file_size = 64M
innodb_log_buffer_size = 8M
innodb_flush_log_at_trx_commit = 1
innodb_lock_wait_timeout = 50
3.创建slave端连到master端的用户,重启master
[root@localhost ~]# /etc/init.d/mysqld restart
Shutting down MySQL.. SUCCESS! 
Starting MySQL............ SUCCESS!
[root@localhost ~]# mysql
mysql>





grant replication slave on *.* to repl@'192.25.10.73' identified by '123456';
mysql> flush privileges;
[root@localhost ~]#
4.备份master端数据,并拷贝至slave端
mysql> flush tables with read lock;
Query OK, 0 rows affected (0.00 sec)

mysql>  show master status;
+------------------+----------+---------------+--------------------------------------------------+-------------------+
| File             | Position | Binlog_Do_DB  | Binlog_Ignore_DB                                 | Executed_Gtid_Set |
+------------------+----------+---------------+--------------------------------------------------+-------------------+
| mysql-bin.000002 |      120 | db_kenyon |  |                   |
+------------------+----------+---------------+--------------------------------------------------+-------------------+
1 row in set (0.00 sec)
mysql> 

另外一个session:
[root@localhost log]# cd /usr/local/mysql/data
[root@localhost data]# tar -zcvf backup.tar.gz db_kenyon
[root@localhost ]# scp backup.tar.gz root@192.25.10.73:/usr/local/mysql/data/ 

--回到之前的session,从机搭完以后解锁，保证数据一致
mysql> unlock tables;
Query OK, 0 rows affected (0.00 sec)
5.修改slave端的数据
[mysqld]
server-id  = 2
master-host     =   192.25.10.71   #5.5以上废弃
master-user     =   repl            #5.5以上废弃
master-password =   123456           #5.5以上废弃
master-port     =   3306                  #5.5以上废弃
master-connect-retry=60           #重试时间60秒, #5.5以上废弃
replicat