以前的文章有写过mysql的配置、MySQL数据库的多实例，此次配置mysql的主从同步：
一、主库开启BINLOG、server-id
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[root@Master-Mysql ~]# grep -E "server-id|log-bin" /etc/my.cnf log-bin = /usr/local/mysql/data/mysql-bin server-id = 1 mysql> show variables like '%log_bin%'; +---------------------------------+---------------------------------------+ | Variable_name | Value | +---------------------------------+---------------------------------------+ | log_bin | ON | | log_bin_basename | /usr/local/mysql/data/mysql-bin | | log_bin_index | /usr/local/mysql/data/mysql-bin.index | | log_bin_trust_function_creators | OFF | | log_bin_use_v1_row_events | OFF | | sql_log_bin | ON | +---------------------------------+---------------------------------------+ 6 rows in set (0.01 sec) mysql> show variables like '%server_id%'; +----------------+-------+ | Variable_name | Value | +----------------+-------+ | server_id | 1 | | server_id_bits | 32 | +----------------+-------+ 2 rows in set (0.00 sec) |
备注：以上两个信息必须在[mysqld]模块下！！！文 章 源 自 note.t4x.orgByrd's Blog-https://note.t4x.org/database/configuration-mysql-master-slave/
二、给从库授权
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mysql> grant replication slave on *.* to byrd@'192.168.199.%' identified by 'admin'; mysql> flush privileges; mysql> select user,host from mysql.user; +------+---------------+ | user | host | +------+---------------+ | root | 127.0.0.1 | | byrd | 192.168.199.% | | root | ::1 | | root | lamp | | root | localhost | +------+---------------+ 5 rows in set (0.00 sec) |
锁表前建立点数据：
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mysql> create database hitest; mysql> show databases; +--------------------+ | Database | +--------------------+ | hitest | +--------------------+ 6 rows in set (0.00 sec) mysql> use hitest; mysql> create table test( -> id int(4) not null primary key auto_increment, -> name char(20) not null -> ); Query OK, 0 rows affected (1.80 sec) mysql> show tables ; +------------------+ | Tables_in_hitest | +------------------+ | test | +------------------+ mysql> insert into test(id,name) values(1,'zy'); mysql> select * from test; +----+------+ | id | name | +----+------+ | 1 | zy | +----+------+ |
三、锁表、备份、解锁
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mysql> flush table with read lock; #锁表 mysql> show variables like '%timeout%'; #锁表时间 +-----------------------------+----------+ | Variable_name | Value | +-----------------------------+----------+ | interactive_timeout | 28800 | | wait_timeout | 28800 | +-----------------------------+----------+ 12 rows in set (0.06 sec) mysql> show master status; #binlog日志位置 +------------------+----------+--------------+------------------+-------------------+ | File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set | +------------------+----------+--------------+------------------+-------------------+ | mysql-bin.000004 | 1305 | | | | +------------------+----------+--------------+------------------+-------------------+ 1 row in set (0.03 sec) [root@Master-Mysql ~]# /usr/local/mysql/bin/mysqldump -uroot -p'' -B -A |gzip >/tmp/all.sql.gz #新窗口备份 Enter password: mysql> unlock table; #解锁 ###############解锁后主库操作如下：############### mysql> use hitest mysql> insert into test(id,name) values(2,'binghe'); mysql> select * from test; +----+--------+ | id | name | +----+--------+ | 1 | zy | | 2 | binghe | +----+--------+ mysql> create database hxy; ###############解锁后主库操作完成~############### |
备注：备份数据需要重新打开新窗口，不然锁表就自动失效；文 章 源 自 note.t4x.orgByrd's Blog-https://note.t4x.org/database/configuration-mysql-master-slave/
四、主库导入到从库
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################主库操作################ [root@Master-Mysql tmp]# ll -rw-r--r--. 1 root root 162236 Jul 8 21:30 all.sql.gz [root@Master-Mysql tmp]# gzip -d all.sql.gz [root@Master-Mysql tmp]# ll -rw-r--r--. 1 root root 590351 Jul 8 21:30 all.sql ################主库完成################ ##备注：将主库导出的all.sql通过scp、ssh、sftp等方式拷贝到从库服务器，此处略## [root@Slave-Mysql ~]# grep log-bin /etc/my.cnf #log-bin = /usr/local/mysql/data/mysql-bin [root@Slave-Mysql ~]# grep server-id /etc/my.cnf server-id = 2 [root@Slave-Mysql ~]# /etc/init.d/mysqld restart [root@Slave-Mysql tmp]# /usr/local/mysql/bin/mysql -uroot -p'admin' </tmp/all.sql Warning: Using a password on the command line interface can be insecure. [root@Slave-Mysql tmp]# /usr/local/mysql/bin/mysql -uroot -p'admin' mysql> use hitest; mysql> select * from test; +----+------+ | id | name | +----+------+ | 1 | zy | +----+------+ 1 row in set (0.00 sec) |
五、从库配置信息
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mysql> CHANGE MASTER TO -> MASTER_HOST='192.168.199.177', -> MASTER_PORT=3306, -> MASTER_USER='byrd', -> MASTER_PASSWORD='admin', -> MASTER_LOG_FILE='mysql-bin.000004', -> MASTER_LOG_POS=1305; Query OK, 0 rows affected, 2 warnings (1.96 sec) [root@Slave-Mysql ~]# ll /usr/local/mysql/data/master.info ##备注：master.info记录MASTER的相关信息！ |
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cat |/usr/local/mysql5/bin/mysql -usystem -p'admin123' -S /data/3308/mysql.sock <<EOF CHANGE MASTER TO MASTER_HOST='192.168.199.177', MASTER_PORT=3306, MASTER_USER='byrd', MASTER_PASSWORD='admin', MASTER_LOG_FILE='mysql-bin.000004', MASTER_LOG_POS=1305; EOF |
六、启动从库同步
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mysql> start slave; mysql> show slave status\G Slave_IO_Running: Yes Slave_SQL_Running: Yes Seconds_Behind_Master: 0 |
七、结果测试
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mysql> use hitest; mysql> select * from test; +----+--------+ | id | name | +----+--------+ | 1 | zy | | 2 | binghe | +----+--------+ 2 rows in set (0.00 sec) [root@Master-Mysql ~]# /usr/local/mysql/bin/mysql -uroot -p'' -e "create database zhihu;" #主库建立了一个zhihu的数据库 Enter password: [root@Slave-Mysql ~]# /usr/local/mysql/bin/mysql -uroot -p'' -e "show databases like 'zhihu'"; Enter password: +------------------+ | Database (zhihu) | +------------------+ | zhihu | +------------------+ |
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mysql> grant replication slave on web.* to rep@'1.1.1.11' identified by 'admin'; ERROR 1221 (HY000): Incorrect usage of DB GRANT and GLOBAL PRIVILEGES 不允许这样操作，可以在my.cnf中使用参数跳过不需要同步的库 |
八、状态查询
主库：
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mysql> show processlist\G *************************** 1. row *************************** Id: 135 User: byrd Host: 103.11.11.11:41910 db: NULL Command: Binlog Dump Time: 671052 State: Master has sent all binlog to slave; waiting for binlog to be updated Info: NULL *************************** 2. row *************************** Id: 21664 User: byrd Host: 12.12.12.12:59274 db: NULL Command: Binlog Dump Time: 414 State: Master has sent all binlog to slave; waiting for binlog to be updated Info: NULL *************************** 3. row *************************** Id: 21665 User: root Host: localhost db: NULL Command: Query Time: 0 State: init Info: show processlist 3 rows in set (0.00 sec) |
从库：
[crayon-696d1dc9b9dbc367960611/]
申明：本文由BYRD原创(基于Mysql5.6.16)，未经许可禁止转载！
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