1、搭建环境
主(Master) ：192.168.199.103
从(Slave) ：192.168.199.23
[root@localhost ~]# cat /etc/redhat-release
CentOS Linux release 7.5.1804 (Core)
MySQL版本：Server version: 5.7.24 MySQL Community Server (GPL)
MySQL推荐tar包安装：https://blog.csdn.net/qq_39680564/article/details/84943471
学习环境下最好关闭防火墙：https://blog.csdn.net/qq_39680564/article/details/84940221
2、修改配置文件
1、修改Master的my.cnf文件，在末尾增加如下内容
log-bin=mysql-bin
server-id=2
binlog-ignore-db=information_schema
binlog-ignore-db=cluster
binlog-ignore-db=mysql
binlog-do-db=test
2、修改Slave的my.cnf文件，在末尾增加如下内容
log-bin=mysql-bin
server-id=3
binlog-ignore-db=information_schema
binlog-ignore-db=cluster
binlog-ignore-db=mysql
replicate-do-db=test
replicate-ignore-db=mysql
log-slave-updates
slave-skip-errors=all
slave-net-timeout=60
| 参数 | 说明 |
|---|---|
| log-bin | 开启bin-log |
| server-id | 数据库唯一ID，主从不可重复 |
| binlog-ignore-db | Master忽略同步的库 |
| binlog-do-db | Master需要同步的库 |
| replicate-do-db | 指定Slave需要同步的库 |
| log-slave-updates | 链式更新 |
| slave-skip-errors | 跳过出错 |
| slave-net-timeout | 心跳时间 |
3、分别重启两台MySQL
[root@localhost ~]# service mysqld restart
Shutting down MySQL.. SUCCESS!
Starting MySQL. SUCCESS!
3、修改数据库设置
1、Master设置
登录mysql赋予Slave（192.168.199.23）有读取日志的File权限
mysql -uroot -p111111
mysql> grant FILE on *.* to 'root'@'192.168.199.23' identified by '111111';
mysql> grant replication slave on *.* to 'root'@'192.168.199.23' identified by '111111';
mysql> flush privileges;
重启mysql，查看Master状态获取File与Position的值
mysql -uroot -p111111
mysql> show master status;
+------------------+----------+--------------+----------------------------------+-------------------+
| File | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+----------------------------------+-------------------+
| mysql-bin.000002 | 154 | test | information_schema,cluster,mysql | |
+------------------+----------+--------------+----------------------------------+-------------------+
1 row in set (0.00 sec)
2、Slave设置
mysql -uroot -p111111
mysql> stop slave;
mysql> change master to master_host='192.168.199.103',master_user='root',master_password='111111',master_log_file='mysql-bin.000002', master_log_pos=154;
mysql> start slave;
| 参数 | 说明 |
|---|---|
| master_host | Master地址 |
| master_user | Master用户名 |
| master_password | Master密码 |
| master_log_file | Master的File值 |
| master_log_pos | Master的Position |
重启mysql，查看是否与MasterFile与Position的值一直
service mysqld restart
mysql> show slave status;
+----------------------------------+-----------------+-------------+-------------+---------------+------------------+---------------------+----------------------------+---------------+-----------------------+------------------+-------------------+-----------------+---------------------+--------------------+------------------------+-------------------------+-----------------------------+------------+------------+--------------+---------------------+-----------------+-----------------+----------------+---------------+--------------------+--------------------+--------------------+-----------------+-------------------+----------------+-----------------------+-------------------------------+---------------+---------------+----------------+----------------+-----------------------------+------------------+--------------------------------------+-----------------------------------------+-----------+---------------------+--------------------------------------------------------+--------------------+-------------+-------------------------+--------------------------+----------------+--------------------+--------------------+-------------------+---------------+----------------------+--------------+--------------------+
| Slave_IO_State | Master_Host | Master_User | Master_Port | Connect_Retry | Master_Log_File | Read_Master_Log_Pos | Relay_Log_File | Relay_Log_Pos | Relay_Master_Log_File | Slave_IO_Running | Slave_SQL_Running | Replicate_Do_DB | Replicate_Ignore_DB | Replicate_Do_Table | Replicate_Ignore_Table | Replicate_Wild_Do_Table | Replicate_Wild_Ignore_Table | Last_Errno | Last_Error | Skip_Counter | Exec_Master_Log_Pos | Relay_Log_Space | Until_Condition | Until_Log_File | Until_Log_Pos | Master_SSL_Allowed | Master_SSL_CA_File | Master_SSL_CA_Path | Master_SSL_Cert | Master_SSL_Cipher | Master_SSL_Key | Seconds_Behind_Master | Master_SSL_Verify_Server_Cert | Last_IO_Errno | Last_IO_Error | Last_SQL_Errno | Last_SQL_Error | Replicate_Ignore_Server_Ids | Master_Server_Id | Master_UUID | Master_Info_File | SQL_Delay | SQL_Remaining_Delay | Slave_SQL_Running_State | Master_Retry_Count | Master_Bind | Last_IO_Error_Timestamp | Last_SQL_Error_Timestamp | Master_SSL_Crl | Master_SSL_Crlpath | Retrieved_Gtid_Set | Executed_Gtid_Set | Auto_Position | Replicate_Rewrite_DB | Channel_Name | Master_TLS_Version |
+----------------------------------+-----------------+-------------+-------------+---------------+------------------+---------------------+----------------------------+---------------+-----------------------+------------------+-------------------+-----------------+---------------------+--------------------+------------------------+-------------------------+-----------------------------+------------+------------+--------------+---------------------+-----------------+-----------------+----------------+---------------+--------------------+--------------------+--------------------+-----------------+-------------------+----------------+-----------------------+-------------------------------+---------------+---------------+----------------+----------------+-----------------------------+------------------+--------------------------------------+-----------------------------------------+-----------+---------------------+--------------------------------------------------------+--------------------+-------------+-------------------------+--------------------------+----------------+--------------------+--------------------+-------------------+---------------+----------------------+--------------+--------------------+
| Waiting for master to send event | 192.168.199.103 | root | 3306 | 60 | mysql-bin.000002 | 154 | localhost-relay-bin.000004 | 320 | mysql-bin.000002 | Yes | Yes | test | mysql | | | | | 0 | | 0 | 154 | 531 | None | | 0 | No | | | | | | 0 | No | 0 | | 0 | | | 2 | 1f25ba62-fc45-11e8-910e-000c2955ec3b | /usr/local/mysql5.7.24/data/master.info | 0 | NULL | Slave has read all relay log; waiting for more updates | 86400 | | | | | | | | 0 | | | |
+----------------------------------+-----------------+-------------+-------------+---------------+------------------+---------------------+----------------------------+---------------+-----------------------+------------------+-------------------+-----------------+---------------------+--------------------+------------------------+-------------------------+-----------------------------+------------+------------+--------------+---------------------+-----------------+-----------------+----------------+---------------+--------------------+--------------------+--------------------+-----------------+-------------------+----------------+-----------------------+-------------------------------+---------------+---------------+----------------+----------------+-----------------------------+------------------+--------------------------------------+-----------------------------------------+-----------+---------------------+--------------------------------------------------------+--------------------+-------------+-------------------------+--------------------------+----------------+--------------------+--------------------+-------------------+---------------+----------------------+--------------+--------------------+
1 row in set (0.00 sec)
4、验证
1、Master创建test库，并创建一个info表
mysql -uroot -p111111
mysql> create database test;
mysql> use test;
mysql> create table info (name varchar(20),sex varchar(20));
mysql> show tables;
+----------------+
| Tables_in_test |
+----------------+
| info |
+----------------+
1 row in set (0.00 sec)
2、Slave查看是否有此库和info表
mysql -uroot -p111111
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| sys |
| test |
+--------------------+
mysql> use test;
mysql> show tables;
+----------------+
| Tables_in_test |
+----------------+
| info |
+----------------+
1 row in set (0.00 sec)
主从搭建成功！！！