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mysql主从复制基于binlog+position搭建

1.环境
 
 
----------------------------------------------------------|
 
 
|mysql版本  | 5.7.14                |  5.7.14              |
 
 
|----------|----------------------------------------------|
 
 
|ip        |192.168.26.233(master) | 192.168.26.75 (slave)|
 
 
|port      | 3306                  |       3306           |
 
 
|---------------------------------------------------------|
 

 
 

 
master端操作
 

 
1. 主库必备参数:
 

 
 
server-id=3306100
 
log-bin = /data/mysql/mysql_3306/logs/mysql-bin
 
binlog_format=row
 

 
 
可选: row
 

 
 
2. 获取position和binlog位置
 

 
 

 
 
mysql> show master status\G;
 
*************************** 1. row ***************************
 
             File: mysql-bin.000016
 
         Position: 154
 
     Binlog_Do_DB: 
 
 Binlog_Ignore_DB: 
 
Executed_Gtid_Set: 
 
1 row in set (0.00 sec)
 

 
 

 
 

 
 
3.创建复制账号
 

 
 
mysql> create user 'repl'@'192.168.26.%' identified by 'repl';
 
Query OK, 0 rows affected (0.01 sec)
 

 
 
mysql> grant replication slave on *.* to 'repl'@'192.168.26.%';
 
Query OK, 0 rows affected (0.00 sec)
 

 
 

 
 
mysql> select user,host from mysql.user;
 
+-----------+--------------+
 
| user      | host         |
 
+-----------+--------------+
 
| repl      | 192.168.26.% |
 
| admin     | localhost    |
 
| mysql.sys | localhost    |
 
| root      | localhost    |
 
+-----------+--------------+
 
4 rows in set (0.00 sec)
 

 
 

 
 

 
 
4.在slave机器上测试账号能不能登陆
 

 
 
[root@zw_test_26_75 ~]# mysql -h 192.168.26.233 -urepl -p
 
Enter password: 
 
Welcome to the MySQL monitor.  Commands end with ; or \g.
 
Your MySQL connection id is 11
 
Server version: 5.7.14-log MySQL Community Server (GPL)
 
Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
 
Oracle is a registered trademark of Oracle Corporation and/or its
 
affiliates. Other names may be trademarks of their respective
 
owners.
 

 
 
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
 
repl@192.168.26.233 [(none)]>
 

 
 
slave端操作
 

 
 
1. 从库必备参数:
 

 
server-id=3306101   (server-id不能重复) 
 
log-bin = /data/mysql/mysql_3306/logs/mysql-bin
 
log_slave_updates 
 

 
 
如果没加log_slave_updates 参数复制的时候  a->b->c不行的
 

 
 
2. 生成一个 change master to 语句,执行
 

 
 
repl@192.168.26.233 [(none)]>help change master to
 

 
 
root@localhost [(none)]>change master to master_host='192.168.26.233', master_port=3306, master_user='repl',master_password='repl',master_log_file='mysql-bin.000016',master_log_pos=154;
 
Query OK, 0 rows affected, 2 warnings (0.77 sec)
 

 
 

 
 
3.查看slve的状态
 

 
 
mysql> show slave status\G;
 
*************************** 1. row ***************************
 
               Slave_IO_State: 
 
                  Master_Host: 192.168.26.233
 
                  Master_User: repl
 
                  Master_Port: 3306
 
                Connect_Retry: 60
 
              Master_Log_File: mysql-bin.000016
 
          Read_Master_Log_Pos: 154
 
               Relay_Log_File: relay-bin.000001
 
                Relay_Log_Pos: 4
 
        Relay_Master_Log_File: mysql-bin.000016
 
   Slave_IO_Running: No  --正常应该是yes
 
            Slave_SQL_Running: No  --正常应该是yes
 
              Replicate_Do_DB: 
 
          Replicate_Ignore_DB: 
 
           Replicate_Do_Table: 
 
       Replicate_Ignore_Table: 
 
      Replicate_Wild_Do_Table: 
 
  Replicate_Wild_Ignore_Table: 
 
                   Last_Errno: 0
 
                   Last_Error: 
 
                 Skip_Counter: 0
 
          Exec_Master_Log_Pos: 154
 
              Relay_Log_Space: 154
 
              Until_Condition: None
 
               Until_Log_File: 
 
                Until_Log_Pos: 0
 
           Master_SSL_Allowed: No
 
           Master_SSL_CA_File: 
 
           Master_SSL_CA_Path: 
 
              Master_SSL_Cert: 
 
            Master_SSL_Cipher: 
 
               Master_SSL_Key: 
 
        Seconds_Behind_Master: NULL
 
Master_SSL_Verify_Server_Cert: No
 
                Last_IO_Errno: 0
 
                Last_IO_Error: 
 
               Last_SQL_Errno: 0
 
               Last_SQL_Error: 
 
  Replicate_Ignore_Server_Ids: 
 
             Master_Server_Id: 0
 
                  Master_UUID: 
 
             Master_Info_File: /data/mysql/mysql_3306/data/master.info
 
                    SQL_Delay: 0
 
          SQL_Remaining_Delay: NULL
 
      Slave_SQL_Running_State: 
 
           Master_Retry_Count: 86400
 
                  Master_Bind: 
 
      Last_IO_Error_Timestamp: 
 
     Last_SQL_Error_Timestamp: 
 
               Master_SSL_Crl: 
 
           Master_SSL_Crlpath: 
 
           Retrieved_Gtid_Set: 
 
            Executed_Gtid_Set: 
 
                Auto_Position: 0
 
         Replicate_Rewrite_DB: 
 
                 Channel_Name: 
 
           Master_TLS_Version: 
 
1 row in set (0.00 sec)
 

 
 
ERROR: 
 
No query specified
 
 
 
4.启动slave
 

 
 
root@localhost [(none)]>start slave;
 
Query OK, 0 rows affected (0.01 sec)
 

 
 
mysql> show slave status\G;
 
*************************** 1. row ***************************
 
               Slave_IO_State: Waiting for master to send event
 
                  Master_Host: 192.168.26.233
 
                  Master_User: repl
 
                  Master_Port: 3306
 
                Connect_Retry: 60
 
              Master_Log_File: mysql-bin.000017
 
          Read_Master_Log_Pos: 154
 
               Relay_Log_File: relay-bin.000003
 
                Relay_Log_Pos: 367
 
        Relay_Master_Log_File: mysql-bin.000017
 
   Slave_IO_Running: Yes  --yes状态正常
 
            Slave_SQL_Running: Yes  --yes状态正常
 
              Replicate_Do_DB: 
 
          Replicate_Ignore_DB: 
 
           Replicate_Do_Table: 
 
       Replicate_Ignore_Table: 
 
      Replicate_Wild_Do_Table: 
 
  Replicate_Wild_Ignore_Table: 
 
                   Last_Errno: 0
 
                   Last_Error: 
 
                 Skip_Counter: 0
 
          Exec_Master_Log_Pos: 154
 
              Relay_Log_Space: 1197
 
              Until_Condition: None
 
               Until_Log_File: 
 
                Until_Log_Pos: 0
 
           Master_SSL_Allowed: No
 
           Master_SSL_CA_File: 
 
           Master_SSL_CA_Path: 
 
              Master_SSL_Cert: 
 
            Master_SSL_Cipher: 
 
               Master_SSL_Key: 
 
        Seconds_Behind_Master: 0
 
Master_SSL_Verify_Server_Cert: No
 
                Last_IO_Errno: 0
 
                Last_IO_Error: 
 
               Last_SQL_Errno: 0
 
               Last_SQL_Error: 
 
  Replicate_Ignore_Server_Ids: 
 
             Master_Server_Id: 3306100
 
                  Master_UUID: 7e354a2c-6f5f-11e6-997d-005056a36f08
 
             Master_Info_File: /data/mysql/mysql_3306/data/master.info
 
                    SQL_Delay: 0
 
          SQL_Remaining_Delay: NULL
 
      Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
 
           Master_Retry_Count: 86400
 
                  Master_Bind: 
 
      Last_IO_Error_Timestamp: 
 
     Last_SQL_Error_Timestamp: 
 
               Master_SSL_Crl: 
 
           Master_SSL_Crlpath: 
 
           Retrieved_Gtid_Set: 
 
            Executed_Gtid_Set: 
 
                Auto_Position: 0
 
         Replicate_Rewrite_DB: 
 
                 Channel_Name: 
 
           Master_TLS_Version: 
 
1 row in set (0.00 sec)
 

 
 
ERROR: 
 
No query specified
 

 
 

 
 
常用命令:
 
start slvae; 开始复制
 
stop  slave; 停止复制
 
start slave io_thread/sql_thread 针对复制线程开启关闭: 
 

 
 

 
 

 
 
测试:
 

 
 
1. 查看master的数据库
 

 
mysql> show databases;
 
+--------------------+
 
| Database           |
 
+--------------------+
 
| information_schema |
 
| mysql              |
 
| performance_schema |
 
| sys                |
 
| zw                 |
 
+--------------------+
 

 
 
2. 查看slave的数据库
 

 
 
mysql> show databases;
 
+--------------------+
 
| Database           |
 
+--------------------+
 
| information_schema |
 
| mysql              |
 
| performance_schema |
 
| sys                |
 
+--------------------+
 
4 rows in set (0.00 sec)
 

 
 
3.master 创建test数据库
 

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

 
 
4.查看slave的数据库,可以看到test数据库同步过来了
 
mysql> show databases;
 
+--------------------+
 
| Database           |
 
+--------------------+
 
| information_schema |
 
| mysql              |
 
| performance_schema |
 
| sys                |
 
| test
 
+--------------------+
 
5 rows in set (0.00 sec)
 

 
 

 
 
5. master test数据库上创建一个表t1
 

 
mysql> use test
 
Database changed
 

 
 
mysql> create table t1(id int(5));
 
Query OK, 0 rows affected (0.16 sec)
 

 
 
mysql> insert into t1 values(1);
 
Query OK, 1 row affected (0.01 sec)
 

 
 
mysql> select * from t1;
 
+------+
 
| id   |
 
+------+
 
|    1 |
 
+------+
 
1 row in set (0.00 sec)
 

 
6. 查看slave的数据库
 

 
 
mysql> use test
 
Reading table information for completion of table and column names
 
You can turn off this feature to get a quicker startup with -A
 

 
 
Database changed
 
mysql> show tables;
 
+----------------+
 
| Tables_in_test |
 
+----------------+
 
| t1 
 
+----------------+
 
1 row in set (0.00 sec)
 

 
 
mysql> select * from t1;
 
+------+
 
| id   |
 
+------+
 
|    1 |
 
+------+
 
1 row in set (0.00 sec)
 

 
 
可以看到 t1表和里面的一条数据也同步过来了
 

 
 

 
 
---------------------------------------------------------
 

 
 
可以看到新的数据都同步过来了,但是搭建主从复制之前的maser上 数据库zw没有复制到从库,这就需要对元数据的迁移
 

 
1. master端 mysqldump把数据导出:
 

 
 
[root@zw-test-db mysql_3306]# mysqldump -S /tmp/mysql3306.sock -uroot -p --single-transaction --master-data=2 -A  > /tmp/full_backup.sql 
 
Enter password:
 

 
 
-A 导出全库
 
--single-transaction 来保证备份的一致性
 
--master=2           可以得到binlog和pos的值
 

 
 
加上master=2 dump出来的有这一句话: -- change master to master_log_file='mysql-bin.000017', master_log_pos=731;
 

 
 

 
 
2.拷贝到slave端
 

 
 
[root@zw-test-db tmp]# scp full_backup.sql root@192.168.26.108:/tmp
 

 
 

 
 
3.slave停止同步
 

 
 
mysql> stop slave;
 
Query OK, 0 rows affected (0.11 sec)
 

 
 

 
 
4.清空slave信息
 

 
mysql> reset slave all;
 
Query OK, 0 rows affected (0.12 sec)
 

 
 

 
 

 
 
5.恢复到slave 
 
[root@llmj-svn-26-81 mysql]# mysql -S /tmp/mysql3306.sock -uroot -p < /tmp/full_backup.sql 
 
Enter password: 
 

 
 
6. 查看master同步之前的表有没有恢复到slave
 

 
 
mysql> use zw;
 
Reading table information for completion of table and column names
 
You can turn off this feature to get a quicker startup with -A
 

 
 
Database changed
 
mysql> show tables;
 
+--------------+
 
| Tables_in_zw |
 
+--------------+
 
| mycode  
 
+--------------+
 
1 row in set (0.00 sec)
 

 
 
mysql> select * from mycode;
 
+----+---------+
 
| id | content |
 
+----+---------+
 
|  1 | aaa     |
 
|  2 | bbb     |
 
|  3 | ccc     |
 
|  4 | ddd     |
 
|  5 | eee     |
 
|  6 | fff     |
 
|  7 | ggg     |
 
|  8 | hhh     |
 
+----+---------+
 
8 rows in set (0.00 sec)
 
可以看到master之前的库和表都同步到slave了
 

 
 

 
 
7. 执行完后,找到/tmp/full_backup.sql,查看log-bin 和pos的位置
 
-- change master to master_log_file='mysql-bin.000017', master_log_pos=731; 
 

 
 

 
 
8. 重新生成change master to 
 

 
 
root@localhost [(none)]>change master to master_host='192.168.26.233', master_port=3306, master_user='repl',master_password='repl',master_log_file='mysql-bin.000017',master_log_pos=731;
 

 
 

 
 
9.查看slave的状态
 

 
 
mysql> show slave status\G
 
*************************** 1. row ***************************
 
               Slave_IO_State: 
 
                  Master_Host: 192.168.26.233
 
                  Master_User: repl
 
                  Master_Port: 3306
 
                Connect_Retry: 60
 
              Master_Log_File: mysql-bin.000017
 
          Read_Master_Log_Pos: 731
 
               Relay_Log_File: relay-bin.000001
 
                Relay_Log_Pos: 4
 
 mysql-bin.000017
 
      Slave_IO_Running: No
 
            Slave_SQL_Running: No
 
              Replicate_Do_DB: 
 
          Replicate_Ignore_DB: 
 
           Replicate_Do_Table: 
 
       Replicate_Ignore_Table: 
 
      Replicate_Wild_Do_Table: 
 
  Replicate_Wild_Ignore_Table: 
 
                   Last_Errno: 0
 
                   Last_Error: 
 
                 Skip_Counter: 0
 
731  
 
              Relay_Log_Space: 154
 
              Until_Condition: None
 
               Until_Log_File: 
 
                Until_Log_Pos: 0
 
           Master_SSL_Allowed: No
 
           Master_SSL_CA_File: 
 
           Master_SSL_CA_Path: 
 
              Master_SSL_Cert: 
 
            Master_SSL_Cipher: 
 
               Master_SSL_Key: 
 
        Seconds_Behind_Master: NULL
 
Master_SSL_Verify_Server_Cert: No
 
                Last_IO_Errno: 0
 
                Last_IO_Error: 
 
               Last_SQL_Errno: 0
 
               Last_SQL_Error: 
 
  Replicate_Ignore_Server_Ids: 
 
             Master_Server_Id: 0
 
                  Master_UUID: 
 
             Master_Info_File: /data/mysql/mysql_3306/data/master.info
 
                    SQL_Delay: 0
 
          SQL_Remaining_Delay: NULL
 
      Slave_SQL_Running_State: 
 
           Master_Retry_Count: 86400
 
                  Master_Bind: 
 
      Last_IO_Error_Timestamp: 
 
     Last_SQL_Error_Timestamp: 
 
               Master_SSL_Crl: 
 
           Master_SSL_Crlpath: 
 
           Retrieved_Gtid_Set: 
 
            Executed_Gtid_Set: 
 
                Auto_Position: 0
 
         Replicate_Rewrite_DB: 
 
                 Channel_Name: 
 
           Master_TLS_Version: 
 
1 row in set (0.00 sec)
 

 
 
10.启动slave
 

 
mysql> start slave;
 
Query OK, 0 rows affected (0.04 sec)
 

 
 
mysql> show slave status \G
 
*************************** 1. row ***************************
 
               Slave_IO_State: Waiting for master to send event
 
                  Master_Host: 192.168.26.233
 
                  Master_User: repl
 
                  Master_Port: 3306
 
                Connect_Retry: 60
 
              Master_Log_File: mysql-bin.000017
 
          Read_Master_Log_Pos: 731
 
               Relay_Log_File: relay-bin.000002
 
                Relay_Log_Pos: 320
 
        Relay_Master_Log_File: mysql-bin.000017
 
             Slave_IO_Running: Yes   --状态正常
 
            Slave_SQL_Running: Yes   --状态正常
 
              Replicate_Do_DB: 
 
          Replicate_Ignore_DB: 
 
           Replicate_Do_Table: 
 
       Replicate_Ignore_Table: 
 
      Replicate_Wild_Do_Table: 
 
  Replicate_Wild_Ignore_Table: 
 
                   Last_Errno: 0
 
                   Last_Error: 
 
                 Skip_Counter: 0
 
          Exec_Master_Log_Pos: 731
 
              Relay_Log_Space: 521
 
              Until_Condition: None
 
               Until_Log_File: 
 
                Until_Log_Pos: 0
 
           Master_SSL_Allowed: No
 
           Master_SSL_CA_File: 
 
           Master_SSL_CA_Path: 
 
              Master_SSL_Cert: 
 
            Master_SSL_Cipher: 
 
               Master_SSL_Key: 
 
        Seconds_Behind_Master: 0
 
Master_SSL_Verify_Server_Cert: No
 
                Last_IO_Errno: 0
 
                Last_IO_Error: 
 
               Last_SQL_Errno: 0
 
               Last_SQL_Error: 
 
  Replicate_Ignore_Server_Ids: 
 
             Master_Server_Id: 3306100
 
                  Master_UUID: 7e354a2c-6f5f-11e6-997d-005056a36f08
 
             Master_Info_File: /data/mysql/mysql_3306/data/master.info
 
                    SQL_Delay: 0
 
          SQL_Remaining_Delay: NULL
 
      Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
 
           Master_Retry_Count: 86400
 
                  Master_Bind: 
 
      Last_IO_Error_Timestamp: 
 
     Last_SQL_Error_Timestamp: 
 
               Master_SSL_Crl: 
 
           Master_SSL_Crlpath: 
 
           Retrieved_Gtid_Set: 
 
            Executed_Gtid_Set: 
 
                Auto_Position: 0
 
         Replicate_Rewrite_DB: 
 
                 Channel_Name: 
 
           Master_TLS_Version: 
 
1 row in set (0.00 sec)
 

 
11. master zw库的 mycode表删除id为单数的表
 

 
 
mysql> delete from mycode where id in (2,4,6,8);
 
Query OK, 4 rows affected (0.00 sec)
 

 
 
mysql> select * from mycode;
 
+----+---------+
 
| id | content |
 
+----+---------+
 
|  1 | aaa     |
 
|  3 | ccc     |
 
|  5 | eee     |
 
|  7 | ggg     |
 
+----+---------+
 
4 rows in set (0.00 sec)
 

 
 

 
 
 
 
12. 查看slave 对应的表,可以看到数据同步过来了
 

 
 
mysql> select * from mycode;
 
+----+---------+
 
| id | content |
 
+----+---------+
 
|  1 | aaa     |
 
|  3 | ccc     |
 
|  5 | eee     |
 
|  7 | ggg     |
 
+----+---------+
 
4 rows in set (0.00 sec)
 

 
 
到此binlog+position搭建结束。

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