CentOs7中mysql5.7如何实现主从复制配置

这篇文章主要介绍CentOs7中mysql5.7如何实现主从复制配置，文中介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们一定要看完！
MySQL5.7主、从配置具体步骤：
点击(此处)折叠或打开 1.两台MySQL服务器
主：192.168.253.138 端口：1221
从：192.168.253.139 端口：1221

2.修改主从配置参数
2.1 主服务器
##添加入下内容
vi /etc/my.cnf
[mysqld]

log-bin = mysql-bin ##必须启用二进制格式日志
server-id=138 ##server-id必须唯一，一般为IP的尾数

2.2 从服务器

##添加入下内容
vi /etc/my.cnf
[mysqld]

log-bin = mysql-bin ##启用二进制格式日志，可选配置
server-id=139 ##server-id必须唯一，一般为IP的尾数

3.重启主、从服务器使修改生效
主服务器（138）
[root@my01 ~]# service mysql restart
Shutting down MySQL.. SUCCESS!
Startin免费主机域名g MySQL. SUCCESS!

从服务器（139）
[root@my02 ~]# service mysql restart
Shutting down MySQL.. SUCCESS!
Starting MySQL. SUCCESS!

4.在主服务器上创建复制账号并授权slave
[root@my01 ~]# mysql -uroot -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 5
Server version: 5.7.19-log MySQL Community Server (GPL)

Copyright (c) 2000, 2017, 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.

mysql> grant replication slave on *.* to ‘mysync’@’%’ identified by ‘mysql123’;
Query OK, 0 rows affected, 1 warning (0.02 sec)

mysql>

5.查看主服务器状态

##记录File与Position的值，配置从服务器时使用，之后主服务器就不要做任何操作了，避免值的改变使得从服务器配置失败
mysql> show master status;
+——————+———-+————–+——————+——————-+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+——————+———-+————–+——————+——————-+
| mysql-bin.000001 | 1306 | | | |
+——————+———-+————–+——————+——————-+
1 row in set (0.00 sec)

6.配置、启动从服务器

[root@my02 ~]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or g.
Your MySQL connection id is 7
Server version: 5.7.19-log MySQL Community Server (GPL)

Copyright (c) 2000, 2017, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of免费主机域名 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.

mysql>
mysql> CHANGE MASTER TO MASTER_HOST=’192.168.253.138′, MASTER_PORT=1221, MASTER_USER=’mysync’, MASTER_PASSWORD=’mysql123′, MASTER_LOG_FILE=’mysql-bin.000001′, MASTER_LOG_POS=1306;
Query OK, 0 rows affected, 2 warnings (0.01 sec)

mysql> start slave;
Query OK, 0 rows affected (0.01 sec)

7.查看从服务器复制状态
##最主要的是查看Slave_IO_Running: Yes，Slave_SQL_Running: Yes 这两项是不是YES，是则代表主从配置成功，否则失败
mysql> show slave statusG
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.253.138
Master_User: mysync
Master_Port: 1221
Connect_Retry: 60
Master_Log_File: mysql-bin.000001
Read_Master_Log_Pos: 1306
Relay_Log_File: my02-relay-bin.000003
Relay_Log_Pos: 320
Relay_Master_Log_File: mysql-bin.000001
Slave_IO_Running: Yes
Slave_SQL_Running: 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: 1306
Relay_Log_Space: 526
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: 138
Master_UUID: dfb01359-857f-11e7-8ed4-000c2997411c
Master_Info_File: /data/db/mysql/1221/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)

mysql>

8.测试主、从情况
##主服务器
mysql> show databases;
+——————–+
| Database |
+——————–+
| information_schema |
| mysql |
| performance_schema |
| sys |
+——————–+
4 rows in set (0.01 sec)

mysql> create database test;
Query OK, 1 row affected (0.02 sec)

mysql> show databases;
+——————–+
| Database |
+——————–+
| information_schema |
| mysql |
| performance_schema |
| sys |
| test |
+——————–+
5 rows in set (0.00 sec)

mysql> use test;
Database changed
mysql> show tables;
Empty set (0.00 sec)

mysql> create table t(id int,name varchar(10));
Query OK, 0 rows affected (0.04 sec)

mysql> insert into t values (1,”zhang san”);
Query OK, 1 row affected (0.07 sec)

mysql> show tables;
+—————-+
| Tables_in_test |
+—————-+
| t |
+—————-+
1 row in set (0.00 sec)

mysql> select * from
-> t;
+——+———–+
| id | name |
+——+———–+
| 1 | zhang san |
+——+———–+
1 row in set (0.00 sec)

mysql> insert into t values (2,”li si”);
Query OK, 1 row affected (0.01 sec)

mysql>

###从服务器

mysql> show databases;
+——————–+
| Database |
+——————–+
| information_schema |
| mysql |
| performance_schema |
| sys |
| test |
+——————–+
5 rows in set (0.00 sec)

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 |
+—————-+
| t |
+—————-+
1 row in set (0.00 sec)

mysql> select * from t;
+——+———–+
| id | name |
+——+———–+
| 1 | zhang san |
| 2 | li si |
+——+———–+
2 rows in set (0.00 sec)

mysql>

####恭喜成功了！！！

##注意：主服务器权限配置，如下：
mysql> update user set user.Host=’%’ where user.User=’root’;
Query OK, 1 row affected (0.00 sec)
Rows matched: 1 Changed: 1 Warnings: 0

mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)

###此配置保证其它服务器能够连接到主服务器，否则后面的从服务器配置复制时会失败！！！ 以上是“CentOs7中mysql5.7如何实现主从复制配置”这篇文章的所有内容，感谢各位的阅读！希望分享的内容对大家有帮助，更多相关知识，欢迎关注云技术行业资讯频道！

相关推荐: MySQL基准压力测试工具MySQLSlap怎么用

小编给大家分享一下MySQL基准压力测试工具MySQLSlap怎么用，相信大部分人都还不怎么了解，因此分享这篇文章给大家参考一下，希望大家阅读完这篇文章后大有收获，下面让我们一起去了解一下吧！常用的解释：[root@zhanglin ~]# mysqlslap…